Merge branch 'rc/1.58.0' into release

BUGS=[399959254]
---------

Co-authored-by: Syed Idris Shah <idrisshah@google.com>
Co-authored-by: Haneul Kim <haneulk730@gmail.com>
Co-authored-by: Powei Feng <powei@google.com>
Co-authored-by: Doris Wu <doriswu@google.com>
Co-authored-by: Mathias Agopian <mathias@google.com>

.clang-format

@@ -1,68 +0,0 @@
-BasedOnStyle: LLVM
-AccessModifierOffset: -4
-AlignAfterOpenBracket: DontAlign
-AlignConsecutiveAssignments: None
-AlignOperands: Align
-AllowAllArgumentsOnNextLine: false
-AllowAllConstructorInitializersOnNextLine: false
-AllowAllParametersOfDeclarationOnNextLine: true
-AllowShortBlocksOnASingleLine: false
-AllowShortCaseLabelsOnASingleLine: false
-AllowShortFunctionsOnASingleLine: All
-AllowShortIfStatementsOnASingleLine: Always
-AllowShortLambdasOnASingleLine: All
-AllowShortLoopsOnASingleLine: true
-AlwaysBreakAfterReturnType: None
-AlwaysBreakTemplateDeclarations: Yes
-BreakBeforeBraces: Custom
-BracedInitializerIndentWidth: 4
-BraceWrapping:
-  AfterCaseLabel: false
-  AfterClass: false
-  AfterControlStatement: Never
-  AfterEnum: false
-  AfterFunction: false
-  AfterNamespace: false
-  AfterUnion: false
-  BeforeCatch: false
-  BeforeElse: false
-  IndentBraces: false
-  SplitEmptyFunction: false
-  SplitEmptyRecord: true
-BreakBeforeBinaryOperators: None
-BreakBeforeTernaryOperators: true
-BreakConstructorInitializers: BeforeColon
-BreakInheritanceList: BeforeColon
-ColumnLimit: 100
-CompactNamespaces: false
-ContinuationIndentWidth: 8
-Cpp11BracedListStyle: false
-IndentCaseLabels: true
-IndentPPDirectives: None
-IndentWidth: 4
-KeepEmptyLinesAtTheStartOfBlocks: true
-MaxEmptyLinesToKeep: 2
-NamespaceIndentation: None
-ObjCSpaceAfterProperty: false
-ObjCSpaceBeforeProtocolList: true
-PointerAlignment: Left
-ReflowComments: true
-SpaceAfterCStyleCast: true
-SpaceAfterLogicalNot: false
-SpaceAfterTemplateKeyword: false
-SpaceBeforeAssignmentOperators: true
-SpaceBeforeCpp11BracedList: false
-SpaceBeforeCtorInitializerColon: true
-SpaceBeforeInheritanceColon: true
-SpaceBeforeParens: ControlStatements
-SpaceBeforeRangeBasedForLoopColon: false
-SpaceInEmptyParentheses: false
-SpacesBeforeTrailingComments: 0
-SpacesInAngles: false
-SpacesInCStyleCastParentheses: false
-SpacesInContainerLiterals: false
-SpacesInParentheses: false
-SpacesInSquareBrackets: false
-TabWidth: 4
-UseTab: Never
-PackConstructorInitializers: Never

.github/actions/dep-versions/action.yml

@@ -1,7 +0,0 @@
-name: 'Set up dependency versions'
-runs:
-  using: "composite"
-  steps:
-    - name: Set up dependency versions
-      shell: bash
-      run: cat ./build/common/versions >> $GITHUB_ENV

.github/actions/linux-prereq/action.yml

@@ -1,38 +0,0 @@
-name: 'Linux Preqrequisites'
-runs:
-  using: "composite"
-  steps:
-    - uses: ./.github/actions/dep-versions
-    - name: Install Linux Prerequisites
-      shell: bash
-      run: |
-        set -xe
-        # See https://askubuntu.com/questions/272248/processing-triggers-for-man-db/1476024#1476024
-        echo "set man-db/auto-update false" | sudo debconf-communicate
-        sudo dpkg-reconfigure man-db
-
-        # Install ninja
-        source ./build/common/get-ninja.sh
-
-        # Install CMake
-        mkdir -p cmake
-        cd cmake
-
-        sudo wget https://github.com/Kitware/CMake/releases/download/v$GITHUB_CMAKE_VERSION/cmake-$GITHUB_CMAKE_VERSION-Linux-x86_64.sh
-        sudo chmod +x ./cmake-$GITHUB_CMAKE_VERSION-Linux-x86_64.sh
-        sudo ./cmake-$GITHUB_CMAKE_VERSION-Linux-x86_64.sh --skip-license > /dev/null
-        sudo update-alternatives --install /usr/bin/cmake cmake $(pwd)/bin/cmake 1000 --force
-
-        cd ..
-
-        sudo wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
-        sudo apt-get update
-        sudo apt-get install clang-$GITHUB_CLANG_VERSION libc++-$GITHUB_CLANG_VERSION-dev libc++abi-$GITHUB_CLANG_VERSION-dev
-        sudo apt-get install mesa-common-dev libxi-dev libxxf86vm-dev
-
-        # For dawn
-        sudo apt-get install libxrandr-dev libxinerama-dev libxcursor-dev libxi-dev libx11-xcb-dev
-
-        sudo update-alternatives --install /usr/bin/cc cc /usr/bin/clang-${GITHUB_CLANG_VERSION} 100
-        sudo update-alternatives --install /usr/bin/c++ c++ /usr/bin/clang++-${GITHUB_CLANG_VERSION} 100
-        set +xe

.github/actions/mac-prereq/action.yml

@@ -1,23 +0,0 @@
-name: 'Mac Preqrequisites'
-runs:
-  using: "composite"
-  steps:
-    - uses: ./.github/actions/dep-versions
-    - name: Set up Homebrew
-      id: set-up-homebrew
-      uses: Homebrew/actions/setup-homebrew@master
-    - name: Set up Python
-      uses: actions/setup-python@v5
-      with:
-        python-version: '3.x'
-    - name: Cache Brew
-      id: brew-cache
-      uses: actions/cache@v4 # Use a specific version
-      with:
-        path: $HOME/Library/Caches/Homebrew
-        key: ${{ runner.os }}-brew-20250424
-    - name: Install Mac Prerequisites
-      shell: bash
-      run: |
-        # Install ninja
-        source ./build/common/get-ninja.sh

.github/actions/web-prereq/action.yml

@@ -1,16 +0,0 @@
-name: 'Web Preqrequisites'
-runs:
-  using: "composite"
-  steps:
-    - uses: ./.github/actions/dep-versions
-    - name: Cache EMSDK
-      id: emsdk-cache
-      uses: actions/cache@v4 # Use a specific version
-      with:
-        path: emsdk
-        key: ${{ runner.os }}-emsdk-${{ env.GITHUB_EMSDK_VERSION }}
-    - name: Install Web Prerequisites
-      shell: bash
-      run: |
-        bash ./build/common/get-emscripten.sh
-        echo "EMSDK=$PWD/emsdk" >> $GITHUB_ENV

.github/workflows/android-continuous.yml

@@ -12,13 +12,10 @@ jobs:
     name: build-android
     # We intentially use a larger runner here to enable larger disk space
     # (standard linux runner will fail on disk space and faster build time).
-    runs-on: 'ubuntu-24.04-32core'
+    runs-on: ubuntu-22.04-32core
 
     steps:
       - uses: actions/checkout@v4.1.6
-        with:
-          fetch-depth: 0
-      - uses: ./.github/actions/linux-prereq
       - name: Run Android Continuous
         uses: ./.github/actions/android-continuous
         with:

.github/workflows/ios-continuous.yml

@@ -14,9 +14,6 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4.1.6
-        with:
-          fetch-depth: 0
-      - uses: ./.github/actions/mac-prereq
       - name: Run build script
         run: |
           cd build/ios && printf "y" | ./build.sh continuous

.github/workflows/linux-continuous.yml

@@ -10,13 +10,10 @@ on:
 jobs:
   build-linux:
     name: build-linux
-    runs-on: 'ubuntu-24.04-16core'
+    runs-on: ubuntu-22.04-16core
 
     steps:
       - uses: actions/checkout@v4.1.6
-        with:
-          fetch-depth: 0
-      - uses: ./.github/actions/linux-prereq
       - name: Run build script
         run: |
           cd build/linux && printf "y" | ./build.sh continuous

.github/workflows/mac-continuous.yml

@@ -14,9 +14,6 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4.1.6
-        with:
-          fetch-depth: 0
-      - uses: ./.github/actions/mac-prereq
       - name: Run build script
         run: |
           cd build/mac && printf "y" | ./build.sh continuous
@@ -26,4 +23,4 @@ jobs:
           path: out/filament-release-darwin.tgz
       - name: Check public headers
         run: |
-          test/check-headers/test.sh out/release/filament/include
+          build/common/check-headers.sh out/release/filament/include

.github/workflows/presubmit.yml

@@ -9,32 +9,20 @@ on:
     - main
 
 jobs:
-  build-desktop-mac:
-    name: build-mac
-    runs-on: macos-14-xlarge
-    steps:
-      - uses: actions/checkout@v4.1.6
-        with:
-          fetch-depth: 0
-      - uses: ./.github/actions/mac-prereq
-      - name: Run build script
-        run: |
-          cd build/mac && printf "y" | ./build.sh presubmit
-      - name: Test material parser
-        run: |
-          out/cmake-release/filament/test/test_material_parser
+  build-desktop:
+    name: build-desktop
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        os: [macos-14-xlarge, ubuntu-22.04-16core]
 
-  build-desktop-linux:
-    name: build-linux
-    runs-on: ubuntu-22.04-16core
     steps:
       - uses: actions/checkout@v4.1.6
-        with:
-          fetch-depth: 0
-      - uses: ./.github/actions/linux-prereq
       - name: Run build script
         run: |
-          cd build/linux && printf "y" | ./build.sh presubmit
+          WORKFLOW_OS=`echo \`uname\` | sed "s/Darwin/mac/" | tr [:upper:] [:lower:]`
+          cd build/$WORKFLOW_OS && printf "y" | ./build.sh presubmit
       - name: Test material parser
         run: |
           out/cmake-release/filament/test/test_material_parser
@@ -45,8 +33,6 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4.1.6
-        with:
-          fetch-depth: 0
       - name: Run build script
         run: |
           build\windows\build-github.bat presubmit
@@ -54,13 +40,10 @@ jobs:
 
   build-android:
     name: build-android
-    runs-on: 'ubuntu-24.04-16core'
+    runs-on: ubuntu-22.04-16core
 
     steps:
       - uses: actions/checkout@v4.1.6
-        with:
-          fetch-depth: 0
-      - uses: ./.github/actions/linux-prereq
       - uses: actions/setup-java@v3
         with:
           distribution: 'temurin'
@@ -77,9 +60,6 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4.1.6
-        with:
-          fetch-depth: 0
-      - uses: ./.github/actions/mac-prereq
       - name: Run build script
         run: |
           cd build/ios && printf "y" | ./build.sh presubmit
@@ -89,21 +69,17 @@ jobs:
 
   build-web:
     name: build-web
-    runs-on: 'ubuntu-24.04-16core'
+    runs-on: ubuntu-22.04-16core
 
     steps:
       - uses: actions/checkout@v4.1.6
-        with:
-          fetch-depth: 0
-      - uses: ./.github/actions/linux-prereq
-      - uses: ./.github/actions/web-prereq
       - name: Run build script
         run: |
           cd build/web && printf "y" | ./build.sh presubmit
 
   validate-docs:
     name: validate-docs
-    runs-on: 'ubuntu-24.04-4core'
+    runs-on: ubuntu-22.04-4core
     steps:
       - uses: actions/checkout@v4.1.6
         with:
@@ -116,60 +92,15 @@ jobs:
 
   test-renderdiff:
     name: test-renderdiff
-    runs-on: macos-14-xlarge
+    runs-on: ubuntu-22.04-16core
+
     steps:
       - uses: actions/checkout@v4.1.6
-        with:
-          fetch-depth: 0
-      - uses: ./.github/actions/mac-prereq
-      - name: Cache Mesa and deps
-        id: mesa-cache
-        uses: actions/cache@v4
-        with:
-          path: mesa
-          key: ${{ runner.os }}-mesa-deps-2-${{ vars.MESA_VERSION }}
-      - name: Prerequisites
-        id: prereqs
+      - uses: ./.github/actions/ubuntu-apt-add-src
+      - name: Run script
         run: |
-          bash build/common/get-mesa.sh
-          pip install tifffile numpy
-      - name: Run Test
-        run: bash test/renderdiff/test.sh
+          source ./build/linux/ci-common.sh && bash test/renderdiff/test.sh
       - uses: actions/upload-artifact@v4
         with:
           name: presubmit-renderdiff-result
           path: ./out/renderdiff_tests
-
-  validate-wgsl-webgpu:
-    name: validate-wgsl-webgpu
-    runs-on: 'ubuntu-24.04-8core'
-    steps:
-      - uses: actions/checkout@v4.1.6
-        with:
-          fetch-depth: 0
-      - uses: ./.github/actions/linux-prereq
-      - name: Run build script
-        run: ./build.sh -W debug test_filamat filament
-      - name: Run test
-        run: ./out/cmake-debug/libs/filamat/test_filamat --gtest_filter=MaterialCompiler.Wgsl*
-
-  test-code-correctness:
-    name: test-code-correctness
-    runs-on: 'macos-14-xlarge'
-    steps:
-      - uses: actions/checkout@v4.1.6
-        with:
-          fetch-depth: 0
-      - uses: ./.github/actions/mac-prereq
-      - name: Install clang-tidy and deps
-        run: |
-          pip install pyyaml
-          brew install llvm@${GITHUB_LLVM_VERSION}
-          sudo ln -s "$(brew --prefix llvm)@${GITHUB_LLVM_VERSION}/bin/clang-tidy" "/usr/local/bin/clang-tidy"
-      - name: Run build script
-        # We need to build before clang-tidy can run analysis
-        run: |
-          # This will build for all three desktop backends on mac
-          ./build.sh -p desktop debug gltf_viewer
-      - name: Run test
-        run: bash test/code-correctness/test.sh

.github/workflows/release.yml

@@ -9,11 +9,6 @@ name: Release
 env:
   RELEASE_TAG: ${{ github.event.inputs.release_tag }}
 
-# The default GITHUB_TOKEN does not have write permissions, which is needed to upload release
-# assets.
-permissions:
-  contents: write
-
 on:
   workflow_dispatch:
     inputs:
@@ -29,11 +24,15 @@ on:
     types: [created]
 
 jobs:
-  build-linux:
-    name: build-linux
-    runs-on: ubuntu-22.04-32core
+  build-desktop:
+    name: build-desktop
+    runs-on: ${{ matrix.os }}
     if: github.event_name == 'release' || github.event.inputs.platform == 'desktop'
 
+    strategy:
+      matrix:
+        os: [macos-14-xlarge, ubuntu-22.04-32core]
+
     steps:
       - name: Decide Git ref
         id: git_ref
@@ -45,48 +44,15 @@ jobs:
       - uses: actions/checkout@v4.1.6
         with:
           ref: ${{ steps.git_ref.outputs.ref }}
-      - uses: ./.github/actions/linux-prereq
       - name: Run build script
         env:
           TAG: ${{ steps.git_ref.outputs.tag }}
         run: |
-          cd build/linux && printf "y" | ./build.sh release
+          WORKFLOW_OS=`echo \`uname\` | sed "s/Darwin/mac/" | tr [:upper:] [:lower:]`
+          cd build/$WORKFLOW_OS && printf "y" | ./build.sh release
           cd ../..
-          mv out/filament-release-linux.tgz out/filament-${TAG}-linux.tgz
-      - uses: actions/github-script@v6
-        env:
-          TAG: ${{ steps.git_ref.outputs.tag }}
-        with:
-          script: |
-            const upload = require('./build/common/upload-release-assets');
-            const { TAG } = process.env;
-            const globber = await glob.create('out/*.tgz');
-            await upload({ github, context }, await globber.glob(), TAG);
-
-  build-mac:
-    name: build-mac
-    runs-on: macos-14-xlarge
-    if: github.event_name == 'release' || github.event.inputs.platform == 'desktop'
-
-    steps:
-      - name: Decide Git ref
-        id: git_ref
-        run: |
-          REF=${RELEASE_TAG:-${GITHUB_REF}}
-          TAG=${REF##*/}
-          echo "ref=${REF}" >> $GITHUB_OUTPUT
-          echo "tag=${TAG}" >> $GITHUB_OUTPUT
-      - uses: actions/checkout@v4.1.6
-        with:
-          ref: ${{ steps.git_ref.outputs.ref }}
-      - uses: ./.github/actions/mac-prereq
-      - name: Run build script
-        env:
-          TAG: ${{ steps.git_ref.outputs.tag }}
-        run: |
-          cd build/mac && printf "y" | ./build.sh release
-          cd ../..
-          mv out/filament-release-darwin.tgz out/filament-${TAG}-mac.tgz
+          if [ -f out/filament-release-darwin.tgz ]; then mv out/filament-release-darwin.tgz out/filament-${TAG}-mac.tgz; fi;
+          if [ -f out/filament-release-linux.tgz ]; then mv out/filament-release-linux.tgz out/filament-${TAG}-linux.tgz; fi;
       - uses: actions/github-script@v6
         env:
           TAG: ${{ steps.git_ref.outputs.tag }}
@@ -99,7 +65,7 @@ jobs:
 
   build-web:
     name: build-web
-    runs-on: 'ubuntu-24.04-16core'
+    runs-on: ubuntu-22.04-16core
     if: github.event_name == 'release' || github.event.inputs.platform == 'web'
 
     steps:
@@ -113,8 +79,6 @@ jobs:
       - uses: actions/checkout@v4.1.6
         with:
           ref: ${{ steps.git_ref.outputs.ref }}
-      - uses: ./.github/actions/linux-prereq
-      - uses: ./.github/actions/web-prereq
       - name: Run build script
         env:
           TAG: ${{ steps.git_ref.outputs.tag }}
@@ -134,7 +98,7 @@ jobs:
 
   build-android:
     name: build-android
-    runs-on: 'ubuntu-24.04-16core'
+    runs-on: ubuntu-22.04-16core
     if: github.event_name == 'release' || github.event.inputs.platform == 'android'
 
     steps:
@@ -152,7 +116,6 @@ jobs:
         with:
           distribution: 'temurin'
           java-version: '17'
-      - uses: ./.github/actions/linux-prereq
       - name: Run build script
         env:
           TAG: ${{ steps.git_ref.outputs.tag }}
@@ -163,9 +126,6 @@ jobs:
           mv out/filamat-android-release.aar out/filamat-${TAG}-android.aar
           mv out/gltfio-android-release.aar out/gltfio-${TAG}-android.aar
           mv out/filament-utils-android-release.aar out/filament-utils-${TAG}-android.aar
-          cd out/android-release/filament
-          tar -czf ../../filament-${TAG}-android-native.tgz .
-          cd ../../..
       - name: Sign sample-gltf-viewer
         run: |
           echo "${APK_KEYSTORE_BASE64}" > filament.jks.base64
@@ -187,7 +147,7 @@ jobs:
           script: |
             const upload = require('./build/common/upload-release-assets');
             const { TAG } = process.env;
-            const globber = await glob.create(['out/*.aar', 'out/*.apk', 'out/*.tgz'].join('\n'));
+            const globber = await glob.create(['out/*.aar', 'out/*.apk'].join('\n'));
             await upload({ github, context }, await globber.glob(), TAG);
 
   build-ios:
@@ -206,7 +166,6 @@ jobs:
       - uses: actions/checkout@v4.1.6
         with:
           ref: ${{ steps.git_ref.outputs.ref }}
-      - uses: ./.github/actions/mac-prereq
       - name: Run build script
         env:
           TAG: ${{ steps.git_ref.outputs.tag }}

.github/workflows/web-continuous.yml

@@ -10,14 +10,10 @@ on:
 jobs:
   build-web:
     name: build-web
-    runs-on: 'ubuntu-24.04-16core'
+    runs-on: ubuntu-22.04-16core
 
     steps:
       - uses: actions/checkout@v4.1.6
-        with:
-          fetch-depth: 0
-      - uses: ./.github/actions/linux-prereq
-      - uses: ./.github/actions/web-prereq
       - name: Run build script
         run: |
           cd build/web && printf "y" | ./build.sh continuous

BUILDING.md

@@ -363,8 +363,6 @@ python ./emsdk.py activate latest
 source ./emsdk_env.sh
 ```
 
-Alternatively, you can try running the script `build/common/get-emscripten.sh`.
-
 After this you can invoke the [easy build](#easy-build) script as follows:
 
 ```shell

CMakeLists.txt

@@ -139,14 +139,14 @@ else()
     set(LINUX FALSE)
 endif()
 
-if (NOT FILAMENT_OSMESA_PATH STREQUAL "")
-    if (NOT EXISTS ${FILAMENT_OSMESA_PATH}/)
-        message(FATAL_ERROR "Cannot find specified OSMesa build directory: ${FILAMENT_OSMESA_PATH}")
-    endif()
-    set(FILAMENT_SUPPORTS_OSMESA TRUE)
-endif()
-
 if (LINUX)
+    if (NOT FILAMENT_OSMESA_PATH STREQUAL "")
+        if (NOT EXISTS ${FILAMENT_OSMESA_PATH}/)
+            message(FATAL_ERROR "Cannot find specified OSMesa build directory: ${FILAMENT_OSMESA_PATH}")
+        endif()
+        set(FILAMENT_SUPPORTS_OSMESA TRUE)
+    endif()
+
     if (FILAMENT_SUPPORTS_WAYLAND)
         add_definitions(-DFILAMENT_SUPPORTS_WAYLAND)
         set(FILAMENT_SUPPORTS_X11 FALSE)
@@ -184,12 +184,6 @@ if (NOT ANDROID AND NOT WEBGL AND NOT IOS AND NOT FILAMENT_LINUX_IS_MOBILE)
     set(IS_HOST_PLATFORM TRUE)
 endif()
 
-if (APPLE)
-    if (FILAMENT_SUPPORTS_OSMESA)
-        add_definitions(-DFILAMENT_SUPPORTS_OSMESA)
-    endif()
-endif()
-
 if (WIN32)
     # Link statically against c/c++ lib to avoid missing redistriburable such as
     # "VCRUNTIME140.dll not found. Try reinstalling the app.", but give users
@@ -334,9 +328,6 @@ if (MSVC)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CXX_STANDARD} /W0 /Zc:__cplusplus")
 else()
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CXX_STANDARD} -fstrict-aliasing -Wno-unknown-pragmas -Wno-unused-function -Wno-deprecated-declarations")
-    if (APPLE)
-        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-nullability-extension")
-    endif()
 endif()
 
 if (FILAMENT_USE_EXTERNAL_GLES3)
@@ -610,14 +601,6 @@ if (FILAMENT_SUPPORTS_METAL)
     set(MATC_API_FLAGS ${MATC_API_FLAGS} -a metal)
 endif()
 
-# With WebGPU, push constants are not supported. Skinning uses them.
-# WebGPU has a proposal to add push constants at https://github.com/gpuweb/gpuweb/blob/main/proposals/push-constants.md
-# With WebGPU, Tint does not support ClipDistance which is used in Stereo.  Mentioned in comment
-# https://github.com/google/dawn/blob/855d17b08abdf02f9142bf5a8f14d0ea088810a4/src/tint/lang/spirv/reader/ast_parser/function.cc#L4434
-if (FILAMENT_SUPPORTS_WEBGPU)
-    set(MATC_API_FLAGS ${MATC_API_FLAGS} -a webgpu --variant-filter=skinning,stereo)
-endif()
-
 # Disable ESSL 1.0 code generation.
 if (NOT FILAMENT_ENABLE_FEATURE_LEVEL_0)
     set(MATC_API_FLAGS ${MATC_API_FLAGS} -1)
@@ -801,7 +784,6 @@ add_subdirectory(${EXTERNAL}/draco/tnt)
 add_subdirectory(${EXTERNAL}/jsmn/tnt)
 add_subdirectory(${EXTERNAL}/stb/tnt)
 add_subdirectory(${EXTERNAL}/getopt)
-add_subdirectory(${EXTERNAL}/perfetto/tnt)
 
 # Note that this has to be placed after mikktspace in order for combine_static_libs to work.
 add_subdirectory(${LIBRARIES}/geometry)

NEW_RELEASE_NOTES.md

@@ -7,5 +7,4 @@ for next branch cut* header.
 appropriate header in [RELEASE_NOTES.md](./RELEASE_NOTES.md).
 
 ## Release notes for next branch cut
-
-- materials: sampler now export their type in the material binary [⚠️ **New Material Version**]
+- materials: add an optional `transformName` field to sampler material parameters. [⚠️ **New Material Version**]

README.md

@@ -31,7 +31,7 @@ repositories {
 }
 
 dependencies {
-    implementation 'com.google.android.filament:filament-android:1.59.5'
+    implementation 'com.google.android.filament:filament-android:1.58.0'
 }
 ```
 
@@ -51,7 +51,7 @@ Here are all the libraries available in the group `com.google.android.filament`:
 iOS projects can use CocoaPods to install the latest release:
 
 ```shell
-pod 'Filament', '~> 1.59.5'
+pod 'Filament', '~> 1.58.0'
 ```
 
 ## Documentation

RELEASE_NOTES.md

@@ -7,42 +7,6 @@ A new header is inserted each time a *tag* is created.
 Instead, if you are authoring a PR for the main branch, add your release note to
 [NEW_RELEASE_NOTES.md](./NEW_RELEASE_NOTES.md).
 
-## v1.60.0
-
-- materials: remove dependence on per-view descset layout from filamat. [⚠️ **New Material Version**]
-- `ColorGrading::Builder::toneMapper` now takes a `shared_ptr<ToneMapper>`
-
-## v1.59.5
-
-
-## v1.59.4
-
-
-## v1.59.3
-
-
-## v1.59.2
-
-- Fix build/compile errors when upgrading to MacOS 15.4
-
-## v1.59.1
-
-
-## v1.59.0
-
-- materials: five custom variables (varyings) are now available on the condition that the `color` attribute is not requested (b/404930099). [⚠️ **New Material Version**]
-
-## v1.58.2
-
-- engine: Generate 1D instead of 3D LUTs for color grading whenever possible.
-
-## v1.58.1
-
-
-## v1.58.0
-
-- materials: add an optional `transformName` field to sampler material parameters. [⚠️ **New Material Version**]
-
 ## v1.57.3
 
 - android: breaking changes to API KTX1Loader::createIndirectLight and KTX1Loader::createSkybox

android/build.gradle

@@ -71,9 +71,10 @@ buildscript {
             .gradleProperty("com.google.android.filament.include-webgpu")
             .isPresent()
 
-    def fgviewer = providers
-                 .gradleProperty("com.google.android.filament.fgviewer")
-                 .isPresent()
+    // TODO: Uncomment below when fgviewer is ready
+    // def fgviewer = providers
+    //         .gradleProperty("com.google.android.filament.fgviewer")
+    //         .isPresent()
 
     def matdbg = providers
             .gradleProperty("com.google.android.filament.matdbg")
@@ -130,7 +131,8 @@ buildscript {
         "-DFILAMENT_DIST_DIR=${filamentPath}".toString(),
         "-DFILAMENT_SUPPORTS_VULKAN=${excludeVulkan ? 'OFF' : 'ON'}".toString(),
         "-DFILAMENT_SUPPORTS_WEBGPU=${includeWebGPU ? 'ON' : 'OFF'}".toString(),
-        "-DFILAMENT_ENABLE_FGVIEWER=${fgviewer ? 'ON' : 'OFF'}".toString(),
+        // TODO: Uncomment below when fgviewer is ready
+        // "-DFILAMENT_ENABLE_FGVIEWER=${fgviewer ? 'ON' : 'OFF'}".toString(),
         "-DFILAMENT_ENABLE_MATDBG=${matdbg ? 'ON' : 'OFF'}".toString(),
         "-DFILAMENT_DISABLE_MATOPT=${matnopt ? 'ON' : 'OFF'}".toString()
     ]

android/buildSrc/src/main/groovy/FilamentPlugin.groovy

@@ -142,12 +142,6 @@ abstract class MaterialCompiler extends TaskWithBinary {
                 if (!exclude_vulkan) {
                     matcArgs += ['-a', 'vulkan']
                 }
-                def include_webgpu = providers
-                        .gradleProperty("com.google.android.filament.include-webgpu")
-                        .forUseAtConfigurationTime().present
-                if (include_webgpu) {
-                    matcArgs += ['-a', 'webgpu', '--variant-filter=skinning,stereo']
-                }
 
                 def mat_no_opt = providers
                         .gradleProperty("com.google.android.filament.matnopt")

android/filamat-android/CMakeLists.txt

@@ -11,13 +11,6 @@ if (FILAMENT_SUPPORTS_VULKAN)
     message("Library filamat ignores Vulkan settings")
 endif()
 
-if (FILAMENT_SUPPORTS_WEBGPU)
-    # See third_party/dawn/tnt/CMakeLists.txt and libs/filamat/CMakeLists.txt
-    add_library(tint STATIC IMPORTED)
-    set_target_properties(tint PROPERTIES IMPORTED_LOCATION
-            ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libtint_combined.a)
-endif()
-
 add_library(${FILAMAT_FLAVOR} STATIC IMPORTED)
 set_target_properties(${FILAMAT_FLAVOR} PROPERTIES IMPORTED_LOCATION
         ${FILAMENT_DIR}/lib/${ANDROID_ABI}/lib${FILAMAT_FLAVOR}.a)
@@ -26,10 +19,6 @@ add_library(utils STATIC IMPORTED)
 set_target_properties(utils PROPERTIES IMPORTED_LOCATION
         ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libutils.a)
 
-add_library(perfetto STATIC IMPORTED)
-set_target_properties(perfetto PROPERTIES IMPORTED_LOCATION
-        ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libperfetto.a)
-
 add_library(filabridge STATIC IMPORTED)
 set_target_properties(filabridge PROPERTIES IMPORTED_LOCATION
         ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libfilabridge.a)
@@ -44,7 +33,6 @@ set_target_properties(shaders PROPERTIES IMPORTED_LOCATION
 
 set(FILAMAT_INCLUDE_DIRS
         ../../libs/utils/include
-        ../../third_party/perfetto
         )
 
 include_directories(${FILAMENT_DIR}/include)
@@ -60,8 +48,6 @@ target_link_libraries(filamat-jni
         filabridge
         shaders
         utils
-        perfetto
         log
         smol-v
-        $<$<STREQUAL:${FILAMENT_SUPPORTS_WEBGPU},ON>:tint>
 )

android/filament-android/CMakeLists.txt

@@ -2,7 +2,8 @@ cmake_minimum_required(VERSION 3.19)
 project(filament-android)
 
 option(FILAMENT_SUPPORTS_VULKAN "Enables Vulkan on Android" OFF)
-option(FILAMENT_ENABLE_FGVIEWER "Enables Frame Graph Viewer" OFF)
+# TODO: Uncomment below when fgviewer is ready
+# option(FILAMENT_ENABLE_FGVIEWER "Enables Frame Graph Viewer" OFF)
 option(FILAMENT_ENABLE_MATDBG "Enables Material debugger" OFF)
 option(FILAMENT_DISABLE_MATOPT "Disables material optimizations" OFF)
 option(FILAMENT_SUPPORTS_WEBGPU "Enables WebGPU on Android" OFF)
@@ -21,10 +22,6 @@ add_library(utils STATIC IMPORTED)
 set_target_properties(utils PROPERTIES IMPORTED_LOCATION
         ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libutils.a)
 
-add_library(perfetto STATIC IMPORTED)
-set_target_properties(perfetto PROPERTIES IMPORTED_LOCATION
-        ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libperfetto.a)
-
 add_library(ibl-lite STATIC IMPORTED)
 set_target_properties(ibl-lite PROPERTIES IMPORTED_LOCATION
         ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libibl-lite.a)
@@ -33,6 +30,10 @@ add_library(filaflat STATIC IMPORTED)
 set_target_properties(filaflat PROPERTIES IMPORTED_LOCATION
         ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libfilaflat.a)
 
+add_library(filamat STATIC IMPORTED)
+set_target_properties(filamat PROPERTIES IMPORTED_LOCATION
+        ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libfilamat.a)
+
 add_library(geometry STATIC IMPORTED)
 set_target_properties(geometry PROPERTIES IMPORTED_LOCATION
         ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libgeometry.a)
@@ -59,11 +60,12 @@ add_library(smol-v STATIC IMPORTED)
 set_target_properties(smol-v PROPERTIES IMPORTED_LOCATION
         ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libsmol-v.a)
 
-if (FILAMENT_ENABLE_FGVIEWER)
-    add_library(fgviewer STATIC IMPORTED)
-    set_target_properties(fgviewer PROPERTIES IMPORTED_LOCATION
-            ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libfgviewer.a)
-endif()
+# TODO: Uncomment below when fgviewer is ready
+# if (FILAMENT_ENABLE_FGVIEWER)
+#     add_library(fgviewer STATIC IMPORTED)
+#     set_target_properties(fgviewer PROPERTIES IMPORTED_LOCATION
+#             ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libfgviewer.a)
+# endif()
 
 if (FILAMENT_ENABLE_MATDBG)
     add_library(matdbg STATIC IMPORTED)
@@ -127,12 +129,12 @@ target_link_libraries(filament-jni
     PRIVATE android
     PRIVATE jnigraphics
     PRIVATE utils
-    PRIVATE perfetto
 
     # libgeometry is PUBLIC because gltfio uses it.
     PUBLIC geometry
 
-    $<$<STREQUAL:${FILAMENT_ENABLE_FGVIEWER},ON>:fgviewer>
+    # TODO: Uncomment below when fgviewer is ready
+    # $<$<STREQUAL:${FILAMENT_ENABLE_FGVIEWER},ON>:fgviewer>
     $<$<STREQUAL:${FILAMENT_ENABLE_MATDBG},ON>:matdbg>
     $<$<STREQUAL:${FILAMENT_ENABLE_MATDBG},ON>:filamat>
     $<$<STREQUAL:${FILAMENT_SUPPORTS_VULKAN},ON>:bluevk>
@@ -146,7 +148,6 @@ target_include_directories(filament-jni PRIVATE
         ${FILAMENT_DIR}/include
         ../../filament/backend/include
         ../../third_party/robin-map
-        ../../third_party/perfetto
         ../../libs/utils/include)
 
 # Force a relink when the version script is changed:

android/filament-android/src/main/cpp/ColorGrading.cpp

@@ -18,7 +18,6 @@
 
 #include <filament/ColorGrading.h>
 #include <filament/ToneMapper.h>
-#include <memory>
 
 #include <math/vec3.h>
 #include <math/vec4.h>
@@ -68,9 +67,8 @@ extern "C" JNIEXPORT void JNICALL
 Java_com_google_android_filament_ColorGrading_nBuilderToneMapper(JNIEnv*, jclass,
         jlong nativeBuilder, jlong toneMapper_) {
     ColorGrading::Builder* builder = (ColorGrading::Builder*) nativeBuilder;
-    ToneMapper* toneMapper = reinterpret_cast<ToneMapper*>(toneMapper_);
-    std::shared_ptr<ToneMapper> toneMapperCopy(toneMapper->clone());
-    builder->toneMapper(toneMapperCopy);
+    const ToneMapper* toneMapper = (const ToneMapper*) toneMapper_;
+    builder->toneMapper(toneMapper);
 }
 
 #pragma clang diagnostic push

android/filament-android/src/main/cpp/Texture.cpp

@@ -68,21 +68,6 @@ Java_com_google_android_filament_Texture_nIsTextureSwizzleSupported(JNIEnv*, jcl
     return (jboolean) Texture::isTextureSwizzleSupported(*engine);
 }
 
-
-extern "C" JNIEXPORT jint JNICALL
-Java_com_google_android_filament_Texture_nGetMaxTextureSize(JNIEnv *, jclass,
-        jlong nativeEngine, jint sampler) {
-    Engine *engine = (Engine *) nativeEngine;
-    return Texture::getMaxTextureSize(*engine, (Texture::Sampler)sampler);
-}
-
-extern "C" JNIEXPORT jint JNICALL
-Java_com_google_android_filament_Texture_nGetMaxArrayTextureLayers(JNIEnv *, jclass,
-        jlong nativeEngine) {
-    Engine *engine = (Engine *) nativeEngine;
-    return Texture::getMaxArrayTextureLayers(*engine);
-}
-
 extern "C" JNIEXPORT jboolean JNICALL
 Java_com_google_android_filament_Texture_nValidatePixelFormatAndType(JNIEnv*, jclass,
         jint internalFormat, jint pixelDataFormat, jint pixelDataType) {

android/filament-android/src/main/java/com/google/android/filament/ColorGrading.java

@@ -46,8 +46,9 @@ import static com.google.android.filament.Asserts.assertFloat4In;
  *
  * <h1>Performance</h1>
  *
- * Creating a new ColorGrading object may be more expensive than other Filament objects as a LUT may
- * need to be generated. The generation of this LUT, if necessary, may happen on the CPU.
+ * Creating a new ColorGrading object may be more expensive than other Filament objects as a
+ * 3D LUT may need to be generated. The generation of a 3D LUT, if necessary, may happen on
+ * the CPU.
  *
  * <h1>Ordering</h1>
  *
@@ -159,10 +160,6 @@ public class ColorGrading {
          * quality level will use a 32x32x32 10 bit LUT, a high quality will use a 32x32x32 16 bit
          * LUT, and a ultra quality will use a 64x64x64 16 bit LUT.
          *
-         * This setting has no effect if generating a 1D LUT.
-         *
-         * This overrides the values set by format() and dimensions().
-         *
          * The default quality is {@link QualityLevel#MEDIUM}.
          *
          * @param qualityLevel The desired quality of the color grading process
@@ -178,8 +175,6 @@ public class ColorGrading {
          * When color grading is implemented using a 3D LUT, this sets the texture format of
          * of the LUT. This overrides the value set by quality().
          *
-         * This setting has no effect if generating a 1D LUT.
-         *
          * The default is INTEGER
          *
          * @param format The desired format of the 3D LUT.
@@ -195,8 +190,6 @@ public class ColorGrading {
          * When color grading is implemented using a 3D LUT, this sets the dimension of the LUT.
          * This overrides the value set by quality().
          *
-         * This setting has no effect if generating a 1D LUT.
-         *
          * The default is 32
          *
          * @param dim The desired dimension of the LUT. Between 16 and 64.
@@ -214,9 +207,9 @@ public class ColorGrading {
          *
          * The default tone mapping operator is {@link ToneMapper.ACESLegacy}.
          *
-         * The copy of the specified tone mapper is set to this builder. It is safe to delete
-         * the original tone mapper object while the copied one is held by the built ColorGrading
-         * object.
+         * The specified tone mapper must have a lifecycle that exceeds the lifetime of
+         * this builder. Since the build(Engine&) method is synchronous, it is safe to
+         * delete the tone mapper object after that finishes executing.
          *
          * @param toneMapper The tone mapping operator to apply to the HDR color buffer
          *
@@ -623,3 +616,4 @@ public class ColorGrading {
 
     private static native long nBuilderBuild(long nativeBuilder, long nativeEngine);
 }
+

android/filament-android/src/main/java/com/google/android/filament/Texture.java

@@ -691,24 +691,6 @@ public class Texture {
                 pixelDataType.ordinal());
     }
 
-    /**
-     * @param engine {@link Engine}
-     * @param type Texture sampler type
-     * @return The maximum size in texels of a texture of type \p type. At least 2048 for
-     *         2D textures, 256 for 3D textures
-     */
-    public static int getMaxTextureSize(@NonNull Engine engine, Sampler type) {
-        return nGetMaxTextureSize(engine.getNativeObject(), type.ordinal());
-    }
-
-    /**
-     * @param engine {@link Engine}
-     * @return The maximum number of layers supported by texture arrays. At least 256.
-     */
-    public static int getMaxArrayTextureLayers(@NonNull Engine engine) {
-        return nGetMaxArrayTextureLayers(engine.getNativeObject());
-    }
-
     /**
      * Use <code>Builder</code> to construct a <code>Texture</code> object instance.
      */
@@ -1307,8 +1289,6 @@ public class Texture {
     private static native boolean nIsTextureFormatSupported(long nativeEngine, int internalFormat);
     private static native boolean nIsTextureFormatMipmappable(long nativeEngine, int internalFormat);
     private static native boolean nIsTextureSwizzleSupported(long nativeEngine);
-    private static native int nGetMaxTextureSize(long nativeObject, int ordinal);
-    private static native int nGetMaxArrayTextureLayers(long nativeObject);
 
     private static native boolean nValidatePixelFormatAndType(int internalFormat, int pixelDataFormat,
             int pixelDataType);

android/filament-android/src/main/java/com/google/android/filament/ToneMapper.java

@@ -31,6 +31,8 @@ package com.google.android.filament;
  *   <li>DisplayRangeToneMapper</li>
  * </ul>
  * </ul>
+ *
+ * You can create custom tone mapping operators by subclassing ToneMapper.
  */
 public class ToneMapper {
     private final long mNativeObject;

android/filament-android/src/main/java/com/google/android/filament/View.java

@@ -1980,7 +1980,7 @@ public class View {
         }
 
         /**
-         * reconstruction filter width typically between 1 (sharper) and 2 (smoother)
+         * reconstruction filter width typically between 0.2 (sharper, aliased) and 1.5 (smoother)
          */
         public float filterWidth = 1.0f;
         /**

android/gltfio-android/CMakeLists.txt

@@ -35,10 +35,6 @@ add_library(utils STATIC IMPORTED)
 set_target_properties(utils PROPERTIES IMPORTED_LOCATION
         ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libutils.a)
 
-add_library(perfetto STATIC IMPORTED)
-set_target_properties(perfetto PROPERTIES IMPORTED_LOCATION
-        ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libperfetto.a)
-
 add_library(uberzlib STATIC IMPORTED)
 set_target_properties(uberzlib PROPERTIES IMPORTED_LOCATION
         ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libuberzlib.a)
@@ -125,7 +121,6 @@ set(GLTFIO_INCLUDE_DIRS
         ../../third_party/meshoptimizer/src
         ../../third_party/robin-map
         ../../third_party/stb
-        ../../third_party/perfetto
         ../../libs/utils/include
         ../../libs/ktxreader/include
 )
@@ -134,7 +129,7 @@ add_library(gltfio-jni SHARED ${GLTFIO_SRCS})
 target_include_directories(gltfio-jni PRIVATE ${GLTFIO_INCLUDE_DIRS})
 set_target_properties(gltfio-jni PROPERTIES LINK_DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/libgltfio-jni.symbols)
 set_target_properties(gltfio-jni PROPERTIES LINK_DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/libgltfio-jni.map)
-target_link_libraries(gltfio-jni filament-jni utils perfetto uberzlib log stb ktxreader basis_transcoder zstd uberarchive)
+target_link_libraries(gltfio-jni filament-jni utils uberzlib log stb ktxreader basis_transcoder zstd uberarchive)
 target_link_libraries(gltfio-jni dracodec meshoptimizer)
 target_compile_definitions(gltfio-jni PUBLIC GLTFIO_DRACO_SUPPORTED=1)
 target_include_directories(gltfio-jni PRIVATE ${DRACO_DIR}/src)

android/gradle.properties

@@ -1,5 +1,5 @@
 GROUP=com.google.android.filament
-VERSION_NAME=1.59.5
+VERSION_NAME=1.58.0
 
 POM_DESCRIPTION=Real-time physically based rendering engine for Android.
 
@@ -30,5 +30,4 @@ com.google.android.filament.abis=all
 #com.google.android.filament.include-webgpu
 
 #com.google.android.filament.matdbg
-#com.google.android.filament.fgviewer
 #com.google.android.filament.matnopt

build.sh

@@ -151,7 +151,7 @@ function print_fgviewer_help {
 }
 
 # Unless explicitly specified, NDK version will be selected as highest available version within same major release chain
-FILAMENT_NDK_VERSION=${FILAMENT_NDK_VERSION:-$(cat `dirname $0`/build/common/versions | grep GITHUB_NDK_VERSION | cut -f 1 -d ".")}
+FILAMENT_NDK_VERSION=${FILAMENT_NDK_VERSION:-$(cat `dirname $0`/build/android/ndk.version | cut -f 1 -d ".")}
 
 # Requirements
 CMAKE_MAJOR=3
@@ -200,9 +200,8 @@ WEBGPU_ANDROID_GRADLE_OPTION=""
 EGL_ON_LINUX_OPTION="-DFILAMENT_SUPPORTS_EGL_ON_LINUX=OFF"
 
 MATDBG_OPTION="-DFILAMENT_ENABLE_MATDBG=OFF"
-MATDBG_GRADLE_OPTION=""
 FGVIEWER_OPTION="-DFILAMENT_ENABLE_FGVIEWER=OFF"
-FGVIEWER_GRADLE_OPTION=""
+MATDBG_GRADLE_OPTION=""
 
 MATOPT_OPTION=""
 MATOPT_GRADLE_OPTION=""
@@ -534,7 +533,6 @@ function build_android {
             ${VULKAN_ANDROID_GRADLE_OPTION} \
             ${WEBGPU_ANDROID_GRADLE_OPTION} \
             ${MATDBG_GRADLE_OPTION} \
-            ${FGVIEWER_GRADLE_OPTION} \
             ${MATOPT_GRADLE_OPTION} \
             :filament-android:assembleDebug \
             :gltfio-android:assembleDebug \
@@ -543,7 +541,6 @@ function build_android {
         ./gradlew \
             -Pcom.google.android.filament.dist-dir=../out/android-debug/filament \
             -Pcom.google.android.filament.abis=${ABI_GRADLE_OPTION} \
-            ${WEBGPU_ANDROID_GRADLE_OPTION} \
             :filamat-android:assembleDebug
 
         if [[ "${BUILD_ANDROID_SAMPLES}" == "true" ]]; then
@@ -586,7 +583,6 @@ function build_android {
             ${VULKAN_ANDROID_GRADLE_OPTION} \
             ${WEBGPU_ANDROID_GRADLE_OPTION} \
             ${MATDBG_GRADLE_OPTION} \
-            ${FGVIEWER_GRADLE_OPTION} \
             ${MATOPT_GRADLE_OPTION} \
             :filament-android:assembleRelease \
             :gltfio-android:assembleRelease \
@@ -595,7 +591,6 @@ function build_android {
         ./gradlew \
             -Pcom.google.android.filament.dist-dir=../out/android-release/filament \
             -Pcom.google.android.filament.abis=${ABI_GRADLE_OPTION} \
-            ${WEBGPU_ANDROID_GRADLE_OPTION} \
             :filamat-android:assembleRelease
 
         if [[ "${BUILD_ANDROID_SAMPLES}" == "true" ]]; then

build/android/build.sh

@@ -1,6 +1,28 @@
 #!/bin/bash
 
-source `dirname $0`/../common/ci-check.sh
+# Usage: the first argument selects the build type:
+# - release, to build release only
+# - debug, to build debug only
+# - continuous, to build release and debug
+# - presubmit, for presubmit builds
+#
+# The default is release
+
+echo "This script is intended to run in a CI environment and may modify your current environment."
+echo "Please refer to BUILDING.md for more information."
+
+read -r -p "Do you wish to proceed (y/n)? " choice
+case "${choice}" in
+    y|Y)
+	      echo "Build will proceed..."
+	      ;;
+    n|N)
+    	  exit 0
+    	  ;;
+	  *)
+        exit 0
+        ;;
+esac
 
 set -e
 set -x
@@ -8,22 +30,30 @@ set -x
 UNAME=`echo $(uname)`
 LC_UNAME=`echo $UNAME | tr '[:upper:]' '[:lower:]'`
 
+FILAMENT_ANDROID_CI_BUILD=true
+
+# build-common.sh will generate the following variables:
+#     $GENERATE_ARCHIVES
+#     $BUILD_DEBUG
+#     $BUILD_RELEASE
+source `dirname $0`/../common/ci-common.sh
+if [[  "$LC_UNAME" == "linux" ]]; then
+    source `dirname $0`/../linux/ci-common.sh
+elif [[ "$LC_UNAME" == "darwin" ]]; then
+    source `dirname $0`/../mac/ci-common.sh
+fi
 source `dirname $0`/../common/build-common.sh
 
 if [[ "$GITHUB_WORKFLOW" ]]; then
     java_version=$(java -version 2>&1 | head -1 | cut -d'"' -f2 | sed '/^1\./s///' | cut -d'.' -f1)
     if [[ "$java_version" < 17 ]]; then
         echo "Android builds require Java 17, found version ${java_version} instead"
-        exit 1
+        exit 0
     fi
 fi
 
 # Unless explicitly specified, NDK version will be set to match exactly the required one
-FILAMENT_NDK_VERSION=${GITHUB_NDK_VERSION:-27.0.11718014}
-
-(! grep "${FILAMENT_NDK_VERSION}" `dirname $0`/../../android/build.gradle > /dev/null) &&
-    echo "Mismatch of NDK versions: want ${FILAMENT_NDK_VERSION} and not found in android/build.gradle" &&
-    exit 1
+FILAMENT_NDK_VERSION=${FILAMENT_NDK_VERSION:-$(cat `dirname $0`/ndk.version)}
 
 # Install the required NDK version specifically (if not present)
 if [[ ! -d "${ANDROID_HOME}/ndk/$FILAMENT_NDK_VERSION" ]]; then

build/android/ndk.version

@@ -0,0 +1 @@
+27.0.11718014

build/common/build-common.sh

@@ -1,20 +1,5 @@
 #!/bin/bash
 
-# build-common.sh will generate the following variables:
-#     $GENERATE_ARCHIVES
-#     $BUILD_DEBUG
-#     $BUILD_RELEASE
-
-# Typically a build script (build.sh) would source this script. For example,
-#   source `dirname $0`/../common/build-common.sh
-
-# Usage: the first argument selects the build type:
-# - release, to build release only
-# - debug, to build debug only
-# - continuous, to build release and debug
-# - presubmit, for presubmit builds
-#
-# The default is release
 if [[ ! "$TARGET" ]]; then
     if [[ "$1" ]]; then
         TARGET=$1

build/common/check-headers.sh

@@ -0,0 +1,65 @@
+#!/usr/bin/env bash
+
+set -e
+
+function print_help {
+    local SELF_NAME
+    SELF_NAME=$(basename "$0")
+    echo "$SELF_NAME. Check that public headers compile independently."
+    echo ""
+    echo "Usage:"
+    echo "    $SELF_NAME <public include directory>"
+    echo ""
+    echo "Example:"
+    echo "    $SELF_NAME out/release/filament/include"
+    echo ""
+    echo "Dependencies: clang"
+    echo ""
+    echo "Options:"
+    echo "    -h"
+    echo "       Print this help message and exit."
+}
+
+while getopts "h" opt; do
+    case ${opt} in
+        h)
+            print_help
+            exit 0
+            ;;
+        *)
+            print_help
+            exit 1
+            ;;
+    esac
+done
+shift $((OPTIND - 1))
+
+if [[ "$#" -ne 1 ]]; then
+    print_help
+    exit 1
+fi
+
+FILAMENT_HEADERS="$1"
+
+includes=()
+pushd "$FILAMENT_HEADERS" >/dev/null
+for f in $(find . -name '*.h'); do
+    # Ignore platform headers. These may contain platform-specific includes.
+    if [[ "$f" == *backend/platforms/* ]]; then
+        continue
+    fi
+    include_path="${f#./}"    # strip leading ./
+    includes+=("${include_path}")
+done
+popd >/dev/null
+
+rm -rf out/check-headers
+mkdir -p out/check-headers
+
+echo "Checking that public headers compile independently..."
+for include in "${includes[@]}"; do
+    echo "Checking ${include}"
+    echo "#include <${include}>" >> out/check-headers/temp.cpp
+    clang -std=c++17 -I "${FILAMENT_HEADERS}" out/check-headers/temp.cpp -c -o /dev/null
+done
+echo "Done!"

build/common/ci-check.sh

@@ -1,19 +0,0 @@
-echo "This script is intended to run in a CI environment and may modify your current environment."
-echo "Please refer to BUILDING.md for more information."
-
-read -r -p "Do you wish to proceed (y/n)? " choice
-case "${choice}" in
-    y|Y)
-	      echo "Build will proceed..."
-	      ;;
-    n|N)
-    	  exit 0
-    	  ;;
-	  *)
-        exit 0
-        ;;
-esac
-
-if [[ "$GITHUB_WORKFLOW" ]]; then
-    echo "Running workflow $GITHUB_WORKFLOW (event: $GITHUB_EVENT_NAME, action: $GITHUB_ACTION)"
-fi

build/common/ci-common.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+if [[ "$GITHUB_WORKFLOW" ]]; then
+    echo "Running workflow $GITHUB_WORKFLOW (event: $GITHUB_EVENT_NAME, action: $GITHUB_ACTION)"
+    CONTINUOUS_INTEGRATION=true
+fi

build/common/get-emscripten.sh

@@ -1,22 +0,0 @@
-#!/bin/bash
-
-if [ -d "./emsdk" ]; then
-    echo "emsdk folder found. Assume emsdk has been installed."
-    cd emsdk
-    ./emsdk activate latest
-    source ./emsdk_env.sh
-    export EMSDK="$PWD"
-    cd ..
-    exit 0
-fi
-
-# Install emscripten.
-EMSDK_VERSION=${GITHUB_EMSDK_VERSION-3.1.60}
-curl -L https://github.com/emscripten-core/emsdk/archive/refs/tags/${EMSDK_VERSION}.zip > emsdk.zip
-unzip emsdk.zip ; mv emsdk-* emsdk ; cd emsdk
-./emsdk install latest
-./emsdk activate latest
-source ./emsdk_env.sh
-
-export EMSDK="$PWD"
-cd ..

build/common/get-mesa.sh

@@ -1,150 +0,0 @@
-# Copyright (C) 2024 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-#!/usr/bin/bash
-
-set -e
-if [[ "$GITHUB_WORKFLOW" ]]; then
-    set -x
-fi
-
-OS_NAME=$(uname -s)
-LLVM_VERSION=${GITHUB_LLVM_VERSION-16}
-MESA_VERSION=${GITHUB_MESA_VERSION-24.2.1}
-ORIG_DIR=$(pwd)
-MESA_DIR=${MESA_DIR-${ORIG_DIR}/mesa}
-
-if [[ "$OS_NAME" == "Linux" ]]; then
-    sudo apt install python3-venv
-fi
-
-# Install python deps
-python3 -m venv ${ORIG_DIR}/venv
-source ${ORIG_DIR}/venv/bin/activate
-
-NEEDED_PYTHON_DEPS=("mako" "setuptools" "pyyaml")
-for cmd in "${NEEDED_PYTHON_DEPS[@]}"; do
-    if ! python3 -m pip show -q "${cmd}" >/dev/null 2>&1; then
-        python3 -m pip install ${cmd}
-    fi
-done
-deactivate
-
-# Install system deps
-if [[ "$OS_NAME" == "Linux" ]]; then
-    if [[ "$GITHUB_WORKFLOW" ]]; then
-        # We only want to do this if it is a CI machine.
-        sudo apt-get -y remove llvm-*
-
-        # We do a manual install of dependencies instead of `apt-get -y build-dep mesa`
-        #   because this allows us to compile an older mesa, and also because build-deps
-        #   is constantly being updated and sometimes not compatible with the current
-        #   linux platform.
-        # Note that we assume this platform is compatible with ubuntu-22.04 x86_64
-        sudo apt-get -y install \
-             autoconf automake autopoint autotools-dev bindgen bison build-essential bzip2 cpp cpp-11 debhelper debugedit dh-autoreconf dh-strip-nondeterminism diffstat directx-headers-dev dpkg-dev dwz flex g++ g++-11 gcc gcc-11 gcc-11-base:amd64 gettext glslang-tools icu-devtools intltool-debian lib32gcc-s1 lib32stdc++6 libarchive-zip-perl libasan6:amd64 libatomic1:amd64 libc-dev-bin libc6-dbg:amd64 libc6-dev:amd64 libc6-i386 libcc1-0:amd64 libclang-${GITHUB_CLANG_VERSION}-dev libclang-common-${GITHUB_CLANG_VERSION}-dev libclang-cpp${GITHUB_CLANG_VERSION} libclang-cpp${GITHUB_CLANG_VERSION}-dev libclang1-14 libclang1-${GITHUB_CLANG_VERSION} libclc-${GITHUB_CLANG_VERSION} libclc-${GITHUB_CLANG_VERSION}-dev libcrypt-dev:amd64 libdebhelper-perl libdpkg-perl libdrm-amdgpu1:amd64 libdrm-dev:amd64 libdrm-intel1:amd64 libdrm-nouveau2:amd64 libdrm-radeon1:amd64 libelf-dev:amd64 libexpat1-dev:amd64 libffi-dev:amd64 libfile-stripnondeterminism-perl libgc1:amd64 libgcc-11-dev:amd64 libgl1:amd64 libgl1-mesa-dri:amd64 libglapi-mesa:amd64 libglvnd-core-dev:amd64 libglvnd0:amd64 libglx-mesa0:amd64 libglx0:amd64 libgomp1:amd64 libicu-dev:amd64 libisl23:amd64 libitm1:amd64 libllvm14:amd64 libllvm${GITHUB_CLANG_VERSION}:amd64 libllvmspirvlib-${GITHUB_CLANG_VERSION}-dev:amd64 libllvmspirvlib${GITHUB_CLANG_VERSION}:amd64 liblsan0:amd64 libmpc3:amd64 libncurses-dev:amd64 libnsl-dev:amd64 libobjc-11-dev:amd64 libobjc4:amd64 libpciaccess-dev:amd64 libpciaccess0f:amd64 libpfm4:amd64 libpthread-stubs0-dev:amd64 libquadmath0:amd64 libsensors-config libsensors-dev:amd64 libsensors5:amd64 libset-scalar-perl libstd-rust-1.75:amd64 libstd-rust-dev:amd64 libstdc++-11-dev:amd64 libsub-override-perl libtinfo-dev:amd64 libtirpc-dev:amd64 libtool libtsan0:amd64 libubsan1:amd64 libva-dev:amd64 libva-drm2:amd64 libva-glx2:amd64 libva-wayland2:amd64 libva-x11-2:amd64 libva2:amd64 libvdpau-dev:amd64 libvdpau1:amd64 libvulkan-dev:amd64 libvulkan1:amd64 libwayland-bin libwayland-client0:amd64 libwayland-cursor0:amd64 libwayland-dev:amd64 libwayland-egl-backend-dev:amd64 libwayland-egl1:amd64 libwayland-server0:amd64 libx11-dev:amd64 libx11-xcb-dev:amd64 libx11-xcb1:amd64 libxau-dev:amd64 libxcb-dri2-0:amd64 libxcb-dri2-0-dev:amd64 libxcb-dri3-0:amd64 libxcb-dri3-dev:amd64 libxcb-glx0:amd64 libxcb-glx0-dev:amd64 libxcb-present-dev:amd64 libxcb-present0:amd64 libxcb-randr0:amd64 libxcb-randr0-dev:amd64 libxcb-render0:amd64 libxcb-render0-dev:amd64 libxcb-shape0:amd64 libxcb-shape0-dev:amd64 libxcb-shm0:amd64 libxcb-shm0-dev:amd64 libxcb-sync-dev:amd64 libxcb-sync1:amd64 libxcb-xfixes0:amd64 libxcb-xfixes0-dev:amd64 libxcb1-dev:amd64 libxdmcp-dev:amd64 libxext-dev:amd64 libxfixes-dev:amd64 libxfixes3:amd64 libxml2-dev:amd64 libxrandr-dev:amd64 libxrandr2:amd64 libxrender-dev:amd64 libxrender1:amd64 libxshmfence-dev:amd64 libxshmfence1:amd64 libxxf86vm-dev:amd64 libxxf86vm1:amd64 libz3-4:amd64 libz3-dev:amd64 libzstd-dev:amd64 linux-libc-dev:amd64 llvm-${LLVM_VERSION} llvm-${LLVM_VERSION}-dev llvm-${LLVM_VERSION}-linker-tools llvm-${LLVM_VERSION}-runtime llvm-${LLVM_VERSION}-tools llvm-spirv-${LLVM_VERSION} lto-disabled-list m4 make meson ninja-build pkg-config po-debconf python3-mako python3-ply python3-pygments quilt rpcsvc-proto rustc spirv-tools valgrind wayland-protocols x11proto-dev xorg-sgml-doctools xtrans-dev zlib1g-dev:amd64 \
-             clang-$GITHUB_CLANG_VERSION libc++-$GITHUB_CLANG_VERSION-dev libc++abi-$GITHUB_CLANG_VERSION-dev
-
-        sudo update-alternatives --install /usr/bin/cc cc /usr/bin/clang-${GITHUB_CLANG_VERSION} 100
-        sudo update-alternatives --install /usr/bin/c++ c++ /usr/bin/clang++-${GITHUB_CLANG_VERSION} 100
-    else
-        set +e
-        sudo apt-get -y build-dep mesa
-        sudo apt -y remove llvm-18 llvm-18-* llvm-19 llvm-19-*
-        set -e
-        CURRENT_CLANG_VERSION=$(clang --version | head -n 1 | awk '{ print $4 }' | awk 'BEGIN { FS="\\." } { print $1 }')
-        CLANG_VERSION=${CURRENT_CLANG_VERSION:-${LLVM_VERSION}}
-        sudo apt-get -y install clang-${CLANG_VERSION} \
-             libc++-${CLANG_VERSION}-dev \
-             libc++abi-${CLANG_VERSION}-dev \
-             llvm-${LLVM_VERSION} \
-             llvm-${LLVM_VERSION}-{dev,tools,runtime}
-        ! command -v clang > /dev/null 2>&1 && \
-            sudo ln -s /usr/bin/clang-${CLANG_VERSION} /usr/bin/clang && \
-            sudo ln -s /usr/bin/clang++-${CLANG_VERSION} /usr/bin/clang++
-    fi # [[ "$GITHUB_WORKFLOW" ]]
-elif [[ "$OS_NAME" == "Darwin" ]]; then
-    if [[ ! "$GITHUB_WORKFLOW" ]]; then
-        if [ ! command -v brew > /dev/null 2>&1 ]; then
-            echo "Error: need to install homebrew to continue"
-            exit 1
-        fi
-    fi
-    HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK=true brew install autoconf automake libx11 libxext libxrandr llvm@${LLVM_VERSION} ninja meson pkg-config libxshmfence
-fi # [[ "$OS_NAME" == x ]]
-
-LOCAL_LDFLAGS=${LDFLAGS}
-LOCAL_CPPFLAGS=${CPPFLAGS}
-LOCAL_PATH=${PATH}
-LOCAL_CXX=$(which clang++)
-LOCAL_CC=$(which clang)
-
-CHECKOUT_MESA=false
-if [[ -d "${MESA_DIR}" ]]; then
-    cd ${MESA_DIR}
-    if ! git fsck --connectivity-only > /dev/null 2>&1; then
-        echo "git fsck failed for mesa; try redownloading"
-        CHECKOUT_MESA=true;
-    fi
-    cd ..;
-else
-    CHECKOUT_MESA=true
-fi
-
-if [[ "$CHECKOUT_MESA" = "true" ]]; then
-    rm -rf ${MESA_DIR}
-
-    git clone https://gitlab.freedesktop.org/mesa/mesa.git
-    if [[ "${MESA_DIR}" != "${ORIG_DIR}/mesa" ]]; then
-        mv mesa ${MESA_DIR}
-    fi
-fi
-
-pushd .
-cd ${MESA_DIR}
-
-# Need >= 24 to have llvmpipe for swrast.  llvmpipe is needed for GL >= 4.1.
-git checkout mesa-${MESA_VERSION}
-
-mkdir -p out
-
-source ${ORIG_DIR}/venv/bin/activate
-
-if  [[ "$OS_NAME" == "Darwin" ]]; then
-    LOCAL_LDFLAGS="-L/opt/homebrew/opt/llvm@${LLVM_VERSION}/lib"
-    LOCAL_CPPFLAGS="-I/opt/homebrew/opt/llvm@${LLVM_VERSION}/include -I/opt/homebrew/include"
-    LOCAL_PATH=${PATH}:/opt/homebrew/opt/llvm@${LLVM_VERSION}/bin
-
-    # This is necessary to be able to build vk (lavapipe) on macOS.  Doesn't seem like a real dependency.
-    sed -I '' "s/error('Vulkan drivers require dri3 for X11 support')//g" meson.build
-fi
-
-# -Dosmesa=true    => builds OSMesa, which is an offscreen GL context
-# -Dgallium-drivers=swrast  => builds GL software rasterizer
-# -Dvulkan-drivers=swrast   => builds VK software rasterizer
-# -Dgallium-drivers=llvmpipe is needed for GL >= 4.1 pipe-screen (see src/gallium/auxiliary/target-helpers/inline_sw_helper.h)
-CXX=${LOCAL_CXX} CC=${LOCAL_CC} PATH=${LOCAL_PATH} LDFLAGS=${LOCAL_LDFLAGS} CPPFLAGS=${LOCAL_CPPFLAGS} \
-   meson setup --wipe builddir/ -Dprefix="${MESA_DIR}/out" -Dglx=xlib -Dosmesa=true -Dgallium-drivers=llvmpipe,swrast -Dvulkan-drivers=swrast
-CXX=${LOCAL_CXX} CC=${LOCAL_CC} PATH=${LOCAL_PATH} LDFLAGS=${LOCAL_LDFLAGS} CPPFLAGS=${LOCAL_CPPFLAGS} \
-   meson install -C builddir/
-
-# Disable python venv
-deactivate
-
-popd
-
-if [[ "$GITHUB_WORKFLOW" ]]; then
-    set +x
-fi
-set +e

build/common/get-ninja.sh

@@ -1,18 +0,0 @@
-#!/bin/bash
-
-if [[ "$GITHUB_WORKFLOW" ]]; then
-    OS_NAME=$(uname -s)
-    NINJA_DL_DIR=/tmp/ninja-dl
-    NINJA_PLATFORM=
-    if [[ "$OS_NAME" == "Linux" ]]; then
-        NINJA_PLATFORM=linux
-    elif [[ "$OS_NAME" == "Darwin" ]]; then
-        NINJA_PLATFORM=mac
-    fi
-    curl -L -o /tmp/ninja-dl.zip https://github.com/ninja-build/ninja/releases/download/v${GITHUB_NINJA_VERSION}/ninja-${NINJA_PLATFORM}.zip
-    mkdir -p $NINJA_DL_DIR
-    unzip -q /tmp/ninja-dl.zip -d $NINJA_DL_DIR
-    chmod +x ${NINJA_DL_DIR}/ninja
-    # Install ninja globally for AGP
-    sudo cp ${NINJA_DL_DIR}/ninja /usr/local/bin/
-fi

build/common/versions

@@ -1,7 +0,0 @@
-GITHUB_CLANG_VERSION=14
-GITHUB_CMAKE_VERSION=3.19.5
-GITHUB_NINJA_VERSION=1.10.2
-GITHUB_MESA_VERSION=24.2.1
-GITHUB_LLVM_VERSION=16
-GITHUB_NDK_VERSION=27.0.11718014
-GITHUB_EMSDK_VERSION=3.1.60

build/ios/build.sh

@@ -1,11 +1,36 @@
 #!/bin/bash
 
-source `dirname $0`/../common/ci-check.sh
+# Usage: the first argument selects the build type:
+# - release, to build release only
+# - debug, to build debug only
+# - continuous, to build release and debug
+# - presubmit, for presubmit builds
+#
+# The default is release
+
+echo "This script is intended to run in a CI environment and may modify your current environment."
+echo "Please refer to BUILDING.md for more information."
+
+read -r -p "Do you wish to proceed (y/n)? " choice
+case "${choice}" in
+    y|Y)
+	      echo "Build will proceed..."
+	      ;;
+    n|N)
+    	  exit 0
+    	  ;;
+	  *)
+        exit 0
+        ;;
+esac
 
 set -e
 set -x
 
+source `dirname $0`/../common/ci-common.sh
+source `dirname $0`/ci-common.sh
 source `dirname $0`/../common/build-common.sh
+
 pushd `dirname $0`/../.. > /dev/null
 
 # If we're generating an archive for release or continuous builds, then we'll also build for the
@@ -16,3 +41,4 @@ if [[ "${GENERATE_ARCHIVES}" ]]; then
 fi
 
 ./build.sh -i -p ios -c $BUILD_SIMULATOR $GENERATE_ARCHIVES $BUILD_DEBUG $BUILD_RELEASE
+

build/ios/ci-common.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+curl -OL https://github.com/ninja-build/ninja/releases/download/v1.10.2/ninja-mac.zip
+unzip -q ninja-mac.zip
+chmod +x ninja
+export PATH="$PWD:$PATH"

build/linux/build.sh

@@ -1,11 +1,39 @@
 #!/bin/bash
 
-source `dirname $0`/../common/ci-check.sh
+# Usage: the first argument selects the build type:
+# - release, to build release only
+# - debug, to build debug only
+# - continuous, to build release and debug
+# - presubmit, for presubmit builds
+#
+# The default is release
+
+echo "This script is intended to run in a CI environment and may modify your current environment."
+echo "Please refer to BUILDING.md for more information."
+
+read -r -p "Do you wish to proceed (y/n)? " choice
+case "${choice}" in
+    y|Y)
+	      echo "Build will proceed..."
+	      ;;
+    n|N)
+    	  exit 0
+    	  ;;
+	  *)
+        exit 0
+        ;;
+esac
 
 set -e
 set -x
 
+# build-common.sh will generate the following variables:
+#     $GENERATE_ARCHIVES
+#     $BUILD_DEBUG
+#     $BUILD_RELEASE
+source `dirname $0`/../common/ci-common.sh
+source `dirname $0`/ci-common.sh
 source `dirname $0`/../common/build-common.sh
-pushd `dirname $0`/../.. > /dev/null
 
+pushd `dirname $0`/../.. > /dev/null
 ./build.sh -c $RUN_TESTS $GENERATE_ARCHIVES $BUILD_DEBUG $BUILD_RELEASE

build/linux/ci-common.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+
+# version of clang we want to use
+export GITHUB_CLANG_VERSION=14
+# version of CMake to use instead of the default one
+export GITHUB_CMAKE_VERSION=3.19.5
+# version of ninja to use
+export GITHUB_NINJA_VERSION=1.10.2
+
+# Steps for GitHub Workflows
+if [[ "$GITHUB_WORKFLOW" ]]; then
+    # Install ninja
+    wget -q https://github.com/ninja-build/ninja/releases/download/v$GITHUB_NINJA_VERSION/ninja-linux.zip
+    unzip -q ninja-linux.zip
+    export PATH="$PWD:$PATH"
+
+    # Install CMake
+    mkdir -p cmake
+    cd cmake
+
+    sudo wget https://github.com/Kitware/CMake/releases/download/v$GITHUB_CMAKE_VERSION/cmake-$GITHUB_CMAKE_VERSION-Linux-x86_64.sh
+    sudo chmod +x ./cmake-$GITHUB_CMAKE_VERSION-Linux-x86_64.sh
+    sudo ./cmake-$GITHUB_CMAKE_VERSION-Linux-x86_64.sh --skip-license > /dev/null
+    sudo update-alternatives --install /usr/bin/cmake cmake $(pwd)/bin/cmake 1000 --force
+
+    cd ..
+
+    sudo wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
+    sudo apt-get update
+    sudo apt-get install clang-$GITHUB_CLANG_VERSION libc++-$GITHUB_CLANG_VERSION-dev libc++abi-$GITHUB_CLANG_VERSION-dev
+    sudo apt-get install mesa-common-dev libxi-dev libxxf86vm-dev
+
+    sudo update-alternatives --install /usr/bin/cc cc /usr/bin/clang-${GITHUB_CLANG_VERSION} 100
+    sudo update-alternatives --install /usr/bin/c++ c++ /usr/bin/clang++-${GITHUB_CLANG_VERSION} 100
+fi

build/mac/build.sh

@@ -1,11 +1,35 @@
 #!/bin/bash
 
-source `dirname $0`/../common/ci-check.sh
+# Usage: the first argument selects the build type:
+# - release, to build release only
+# - debug, to build debug only
+# - continuous, to build release and debug
+# - presubmit, for presubmit builds
+#
+# The default is release
+
+echo "This script is intended to run in a CI environment and may modify your current environment."
+echo "Please refer to BUILDING.md for more information."
+
+read -r -p "Do you wish to proceed (y/n)? " choice
+case "${choice}" in
+    y|Y)
+	      echo "Build will proceed..."
+	      ;;
+    n|N)
+    	  exit 0
+    	  ;;
+	  *)
+        exit 0
+        ;;
+esac
 
 set -e
 set -x
 
+source `dirname $0`/../common/ci-common.sh
+source `dirname $0`/ci-common.sh
 source `dirname $0`/../common/build-common.sh
-pushd `dirname $0`/../.. > /dev/null
 
+pushd `dirname $0`/../.. > /dev/null
 ./build.sh -c $RUN_TESTS $GENERATE_ARCHIVES $BUILD_DEBUG $BUILD_RELEASE

build/mac/ci-common.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+curl -OL https://github.com/ninja-build/ninja/releases/download/v1.10.2/ninja-mac.zip
+unzip -q ninja-mac.zip
+chmod +x ninja
+# Install ninja globally for AGP
+cp ninja /usr/local/bin
+export PATH="$PWD:$PATH"

build/toolchain-aarch64-linux-android.cmake

@@ -31,16 +31,10 @@ set(DIST_ARCH arm64-v8a)
 string(TOLOWER ${CMAKE_HOST_SYSTEM_NAME} HOST_NAME_L)
 file(TO_CMAKE_PATH $ENV{ANDROID_HOME} ANDROID_HOME_UNIX)
 
-message(STATUS "Try using NDK \'${FILAMENT_NDK_VERSION}\'")
 if (NOT FILAMENT_NDK_VERSION)
-    file(READ "${CMAKE_CURRENT_LIST_DIR}/common/versions" VERSIONS_STR)
-    string(REGEX MATCH "GITHUB_NDK_VERSION=(\\d+)" _UNUSED ${VERSIONS_STR})
-    if(CMAKE_MATCH_1)
-        set(FILAMENT_NDK_VERSION "${CMAKE_MATCH_1}")
-    endif()
+    file(READ "${CMAKE_CURRENT_LIST_DIR}/android/ndk.version" FILAMENT_NDK_VERSION)
+    string(REGEX MATCH "^\\d+" FILAMENT_NDK_VERSION ${FILAMENT_NDK_VERSION})
 endif()
-message(STATUS "Using NDK \'${FILAMENT_NDK_VERSION}\'")
-
 file(GLOB NDK_VERSIONS LIST_DIRECTORIES true ${ANDROID_HOME_UNIX}/ndk/${FILAMENT_NDK_VERSION}*)
 list(SORT NDK_VERSIONS)
 list(GET NDK_VERSIONS -1 NDK_VERSION)

build/toolchain-arm7-linux-android.cmake

@@ -32,16 +32,10 @@ set(DIST_ARCH armeabi-v7a)
 string(TOLOWER ${CMAKE_HOST_SYSTEM_NAME} HOST_NAME_L)
 file(TO_CMAKE_PATH $ENV{ANDROID_HOME} ANDROID_HOME_UNIX)
 
-message(STATUS "Try using NDK \'${FILAMENT_NDK_VERSION}\'")
 if (NOT FILAMENT_NDK_VERSION)
-    file(READ "${CMAKE_CURRENT_LIST_DIR}/common/versions" VERSIONS_STR)
-    string(REGEX MATCH "GITHUB_NDK_VERSION=(\\d+)" _UNUSED ${VERSIONS_STR})
-    if(CMAKE_MATCH_1)
-        set(FILAMENT_NDK_VERSION "${CMAKE_MATCH_1}")
-    endif()
+    file(READ "${CMAKE_CURRENT_LIST_DIR}/android/ndk.version" FILAMENT_NDK_VERSION)
+    string(REGEX MATCH "^\\d+" FILAMENT_NDK_VERSION ${FILAMENT_NDK_VERSION})
 endif()
-message(STATUS "Using NDK \'${FILAMENT_NDK_VERSION}\'")
-
 file(GLOB NDK_VERSIONS LIST_DIRECTORIES true ${ANDROID_HOME_UNIX}/ndk/${FILAMENT_NDK_VERSION}*)
 list(SORT NDK_VERSIONS)
 list(GET NDK_VERSIONS -1 NDK_VERSION)

build/toolchain-x86-linux-android.cmake

@@ -31,16 +31,10 @@ set(DIST_ARCH x86)
 string(TOLOWER ${CMAKE_HOST_SYSTEM_NAME} HOST_NAME_L)
 file(TO_CMAKE_PATH $ENV{ANDROID_HOME} ANDROID_HOME_UNIX)
 
-message(STATUS "Try using NDK \'${FILAMENT_NDK_VERSION}\'")
 if (NOT FILAMENT_NDK_VERSION)
-    file(READ "${CMAKE_CURRENT_LIST_DIR}/common/versions" VERSIONS_STR)
-    string(REGEX MATCH "GITHUB_NDK_VERSION=(\\d+)" _UNUSED ${VERSIONS_STR})
-    if(CMAKE_MATCH_1)
-        set(FILAMENT_NDK_VERSION "${CMAKE_MATCH_1}")
-    endif()
+    file(READ "${CMAKE_CURRENT_LIST_DIR}/android/ndk.version" FILAMENT_NDK_VERSION)
+    string(REGEX MATCH "^\\d+" FILAMENT_NDK_VERSION ${FILAMENT_NDK_VERSION})
 endif()
-message(STATUS "Using NDK \'${FILAMENT_NDK_VERSION}\'")
-
 file(GLOB NDK_VERSIONS LIST_DIRECTORIES true ${ANDROID_HOME_UNIX}/ndk/${FILAMENT_NDK_VERSION}*)
 list(SORT NDK_VERSIONS)
 list(GET NDK_VERSIONS -1 NDK_VERSION)

build/toolchain-x86_64-linux-android.cmake

@@ -31,16 +31,10 @@ set(DIST_ARCH x86_64)
 string(TOLOWER ${CMAKE_HOST_SYSTEM_NAME} HOST_NAME_L)
 file(TO_CMAKE_PATH $ENV{ANDROID_HOME} ANDROID_HOME_UNIX)
 
-message(STATUS "Try using NDK \'${FILAMENT_NDK_VERSION}\'")
 if (NOT FILAMENT_NDK_VERSION)
-    file(READ "${CMAKE_CURRENT_LIST_DIR}/common/versions" VERSIONS_STR)
-    string(REGEX MATCH "GITHUB_NDK_VERSION=(\\d+)" _UNUSED ${VERSIONS_STR})
-    if(CMAKE_MATCH_1)
-        set(FILAMENT_NDK_VERSION "${CMAKE_MATCH_1}")
-    endif()
+    file(READ "${CMAKE_CURRENT_LIST_DIR}/android/ndk.version" FILAMENT_NDK_VERSION)
+    string(REGEX MATCH "^\\d+" FILAMENT_NDK_VERSION ${FILAMENT_NDK_VERSION})
 endif()
-message(STATUS "Using NDK \'${FILAMENT_NDK_VERSION}\'")
-
 file(GLOB NDK_VERSIONS LIST_DIRECTORIES true ${ANDROID_HOME_UNIX}/ndk/${FILAMENT_NDK_VERSION}*)
 list(SORT NDK_VERSIONS)
 list(GET NDK_VERSIONS -1 NDK_VERSION)

build/web/build.sh

@@ -1,10 +1,34 @@
 #!/bin/bash
 
-source `dirname $0`/../common/ci-check.sh
+# Usage: the first argument selects the build type:
+# - release, to build release only
+# - debug, to build debug only
+# - continuous, to build release and debug
+# - presubmit, for presubmit builds
+#
+# The default is release
+
+echo "This script is intended to run in a CI environment and may modify your current environment."
+echo "Please refer to BUILDING.md for more information."
+
+read -r -p "Do you wish to proceed (y/n)? " choice
+case "${choice}" in
+    y|Y)
+	      echo "Build will proceed..."
+	      ;;
+    n|N)
+    	  exit 0
+    	  ;;
+	  *)
+        exit 0
+        ;;
+esac
 
 set -e
 set -x
 
+source `dirname $0`/../common/ci-common.sh
+source `dirname $0`/ci-common.sh
 source `dirname $0`/../common/build-common.sh
 pushd `dirname $0`/../.. > /dev/null
 

build/web/ci-common.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+if [ `uname` == "Linux" ];then
+    source `dirname $0`/../linux/ci-common.sh
+elif [ `uname` == "Darwin" ];then
+    curl -OL https://github.com/ninja-build/ninja/releases/download/v1.10.2/ninja-mac.zip
+    unzip -q ninja-mac.zip
+else
+    echo "Unsupported OS"
+    exit 1
+fi
+
+chmod +x ninja
+export PATH="$PWD:$PATH"
+
+# Install emscripten.
+curl -L https://github.com/emscripten-core/emsdk/archive/refs/tags/3.1.60.zip > emsdk.zip
+unzip emsdk.zip ; mv emsdk-* emsdk ; cd emsdk
+./emsdk install latest
+./emsdk activate latest
+source ./emsdk_env.sh
+
+export EMSDK="$PWD"
+cd ..

docs/Materials.html

@@ -166,7 +166,7 @@ This document is part of the <a href="https://github.com/google/filament">Filame
 </p><ul>
 <li class="minus"><a href="https://github.com/romainguy">Romain Guy</a>, <a href="https://twitter.com/romainguy">@romainguy</a>
 </li>
-<li class="minus"><a href="https://github.com/pixelflinger">Mathias Agopian</a>, <a href="https://bsky.app/profile/pixelflinger.bsky.social">@pixelflinger</a></li></ul>
+<li class="minus"><a href="https://github.com/pixelflinger">Mathias Agopian</a>, <a href="https://twitter.com/darthmoosious">@darthmoosious</a></li></ul>
 
 <p></p>
 <a class="target" name="overview">&nbsp;</a><a class="target" name="overview">&nbsp;</a><a class="target" name="toc2">&nbsp;</a><h1>Overview</h1>
@@ -259,27 +259,26 @@ in <a href="#table_standardproperties">table&nbsp;1</a>.
 </p><div class="table">
 <table class="table"><tbody><tr><th style="text-align:right"> Property </th><th style="text-align:left"> Definition </th></tr>
 <tr><td style="text-align:right"> <strong class="asterisk">baseColor</strong> </td><td style="text-align:left"> Diffuse albedo for non-metallic surfaces, and specular color for metallic surfaces </td></tr>
-<tr><td style="text-align:right"> <strong class="asterisk">roughness</strong> </td><td style="text-align:left"> Perceived smoothness (1.0) or roughness (0.0) of a surface. Smooth surfaces exhibit sharp reflections </td></tr>
 <tr><td style="text-align:right"> <strong class="asterisk">metallic</strong> </td><td style="text-align:left"> Whether a surface appears to be dielectric (0.0) or conductor (1.0). Often used as a binary value (0 or 1) </td></tr>
+<tr><td style="text-align:right"> <strong class="asterisk">roughness</strong> </td><td style="text-align:left"> Perceived smoothness (1.0) or roughness (0.0) of a surface. Smooth surfaces exhibit sharp reflections </td></tr>
 <tr><td style="text-align:right"> <strong class="asterisk">reflectance</strong> </td><td style="text-align:left"> Fresnel reflectance at normal incidence for dielectric surfaces. This directly controls the strength of the reflections </td></tr>
-<tr><td style="text-align:right"> <strong class="asterisk">ambientOcclusion</strong> </td><td style="text-align:left"> Defines how much of the ambient light is accessible to a surface point. It is a per-pixel shadowing factor between 0.0 and 1.0 </td></tr>
-<tr><td style="text-align:right"> <strong class="asterisk">clearCoat</strong> </td><td style="text-align:left"> Strength of the clear coat layer </td></tr>
-<tr><td style="text-align:right"> <strong class="asterisk">clearCoatRoughness</strong> </td><td style="text-align:left"> Perceived smoothness or roughness of the clear coat layer </td></tr>
-<tr><td style="text-align:right"> <strong class="asterisk">clearCoatNormal</strong> </td><td style="text-align:left"> A detail normal used to perturb the clear coat layer using <em class="underscore">bump mapping</em> (<em class="underscore">normal mapping</em>) </td></tr>
-<tr><td style="text-align:right"> <strong class="asterisk">anisotropy</strong> </td><td style="text-align:left"> Amount of anisotropy in either the tangent or bitangent direction </td></tr>
-<tr><td style="text-align:right"> <strong class="asterisk">anisotropyDirection</strong> </td><td style="text-align:left"> Local surface direction in tangent space </td></tr>
-<tr><td style="text-align:right"> <strong class="asterisk">thickness</strong> </td><td style="text-align:left"> Thickness of the solid volume of refractive objects </td></tr>
 <tr><td style="text-align:right"> <strong class="asterisk">sheenColor</strong> </td><td style="text-align:left"> Strength of the sheen layer </td></tr>
 <tr><td style="text-align:right"> <strong class="asterisk">sheenRoughness</strong> </td><td style="text-align:left"> Perceived smoothness or roughness of the sheen layer </td></tr>
-<tr><td style="text-align:right"> <strong class="asterisk">emissive</strong> </td><td style="text-align:left"> Additional diffuse albedo to simulate emissive surfaces (such as neons, etc.) This property is mostly useful in an HDR pipeline with a bloom pass </td></tr>
+<tr><td style="text-align:right"> <strong class="asterisk">clearCoat</strong> </td><td style="text-align:left"> Strength of the clear coat layer </td></tr>
+<tr><td style="text-align:right"> <strong class="asterisk">clearCoatRoughness</strong> </td><td style="text-align:left"> Perceived smoothness or roughness of the clear coat layer </td></tr>
+<tr><td style="text-align:right"> <strong class="asterisk">anisotropy</strong> </td><td style="text-align:left"> Amount of anisotropy in either the tangent or bitangent direction </td></tr>
+<tr><td style="text-align:right"> <strong class="asterisk">anisotropyDirection</strong> </td><td style="text-align:left"> Local surface direction in tangent space </td></tr>
+<tr><td style="text-align:right"> <strong class="asterisk">ambientOcclusion</strong> </td><td style="text-align:left"> Defines how much of the ambient light is accessible to a surface point. It is a per-pixel shadowing factor between 0.0 and 1.0 </td></tr>
 <tr><td style="text-align:right"> <strong class="asterisk">normal</strong> </td><td style="text-align:left"> A detail normal used to perturb the surface using <em class="underscore">bump mapping</em> (<em class="underscore">normal mapping</em>) </td></tr>
-<tr><td style="text-align:right"> <strong class="asterisk">postLightingColor</strong> </td><td style="text-align:left"> Additional color that can be blended with the result of the lighting computations. See <code>postLightingBlending</code> </td></tr>
-<tr><td style="text-align:right"> <strong class="asterisk">absorption</strong> </td><td style="text-align:left"> Absorption factor for refractive objects </td></tr>
-<tr><td style="text-align:right"> <strong class="asterisk">transmission</strong> </td><td style="text-align:left"> Defines how much of the diffuse light of a dielectric is transmitted through the object, in other words this defines how transparent an object is </td></tr>
-<tr><td style="text-align:right"> <strong class="asterisk">ior</strong> </td><td style="text-align:left"> Index of refraction, either for refractive objects or as an alternative to reflectance </td></tr>
-<tr><td style="text-align:right"> <strong class="asterisk">microThickness</strong> </td><td style="text-align:left"> Thickness of the thin layer of refractive objects </td></tr>
 <tr><td style="text-align:right"> <strong class="asterisk">bentNormal</strong> </td><td style="text-align:left"> A normal pointing in the average unoccluded direction. Can be used to improve indirect lighting quality </td></tr>
-<tr><td style="text-align:right"> <strong class="asterisk">shadowStrength</strong> </td><td style="text-align:left"> Strength factor between 0 and 1 for all shadows received by this material </td></tr>
+<tr><td style="text-align:right"> <strong class="asterisk">clearCoatNormal</strong> </td><td style="text-align:left"> A detail normal used to perturb the clear coat layer using <em class="underscore">bump mapping</em> (<em class="underscore">normal mapping</em>) </td></tr>
+<tr><td style="text-align:right"> <strong class="asterisk">emissive</strong> </td><td style="text-align:left"> Additional diffuse albedo to simulate emissive surfaces (such as neons, etc.) This property is mostly useful in an HDR pipeline with a bloom pass </td></tr>
+<tr><td style="text-align:right"> <strong class="asterisk">postLightingColor</strong> </td><td style="text-align:left"> Additional color that can be blended with the result of the lighting computations. See <code>postLightingBlending</code> </td></tr>
+<tr><td style="text-align:right"> <strong class="asterisk">ior</strong> </td><td style="text-align:left"> Index of refraction, either for refractive objects or as an alternative to reflectance </td></tr>
+<tr><td style="text-align:right"> <strong class="asterisk">transmission</strong> </td><td style="text-align:left"> Defines how much of the diffuse light of a dielectric is transmitted through the object, in other words this defines how transparent an object is </td></tr>
+<tr><td style="text-align:right"> <strong class="asterisk">absorption</strong> </td><td style="text-align:left"> Absorption factor for refractive objects </td></tr>
+<tr><td style="text-align:right"> <strong class="asterisk">microThickness</strong> </td><td style="text-align:left"> Thickness of the thin layer of refractive objects </td></tr>
+<tr><td style="text-align:right"> <strong class="asterisk">thickness</strong> </td><td style="text-align:left"> Thickness of the solid volume of refractive objects </td></tr>
 </tbody></table><center><div class="tablecaption"><a class="target" name="table_standardproperties">&nbsp;</a><b style="font-style:normal;">Table&nbsp;1:</b> Properties of the standard model</div></center></div>
 
 <p></p><p>
@@ -1487,13 +1486,10 @@ non-shader data.
 </p><dl><dt>Type</dt><dd><p>     array of parameter objects
 
 </p></dd><dt>Value</dt><dd><p>      Each entry is an object with the properties <code>name</code> and <code>type</code>, both of <code>string</code> type. The
-      name must be a valid GLSL identifier. Entries have an optional <code>precision</code>, which can be
+      name must be a valid GLSL identifier. Entries also have an optional <code>precision</code>, which can be
       one of <code>default</code> (best precision for the platform, typically <code>high</code> on desktop, <code>medium</code> on
       mobile), <code>low</code>, <code>medium</code>, <code>high</code>. The type must be one of the types described in
-      <a href="#table_materialparamstypes">table&nbsp;14</a>. For Android external textures, entries also have an optional 
-      transformName parameter to specify the name of the material parameter that will be 
-      used to expose the transform matrix associated with the external sampler. In iOS and Vulkan,
-      this will always be identity. 
+      <a href="#table_materialparamstypes">table&nbsp;14</a>.
 
 </p></dd></dl><div class="table">
 <table class="table"><tbody><tr><th style="text-align:left"> Type </th><th style="text-align:left"> Description </th></tr>
@@ -1756,13 +1752,7 @@ non-shader data.
       when selecting any shading model that is not <code>unlit</code>. See the shader sections of this document
       for more information on how to access these attributes from the shaders.
 
-</p></dd></dl><div class="admonition note"><div class="admonition-title"> Interaction with custom variables</div>
-
-<p></p><p>
-
-    When the <code>color</code> attribute is specified, only four custom variables are available instead of five.</p></div>
-
-<p></p><pre class="listing tilde"><code><span class="line">material {</span>
+</p></dd></dl><p></p><pre class="listing tilde"><code><span class="line">material {</span>
 <span class="line">    parameters : [</span>
 <span class="line">        {</span>
 <span class="line">           type : sampler2d,</span>
@@ -1789,7 +1779,7 @@ non-shader data.
 
 </p><dl><dt>Type</dt><dd><p>     array of <code>string</code>
 
-</p></dd><dt>Value</dt><dd><p>      Up to 5 strings, each must be a valid GLSL identifier.
+</p></dd><dt>Value</dt><dd><p>      Up to 4 strings, each must be a valid GLSL identifier.
 
 </p></dd><dt>Description</dt><dd><p>      Defines custom interpolants (or variables) that are output by the material's vertex shader.
       Each entry of the array defines the name of an  interpolant. The full name in the fragment
@@ -1804,14 +1794,7 @@ non-shader data.
       particular if <code>default</code> is specified the default precision is used is the fragment shader
       (<code>mediump</code>) and in the vertex shader (<code>highp</code>).
 
-</p></dd></dl><div class="admonition warning"><div class="admonition-title"> Interaction with required attributes</div>
-
-<p></p><p>
-
-    If the <code>color</code> attribute is specified in the <code>required</code> list, then only four variables can be used
-    instead of five.</p></div>
-
-<p></p><pre class="listing tilde"><code><span class="line">material {</span>
+</p></dd></dl><p></p><pre class="listing tilde"><code><span class="line">material {</span>
 <span class="line">    name : Skybox,</span>
 <span class="line">    parameters : [</span>
 <span class="line">        {</span>

docs/Materials.md.html

@@ -13,7 +13,7 @@ This document is part of the [Filament project](https://github.com/google/filame
 ## Authors
 
 - [Romain Guy](https://github.com/romainguy), [@romainguy](https://twitter.com/romainguy)
-- [Mathias Agopian](https://github.com/pixelflinger), [@pixelflinger](https://bsky.app/profile/pixelflinger.bsky.social)
+- [Mathias Agopian](https://github.com/pixelflinger), [@darthmoosious](https://twitter.com/darthmoosious)
 
 # Overview
 
@@ -78,27 +78,26 @@ in table [standardProperties].
         Property        |      Definition
 -----------------------:|:---------------------
 **baseColor**           | Diffuse albedo for non-metallic surfaces, and specular color for metallic surfaces
-**roughness**           | Perceived smoothness (1.0) or roughness (0.0) of a surface. Smooth surfaces exhibit sharp reflections
 **metallic**            | Whether a surface appears to be dielectric (0.0) or conductor (1.0). Often used as a binary value (0 or 1)
+**roughness**           | Perceived smoothness (1.0) or roughness (0.0) of a surface. Smooth surfaces exhibit sharp reflections
 **reflectance**         | Fresnel reflectance at normal incidence for dielectric surfaces. This directly controls the strength of the reflections
-**ambientOcclusion**    | Defines how much of the ambient light is accessible to a surface point. It is a per-pixel shadowing factor between 0.0 and 1.0
-**clearCoat**           | Strength of the clear coat layer
-**clearCoatRoughness**  | Perceived smoothness or roughness of the clear coat layer
-**clearCoatNormal**     | A detail normal used to perturb the clear coat layer using _bump mapping_ (_normal mapping_)
-**anisotropy**          | Amount of anisotropy in either the tangent or bitangent direction
-**anisotropyDirection** | Local surface direction in tangent space
-**thickness**           | Thickness of the solid volume of refractive objects
 **sheenColor**          | Strength of the sheen layer
 **sheenRoughness**      | Perceived smoothness or roughness of the sheen layer
-**emissive**            | Additional diffuse albedo to simulate emissive surfaces (such as neons, etc.) This property is mostly useful in an HDR pipeline with a bloom pass
+**clearCoat**           | Strength of the clear coat layer
+**clearCoatRoughness**  | Perceived smoothness or roughness of the clear coat layer
+**anisotropy**          | Amount of anisotropy in either the tangent or bitangent direction
+**anisotropyDirection** | Local surface direction in tangent space
+**ambientOcclusion**    | Defines how much of the ambient light is accessible to a surface point. It is a per-pixel shadowing factor between 0.0 and 1.0
 **normal**              | A detail normal used to perturb the surface using _bump mapping_ (_normal mapping_)
-**postLightingColor**   | Additional color that can be blended with the result of the lighting computations. See `postLightingBlending`
-**absorption**          | Absorption factor for refractive objects
-**transmission**        | Defines how much of the diffuse light of a dielectric is transmitted through the object, in other words this defines how transparent an object is
-**ior**                 | Index of refraction, either for refractive objects or as an alternative to reflectance
-**microThickness**      | Thickness of the thin layer of refractive objects
 **bentNormal**          | A normal pointing in the average unoccluded direction. Can be used to improve indirect lighting quality
-**shadowStrength**      | Strength factor between 0 and 1 for all shadows received by this material
+**clearCoatNormal**     | A detail normal used to perturb the clear coat layer using _bump mapping_ (_normal mapping_)
+**emissive**            | Additional diffuse albedo to simulate emissive surfaces (such as neons, etc.) This property is mostly useful in an HDR pipeline with a bloom pass
+**postLightingColor**   | Additional color that can be blended with the result of the lighting computations. See `postLightingBlending`
+**ior**                 | Index of refraction, either for refractive objects or as an alternative to reflectance
+**transmission**        | Defines how much of the diffuse light of a dielectric is transmitted through the object, in other words this defines how transparent an object is
+**absorption**          | Absorption factor for refractive objects
+**microThickness**      | Thickness of the thin layer of refractive objects
+**thickness**           | Thickness of the solid volume of refractive objects
 [Table [standardProperties]: Properties of the standard model]
 
 The type and range of each property is described in table [standardPropertiesTypes].
@@ -1273,9 +1272,6 @@ Description
       when selecting any shading model that is not `unlit`. See the shader sections of this document
       for more information on how to access these attributes from the shaders.
 
-!!! Note: Interaction with custom variables
-    When the `color` attribute is specified, only four custom variables are available instead of five.
-
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ JSON
 material {
     parameters : [
@@ -1306,7 +1302,7 @@ Type
 :    array of `string`
 
 Value
-:     Up to 5 strings, each must be a valid GLSL identifier.
+:     Up to 4 strings, each must be a valid GLSL identifier.
 
 Description
 :     Defines custom interpolants (or variables) that are output by the material's vertex shader.
@@ -1322,10 +1318,6 @@ Description
       particular if `default` is specified the default precision is used is the fragment shader
       (`mediump`) and in the vertex shader (`highp`).
 
-!!! Warning: Interaction with required attributes
-    If the `color` attribute is specified in the `required` list, then only four variables can be used
-    instead of five.
-
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ JSON
 material {
     name : Skybox,

docs/webgl/reference.html

@@ -49,7 +49,7 @@
 </tr>
 <tr>
 <td align="left"><a href="#EntityManager">EntityManager</a></td>
-<td align="left">Singleton used for constructing entities in Filament's ECS.</td>
+<td align="left">Singleton used for constructing entities in Filament&#x27;s ECS.</td>
 </tr>
 <tr>
 <td align="left"><a href="#Frustum">Frustum</a></td>
@@ -89,7 +89,7 @@
 </tr>
 <tr>
 <td align="left"><a href="#Renderer">Renderer</a></td>
-<td align="left">Represents the platform's native window.</td>
+<td align="left">Represents the platform&#x27;s native window.</td>
 </tr>
 <tr>
 <td align="left"><a href="#Scene">Scene</a></td>
@@ -97,7 +97,7 @@
 </tr>
 <tr>
 <td align="left"><a href="#SwapChain">SwapChain</a></td>
-<td align="left">Represents the platform's native rendering surface.</td>
+<td align="left">Represents the platform&#x27;s native rendering surface.</td>
 </tr>
 <tr>
 <td align="left"><a href="#Texture">Texture</a></td>
@@ -604,11 +604,11 @@
 </ul>
 <p>To create an entity with no components, use <a href="#EntityManager">EntityManager</a>.
 TODO: It would be better to expose these as JS numbers rather than as JS objects.
-This would also be more consistent with Filament's Java bindings.</p>
+This would also be more consistent with Filament&#x27;s Java bindings.</p>
 </div>
 <div class='classdoc'>
 <h2>class <a id='EntityManager' href='#EntityManager'>EntityManager</a></h2>
-<p>Singleton used for constructing entities in Filament's ECS.</p>
+<p>Singleton used for constructing entities in Filament&#x27;s ECS.</p>
 <ul>
 <li><strong>entityManager.create()</strong>
 <ul>
@@ -742,7 +742,7 @@ properties.</p>
 </ul>
 </li>
 </ul>
-<p>Be sure to call the instance's <code>delete</code> method when you're done with it.</p>
+<p>Be sure to call the instance&#x27;s <code>delete</code> method when you&#x27;re done with it.</p>
 </div>
 <div class='classdoc'>
 <h2>class <a id='PixelBufferDescriptor' href='#PixelBufferDescriptor'>PixelBufferDescriptor</a></h2>
@@ -780,11 +780,11 @@ properties.</p>
 </ul>
 </li>
 </ul>
-<p>Be sure to call the instance's <code>delete</code> method when you're done with it.</p>
+<p>Be sure to call the instance&#x27;s <code>delete</code> method when you&#x27;re done with it.</p>
 </div>
 <div class='classdoc'>
 <h2>class <a id='Renderer' href='#Renderer'>Renderer</a></h2>
-<p>Represents the platform's native window.</p>
+<p>Represents the platform&#x27;s native window.</p>
 <ul>
 <li><strong>renderer.render(swapChain, view)</strong>
 <ul>
@@ -803,7 +803,7 @@ properties.</p>
 </div>
 <div class='classdoc'>
 <h2>class <a id='SwapChain' href='#SwapChain'>SwapChain</a></h2>
-<p>Represents the platform's native rendering surface.</p>
+<p>Represents the platform&#x27;s native rendering surface.</p>
 <p>See also the <a href="#Engine">Engine</a> methods <code>createSwapChain</code> and <code>destroySwapChain</code>.</p>
 </div>
 <div class='classdoc'>
@@ -847,7 +847,7 @@ properties.</p>
 </ul>
 </li>
 </ul>
-<p>Be sure to call the instance's <code>delete</code> method when you're done with it.</p>
+<p>Be sure to call the instance&#x27;s <code>delete</code> method when you&#x27;re done with it.</p>
 </div>
 <div class='classdoc'>
 <h2>class <a id='VertexBuffer' href='#VertexBuffer'>VertexBuffer</a></h2>
@@ -944,7 +944,7 @@ See also the <a href="#Engine">Engine</a> methods <code>createView</code> and <c
 <ul>
 <li><strong>assets</strong>
 <ul>
-<li>Array of strings containing URL's of required assets.</li>
+<li>Array of strings containing URL&#x27;s of required assets.</li>
 </ul>
 </li>
 <li><strong>onDone</strong>
@@ -954,7 +954,7 @@ See also the <a href="#Engine">Engine</a> methods <code>createView</code> and <c
 </li>
 <li><strong>onFetched</strong>
 <ul>
-<li>optional callback that's invoked after each asset is downloaded.</li>
+<li>optional callback that&#x27;s invoked after each asset is downloaded.</li>
 </ul>
 </li>
 </ul>
@@ -1001,7 +1001,7 @@ useful for compressed textures. For example, some platforms accept ETC and other
 <ul>
 <li><strong>assets</strong>
 <ul>
-<li>Array of strings containing URL's of required assets.</li>
+<li>Array of strings containing URL&#x27;s of required assets.</li>
 </ul>
 </li>
 <li><strong>onready</strong>
@@ -1010,12 +1010,12 @@ useful for compressed textures. For example, some platforms accept ETC and other
 </ul>
 </li>
 </ul>
-<p>All JavaScript clients must call the init function, passing in a list of asset URL's and a
+<p>All JavaScript clients must call the init function, passing in a list of asset URL&#x27;s and a
 callback. This callback gets invoked only after all assets have been downloaded and the Filament
-WebAssembly module has been loaded. Clients should only pass asset URL's that absolutely must
+WebAssembly module has been loaded. Clients should only pass asset URL&#x27;s that absolutely must
 be ready at initialization time.
 When the callback is called, each downloaded asset is available in the <code>Filament.assets</code> global
-object, which contains a mapping from URL's to Uint8Array objects.</p>
+object, which contains a mapping from URL&#x27;s to Uint8Array objects.</p>
 </div>
 <div class='funcdoc'>
 <h2>function <a id='loadMathExtensions' href='#loadMathExtensions'>loadMathExtensions</a>()</h2>

docs/webgl/tutorial_redball.html

@@ -10,7 +10,7 @@
 textures.</p>
 <p>For starters, create a text file called <code>redball.html</code> and copy over the HTML that we used in the
 <a href="tutorial_triangle.html">previous tutorial</a>. Change the last script tag from <code>triangle.js</code> to <code>redball.js</code>.</p>
-<p>Next you'll need to get a couple command-line tools: <code>matc</code> and <code>cmgen</code>. You can find these in the
+<p>Next you&#x27;ll need to get a couple command-line tools: <code>matc</code> and <code>cmgen</code>. You can find these in the
 appropriate <a href="//github.com/google/filament/releases">Filament release</a>. You should choose the
 archive that corresponds to your development machine rather than the one for web, and the version
 that matches the <code>unpkg.com/filament@x.x.x</code> url in the script tag of <code>redball.html</code> (you may check
@@ -19,7 +19,7 @@ out the last available release of <a href="https://www.npmjs.com/package/filamen
 <p>The <code>matc</code> tool consumes a text file containing a high-level description of a PBR material, and
 produces a binary material package that contains shader code and associated metadata. For more
 information, see the official document describing the <a href="https://google.github.io/filament/Materials.md.html">Filament Material System</a>.</p>
-<p>Let's try out <code>matc</code>. Create the following file in your favorite text editor and call it
+<p>Let&#x27;s try out <code>matc</code>. Create the following file in your favorite text editor and call it
 <code>plastic.mat</code>.</p>
 <div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span>material {
     name : Lit,
@@ -44,16 +44,16 @@ fragment {
 </pre></div>
 
 <p>Next, invoke <code>matc</code> as follows.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span>matc<span style="color: #BBB"> </span>-a<span style="color: #BBB"> </span>opengl<span style="color: #BBB"> </span>-p<span style="color: #BBB"> </span>mobile<span style="color: #BBB"> </span>-o<span style="color: #BBB"> </span>plastic.filamat<span style="color: #BBB"> </span>plastic.mat
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span>matc -a opengl -p mobile -o plastic.filamat plastic.mat
 </pre></div>
 
-<p>You should now have a material archive in your working directory, which we'll use later in the
+<p>You should now have a material archive in your working directory, which we&#x27;ll use later in the
 tutorial.</p>
 <h2>Bake environment map</h2>
-<p>Next we'll use Filament's <code>cmgen</code> tool to consume a HDR environment map in latlong format, and
+<p>Next we&#x27;ll use Filament&#x27;s <code>cmgen</code> tool to consume a HDR environment map in latlong format, and
 produce two cubemap files: a mipmapped IBL and a blurry skybox.</p>
 <p>Download <a href="//github.com/google/filament/blob/main/third_party/environments/pillars_2k.hdr">pillars_2k.hdr</a>, then invoke the following command in your terminal.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span>cmgen<span style="color: #BBB"> </span>-x<span style="color: #BBB"> </span>pillars_2k<span style="color: #BBB"> </span>--format<span style="color: #666">=</span>ktx<span style="color: #BBB"> </span>--size<span style="color: #666">=256</span><span style="color: #BBB"> </span>--extract-blur<span style="color: #666">=0</span>.1<span style="color: #BBB"> </span>pillars_2k.hdr
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span>cmgen -x pillars_2k --format<span style="color: #666666">=</span>ktx --size<span style="color: #666666">=256</span> --extract-blur<span style="color: #666666">=0</span>.1 pillars_2k.hdr
 </pre></div>
 
 <p>You should now have a <code>pillars_2k</code> folder containing a couple KTX files for the IBL and skybox, as
@@ -61,84 +61,84 @@ well as a text file with spherical harmonics coefficients. You can discard the t
 IBL KTX contains these coefficients in its metadata.</p>
 <h2>Create JavaScript</h2>
 <p>Next, create <code>redball.js</code> with the following content.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>environ<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #BA2121">&#39;pillars_2k&#39;</span>;
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>ibl_url<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #BA2121">`</span><span style="color: #A45A77; font-weight: bold">${</span>environ<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">/</span><span style="color: #A45A77; font-weight: bold">${</span>environ<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">_ibl.ktx`</span>;
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>sky_url<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #BA2121">`</span><span style="color: #A45A77; font-weight: bold">${</span>environ<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">/</span><span style="color: #A45A77; font-weight: bold">${</span>environ<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">_skybox.ktx`</span>;
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>filamat_url<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #BA2121">&#39;plastic.filamat&#39;</span>
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>environ<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #BA2121">&#39;pillars_2k&#39;</span>;<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>ibl_url<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #BA2121">`</span><span style="color: #A45A77; font-weight: bold">${</span>environ<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">/</span><span style="color: #A45A77; font-weight: bold">${</span>environ<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">_ibl.ktx`</span>;<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>sky_url<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #BA2121">`</span><span style="color: #A45A77; font-weight: bold">${</span>environ<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">/</span><span style="color: #A45A77; font-weight: bold">${</span>environ<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">_skybox.ktx`</span>;<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>filamat_url<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #BA2121">&#39;plastic.filamat&#39;</span><span style="color: #bbbbbb"></span>
 
-Filament.init([<span style="color: #BBB"> </span>filamat_url,<span style="color: #BBB"> </span>ibl_url,<span style="color: #BBB"> </span>sky_url<span style="color: #BBB"> </span>],<span style="color: #BBB"> </span>()<span style="color: #BBB"> </span>=&gt;<span style="color: #BBB"> </span>{
-<span style="color: #BBB">  </span><span style="color: #3D7B7B; font-style: italic">// Create some global aliases to enums for convenience.</span>
-<span style="color: #BBB">  </span><span style="color: #008000">window</span>.VertexAttribute<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.VertexAttribute;
-<span style="color: #BBB">  </span><span style="color: #008000">window</span>.AttributeType<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.VertexBuffer$AttributeType;
-<span style="color: #BBB">  </span><span style="color: #008000">window</span>.PrimitiveType<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.RenderableManager$PrimitiveType;
-<span style="color: #BBB">  </span><span style="color: #008000">window</span>.IndexType<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.IndexBuffer$IndexType;
-<span style="color: #BBB">  </span><span style="color: #008000">window</span>.Fov<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.Camera$Fov;
-<span style="color: #BBB">  </span><span style="color: #008000">window</span>.LightType<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.LightManager$Type;
+Filament.init([<span style="color: #bbbbbb"> </span>filamat_url,<span style="color: #bbbbbb"> </span>ibl_url,<span style="color: #bbbbbb"> </span>sky_url<span style="color: #bbbbbb"> </span>],<span style="color: #bbbbbb"> </span>()<span style="color: #bbbbbb"> </span>=&gt;<span style="color: #bbbbbb"> </span>{<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span><span style="color: #3D7B7B; font-style: italic">// Create some global aliases to enums for convenience.</span><span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span><span style="color: #008000">window</span>.VertexAttribute<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.VertexAttribute;<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span><span style="color: #008000">window</span>.AttributeType<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.VertexBuffer$AttributeType;<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span><span style="color: #008000">window</span>.PrimitiveType<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.RenderableManager$PrimitiveType;<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span><span style="color: #008000">window</span>.IndexType<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.IndexBuffer$IndexType;<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span><span style="color: #008000">window</span>.Fov<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.Camera$Fov;<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span><span style="color: #008000">window</span>.LightType<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.LightManager$Type;<span style="color: #bbbbbb"></span>
 
-<span style="color: #BBB">  </span><span style="color: #3D7B7B; font-style: italic">// Obtain the canvas DOM object and pass it to the App.</span>
-<span style="color: #BBB">  </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>canvas<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000">document</span>.getElementsByTagName(<span style="color: #BA2121">&#39;canvas&#39;</span>)[<span style="color: #666">0</span>];
-<span style="color: #BBB">  </span><span style="color: #008000">window</span>.app<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #A2F; font-weight: bold">new</span><span style="color: #BBB"> </span>App(canvas);
-}<span style="color: #BBB"> </span>);
+<span style="color: #bbbbbb">  </span><span style="color: #3D7B7B; font-style: italic">// Obtain the canvas DOM object and pass it to the App.</span><span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>canvas<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000">document</span>.getElementsByTagName(<span style="color: #BA2121">&#39;canvas&#39;</span>)[<span style="color: #666666">0</span>];<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span><span style="color: #008000">window</span>.app<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #AA22FF; font-weight: bold">new</span><span style="color: #bbbbbb"> </span>App(canvas);<span style="color: #bbbbbb"></span>
+}<span style="color: #bbbbbb"> </span>);<span style="color: #bbbbbb"></span>
 
-<span style="color: #008000; font-weight: bold">class</span><span style="color: #BBB"> </span>App<span style="color: #BBB"> </span>{
-<span style="color: #BBB">  </span><span style="color: #008000; font-weight: bold">constructor</span>(canvas)<span style="color: #BBB"> </span>{
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.canvas<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>canvas;
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>engine<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.engine<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.Engine.create(canvas);
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>scene<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>engine.createScene();
+<span style="color: #008000; font-weight: bold">class</span><span style="color: #bbbbbb"> </span>App<span style="color: #bbbbbb"> </span>{<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span><span style="color: #008000; font-weight: bold">constructor</span>(canvas)<span style="color: #bbbbbb"> </span>{<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.canvas<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>canvas;<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>engine<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.engine<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.Engine.create(canvas);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>scene<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>engine.createScene();<span style="color: #bbbbbb"></span>
 
-<span style="color: #BBB">    </span><span style="color: #3D7B7B; font-style: italic">// TODO: create material</span>
-<span style="color: #BBB">    </span><span style="color: #3D7B7B; font-style: italic">// TODO: create sphere</span>
-<span style="color: #BBB">    </span><span style="color: #3D7B7B; font-style: italic">// TODO: create lights</span>
-<span style="color: #BBB">    </span><span style="color: #3D7B7B; font-style: italic">// TODO: create IBL</span>
-<span style="color: #BBB">    </span><span style="color: #3D7B7B; font-style: italic">// TODO: create skybox</span>
+<span style="color: #bbbbbb">    </span><span style="color: #3D7B7B; font-style: italic">// TODO: create material</span><span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #3D7B7B; font-style: italic">// TODO: create sphere</span><span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #3D7B7B; font-style: italic">// TODO: create lights</span><span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #3D7B7B; font-style: italic">// TODO: create IBL</span><span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #3D7B7B; font-style: italic">// TODO: create skybox</span><span style="color: #bbbbbb"></span>
 
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.swapChain<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>engine.createSwapChain();
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.renderer<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>engine.createRenderer();
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.camera<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>engine.createCamera(Filament.EntityManager.get().create());
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.view<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>engine.createView();
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.view.setCamera(<span style="color: #008000; font-weight: bold">this</span>.camera);
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.view.setScene(scene);
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.resize();
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.render<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.render.bind(<span style="color: #008000; font-weight: bold">this</span>);
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.resize<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.resize.bind(<span style="color: #008000; font-weight: bold">this</span>);
-<span style="color: #BBB">    </span><span style="color: #008000">window</span>.addEventListener(<span style="color: #BA2121">&#39;resize&#39;</span>,<span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.resize);
-<span style="color: #BBB">    </span><span style="color: #008000">window</span>.requestAnimationFrame(<span style="color: #008000; font-weight: bold">this</span>.render);
-<span style="color: #BBB">  </span>}
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.swapChain<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>engine.createSwapChain();<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.renderer<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>engine.createRenderer();<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.camera<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>engine.createCamera(Filament.EntityManager.get().create());<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.view<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>engine.createView();<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.view.setCamera(<span style="color: #008000; font-weight: bold">this</span>.camera);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.view.setScene(scene);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.resize();<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.render<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.render.bind(<span style="color: #008000; font-weight: bold">this</span>);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.resize<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.resize.bind(<span style="color: #008000; font-weight: bold">this</span>);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000">window</span>.addEventListener(<span style="color: #BA2121">&#39;resize&#39;</span>,<span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.resize);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000">window</span>.requestAnimationFrame(<span style="color: #008000; font-weight: bold">this</span>.render);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>}<span style="color: #bbbbbb"></span>
 
-<span style="color: #BBB">  </span>render()<span style="color: #BBB"> </span>{
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>eye<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>[<span style="color: #666">0</span>,<span style="color: #BBB"> </span><span style="color: #666">0</span>,<span style="color: #BBB"> </span><span style="color: #666">4</span>],<span style="color: #BBB"> </span>center<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>[<span style="color: #666">0</span>,<span style="color: #BBB"> </span><span style="color: #666">0</span>,<span style="color: #BBB"> </span><span style="color: #666">0</span>],<span style="color: #BBB"> </span>up<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>[<span style="color: #666">0</span>,<span style="color: #BBB"> </span><span style="color: #666">1</span>,<span style="color: #BBB"> </span><span style="color: #666">0</span>];
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>radians<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000">Date</span>.now()<span style="color: #BBB"> </span><span style="color: #666">/</span><span style="color: #BBB"> </span><span style="color: #666">10000</span>;
-<span style="color: #BBB">    </span>vec3.rotateY(eye,<span style="color: #BBB"> </span>eye,<span style="color: #BBB"> </span>center,<span style="color: #BBB"> </span>radians);
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.camera.lookAt(eye,<span style="color: #BBB"> </span>center,<span style="color: #BBB"> </span>up);
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.renderer.render(<span style="color: #008000; font-weight: bold">this</span>.swapChain,<span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.view);
-<span style="color: #BBB">    </span><span style="color: #008000">window</span>.requestAnimationFrame(<span style="color: #008000; font-weight: bold">this</span>.render);
-<span style="color: #BBB">  </span>}
+<span style="color: #bbbbbb">  </span>render()<span style="color: #bbbbbb"> </span>{<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>eye<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>[<span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">4</span>],<span style="color: #bbbbbb"> </span>center<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>[<span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>],<span style="color: #bbbbbb"> </span>up<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>[<span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">1</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>];<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>radians<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000">Date</span>.now()<span style="color: #bbbbbb"> </span><span style="color: #666666">/</span><span style="color: #bbbbbb"> </span><span style="color: #666666">10000</span>;<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span>vec3.rotateY(eye,<span style="color: #bbbbbb"> </span>eye,<span style="color: #bbbbbb"> </span>center,<span style="color: #bbbbbb"> </span>radians);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.camera.lookAt(eye,<span style="color: #bbbbbb"> </span>center,<span style="color: #bbbbbb"> </span>up);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.renderer.render(<span style="color: #008000; font-weight: bold">this</span>.swapChain,<span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.view);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000">window</span>.requestAnimationFrame(<span style="color: #008000; font-weight: bold">this</span>.render);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>}<span style="color: #bbbbbb"></span>
 
-<span style="color: #BBB">  </span>resize()<span style="color: #BBB"> </span>{
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>dpr<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000">window</span>.devicePixelRatio;
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>width<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.canvas.width<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000">window</span>.innerWidth<span style="color: #BBB"> </span><span style="color: #666">*</span><span style="color: #BBB"> </span>dpr;
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>height<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.canvas.height<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000">window</span>.innerHeight<span style="color: #BBB"> </span><span style="color: #666">*</span><span style="color: #BBB"> </span>dpr;
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.view.setViewport([<span style="color: #666">0</span>,<span style="color: #BBB"> </span><span style="color: #666">0</span>,<span style="color: #BBB"> </span>width,<span style="color: #BBB"> </span>height]);
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.camera.setProjectionFov(<span style="color: #666">45</span>,<span style="color: #BBB"> </span>width<span style="color: #BBB"> </span><span style="color: #666">/</span><span style="color: #BBB"> </span>height,<span style="color: #BBB"> </span><span style="color: #666">1.0</span>,<span style="color: #BBB"> </span><span style="color: #666">10.0</span>,<span style="color: #BBB"> </span>Fov.VERTICAL);
-<span style="color: #BBB">  </span>}
-}
+<span style="color: #bbbbbb">  </span>resize()<span style="color: #bbbbbb"> </span>{<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>dpr<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000">window</span>.devicePixelRatio;<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>width<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.canvas.width<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000">window</span>.innerWidth<span style="color: #bbbbbb"> </span><span style="color: #666666">*</span><span style="color: #bbbbbb"> </span>dpr;<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>height<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.canvas.height<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000">window</span>.innerHeight<span style="color: #bbbbbb"> </span><span style="color: #666666">*</span><span style="color: #bbbbbb"> </span>dpr;<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.view.setViewport([<span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span>width,<span style="color: #bbbbbb"> </span>height]);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.camera.setProjectionFov(<span style="color: #666666">45</span>,<span style="color: #bbbbbb"> </span>width<span style="color: #bbbbbb"> </span><span style="color: #666666">/</span><span style="color: #bbbbbb"> </span>height,<span style="color: #bbbbbb"> </span><span style="color: #666666">1.0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">10.0</span>,<span style="color: #bbbbbb"> </span>Fov.VERTICAL);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>}<span style="color: #bbbbbb"></span>
+}<span style="color: #bbbbbb"></span>
 </pre></div>
 
 <p>The above boilerplate should be familiar to you from the previous tutorial, although it loads in a
 new set of assets. We also added some animation to the camera.</p>
-<p>Next let's create a material instance from the package that we built at the beginning the tutorial.
+<p>Next let&#x27;s create a material instance from the package that we built at the beginning the tutorial.
 Replace the <strong>create material</strong> comment with the following snippet.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>material<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>engine.createMaterial(filamat_url);
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>matinstance<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>material.createInstance();
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>material<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>engine.createMaterial(filamat_url);<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>matinstance<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>material.createInstance();<span style="color: #bbbbbb"></span>
 
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>red<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>[<span style="color: #666">0.8</span>,<span style="color: #BBB"> </span><span style="color: #666">0.0</span>,<span style="color: #BBB"> </span><span style="color: #666">0.0</span>];
-matinstance.setColor3Parameter(<span style="color: #BA2121">&#39;baseColor&#39;</span>,<span style="color: #BBB"> </span>Filament.RgbType.sRGB,<span style="color: #BBB"> </span>red);
-matinstance.setFloatParameter(<span style="color: #BA2121">&#39;roughness&#39;</span>,<span style="color: #BBB"> </span><span style="color: #666">0.5</span>);
-matinstance.setFloatParameter(<span style="color: #BA2121">&#39;clearCoat&#39;</span>,<span style="color: #BBB"> </span><span style="color: #666">1.0</span>);
-matinstance.setFloatParameter(<span style="color: #BA2121">&#39;clearCoatRoughness&#39;</span>,<span style="color: #BBB"> </span><span style="color: #666">0.3</span>);
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>red<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>[<span style="color: #666666">0.8</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0.0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0.0</span>];<span style="color: #bbbbbb"></span>
+matinstance.setColor3Parameter(<span style="color: #BA2121">&#39;baseColor&#39;</span>,<span style="color: #bbbbbb"> </span>Filament.RgbType.sRGB,<span style="color: #bbbbbb"> </span>red);<span style="color: #bbbbbb"></span>
+matinstance.setFloatParameter(<span style="color: #BA2121">&#39;roughness&#39;</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0.5</span>);<span style="color: #bbbbbb"></span>
+matinstance.setFloatParameter(<span style="color: #BA2121">&#39;clearCoat&#39;</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">1.0</span>);<span style="color: #bbbbbb"></span>
+matinstance.setFloatParameter(<span style="color: #BA2121">&#39;clearCoatRoughness&#39;</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0.3</span>);<span style="color: #bbbbbb"></span>
 </pre></div>
 
-<p>The next step is to create a renderable for the sphere. To help with this, we'll use the <code>IcoSphere</code>
+<p>The next step is to create a renderable for the sphere. To help with this, we&#x27;ll use the <code>IcoSphere</code>
 utility class, whose constructor takes a LOD. Its job is to subdivide an icosadedron, producing
 three arrays:</p>
 <ul>
@@ -147,137 +147,137 @@ three arrays:</p>
 as quaternions.</li>
 <li><code>icosphere.triangles</code> Uint16Array with triangle indices.</li>
 </ul>
-<p>Let's go ahead use these arrays to build the vertex buffer and index buffer. Replace <strong>create
+<p>Let&#x27;s go ahead use these arrays to build the vertex buffer and index buffer. Replace <strong>create
 sphere</strong> with the following snippet.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>renderable<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.EntityManager.get().create();
-scene.addEntity(renderable);
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>renderable<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.EntityManager.get().create();<span style="color: #bbbbbb"></span>
+scene.addEntity(renderable);<span style="color: #bbbbbb"></span>
 
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>icosphere<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #A2F; font-weight: bold">new</span><span style="color: #BBB"> </span>Filament.IcoSphere(<span style="color: #666">5</span>);
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>icosphere<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #AA22FF; font-weight: bold">new</span><span style="color: #bbbbbb"> </span>Filament.IcoSphere(<span style="color: #666666">5</span>);<span style="color: #bbbbbb"></span>
 
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>vb<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.VertexBuffer.Builder()
-<span style="color: #BBB">  </span>.vertexCount(icosphere.vertices.length<span style="color: #BBB"> </span><span style="color: #666">/</span><span style="color: #BBB"> </span><span style="color: #666">3</span>)
-<span style="color: #BBB">  </span>.bufferCount(<span style="color: #666">2</span>)
-<span style="color: #BBB">  </span>.attribute(VertexAttribute.POSITION,<span style="color: #BBB"> </span><span style="color: #666">0</span>,<span style="color: #BBB"> </span>AttributeType.FLOAT3,<span style="color: #BBB"> </span><span style="color: #666">0</span>,<span style="color: #BBB"> </span><span style="color: #666">0</span>)
-<span style="color: #BBB">  </span>.attribute(VertexAttribute.TANGENTS,<span style="color: #BBB"> </span><span style="color: #666">1</span>,<span style="color: #BBB"> </span>AttributeType.SHORT4,<span style="color: #BBB"> </span><span style="color: #666">0</span>,<span style="color: #BBB"> </span><span style="color: #666">0</span>)
-<span style="color: #BBB">  </span>.normalized(VertexAttribute.TANGENTS)
-<span style="color: #BBB">  </span>.build(engine);
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>vb<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.VertexBuffer.Builder()<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.vertexCount(icosphere.vertices.length<span style="color: #bbbbbb"> </span><span style="color: #666666">/</span><span style="color: #bbbbbb"> </span><span style="color: #666666">3</span>)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.bufferCount(<span style="color: #666666">2</span>)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.attribute(VertexAttribute.POSITION,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span>AttributeType.FLOAT3,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.attribute(VertexAttribute.TANGENTS,<span style="color: #bbbbbb"> </span><span style="color: #666666">1</span>,<span style="color: #bbbbbb"> </span>AttributeType.SHORT4,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.normalized(VertexAttribute.TANGENTS)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.build(engine);<span style="color: #bbbbbb"></span>
 
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>ib<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.IndexBuffer.Builder()
-<span style="color: #BBB">  </span>.indexCount(icosphere.triangles.length)
-<span style="color: #BBB">  </span>.bufferType(IndexType.USHORT)
-<span style="color: #BBB">  </span>.build(engine);
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>ib<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.IndexBuffer.Builder()<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.indexCount(icosphere.triangles.length)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.bufferType(IndexType.USHORT)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.build(engine);<span style="color: #bbbbbb"></span>
 
-vb.setBufferAt(engine,<span style="color: #BBB"> </span><span style="color: #666">0</span>,<span style="color: #BBB"> </span>icosphere.vertices);
-vb.setBufferAt(engine,<span style="color: #BBB"> </span><span style="color: #666">1</span>,<span style="color: #BBB"> </span>icosphere.tangents);
-ib.setBuffer(engine,<span style="color: #BBB"> </span>icosphere.triangles);
+vb.setBufferAt(engine,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span>icosphere.vertices);<span style="color: #bbbbbb"></span>
+vb.setBufferAt(engine,<span style="color: #bbbbbb"> </span><span style="color: #666666">1</span>,<span style="color: #bbbbbb"> </span>icosphere.tangents);<span style="color: #bbbbbb"></span>
+ib.setBuffer(engine,<span style="color: #bbbbbb"> </span>icosphere.triangles);<span style="color: #bbbbbb"></span>
 
-Filament.RenderableManager.Builder(<span style="color: #666">1</span>)
-<span style="color: #BBB">  </span>.boundingBox({<span style="color: #BBB"> </span>center<span style="color: #666">:</span><span style="color: #BBB"> </span>[<span style="color: #666">-1</span>,<span style="color: #BBB"> </span><span style="color: #666">-1</span>,<span style="color: #BBB"> </span><span style="color: #666">-1</span>],<span style="color: #BBB"> </span>halfExtent<span style="color: #666">:</span><span style="color: #BBB"> </span>[<span style="color: #666">1</span>,<span style="color: #BBB"> </span><span style="color: #666">1</span>,<span style="color: #BBB"> </span><span style="color: #666">1</span>]<span style="color: #BBB"> </span>})
-<span style="color: #BBB">  </span>.material(<span style="color: #666">0</span>,<span style="color: #BBB"> </span>matinstance)
-<span style="color: #BBB">  </span>.geometry(<span style="color: #666">0</span>,<span style="color: #BBB"> </span>PrimitiveType.TRIANGLES,<span style="color: #BBB"> </span>vb,<span style="color: #BBB"> </span>ib)
-<span style="color: #BBB">  </span>.build(engine,<span style="color: #BBB"> </span>renderable);
+Filament.RenderableManager.Builder(<span style="color: #666666">1</span>)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.boundingBox({<span style="color: #bbbbbb"> </span>center<span style="color: #666666">:</span><span style="color: #bbbbbb"> </span>[<span style="color: #666666">-1</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">-1</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">-1</span>],<span style="color: #bbbbbb"> </span>halfExtent<span style="color: #666666">:</span><span style="color: #bbbbbb"> </span>[<span style="color: #666666">1</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">1</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">1</span>]<span style="color: #bbbbbb"> </span>})<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.material(<span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span>matinstance)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.geometry(<span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span>PrimitiveType.TRIANGLES,<span style="color: #bbbbbb"> </span>vb,<span style="color: #bbbbbb"> </span>ib)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.build(engine,<span style="color: #bbbbbb"> </span>renderable);<span style="color: #bbbbbb"></span>
 </pre></div>
 
-<p>At this point, the app is rendering a sphere, but it is black so it doesn't show up. To prove that
+<p>At this point, the app is rendering a sphere, but it is black so it doesn&#x27;t show up. To prove that
 the sphere is there, you can try changing the background color to blue via <code>setClearColor</code>, like we
 did in the first tutorial.</p>
 <h2>Add lighting</h2>
 <p>In this section we will create some directional light sources, as well as an image-based light (IBL)
 defined by one of the KTX files we built at the start of the demo. First, replace the <strong>create
 lights</strong> comment with the following snippet.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>sunlight<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.EntityManager.get().create();
-scene.addEntity(sunlight);
-Filament.LightManager.Builder(LightType.SUN)
-<span style="color: #BBB">  </span>.color([<span style="color: #666">0.98</span>,<span style="color: #BBB"> </span><span style="color: #666">0.92</span>,<span style="color: #BBB"> </span><span style="color: #666">0.89</span>])
-<span style="color: #BBB">  </span>.intensity(<span style="color: #666">110000.0</span>)
-<span style="color: #BBB">  </span>.direction([<span style="color: #666">0.6</span>,<span style="color: #BBB"> </span><span style="color: #666">-1.0</span>,<span style="color: #BBB"> </span><span style="color: #666">-0.8</span>])
-<span style="color: #BBB">  </span>.sunAngularRadius(<span style="color: #666">1.9</span>)
-<span style="color: #BBB">  </span>.sunHaloSize(<span style="color: #666">10.0</span>)
-<span style="color: #BBB">  </span>.sunHaloFalloff(<span style="color: #666">80.0</span>)
-<span style="color: #BBB">  </span>.build(engine,<span style="color: #BBB"> </span>sunlight);
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>sunlight<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.EntityManager.get().create();<span style="color: #bbbbbb"></span>
+scene.addEntity(sunlight);<span style="color: #bbbbbb"></span>
+Filament.LightManager.Builder(LightType.SUN)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.color([<span style="color: #666666">0.98</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0.92</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0.89</span>])<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.intensity(<span style="color: #666666">110000.0</span>)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.direction([<span style="color: #666666">0.6</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">-1.0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">-0.8</span>])<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.sunAngularRadius(<span style="color: #666666">1.9</span>)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.sunHaloSize(<span style="color: #666666">10.0</span>)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.sunHaloFalloff(<span style="color: #666666">80.0</span>)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.build(engine,<span style="color: #bbbbbb"> </span>sunlight);<span style="color: #bbbbbb"></span>
 
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>backlight<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.EntityManager.get().create();
-scene.addEntity(backlight);
-Filament.LightManager.Builder(LightType.DIRECTIONAL)
-<span style="color: #BBB">        </span>.direction([<span style="color: #666">-1</span>,<span style="color: #BBB"> </span><span style="color: #666">0</span>,<span style="color: #BBB"> </span><span style="color: #666">1</span>])
-<span style="color: #BBB">        </span>.intensity(<span style="color: #666">50000.0</span>)
-<span style="color: #BBB">        </span>.build(engine,<span style="color: #BBB"> </span>backlight);
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>backlight<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.EntityManager.get().create();<span style="color: #bbbbbb"></span>
+scene.addEntity(backlight);<span style="color: #bbbbbb"></span>
+Filament.LightManager.Builder(LightType.DIRECTIONAL)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span>.direction([<span style="color: #666666">-1</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">1</span>])<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span>.intensity(<span style="color: #666666">50000.0</span>)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span>.build(engine,<span style="color: #bbbbbb"> </span>backlight);<span style="color: #bbbbbb"></span>
 </pre></div>
 
 <p>The <code>SUN</code> light source is similar to the <code>DIRECTIONAL</code> light source, but has some extra
 parameters because Filament will automatically draw a disk into the skybox.</p>
 <p>Next we need to create an <code>IndirectLight</code> object from the KTX IBL. One way of doing this is the
-following (don't type this out, there's an easier way).</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>format<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.PixelDataFormat.RGB;
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>datatype<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.PixelDataType.UINT_10F_11F_11F_REV;
+following (don&#x27;t type this out, there&#x27;s an easier way).</p>
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>format<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.PixelDataFormat.RGB;<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>datatype<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.PixelDataType.UINT_10F_11F_11F_REV;<span style="color: #bbbbbb"></span>
 
-<span style="color: #3D7B7B; font-style: italic">// Create a Texture object for the mipmapped cubemap.</span>
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>ibl_package<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.Buffer(Filament.assets[ibl_url]);
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>iblktx<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #A2F; font-weight: bold">new</span><span style="color: #BBB"> </span>Filament.Ktx1Bundle(ibl_package);
+<span style="color: #3D7B7B; font-style: italic">// Create a Texture object for the mipmapped cubemap.</span><span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>ibl_package<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.Buffer(Filament.assets[ibl_url]);<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>iblktx<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #AA22FF; font-weight: bold">new</span><span style="color: #bbbbbb"> </span>Filament.Ktx1Bundle(ibl_package);<span style="color: #bbbbbb"></span>
 
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>ibltex<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.Texture.Builder()
-<span style="color: #BBB">  </span>.width(iblktx.info().pixelWidth)
-<span style="color: #BBB">  </span>.height(iblktx.info().pixelHeight)
-<span style="color: #BBB">  </span>.levels(iblktx.getNumMipLevels())
-<span style="color: #BBB">  </span>.sampler(Filament.Texture$Sampler.SAMPLER_CUBEMAP)
-<span style="color: #BBB">  </span>.format(Filament.Texture$InternalFormat.RGBA8)
-<span style="color: #BBB">  </span>.build(engine);
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>ibltex<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.Texture.Builder()<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.width(iblktx.info().pixelWidth)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.height(iblktx.info().pixelHeight)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.levels(iblktx.getNumMipLevels())<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.sampler(Filament.Texture$Sampler.SAMPLER_CUBEMAP)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.format(Filament.Texture$InternalFormat.RGBA8)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.build(engine);<span style="color: #bbbbbb"></span>
 
-<span style="color: #008000; font-weight: bold">for</span><span style="color: #BBB"> </span>(<span style="color: #008000; font-weight: bold">let</span><span style="color: #BBB"> </span>level<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #666">0</span>;<span style="color: #BBB"> </span>level<span style="color: #BBB"> </span><span style="color: #666">&lt;</span><span style="color: #BBB"> </span>iblktx.getNumMipLevels();<span style="color: #BBB"> </span><span style="color: #666">++</span>level)<span style="color: #BBB"> </span>{
-<span style="color: #BBB">  </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>uint8array<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>iblktx.getCubeBlob(level).getBytes();
-<span style="color: #BBB">  </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>pixelbuffer<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.PixelBuffer(uint8array,<span style="color: #BBB"> </span>format,<span style="color: #BBB"> </span>datatype);
-<span style="color: #BBB">  </span>ibltex.setImageCube(engine,<span style="color: #BBB"> </span>level,<span style="color: #BBB"> </span>pixelbuffer);
-}
+<span style="color: #008000; font-weight: bold">for</span><span style="color: #bbbbbb"> </span>(<span style="color: #008000; font-weight: bold">let</span><span style="color: #bbbbbb"> </span>level<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>;<span style="color: #bbbbbb"> </span>level<span style="color: #bbbbbb"> </span><span style="color: #666666">&lt;</span><span style="color: #bbbbbb"> </span>iblktx.getNumMipLevels();<span style="color: #bbbbbb"> </span><span style="color: #666666">++</span>level)<span style="color: #bbbbbb"> </span>{<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>uint8array<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>iblktx.getCubeBlob(level).getBytes();<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>pixelbuffer<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.PixelBuffer(uint8array,<span style="color: #bbbbbb"> </span>format,<span style="color: #bbbbbb"> </span>datatype);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>ibltex.setImageCube(engine,<span style="color: #bbbbbb"> </span>level,<span style="color: #bbbbbb"> </span>pixelbuffer);<span style="color: #bbbbbb"></span>
+}<span style="color: #bbbbbb"></span>
 
-<span style="color: #3D7B7B; font-style: italic">// Parse the spherical harmonics metadata.</span>
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>shstring<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>iblktx.getMetadata(<span style="color: #BA2121">&#39;sh&#39;</span>);
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>shfloats<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>shstring.split(<span style="color: #A45A77">/\s/</span>,<span style="color: #BBB"> </span><span style="color: #666">9</span><span style="color: #BBB"> </span><span style="color: #666">*</span><span style="color: #BBB"> </span><span style="color: #666">3</span>).map(<span style="color: #008000">parseFloat</span>);
+<span style="color: #3D7B7B; font-style: italic">// Parse the spherical harmonics metadata.</span><span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>shstring<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>iblktx.getMetadata(<span style="color: #BA2121">&#39;sh&#39;</span>);<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>shfloats<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>shstring.split(<span style="color: #A45A77">/\s/</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">9</span><span style="color: #bbbbbb"> </span><span style="color: #666666">*</span><span style="color: #bbbbbb"> </span><span style="color: #666666">3</span>).map(<span style="color: #008000">parseFloat</span>);<span style="color: #bbbbbb"></span>
 
-<span style="color: #3D7B7B; font-style: italic">// Build the IBL object and insert it into the scene.</span>
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>indirectLight<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.IndirectLight.Builder()
-<span style="color: #BBB">  </span>.reflections(ibltex)
-<span style="color: #BBB">  </span>.irradianceSh(<span style="color: #666">3</span>,<span style="color: #BBB"> </span>shfloats)
-<span style="color: #BBB">  </span>.intensity(<span style="color: #666">50000.0</span>)
-<span style="color: #BBB">  </span>.build(engine);
+<span style="color: #3D7B7B; font-style: italic">// Build the IBL object and insert it into the scene.</span><span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>indirectLight<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.IndirectLight.Builder()<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.reflections(ibltex)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.irradianceSh(<span style="color: #666666">3</span>,<span style="color: #bbbbbb"> </span>shfloats)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.intensity(<span style="color: #666666">50000.0</span>)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.build(engine);<span style="color: #bbbbbb"></span>
 
-scene.setIndirectLight(indirectLight);
+scene.setIndirectLight(indirectLight);<span style="color: #bbbbbb"></span>
 </pre></div>
 
 <p>Filament provides a JavaScript utility to make this simpler,
 simply replace the <strong>create IBL</strong> comment with the following snippet.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>indirectLight<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>engine.createIblFromKtx1(ibl_url);
-indirectLight.setIntensity(<span style="color: #666">50000</span>);
-scene.setIndirectLight(indirectLight);
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>indirectLight<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>engine.createIblFromKtx1(ibl_url);<span style="color: #bbbbbb"></span>
+indirectLight.setIntensity(<span style="color: #666666">50000</span>);<span style="color: #bbbbbb"></span>
+scene.setIndirectLight(indirectLight);<span style="color: #bbbbbb"></span>
 </pre></div>
 
 <h2>Add background</h2>
 <p>At this point you can run the demo and you should see a red plastic ball against a black background.
 Without a skybox, the reflections on the ball are not representative of its surroundings.
-Here's one way to create a texture for the skybox:</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>sky_package<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.Buffer(Filament.assets[sky_url]);
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>skyktx<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #A2F; font-weight: bold">new</span><span style="color: #BBB"> </span>Filament.Ktx1Bundle(sky_package);
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>skytex<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.Texture.Builder()
-<span style="color: #BBB">  </span>.width(skyktx.info().pixelWidth)
-<span style="color: #BBB">  </span>.height(skyktx.info().pixelHeight)
-<span style="color: #BBB">  </span>.levels(<span style="color: #666">1</span>)
-<span style="color: #BBB">  </span>.sampler(Filament.Texture$Sampler.SAMPLER_CUBEMAP)
-<span style="color: #BBB">  </span>.format(Filament.Texture$InternalFormat.RGBA8)
-<span style="color: #BBB">  </span>.build(engine);
+Here&#x27;s one way to create a texture for the skybox:</p>
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>sky_package<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.Buffer(Filament.assets[sky_url]);<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>skyktx<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #AA22FF; font-weight: bold">new</span><span style="color: #bbbbbb"> </span>Filament.Ktx1Bundle(sky_package);<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>skytex<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.Texture.Builder()<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.width(skyktx.info().pixelWidth)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.height(skyktx.info().pixelHeight)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.levels(<span style="color: #666666">1</span>)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.sampler(Filament.Texture$Sampler.SAMPLER_CUBEMAP)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.format(Filament.Texture$InternalFormat.RGBA8)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>.build(engine);<span style="color: #bbbbbb"></span>
 
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>uint8array<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>skyktx.getCubeBlob(<span style="color: #666">0</span>).getBytes();
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>pixelbuffer<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.PixelBuffer(uint8array,<span style="color: #BBB"> </span>format,<span style="color: #BBB"> </span>datatype);
-skytex.setImageCube(engine,<span style="color: #BBB"> </span><span style="color: #666">0</span>,<span style="color: #BBB"> </span>pixelbuffer);
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>uint8array<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>skyktx.getCubeBlob(<span style="color: #666666">0</span>).getBytes();<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>pixelbuffer<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.PixelBuffer(uint8array,<span style="color: #bbbbbb"> </span>format,<span style="color: #bbbbbb"> </span>datatype);<span style="color: #bbbbbb"></span>
+skytex.setImageCube(engine,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span>pixelbuffer);<span style="color: #bbbbbb"></span>
 </pre></div>
 
 <p>Filament provides a Javascript utility to make this easier.
 Replace <strong>create skybox</strong> with the following.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>skybox<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>engine.createSkyFromKtx1(sky_url);
-scene.setSkybox(skybox);
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>skybox<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>engine.createSkyFromKtx1(sky_url);<span style="color: #bbbbbb"></span>
+scene.setSkybox(skybox);<span style="color: #bbbbbb"></span>
 </pre></div>
 
-<p>That's it, we now have a shiny red ball floating in an environment! The complete JavaScript file is
+<p>That&#x27;s it, we now have a shiny red ball floating in an environment! The complete JavaScript file is
 available <a href="tutorial_redball.js">here</a>.</p>
-<p>In the <a href="tutorial_suzanne.html">next tutorial</a>, we'll take a closer look at textures and interaction.</p>
+<p>In the <a href="tutorial_suzanne.html">next tutorial</a>, we&#x27;ll take a closer look at textures and interaction.</p>
 
 </body>
 </html>

docs/webgl/tutorial_suzanne.html

@@ -8,58 +8,58 @@
 <div class="demo_frame"><iframe src="demo_suzanne.html"></iframe><a href="demo_suzanne.html">&#x1F517;</a></div>
 <p>This tutorial will describe how to create the <strong>suzanne</strong> demo, introducing you to compressed
 textures, mipmap generation, asynchronous texture loading, and trackball rotation.</p>
-<p>Much like the <a href="tutorial_redball.html">previous tutorial</a>, you'll need to use the command-line tools that can be found in
+<p>Much like the <a href="tutorial_redball.html">previous tutorial</a>, you&#x27;ll need to use the command-line tools that can be found in
 the appropriate <a href="//github.com/google/filament/releases">Filament release</a> for your development machine. In addition to <code>matc</code> and <code>cmgen</code>,
-we'll also be using <code>filamesh</code> and <code>mipgen</code>.</p>
+we&#x27;ll also be using <code>filamesh</code> and <code>mipgen</code>.</p>
 <h2>Create filamesh file</h2>
 <p>Filament does not have an asset loading system, but it does provide a binary mesh format
-called <code>filamesh</code> for simple use cases. Let's create a compressed filamesh file for suzanne by
+called <code>filamesh</code> for simple use cases. Let&#x27;s create a compressed filamesh file for suzanne by
 converting <a href="https://github.com/google/filament/blob/main/assets/models/monkey/monkey.obj">this OBJ file</a>:</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span>filamesh<span style="color: #BBB"> </span>--compress<span style="color: #BBB"> </span>monkey.obj<span style="color: #BBB"> </span>suzanne.filamesh
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span>filamesh --compress monkey.obj suzanne.filamesh
 </pre></div>
 
 <h2>Create mipmapped textures</h2>
-<p>Next, let's create mipmapped KTX files using filament's <code>mipgen</code> tool. We'll create compressed and
+<p>Next, let&#x27;s create mipmapped KTX files using filament&#x27;s <code>mipgen</code> tool. We&#x27;ll create compressed and
 non-compressed variants for each texture, since not all platforms support the same compression
 formats. First copy over the PNG files from the <a href="https://github.com/google/filament/blob/main/assets/models/monkey">monkey folder</a>, then do:</p>
 <div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #3D7B7B; font-style: italic"># Create mipmaps for base color</span>
-mipgen<span style="color: #BBB"> </span>albedo.png<span style="color: #BBB"> </span>albedo.ktx2
-mipgen<span style="color: #BBB"> </span>--compression<span style="color: #666">=</span>uastc<span style="color: #BBB"> </span>albedo.png<span style="color: #BBB"> </span>albedo.ktx2
+mipgen albedo.png albedo.ktx2
+mipgen --compression<span style="color: #666666">=</span>uastc albedo.png albedo.ktx2
 
 <span style="color: #3D7B7B; font-style: italic"># Create mipmaps for the normal map and a compressed variant.</span>
-mipgen<span style="color: #BBB"> </span>--strip-alpha<span style="color: #BBB"> </span>--kernel<span style="color: #666">=</span>NORMALS<span style="color: #BBB"> </span>--linear<span style="color: #BBB"> </span>normal.png<span style="color: #BBB"> </span>normal.ktx
-mipgen<span style="color: #BBB"> </span>--strip-alpha<span style="color: #BBB"> </span>--kernel<span style="color: #666">=</span>NORMALS<span style="color: #BBB"> </span>--linear<span style="color: #BBB"> </span>--compression<span style="color: #666">=</span>uastc_normals<span style="color: #BBB"> </span><span style="color: #AA5D1F; font-weight: bold">\</span>
-<span style="color: #BBB">    </span>normal.png<span style="color: #BBB"> </span>normal.ktx2
+mipgen --strip-alpha --kernel<span style="color: #666666">=</span>NORMALS --linear normal.png normal.ktx
+mipgen --strip-alpha --kernel<span style="color: #666666">=</span>NORMALS --linear --compression<span style="color: #666666">=</span>uastc_normals <span style="color: #AA5D1F; font-weight: bold">\</span>
+    normal.png normal.ktx2
 
 <span style="color: #3D7B7B; font-style: italic"># Create mipmaps for the single-component roughness map and a compressed variant.</span>
-mipgen<span style="color: #BBB"> </span>--grayscale<span style="color: #BBB"> </span>roughness.png<span style="color: #BBB"> </span>roughness.ktx
-mipgen<span style="color: #BBB"> </span>--grayscale<span style="color: #BBB"> </span>--compression<span style="color: #666">=</span>uastc<span style="color: #BBB"> </span>roughness.png<span style="color: #BBB"> </span>roughness.ktx2
+mipgen --grayscale roughness.png roughness.ktx
+mipgen --grayscale --compression<span style="color: #666666">=</span>uastc roughness.png roughness.ktx2
 
 <span style="color: #3D7B7B; font-style: italic"># Create mipmaps for the single-component metallic map and a compressed variant.</span>
-mipgen<span style="color: #BBB"> </span>--grayscale<span style="color: #BBB"> </span>metallic.png<span style="color: #BBB"> </span>metallic.ktx
-mipgen<span style="color: #BBB"> </span>--grayscale<span style="color: #BBB"> </span>--compression<span style="color: #666">=</span>uastc<span style="color: #BBB"> </span>metallic.png<span style="color: #BBB"> </span>metallic.ktx2
+mipgen --grayscale metallic.png metallic.ktx
+mipgen --grayscale --compression<span style="color: #666666">=</span>uastc metallic.png metallic.ktx2
 
 <span style="color: #3D7B7B; font-style: italic"># Create mipmaps for the single-component occlusion map and a compressed variant.</span>
-mipgen<span style="color: #BBB"> </span>--grayscale<span style="color: #BBB"> </span>ao.png<span style="color: #BBB"> </span>ao.ktx
-mipgen<span style="color: #BBB"> </span>--grayscale<span style="color: #BBB"> </span>--compression<span style="color: #666">=</span>uastc<span style="color: #BBB"> </span>ao.png<span style="color: #BBB"> </span>ao.ktx2
+mipgen --grayscale ao.png ao.ktx
+mipgen --grayscale --compression<span style="color: #666666">=</span>uastc ao.png ao.ktx2
 </pre></div>
 
-<p>For more information on mipgen's arguments and supported formats, do <code>mipgen --help</code>.</p>
-<p>In a production setting, you'd want to invoke these commands with a script or build system.</p>
+<p>For more information on mipgen&#x27;s arguments and supported formats, do <code>mipgen --help</code>.</p>
+<p>In a production setting, you&#x27;d want to invoke these commands with a script or build system.</p>
 <h2>Bake environment map</h2>
-<p>Much like the <a href="tutorial_redball.html">previous tutorial</a> we need to use Filament's <code>cmgen</code> tool to produce cubemap files.</p>
+<p>Much like the <a href="tutorial_redball.html">previous tutorial</a> we need to use Filament&#x27;s <code>cmgen</code> tool to produce cubemap files.</p>
 <p>Download <a href="//github.com/google/filament/blob/main/third_party/environments/venetian_crossroads_2k.hdr">venetian_crossroads_2k.hdr</a>, then invoke the following commands in your terminal.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span>cmgen<span style="color: #BBB"> </span>-x<span style="color: #BBB"> </span>.<span style="color: #BBB"> </span>--format<span style="color: #666">=</span>ktx<span style="color: #BBB"> </span>--size<span style="color: #666">=64</span><span style="color: #BBB"> </span>--extract-blur<span style="color: #666">=0</span>.1<span style="color: #BBB"> </span>venetian_crossroads_2k.hdr
-<span style="color: #008000">cd</span><span style="color: #BBB"> </span>venetian*<span style="color: #BBB"> </span>;<span style="color: #BBB"> </span>mv<span style="color: #BBB"> </span>venetian*_ibl.ktx<span style="color: #BBB"> </span>venetian_crossroads_2k_skybox_tiny.ktx<span style="color: #BBB"> </span>;<span style="color: #BBB"> </span><span style="color: #008000">cd</span><span style="color: #BBB"> </span>-
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span>cmgen -x . --format<span style="color: #666666">=</span>ktx --size<span style="color: #666666">=64</span> --extract-blur<span style="color: #666666">=0</span>.1 venetian_crossroads_2k.hdr
+<span style="color: #008000">cd</span> venetian* ; mv venetian*_ibl.ktx venetian_crossroads_2k_skybox_tiny.ktx ; <span style="color: #008000">cd</span> -
 
-cmgen<span style="color: #BBB"> </span>-x<span style="color: #BBB"> </span>.<span style="color: #BBB"> </span>--format<span style="color: #666">=</span>ktx<span style="color: #BBB"> </span>--size<span style="color: #666">=256</span><span style="color: #BBB"> </span>--extract-blur<span style="color: #666">=0</span>.1<span style="color: #BBB"> </span>venetian_crossroads_2k.hdr
-cmgen<span style="color: #BBB"> </span>-x<span style="color: #BBB"> </span>.<span style="color: #BBB"> </span>--format<span style="color: #666">=</span>ktx<span style="color: #BBB"> </span>--size<span style="color: #666">=256</span><span style="color: #BBB"> </span>--extract-blur<span style="color: #666">=0</span>.1<span style="color: #BBB"> </span>venetian_crossroads_2k.hdr
-cmgen<span style="color: #BBB"> </span>-x<span style="color: #BBB"> </span>.<span style="color: #BBB"> </span>--format<span style="color: #666">=</span>ktx<span style="color: #BBB"> </span>--size<span style="color: #666">=256</span><span style="color: #BBB"> </span>--extract-blur<span style="color: #666">=0</span>.1<span style="color: #BBB"> </span>venetian_crossroads_2k.hdr
+cmgen -x . --format<span style="color: #666666">=</span>ktx --size<span style="color: #666666">=256</span> --extract-blur<span style="color: #666666">=0</span>.1 venetian_crossroads_2k.hdr
+cmgen -x . --format<span style="color: #666666">=</span>ktx --size<span style="color: #666666">=256</span> --extract-blur<span style="color: #666666">=0</span>.1 venetian_crossroads_2k.hdr
+cmgen -x . --format<span style="color: #666666">=</span>ktx --size<span style="color: #666666">=256</span> --extract-blur<span style="color: #666666">=0</span>.1 venetian_crossroads_2k.hdr
 </pre></div>
 
 <h2>Define textured material</h2>
 <p>You might recall the <code>filamat</code> file we generated in the previous tutorial for red plastic. For this
-demo, we'll create a material that uses textures for several parameters.</p>
+demo, we&#x27;ll create a material that uses textures for several parameters.</p>
 <p>Create the following text file and call it <code>textured.mat</code>. Note that our material definition now
 requires a <code>uv0</code> attribute.</p>
 <div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span>material {
@@ -90,7 +90,7 @@ fragment {
 </pre></div>
 
 <p>Next, invoke <code>matc</code> as follows.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span>matc<span style="color: #BBB"> </span>-a<span style="color: #BBB"> </span>opengl<span style="color: #BBB"> </span>-p<span style="color: #BBB"> </span>mobile<span style="color: #BBB"> </span>-o<span style="color: #BBB"> </span>textured.filamat<span style="color: #BBB"> </span>textured.mat
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span>matc -a opengl -p mobile -o textured.filamat textured.mat
 </pre></div>
 
 <p>You should now have a material archive in your working directory. For the suzanne asset, the normal
@@ -100,65 +100,65 @@ materials, consult the official document describing the <a href="https://google.
 <p>Create a text file called <code>suzanne.html</code> and copy over the HTML that we used in the <a href="tutorial_redball.html">previous
 tutorial</a>. Change the last script tag from <code>redball.js</code> to <code>suzanne.js</code>. Next, create <code>suzanne.js</code>
 with the following content.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #3D7B7B; font-style: italic">// TODO: declare asset URLs</span>
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #3D7B7B; font-style: italic">// TODO: declare asset URLs</span><span style="color: #bbbbbb"></span>
 
-Filament.init([<span style="color: #BBB"> </span>filamat_url,<span style="color: #BBB"> </span>filamesh_url,<span style="color: #BBB"> </span>sky_small_url,<span style="color: #BBB"> </span>ibl_url<span style="color: #BBB"> </span>],<span style="color: #BBB"> </span>()<span style="color: #BBB"> </span>=&gt;<span style="color: #BBB"> </span>{
-<span style="color: #BBB">    </span><span style="color: #008000">window</span>.app<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #A2F; font-weight: bold">new</span><span style="color: #BBB"> </span>App(<span style="color: #008000">document</span>.getElementsByTagName(<span style="color: #BA2121">&#39;canvas&#39;</span>)[<span style="color: #666">0</span>]);
-});
+Filament.init([<span style="color: #bbbbbb"> </span>filamat_url,<span style="color: #bbbbbb"> </span>filamesh_url,<span style="color: #bbbbbb"> </span>sky_small_url,<span style="color: #bbbbbb"> </span>ibl_url<span style="color: #bbbbbb"> </span>],<span style="color: #bbbbbb"> </span>()<span style="color: #bbbbbb"> </span>=&gt;<span style="color: #bbbbbb"> </span>{<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000">window</span>.app<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #AA22FF; font-weight: bold">new</span><span style="color: #bbbbbb"> </span>App(<span style="color: #008000">document</span>.getElementsByTagName(<span style="color: #BA2121">&#39;canvas&#39;</span>)[<span style="color: #666666">0</span>]);<span style="color: #bbbbbb"></span>
+});<span style="color: #bbbbbb"></span>
 
-<span style="color: #008000; font-weight: bold">class</span><span style="color: #BBB"> </span>App<span style="color: #BBB"> </span>{
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">constructor</span>(canvas)<span style="color: #BBB"> </span>{
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">this</span>.canvas<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>canvas;
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">this</span>.engine<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.Engine.create(canvas);
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">this</span>.scene<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createScene();
+<span style="color: #008000; font-weight: bold">class</span><span style="color: #bbbbbb"> </span>App<span style="color: #bbbbbb"> </span>{<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">constructor</span>(canvas)<span style="color: #bbbbbb"> </span>{<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">this</span>.canvas<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>canvas;<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">this</span>.engine<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.Engine.create(canvas);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">this</span>.scene<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createScene();<span style="color: #bbbbbb"></span>
 
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>material<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createMaterial(filamat_url);
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">this</span>.matinstance<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>material.createInstance();
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>material<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createMaterial(filamat_url);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">this</span>.matinstance<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>material.createInstance();<span style="color: #bbbbbb"></span>
 
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>filamesh<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.loadFilamesh(filamesh_url,<span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.matinstance);
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">this</span>.suzanne<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>filamesh.renderable;
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>filamesh<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.loadFilamesh(filamesh_url,<span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.matinstance);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">this</span>.suzanne<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>filamesh.renderable;<span style="color: #bbbbbb"></span>
 
-<span style="color: #BBB">        </span><span style="color: #3D7B7B; font-style: italic">// TODO: create sky box and IBL</span>
-<span style="color: #BBB">        </span><span style="color: #3D7B7B; font-style: italic">// TODO: initialize gltumble</span>
-<span style="color: #BBB">        </span><span style="color: #3D7B7B; font-style: italic">// TODO: fetch larger assets</span>
+<span style="color: #bbbbbb">        </span><span style="color: #3D7B7B; font-style: italic">// TODO: create sky box and IBL</span><span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #3D7B7B; font-style: italic">// TODO: initialize gltumble</span><span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #3D7B7B; font-style: italic">// TODO: fetch larger assets</span><span style="color: #bbbbbb"></span>
 
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">this</span>.swapChain<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createSwapChain();
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">this</span>.renderer<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createRenderer();
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">this</span>.camera<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createCamera(Filament.EntityManager.get().create());
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">this</span>.view<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createView();
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">this</span>.view.setCamera(<span style="color: #008000; font-weight: bold">this</span>.camera);
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">this</span>.view.setScene(<span style="color: #008000; font-weight: bold">this</span>.scene);
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">this</span>.render<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.render.bind(<span style="color: #008000; font-weight: bold">this</span>);
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">this</span>.resize<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.resize.bind(<span style="color: #008000; font-weight: bold">this</span>);
-<span style="color: #BBB">        </span><span style="color: #008000">window</span>.addEventListener(<span style="color: #BA2121">&#39;resize&#39;</span>,<span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.resize);
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">this</span>.swapChain<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createSwapChain();<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">this</span>.renderer<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createRenderer();<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">this</span>.camera<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createCamera(Filament.EntityManager.get().create());<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">this</span>.view<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createView();<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">this</span>.view.setCamera(<span style="color: #008000; font-weight: bold">this</span>.camera);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">this</span>.view.setScene(<span style="color: #008000; font-weight: bold">this</span>.scene);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">this</span>.render<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.render.bind(<span style="color: #008000; font-weight: bold">this</span>);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">this</span>.resize<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.resize.bind(<span style="color: #008000; font-weight: bold">this</span>);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000">window</span>.addEventListener(<span style="color: #BA2121">&#39;resize&#39;</span>,<span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.resize);<span style="color: #bbbbbb"></span>
 
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>eye<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>[<span style="color: #666">0</span>,<span style="color: #BBB"> </span><span style="color: #666">0</span>,<span style="color: #BBB"> </span><span style="color: #666">4</span>],<span style="color: #BBB"> </span>center<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>[<span style="color: #666">0</span>,<span style="color: #BBB"> </span><span style="color: #666">0</span>,<span style="color: #BBB"> </span><span style="color: #666">0</span>],<span style="color: #BBB"> </span>up<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>[<span style="color: #666">0</span>,<span style="color: #BBB"> </span><span style="color: #666">1</span>,<span style="color: #BBB"> </span><span style="color: #666">0</span>];
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">this</span>.camera.lookAt(eye,<span style="color: #BBB"> </span>center,<span style="color: #BBB"> </span>up);
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>eye<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>[<span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">4</span>],<span style="color: #bbbbbb"> </span>center<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>[<span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>],<span style="color: #bbbbbb"> </span>up<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>[<span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">1</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>];<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">this</span>.camera.lookAt(eye,<span style="color: #bbbbbb"> </span>center,<span style="color: #bbbbbb"> </span>up);<span style="color: #bbbbbb"></span>
 
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">this</span>.resize();
-<span style="color: #BBB">        </span><span style="color: #008000">window</span>.requestAnimationFrame(<span style="color: #008000; font-weight: bold">this</span>.render);
-<span style="color: #BBB">    </span>}
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">this</span>.resize();<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000">window</span>.requestAnimationFrame(<span style="color: #008000; font-weight: bold">this</span>.render);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span>}<span style="color: #bbbbbb"></span>
 
-<span style="color: #BBB">    </span>render()<span style="color: #BBB"> </span>{
-<span style="color: #BBB">        </span><span style="color: #3D7B7B; font-style: italic">// TODO: apply gltumble matrix</span>
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">this</span>.renderer.render(<span style="color: #008000; font-weight: bold">this</span>.swapChain,<span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.view);
-<span style="color: #BBB">        </span><span style="color: #008000">window</span>.requestAnimationFrame(<span style="color: #008000; font-weight: bold">this</span>.render);
-<span style="color: #BBB">    </span>}
+<span style="color: #bbbbbb">    </span>render()<span style="color: #bbbbbb"> </span>{<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #3D7B7B; font-style: italic">// TODO: apply gltumble matrix</span><span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">this</span>.renderer.render(<span style="color: #008000; font-weight: bold">this</span>.swapChain,<span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.view);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000">window</span>.requestAnimationFrame(<span style="color: #008000; font-weight: bold">this</span>.render);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span>}<span style="color: #bbbbbb"></span>
 
-<span style="color: #BBB">    </span>resize()<span style="color: #BBB"> </span>{
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>dpr<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000">window</span>.devicePixelRatio;
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>width<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.canvas.width<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000">window</span>.innerWidth<span style="color: #BBB"> </span><span style="color: #666">*</span><span style="color: #BBB"> </span>dpr;
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>height<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.canvas.height<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000">window</span>.innerHeight<span style="color: #BBB"> </span><span style="color: #666">*</span><span style="color: #BBB"> </span>dpr;
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">this</span>.view.setViewport([<span style="color: #666">0</span>,<span style="color: #BBB"> </span><span style="color: #666">0</span>,<span style="color: #BBB"> </span>width,<span style="color: #BBB"> </span>height]);
+<span style="color: #bbbbbb">    </span>resize()<span style="color: #bbbbbb"> </span>{<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>dpr<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000">window</span>.devicePixelRatio;<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>width<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.canvas.width<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000">window</span>.innerWidth<span style="color: #bbbbbb"> </span><span style="color: #666666">*</span><span style="color: #bbbbbb"> </span>dpr;<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>height<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.canvas.height<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000">window</span>.innerHeight<span style="color: #bbbbbb"> </span><span style="color: #666666">*</span><span style="color: #bbbbbb"> </span>dpr;<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">this</span>.view.setViewport([<span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span>width,<span style="color: #bbbbbb"> </span>height]);<span style="color: #bbbbbb"></span>
 
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>aspect<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>width<span style="color: #BBB"> </span><span style="color: #666">/</span><span style="color: #BBB"> </span>height;
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>Fov<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.Camera$Fov,<span style="color: #BBB"> </span>fov<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>aspect<span style="color: #BBB"> </span><span style="color: #666">&lt;</span><span style="color: #BBB"> </span><span style="color: #666">1</span><span style="color: #BBB"> </span><span style="color: #666">?</span><span style="color: #BBB"> </span>Fov.HORIZONTAL<span style="color: #BBB"> </span><span style="color: #666">:</span><span style="color: #BBB"> </span>Fov.VERTICAL;
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">this</span>.camera.setProjectionFov(<span style="color: #666">45</span>,<span style="color: #BBB"> </span>aspect,<span style="color: #BBB"> </span><span style="color: #666">1.0</span>,<span style="color: #BBB"> </span><span style="color: #666">10.0</span>,<span style="color: #BBB"> </span>fov);
-<span style="color: #BBB">    </span>}
-}
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>aspect<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>width<span style="color: #bbbbbb"> </span><span style="color: #666666">/</span><span style="color: #bbbbbb"> </span>height;<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>Fov<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.Camera$Fov,<span style="color: #bbbbbb"> </span>fov<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>aspect<span style="color: #bbbbbb"> </span><span style="color: #666666">&lt;</span><span style="color: #bbbbbb"> </span><span style="color: #666666">1</span><span style="color: #bbbbbb"> </span><span style="color: #666666">?</span><span style="color: #bbbbbb"> </span>Fov.HORIZONTAL<span style="color: #bbbbbb"> </span><span style="color: #666666">:</span><span style="color: #bbbbbb"> </span>Fov.VERTICAL;<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">this</span>.camera.setProjectionFov(<span style="color: #666666">45</span>,<span style="color: #bbbbbb"> </span>aspect,<span style="color: #bbbbbb"> </span><span style="color: #666666">1.0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">10.0</span>,<span style="color: #bbbbbb"> </span>fov);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span>}<span style="color: #bbbbbb"></span>
+}<span style="color: #bbbbbb"></span>
 </pre></div>
 
-<p>Our app will only require a subset of assets to be present for <code>App</code> construction. We'll download
+<p>Our app will only require a subset of assets to be present for <code>App</code> construction. We&#x27;ll download
 the other assets after construction. By using a progressive loading strategy, we can reduce the
 perceived load time.</p>
 <p>Next we need to supply the URLs for various assets. This is actually a bit tricky, because different
@@ -171,85 +171,85 @@ string -- which might be empty.</p>
 <p>In our case, we know that our web server will have <code>astc</code> and <code>s3tc</code> variants for albedo, and <code>etc</code>
 variants for the other textures. The uncompressed variants (empty string) are always available as a
 last resort. Go ahead and replace the <strong>declare asset URLs</strong> comment with the following snippet.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>albedo_suffix<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.getSupportedFormatSuffix(<span style="color: #BA2121">&#39;astc s3tc_srgb&#39;</span>);
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>texture_suffix<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.getSupportedFormatSuffix(<span style="color: #BA2121">&#39;etc&#39;</span>);
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>albedo_suffix<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.getSupportedFormatSuffix(<span style="color: #BA2121">&#39;astc s3tc_srgb&#39;</span>);<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>texture_suffix<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.getSupportedFormatSuffix(<span style="color: #BA2121">&#39;etc&#39;</span>);<span style="color: #bbbbbb"></span>
 
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>environ<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #BA2121">&#39;venetian_crossroads_2k&#39;</span>
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>ibl_url<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #BA2121">`</span><span style="color: #A45A77; font-weight: bold">${</span>environ<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">/</span><span style="color: #A45A77; font-weight: bold">${</span>environ<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">_ibl.ktx`</span>;
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>sky_small_url<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #BA2121">`</span><span style="color: #A45A77; font-weight: bold">${</span>environ<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">/</span><span style="color: #A45A77; font-weight: bold">${</span>environ<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">_skybox_tiny.ktx`</span>;
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>sky_large_url<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #BA2121">`</span><span style="color: #A45A77; font-weight: bold">${</span>environ<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">/</span><span style="color: #A45A77; font-weight: bold">${</span>environ<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">_skybox.ktx`</span>;
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>albedo_url<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #BA2121">`albedo</span><span style="color: #A45A77; font-weight: bold">${</span>albedo_suffix<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">.ktx`</span>;
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>ao_url<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #BA2121">`ao</span><span style="color: #A45A77; font-weight: bold">${</span>texture_suffix<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">.ktx`</span>;
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>metallic_url<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #BA2121">`metallic</span><span style="color: #A45A77; font-weight: bold">${</span>texture_suffix<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">.ktx`</span>;
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>normal_url<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #BA2121">`normal</span><span style="color: #A45A77; font-weight: bold">${</span>texture_suffix<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">.ktx`</span>;
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>roughness_url<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #BA2121">`roughness</span><span style="color: #A45A77; font-weight: bold">${</span>texture_suffix<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">.ktx`</span>;
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>filamat_url<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #BA2121">&#39;textured.filamat&#39;</span>;
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>filamesh_url<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #BA2121">&#39;suzanne.filamesh&#39;</span>;
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>environ<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #BA2121">&#39;venetian_crossroads_2k&#39;</span><span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>ibl_url<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #BA2121">`</span><span style="color: #A45A77; font-weight: bold">${</span>environ<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">/</span><span style="color: #A45A77; font-weight: bold">${</span>environ<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">_ibl.ktx`</span>;<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>sky_small_url<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #BA2121">`</span><span style="color: #A45A77; font-weight: bold">${</span>environ<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">/</span><span style="color: #A45A77; font-weight: bold">${</span>environ<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">_skybox_tiny.ktx`</span>;<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>sky_large_url<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #BA2121">`</span><span style="color: #A45A77; font-weight: bold">${</span>environ<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">/</span><span style="color: #A45A77; font-weight: bold">${</span>environ<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">_skybox.ktx`</span>;<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>albedo_url<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #BA2121">`albedo</span><span style="color: #A45A77; font-weight: bold">${</span>albedo_suffix<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">.ktx`</span>;<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>ao_url<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #BA2121">`ao</span><span style="color: #A45A77; font-weight: bold">${</span>texture_suffix<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">.ktx`</span>;<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>metallic_url<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #BA2121">`metallic</span><span style="color: #A45A77; font-weight: bold">${</span>texture_suffix<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">.ktx`</span>;<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>normal_url<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #BA2121">`normal</span><span style="color: #A45A77; font-weight: bold">${</span>texture_suffix<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">.ktx`</span>;<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>roughness_url<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #BA2121">`roughness</span><span style="color: #A45A77; font-weight: bold">${</span>texture_suffix<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">.ktx`</span>;<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>filamat_url<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #BA2121">&#39;textured.filamat&#39;</span>;<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>filamesh_url<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #BA2121">&#39;suzanne.filamesh&#39;</span>;<span style="color: #bbbbbb"></span>
 </pre></div>
 
 <h2>Create skybox and IBL</h2>
-<p>Next, let's create the low-resolution skybox and IBL in the <code>App</code> constructor.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">this</span>.skybox<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createSkyFromKtx1(sky_small_url);
-<span style="color: #008000; font-weight: bold">this</span>.scene.setSkybox(<span style="color: #008000; font-weight: bold">this</span>.skybox);
-<span style="color: #008000; font-weight: bold">this</span>.indirectLight<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createIblFromKtx1(ibl_url);
-<span style="color: #008000; font-weight: bold">this</span>.indirectLight.setIntensity(<span style="color: #666">100000</span>);
-<span style="color: #008000; font-weight: bold">this</span>.scene.setIndirectLight(<span style="color: #008000; font-weight: bold">this</span>.indirectLight);
+<p>Next, let&#x27;s create the low-resolution skybox and IBL in the <code>App</code> constructor.</p>
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">this</span>.skybox<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createSkyFromKtx1(sky_small_url);<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">this</span>.scene.setSkybox(<span style="color: #008000; font-weight: bold">this</span>.skybox);<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">this</span>.indirectLight<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createIblFromKtx1(ibl_url);<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">this</span>.indirectLight.setIntensity(<span style="color: #666666">100000</span>);<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">this</span>.scene.setIndirectLight(<span style="color: #008000; font-weight: bold">this</span>.indirectLight);<span style="color: #bbbbbb"></span>
 </pre></div>
 
 <p>This allows users to see a reasonable background fairly quickly, before larger assets have finished
 loading in.</p>
 <h2>Fetch assets asychronously</h2>
-<p>Next we'll invoke the <code>Filament.fetch</code> function from within the app constructor. This function is
+<p>Next we&#x27;ll invoke the <code>Filament.fetch</code> function from within the app constructor. This function is
 very similar to <code>Filament.init</code>. It takes a list of asset URLs and a callback function that triggers
 when the assets have finished downloading.</p>
-<p>In our callback, we'll make several <code>setTextureParameter</code> calls on the material instance, then we'll
+<p>In our callback, we&#x27;ll make several <code>setTextureParameter</code> calls on the material instance, then we&#x27;ll
 recreate the skybox using a higher-resolution texture. As a last step we unhide the renderable that
 was created in the app constructor.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span>Filament.fetch([sky_large_url,<span style="color: #BBB"> </span>albedo_url,<span style="color: #BBB"> </span>roughness_url,<span style="color: #BBB"> </span>metallic_url,<span style="color: #BBB"> </span>normal_url,<span style="color: #BBB"> </span>ao_url],<span style="color: #BBB"> </span>()<span style="color: #BBB"> </span>=&gt;<span style="color: #BBB"> </span>{
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>albedo<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createTextureFromKtx2(albedo_url,<span style="color: #BBB"> </span>{srgb<span style="color: #666">:</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">true</span>});
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>roughness<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createTextureFromKtx2(roughness_url);
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>metallic<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createTextureFromKtx2(metallic_url);
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>normal<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createTextureFromKtx2(normal_url);
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>ao<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createTextureFromKtx2(ao_url);
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span>Filament.fetch([sky_large_url,<span style="color: #bbbbbb"> </span>albedo_url,<span style="color: #bbbbbb"> </span>roughness_url,<span style="color: #bbbbbb"> </span>metallic_url,<span style="color: #bbbbbb"> </span>normal_url,<span style="color: #bbbbbb"> </span>ao_url],<span style="color: #bbbbbb"> </span>()<span style="color: #bbbbbb"> </span>=&gt;<span style="color: #bbbbbb"> </span>{<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>albedo<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createTextureFromKtx2(albedo_url,<span style="color: #bbbbbb"> </span>{srgb<span style="color: #666666">:</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">true</span>});<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>roughness<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createTextureFromKtx2(roughness_url);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>metallic<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createTextureFromKtx2(metallic_url);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>normal<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createTextureFromKtx2(normal_url);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>ao<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createTextureFromKtx2(ao_url);<span style="color: #bbbbbb"></span>
 
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>sampler<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #A2F; font-weight: bold">new</span><span style="color: #BBB"> </span>Filament.TextureSampler(
-<span style="color: #BBB">        </span>Filament.MinFilter.LINEAR_MIPMAP_LINEAR,
-<span style="color: #BBB">        </span>Filament.MagFilter.LINEAR,
-<span style="color: #BBB">        </span>Filament.WrapMode.CLAMP_TO_EDGE);
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>sampler<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #AA22FF; font-weight: bold">new</span><span style="color: #bbbbbb"> </span>Filament.TextureSampler(<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span>Filament.MinFilter.LINEAR_MIPMAP_LINEAR,<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span>Filament.MagFilter.LINEAR,<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span>Filament.WrapMode.CLAMP_TO_EDGE);<span style="color: #bbbbbb"></span>
 
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.matinstance.setTextureParameter(<span style="color: #BA2121">&#39;albedo&#39;</span>,<span style="color: #BBB"> </span>albedo,<span style="color: #BBB"> </span>sampler);
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.matinstance.setTextureParameter(<span style="color: #BA2121">&#39;roughness&#39;</span>,<span style="color: #BBB"> </span>roughness,<span style="color: #BBB"> </span>sampler);
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.matinstance.setTextureParameter(<span style="color: #BA2121">&#39;metallic&#39;</span>,<span style="color: #BBB"> </span>metallic,<span style="color: #BBB"> </span>sampler);
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.matinstance.setTextureParameter(<span style="color: #BA2121">&#39;normal&#39;</span>,<span style="color: #BBB"> </span>normal,<span style="color: #BBB"> </span>sampler);
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.matinstance.setTextureParameter(<span style="color: #BA2121">&#39;ao&#39;</span>,<span style="color: #BBB"> </span>ao,<span style="color: #BBB"> </span>sampler);
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.matinstance.setTextureParameter(<span style="color: #BA2121">&#39;albedo&#39;</span>,<span style="color: #bbbbbb"> </span>albedo,<span style="color: #bbbbbb"> </span>sampler);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.matinstance.setTextureParameter(<span style="color: #BA2121">&#39;roughness&#39;</span>,<span style="color: #bbbbbb"> </span>roughness,<span style="color: #bbbbbb"> </span>sampler);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.matinstance.setTextureParameter(<span style="color: #BA2121">&#39;metallic&#39;</span>,<span style="color: #bbbbbb"> </span>metallic,<span style="color: #bbbbbb"> </span>sampler);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.matinstance.setTextureParameter(<span style="color: #BA2121">&#39;normal&#39;</span>,<span style="color: #bbbbbb"> </span>normal,<span style="color: #bbbbbb"> </span>sampler);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.matinstance.setTextureParameter(<span style="color: #BA2121">&#39;ao&#39;</span>,<span style="color: #bbbbbb"> </span>ao,<span style="color: #bbbbbb"> </span>sampler);<span style="color: #bbbbbb"></span>
 
-<span style="color: #BBB">    </span><span style="color: #3D7B7B; font-style: italic">// Replace low-res skybox with high-res skybox.</span>
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.engine.destroySkybox(<span style="color: #008000; font-weight: bold">this</span>.skybox);
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.skybox<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createSkyFromKtx1(sky_large_url);
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.scene.setSkybox(<span style="color: #008000; font-weight: bold">this</span>.skybox);
+<span style="color: #bbbbbb">    </span><span style="color: #3D7B7B; font-style: italic">// Replace low-res skybox with high-res skybox.</span><span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.engine.destroySkybox(<span style="color: #008000; font-weight: bold">this</span>.skybox);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.skybox<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.createSkyFromKtx1(sky_large_url);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.scene.setSkybox(<span style="color: #008000; font-weight: bold">this</span>.skybox);<span style="color: #bbbbbb"></span>
 
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.scene.addEntity(<span style="color: #008000; font-weight: bold">this</span>.suzanne);
-});
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.scene.addEntity(<span style="color: #008000; font-weight: bold">this</span>.suzanne);<span style="color: #bbbbbb"></span>
+});<span style="color: #bbbbbb"></span>
 </pre></div>
 
 <h2>Introduce trackball rotation</h2>
 <p>Add the following script tag to your HTML file. This imports a small third-party library that
 listens for drag events and computes a rotation matrix.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span>&lt;<span style="color: #008000; font-weight: bold">script</span> <span style="color: #687822">src</span><span style="color: #666">=</span><span style="color: #BA2121">&quot;//unpkg.com/gltumble&quot;</span>&gt;&lt;/<span style="color: #008000; font-weight: bold">script</span>&gt;
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span>&lt;<span style="color: #008000; font-weight: bold">script</span> <span style="color: #687822">src</span><span style="color: #666666">=</span><span style="color: #BA2121">&quot;//unpkg.com/gltumble&quot;</span>&gt;&lt;/<span style="color: #008000; font-weight: bold">script</span>&gt;
 </pre></div>
 
 <p>Next, replace the <strong>initialize gltumble</strong> and <strong>apply gltumble matrix</strong> comments with the following
 two code snippets.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">this</span>.trackball<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #A2F; font-weight: bold">new</span><span style="color: #BBB"> </span>Trackball(canvas,<span style="color: #BBB"> </span>{startSpin<span style="color: #666">:</span><span style="color: #BBB"> </span><span style="color: #666">0.035</span>});
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">this</span>.trackball<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #AA22FF; font-weight: bold">new</span><span style="color: #bbbbbb"> </span>Trackball(canvas,<span style="color: #bbbbbb"> </span>{startSpin<span style="color: #666666">:</span><span style="color: #bbbbbb"> </span><span style="color: #666666">0.035</span>});<span style="color: #bbbbbb"></span>
 </pre></div>
 
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>tcm<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.getTransformManager();
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>inst<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>tcm.getInstance(<span style="color: #008000; font-weight: bold">this</span>.suzanne);
-tcm.setTransform(inst,<span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.trackball.getMatrix());
-inst.<span style="color: #A2F; font-weight: bold">delete</span>();
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>tcm<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.getTransformManager();<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>inst<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>tcm.getInstance(<span style="color: #008000; font-weight: bold">this</span>.suzanne);<span style="color: #bbbbbb"></span>
+tcm.setTransform(inst,<span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.trackball.getMatrix());<span style="color: #bbbbbb"></span>
+inst.<span style="color: #AA22FF; font-weight: bold">delete</span>();<span style="color: #bbbbbb"></span>
 </pre></div>
 
-<p>That's it, we now have a fast-loading interactive demo. The complete JavaScript file is available
+<p>That&#x27;s it, we now have a fast-loading interactive demo. The complete JavaScript file is available
 <a href="tutorial_suzanne.js">here</a>.</p>
 
 </body>

docs/webgl/tutorial_triangle.html

@@ -8,30 +8,30 @@
 <div class="demo_frame"><iframe src="demo_triangle.html"></iframe><a href="demo_triangle.html">&#x1F517;</a></div>
 <h2>Literate programming</h2>
 <p>The markdown source for this tutorial is not only used to generate this
-web page, it's also used to generate the JavaScript for the above demo.
+web page, it&#x27;s also used to generate the JavaScript for the above demo.
 We use a small Python script for weaving (generating HTML) and tangling
-(generating JS). In the code samples, you'll often see
+(generating JS). In the code samples, you&#x27;ll often see
 <code>// TODO: &lt;some task&gt;</code>. These are special markers that get replaced by
 subsequent code blocks.</p>
 <h2>Start your project</h2>
 <p>First, create a text file called <code>triangle.html</code> and fill it with the following HTML. This creates
 a mobile-friendly page with a full-screen canvas.</p>
 <div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #9C6500">&lt;!DOCTYPE html&gt;</span>
-&lt;<span style="color: #008000; font-weight: bold">html</span> <span style="color: #687822">lang</span><span style="color: #666">=</span><span style="color: #BA2121">&quot;en&quot;</span>&gt;
+&lt;<span style="color: #008000; font-weight: bold">html</span> <span style="color: #687822">lang</span><span style="color: #666666">=</span><span style="color: #BA2121">&quot;en&quot;</span>&gt;
 &lt;<span style="color: #008000; font-weight: bold">head</span>&gt;
     &lt;<span style="color: #008000; font-weight: bold">title</span>&gt;Filament Tutorial&lt;/<span style="color: #008000; font-weight: bold">title</span>&gt;
-    &lt;<span style="color: #008000; font-weight: bold">meta</span> <span style="color: #687822">charset</span><span style="color: #666">=</span><span style="color: #BA2121">&quot;utf-8&quot;</span>&gt;
-    &lt;<span style="color: #008000; font-weight: bold">meta</span> <span style="color: #687822">name</span><span style="color: #666">=</span><span style="color: #BA2121">&quot;viewport&quot;</span> <span style="color: #687822">content</span><span style="color: #666">=</span><span style="color: #BA2121">&quot;width=device-width,user-scalable=no,initial-scale=1&quot;</span>&gt;
-    &lt;<span style="color: #008000; font-weight: bold">style</span>&gt;
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">body</span><span style="color: #BBB"> </span>{<span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">margin</span>:<span style="color: #BBB"> </span><span style="color: #666">0</span>;<span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">overflow</span>:<span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">hidden</span>;<span style="color: #BBB"> </span>}
-<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">canvas</span><span style="color: #BBB"> </span>{<span style="color: #BBB"> </span>touch-action:<span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">none</span>;<span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">width</span>:<span style="color: #BBB"> </span><span style="color: #666">100</span><span style="color: #B00040">%</span>;<span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">height</span>:<span style="color: #BBB"> </span><span style="color: #666">100</span><span style="color: #B00040">%</span>;<span style="color: #BBB"> </span>}
-<span style="color: #BBB">    </span>&lt;/<span style="color: #008000; font-weight: bold">style</span>&gt;
+    &lt;<span style="color: #008000; font-weight: bold">meta</span> <span style="color: #687822">charset</span><span style="color: #666666">=</span><span style="color: #BA2121">&quot;utf-8&quot;</span>&gt;
+    &lt;<span style="color: #008000; font-weight: bold">meta</span> <span style="color: #687822">name</span><span style="color: #666666">=</span><span style="color: #BA2121">&quot;viewport&quot;</span> <span style="color: #687822">content</span><span style="color: #666666">=</span><span style="color: #BA2121">&quot;width=device-width,user-scalable=no,initial-scale=1&quot;</span>&gt;
+    &lt;<span style="color: #008000; font-weight: bold">style</span>&gt;<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">body</span><span style="color: #bbbbbb"> </span>{<span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">margin</span>:<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>;<span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">overflow</span>:<span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">hidden</span>;<span style="color: #bbbbbb"> </span>}<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">canvas</span><span style="color: #bbbbbb"> </span>{<span style="color: #bbbbbb"> </span>touch-action:<span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">none</span>;<span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">width</span>:<span style="color: #bbbbbb"> </span><span style="color: #666666">100</span><span style="color: #B00040">%</span>;<span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">height</span>:<span style="color: #bbbbbb"> </span><span style="color: #666666">100</span><span style="color: #B00040">%</span>;<span style="color: #bbbbbb"> </span>}<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span>&lt;/<span style="color: #008000; font-weight: bold">style</span>&gt;
 &lt;/<span style="color: #008000; font-weight: bold">head</span>&gt;
 &lt;<span style="color: #008000; font-weight: bold">body</span>&gt;
     &lt;<span style="color: #008000; font-weight: bold">canvas</span>&gt;&lt;/<span style="color: #008000; font-weight: bold">canvas</span>&gt;
-    &lt;<span style="color: #008000; font-weight: bold">script</span> <span style="color: #687822">src</span><span style="color: #666">=</span><span style="color: #BA2121">&quot;filament.js&quot;</span>&gt;&lt;/<span style="color: #008000; font-weight: bold">script</span>&gt;
-    &lt;<span style="color: #008000; font-weight: bold">script</span> <span style="color: #687822">src</span><span style="color: #666">=</span><span style="color: #BA2121">&quot;//unpkg.com/gl-matrix@2.8.1&quot;</span>&gt;&lt;/<span style="color: #008000; font-weight: bold">script</span>&gt;
-    &lt;<span style="color: #008000; font-weight: bold">script</span> <span style="color: #687822">src</span><span style="color: #666">=</span><span style="color: #BA2121">&quot;triangle.js&quot;</span>&gt;&lt;/<span style="color: #008000; font-weight: bold">script</span>&gt;
+    &lt;<span style="color: #008000; font-weight: bold">script</span> <span style="color: #687822">src</span><span style="color: #666666">=</span><span style="color: #BA2121">&quot;filament.js&quot;</span>&gt;&lt;/<span style="color: #008000; font-weight: bold">script</span>&gt;
+    &lt;<span style="color: #008000; font-weight: bold">script</span> <span style="color: #687822">src</span><span style="color: #666666">=</span><span style="color: #BA2121">&quot;//unpkg.com/gl-matrix@2.8.1&quot;</span>&gt;&lt;/<span style="color: #008000; font-weight: bold">script</span>&gt;
+    &lt;<span style="color: #008000; font-weight: bold">script</span> <span style="color: #687822">src</span><span style="color: #666666">=</span><span style="color: #BA2121">&quot;triangle.js&quot;</span>&gt;&lt;/<span style="color: #008000; font-weight: bold">script</span>&gt;
 &lt;/<span style="color: #008000; font-weight: bold">body</span>&gt;
 &lt;/<span style="color: #008000; font-weight: bold">html</span>&gt;
 </pre></div>
@@ -48,63 +48,63 @@ a mobile-friendly page with a full-screen canvas.</p>
 <li><code>triangle.js</code> will contain your application code.</li>
 </ul>
 <p>Go ahead and create <code>triangle.js</code> with the following content.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">class</span><span style="color: #BBB"> </span>App<span style="color: #BBB"> </span>{
-<span style="color: #BBB">  </span><span style="color: #008000; font-weight: bold">constructor</span>()<span style="color: #BBB"> </span>{
-<span style="color: #BBB">    </span><span style="color: #3D7B7B; font-style: italic">// TODO: create entities</span>
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.render<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.render.bind(<span style="color: #008000; font-weight: bold">this</span>);
-<span style="color: #BBB">    </span><span style="color: #008000; font-weight: bold">this</span>.resize<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.resize.bind(<span style="color: #008000; font-weight: bold">this</span>);
-<span style="color: #BBB">    </span><span style="color: #008000">window</span>.addEventListener(<span style="color: #BA2121">&#39;resize&#39;</span>,<span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.resize);
-<span style="color: #BBB">    </span><span style="color: #008000">window</span>.requestAnimationFrame(<span style="color: #008000; font-weight: bold">this</span>.render);
-<span style="color: #BBB">  </span>}
-<span style="color: #BBB">  </span>render()<span style="color: #BBB"> </span>{
-<span style="color: #BBB">    </span><span style="color: #3D7B7B; font-style: italic">// TODO: render scene</span>
-<span style="color: #BBB">    </span><span style="color: #008000">window</span>.requestAnimationFrame(<span style="color: #008000; font-weight: bold">this</span>.render);
-<span style="color: #BBB">  </span>}
-<span style="color: #BBB">  </span>resize()<span style="color: #BBB"> </span>{
-<span style="color: #BBB">    </span><span style="color: #3D7B7B; font-style: italic">// TODO: adjust viewport and canvas</span>
-<span style="color: #BBB">  </span>}
-}
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">class</span><span style="color: #bbbbbb"> </span>App<span style="color: #bbbbbb"> </span>{<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span><span style="color: #008000; font-weight: bold">constructor</span>()<span style="color: #bbbbbb"> </span>{<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #3D7B7B; font-style: italic">// TODO: create entities</span><span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.render<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.render.bind(<span style="color: #008000; font-weight: bold">this</span>);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000; font-weight: bold">this</span>.resize<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.resize.bind(<span style="color: #008000; font-weight: bold">this</span>);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000">window</span>.addEventListener(<span style="color: #BA2121">&#39;resize&#39;</span>,<span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.resize);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000">window</span>.requestAnimationFrame(<span style="color: #008000; font-weight: bold">this</span>.render);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>}<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>render()<span style="color: #bbbbbb"> </span>{<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #3D7B7B; font-style: italic">// TODO: render scene</span><span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000">window</span>.requestAnimationFrame(<span style="color: #008000; font-weight: bold">this</span>.render);<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>}<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>resize()<span style="color: #bbbbbb"> </span>{<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #3D7B7B; font-style: italic">// TODO: adjust viewport and canvas</span><span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">  </span>}<span style="color: #bbbbbb"></span>
+}<span style="color: #bbbbbb"></span>
 
-Filament.init([<span style="color: #BA2121">&#39;triangle.filamat&#39;</span>],<span style="color: #BBB"> </span>()<span style="color: #BBB"> </span>=&gt;<span style="color: #BBB"> </span>{<span style="color: #BBB"> </span><span style="color: #008000">window</span>.app<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #A2F; font-weight: bold">new</span><span style="color: #BBB"> </span>App()<span style="color: #BBB"> </span>}<span style="color: #BBB"> </span>);
+Filament.init([<span style="color: #BA2121">&#39;triangle.filamat&#39;</span>],<span style="color: #bbbbbb"> </span>()<span style="color: #bbbbbb"> </span>=&gt;<span style="color: #bbbbbb"> </span>{<span style="color: #bbbbbb"> </span><span style="color: #008000">window</span>.app<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #AA22FF; font-weight: bold">new</span><span style="color: #bbbbbb"> </span>App()<span style="color: #bbbbbb"> </span>}<span style="color: #bbbbbb"> </span>);<span style="color: #bbbbbb"></span>
 </pre></div>
 
 <p>The two calls to <code>bind()</code> allow us to pass instance methods as callbacks for animation and resize
 events.</p>
 <p><code>Filament.init()</code> consumes two things: a list of asset URLs and a callback.</p>
 <p>The callback will be triggered only after all assets finish downloading and the Filament module has
-become ready. In our callback, we simply instantiated the <code>App</code> object, since we'll do most of the
+become ready. In our callback, we simply instantiated the <code>App</code> object, since we&#x27;ll do most of the
 work in its constructor. We also set the app instance into a <code>Window</code> property to make it accessible
 from the developer console.</p>
 <p>Go ahead and download <a href="triangle.filamat">triangle.filamat</a> and place it in your project folder.
 This is a <em>material package</em>, which is a binary file that contains shaders and other bits of data
-that define a PBR material. We'll learn more about material packages in the next tutorial.</p>
+that define a PBR material. We&#x27;ll learn more about material packages in the next tutorial.</p>
 <h2>Spawn a local server</h2>
 <p>Because of CORS restrictions, your web app cannot fetch the material package directly from the
 file system. One way around this is to create a temporary server using Python or node:</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span>python3<span style="color: #BBB"> </span>-m<span style="color: #BBB"> </span>http.server<span style="color: #BBB">     </span><span style="color: #3D7B7B; font-style: italic"># Python 3</span>
-python<span style="color: #BBB"> </span>-m<span style="color: #BBB"> </span>SimpleHTTPServer<span style="color: #BBB"> </span><span style="color: #3D7B7B; font-style: italic"># Python 2.7</span>
-npx<span style="color: #BBB"> </span>http-server<span style="color: #BBB"> </span>-p<span style="color: #BBB"> </span><span style="color: #666">8000</span><span style="color: #BBB">    </span><span style="color: #3D7B7B; font-style: italic"># nodejs</span>
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span>python3 -m http.server     <span style="color: #3D7B7B; font-style: italic"># Python 3</span>
+python -m SimpleHTTPServer <span style="color: #3D7B7B; font-style: italic"># Python 2.7</span>
+npx http-server -p <span style="color: #666666">8000</span>    <span style="color: #3D7B7B; font-style: italic"># nodejs</span>
 </pre></div>
 
 <p>To see if this works, navigate to <a href="http://localhost:8000">http://localhost:8000</a> and check if you
 can load the page without any errors appearing in the developer console.</p>
-<p>Take care not to use Python's simple server in production since it does not serve WebAssembly files
+<p>Take care not to use Python&#x27;s simple server in production since it does not serve WebAssembly files
 with the correct MIME type.</p>
 <h2>Create the Engine and Scene</h2>
-<p>We now have a basic skeleton that can respond to paint and resize events. Let's start adding
+<p>We now have a basic skeleton that can respond to paint and resize events. Let&#x27;s start adding
 Filament objects to the app. Insert the following code into the top of the app constructor.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">this</span>.canvas<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000">document</span>.getElementsByTagName(<span style="color: #BA2121">&#39;canvas&#39;</span>)[<span style="color: #666">0</span>];
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>engine<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.engine<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.Engine.create(<span style="color: #008000; font-weight: bold">this</span>.canvas);
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">this</span>.canvas<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000">document</span>.getElementsByTagName(<span style="color: #BA2121">&#39;canvas&#39;</span>)[<span style="color: #666666">0</span>];<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>engine<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.engine<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.Engine.create(<span style="color: #008000; font-weight: bold">this</span>.canvas);<span style="color: #bbbbbb"></span>
 </pre></div>
 
 <p>The above snippet creates the <code>Engine</code> by passing it a canvas DOM object. The engine needs the
 canvas in order to create a WebGL 2.0 context in its contructor.</p>
 <p>The engine is a factory for many Filament entities, including <code>Scene</code>, which is a flat container of
-entities. Let's go ahead and create a scene, then add a blank entity called <code>triangle</code> into the
+entities. Let&#x27;s go ahead and create a scene, then add a blank entity called <code>triangle</code> into the
 scene.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">this</span>.scene<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>engine.createScene();
-<span style="color: #008000; font-weight: bold">this</span>.triangle<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.EntityManager.get().create();
-<span style="color: #008000; font-weight: bold">this</span>.scene.addEntity(<span style="color: #008000; font-weight: bold">this</span>.triangle);
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">this</span>.scene<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>engine.createScene();<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">this</span>.triangle<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.EntityManager.get().create();<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">this</span>.scene.addEntity(<span style="color: #008000; font-weight: bold">this</span>.triangle);<span style="color: #bbbbbb"></span>
 </pre></div>
 
 <p>Filament uses an <a href="//en.wikipedia.org/wiki/Entity-component-system">Entity-Component System</a>.
@@ -112,30 +112,30 @@ The triangle entity in the above snippet does not yet have an associated compone
 tutorial we will make it into a <em>renderable</em>. Renderables are entities that have associated draw
 calls.</p>
 <h2>Construct typed arrays</h2>
-<p>Next we'll create two typed arrays: a positions array with XY coordinates for each vertex, and a
+<p>Next we&#x27;ll create two typed arrays: a positions array with XY coordinates for each vertex, and a
 colors array with a 32-bit word for each vertex.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>TRIANGLE_POSITIONS<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #A2F; font-weight: bold">new</span><span style="color: #BBB"> </span><span style="color: #008000">Float32Array</span>([
-<span style="color: #BBB">    </span><span style="color: #666">1</span>,<span style="color: #BBB"> </span><span style="color: #666">0</span>,
-<span style="color: #BBB">    </span><span style="color: #008000">Math</span>.cos(<span style="color: #008000">Math</span>.PI<span style="color: #BBB"> </span><span style="color: #666">*</span><span style="color: #BBB"> </span><span style="color: #666">2</span><span style="color: #BBB"> </span><span style="color: #666">/</span><span style="color: #BBB"> </span><span style="color: #666">3</span>),<span style="color: #BBB"> </span><span style="color: #008000">Math</span>.sin(<span style="color: #008000">Math</span>.PI<span style="color: #BBB"> </span><span style="color: #666">*</span><span style="color: #BBB"> </span><span style="color: #666">2</span><span style="color: #BBB"> </span><span style="color: #666">/</span><span style="color: #BBB"> </span><span style="color: #666">3</span>),
-<span style="color: #BBB">    </span><span style="color: #008000">Math</span>.cos(<span style="color: #008000">Math</span>.PI<span style="color: #BBB"> </span><span style="color: #666">*</span><span style="color: #BBB"> </span><span style="color: #666">4</span><span style="color: #BBB"> </span><span style="color: #666">/</span><span style="color: #BBB"> </span><span style="color: #666">3</span>),<span style="color: #BBB"> </span><span style="color: #008000">Math</span>.sin(<span style="color: #008000">Math</span>.PI<span style="color: #BBB"> </span><span style="color: #666">*</span><span style="color: #BBB"> </span><span style="color: #666">4</span><span style="color: #BBB"> </span><span style="color: #666">/</span><span style="color: #BBB"> </span><span style="color: #666">3</span>),
-]);
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>TRIANGLE_POSITIONS<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #AA22FF; font-weight: bold">new</span><span style="color: #bbbbbb"> </span><span style="color: #008000">Float32Array</span>([<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #666666">1</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>,<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000">Math</span>.cos(<span style="color: #008000">Math</span>.PI<span style="color: #bbbbbb"> </span><span style="color: #666666">*</span><span style="color: #bbbbbb"> </span><span style="color: #666666">2</span><span style="color: #bbbbbb"> </span><span style="color: #666666">/</span><span style="color: #bbbbbb"> </span><span style="color: #666666">3</span>),<span style="color: #bbbbbb"> </span><span style="color: #008000">Math</span>.sin(<span style="color: #008000">Math</span>.PI<span style="color: #bbbbbb"> </span><span style="color: #666666">*</span><span style="color: #bbbbbb"> </span><span style="color: #666666">2</span><span style="color: #bbbbbb"> </span><span style="color: #666666">/</span><span style="color: #bbbbbb"> </span><span style="color: #666666">3</span>),<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000">Math</span>.cos(<span style="color: #008000">Math</span>.PI<span style="color: #bbbbbb"> </span><span style="color: #666666">*</span><span style="color: #bbbbbb"> </span><span style="color: #666666">4</span><span style="color: #bbbbbb"> </span><span style="color: #666666">/</span><span style="color: #bbbbbb"> </span><span style="color: #666666">3</span>),<span style="color: #bbbbbb"> </span><span style="color: #008000">Math</span>.sin(<span style="color: #008000">Math</span>.PI<span style="color: #bbbbbb"> </span><span style="color: #666666">*</span><span style="color: #bbbbbb"> </span><span style="color: #666666">4</span><span style="color: #bbbbbb"> </span><span style="color: #666666">/</span><span style="color: #bbbbbb"> </span><span style="color: #666666">3</span>),<span style="color: #bbbbbb"></span>
+]);<span style="color: #bbbbbb"></span>
 
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>TRIANGLE_COLORS<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #A2F; font-weight: bold">new</span><span style="color: #BBB"> </span><span style="color: #008000">Uint32Array</span>([<span style="color: #666">0xffff0000</span>,<span style="color: #BBB"> </span><span style="color: #666">0xff00ff00</span>,<span style="color: #BBB"> </span><span style="color: #666">0xff0000ff</span>]);
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>TRIANGLE_COLORS<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #AA22FF; font-weight: bold">new</span><span style="color: #bbbbbb"> </span><span style="color: #008000">Uint32Array</span>([<span style="color: #666666">0xffff0000</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0xff00ff00</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0xff0000ff</span>]);<span style="color: #bbbbbb"></span>
 </pre></div>
 
-<p>Next we'll use the positions and colors buffers to create a single <code>VertexBuffer</code> object.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>VertexAttribute<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.VertexAttribute;
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>AttributeType<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.VertexBuffer$AttributeType;
-<span style="color: #008000; font-weight: bold">this</span>.vb<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.VertexBuffer.Builder()
-<span style="color: #BBB">    </span>.vertexCount(<span style="color: #666">3</span>)
-<span style="color: #BBB">    </span>.bufferCount(<span style="color: #666">2</span>)
-<span style="color: #BBB">    </span>.attribute(VertexAttribute.POSITION,<span style="color: #BBB"> </span><span style="color: #666">0</span>,<span style="color: #BBB"> </span>AttributeType.FLOAT2,<span style="color: #BBB"> </span><span style="color: #666">0</span>,<span style="color: #BBB"> </span><span style="color: #666">8</span>)
-<span style="color: #BBB">    </span>.attribute(VertexAttribute.COLOR,<span style="color: #BBB"> </span><span style="color: #666">1</span>,<span style="color: #BBB"> </span>AttributeType.UBYTE4,<span style="color: #BBB"> </span><span style="color: #666">0</span>,<span style="color: #BBB"> </span><span style="color: #666">4</span>)
-<span style="color: #BBB">    </span>.normalized(VertexAttribute.COLOR)
-<span style="color: #BBB">    </span>.build(engine);
+<p>Next we&#x27;ll use the positions and colors buffers to create a single <code>VertexBuffer</code> object.</p>
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>VertexAttribute<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.VertexAttribute;<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>AttributeType<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.VertexBuffer$AttributeType;<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">this</span>.vb<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.VertexBuffer.Builder()<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span>.vertexCount(<span style="color: #666666">3</span>)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span>.bufferCount(<span style="color: #666666">2</span>)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span>.attribute(VertexAttribute.POSITION,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span>AttributeType.FLOAT2,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">8</span>)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span>.attribute(VertexAttribute.COLOR,<span style="color: #bbbbbb"> </span><span style="color: #666666">1</span>,<span style="color: #bbbbbb"> </span>AttributeType.UBYTE4,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">4</span>)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span>.normalized(VertexAttribute.COLOR)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span>.build(engine);<span style="color: #bbbbbb"></span>
 
-<span style="color: #008000; font-weight: bold">this</span>.vb.setBufferAt(engine,<span style="color: #BBB"> </span><span style="color: #666">0</span>,<span style="color: #BBB"> </span>TRIANGLE_POSITIONS);
-<span style="color: #008000; font-weight: bold">this</span>.vb.setBufferAt(engine,<span style="color: #BBB"> </span><span style="color: #666">1</span>,<span style="color: #BBB"> </span>TRIANGLE_COLORS);
+<span style="color: #008000; font-weight: bold">this</span>.vb.setBufferAt(engine,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span>TRIANGLE_POSITIONS);<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">this</span>.vb.setBufferAt(engine,<span style="color: #bbbbbb"> </span><span style="color: #666666">1</span>,<span style="color: #bbbbbb"> </span>TRIANGLE_COLORS);<span style="color: #bbbbbb"></span>
 </pre></div>
 
 <p>The above snippet first creates aliases for two enum types, then constructs the vertex buffer using
@@ -147,74 +147,74 @@ self-documenting.</p>
 <p>Our app sets up two buffer slots in the vertex buffer, and each slot is associated with a single
 attribute. Alternatively, we could have interleaved or concatenated these attributes into a single
 buffer slot.</p>
-<p>Next we'll construct an index buffer. The index buffer for our triangle is trivial: it simply holds
+<p>Next we&#x27;ll construct an index buffer. The index buffer for our triangle is trivial: it simply holds
 the integers 0,1,2.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">this</span>.ib<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.IndexBuffer.Builder()
-<span style="color: #BBB">    </span>.indexCount(<span style="color: #666">3</span>)
-<span style="color: #BBB">    </span>.bufferType(Filament.IndexBuffer$IndexType.USHORT)
-<span style="color: #BBB">    </span>.build(engine);
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">this</span>.ib<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.IndexBuffer.Builder()<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span>.indexCount(<span style="color: #666666">3</span>)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span>.bufferType(Filament.IndexBuffer$IndexType.USHORT)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span>.build(engine);<span style="color: #bbbbbb"></span>
 
-<span style="color: #008000; font-weight: bold">this</span>.ib.setBuffer(engine,<span style="color: #BBB"> </span><span style="color: #A2F; font-weight: bold">new</span><span style="color: #BBB"> </span><span style="color: #008000">Uint16Array</span>([<span style="color: #666">0</span>,<span style="color: #BBB"> </span><span style="color: #666">1</span>,<span style="color: #BBB"> </span><span style="color: #666">2</span>]));
+<span style="color: #008000; font-weight: bold">this</span>.ib.setBuffer(engine,<span style="color: #bbbbbb"> </span><span style="color: #AA22FF; font-weight: bold">new</span><span style="color: #bbbbbb"> </span><span style="color: #008000">Uint16Array</span>([<span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">1</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">2</span>]));<span style="color: #bbbbbb"></span>
 </pre></div>
 
 <p>Note that constructing an index buffer is similar to constructing a vertex buffer, but it only has
 one buffer slot, and it can only contain two types of data (USHORT or UINT).</p>
 <h2>Finish up initialization</h2>
-<p>Next let's construct an actual <code>Material</code> from the material package that was downloaded (the
+<p>Next let&#x27;s construct an actual <code>Material</code> from the material package that was downloaded (the
 material is an object; the package is just a binary blob), then extract the default
 <code>MaterialInstance</code> from the material object. Material instances have concrete values for their
-parameters, and they can be bound to renderables. We'll learn more about material instances in the
+parameters, and they can be bound to renderables. We&#x27;ll learn more about material instances in the
 next tutorial.</p>
 <p>After extracting the material instance, we can finally create a renderable component for the
 triangle by setting up a bounding box and passing in the vertex and index buffers.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>mat<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>engine.createMaterial(<span style="color: #BA2121">&#39;triangle.filamat&#39;</span>);
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>matinst<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>mat.getDefaultInstance();
-Filament.RenderableManager.Builder(<span style="color: #666">1</span>)
-<span style="color: #BBB">    </span>.boundingBox({<span style="color: #BBB"> </span>center<span style="color: #666">:</span><span style="color: #BBB"> </span>[<span style="color: #666">-1</span>,<span style="color: #BBB"> </span><span style="color: #666">-1</span>,<span style="color: #BBB"> </span><span style="color: #666">-1</span>],<span style="color: #BBB"> </span>halfExtent<span style="color: #666">:</span><span style="color: #BBB"> </span>[<span style="color: #666">1</span>,<span style="color: #BBB"> </span><span style="color: #666">1</span>,<span style="color: #BBB"> </span><span style="color: #666">1</span>]<span style="color: #BBB"> </span>})
-<span style="color: #BBB">    </span>.material(<span style="color: #666">0</span>,<span style="color: #BBB"> </span>matinst)
-<span style="color: #BBB">    </span>.geometry(<span style="color: #666">0</span>,<span style="color: #BBB"> </span>Filament.RenderableManager$PrimitiveType.TRIANGLES,<span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.vb,<span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.ib)
-<span style="color: #BBB">    </span>.build(engine,<span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.triangle);
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>mat<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>engine.createMaterial(<span style="color: #BA2121">&#39;triangle.filamat&#39;</span>);<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>matinst<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>mat.getDefaultInstance();<span style="color: #bbbbbb"></span>
+Filament.RenderableManager.Builder(<span style="color: #666666">1</span>)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span>.boundingBox({<span style="color: #bbbbbb"> </span>center<span style="color: #666666">:</span><span style="color: #bbbbbb"> </span>[<span style="color: #666666">-1</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">-1</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">-1</span>],<span style="color: #bbbbbb"> </span>halfExtent<span style="color: #666666">:</span><span style="color: #bbbbbb"> </span>[<span style="color: #666666">1</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">1</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">1</span>]<span style="color: #bbbbbb"> </span>})<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span>.material(<span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span>matinst)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span>.geometry(<span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span>Filament.RenderableManager$PrimitiveType.TRIANGLES,<span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.vb,<span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.ib)<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span>.build(engine,<span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.triangle);<span style="color: #bbbbbb"></span>
 </pre></div>
 
-<p>Next let's wrap up the initialization routine by creating the swap chain, renderer, camera, and
+<p>Next let&#x27;s wrap up the initialization routine by creating the swap chain, renderer, camera, and
 view.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">this</span>.swapChain<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>engine.createSwapChain();
-<span style="color: #008000; font-weight: bold">this</span>.renderer<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>engine.createRenderer();
-<span style="color: #008000; font-weight: bold">this</span>.camera<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>engine.createCamera(Filament.EntityManager.get().create());
-<span style="color: #008000; font-weight: bold">this</span>.view<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>engine.createView();
-<span style="color: #008000; font-weight: bold">this</span>.view.setCamera(<span style="color: #008000; font-weight: bold">this</span>.camera);
-<span style="color: #008000; font-weight: bold">this</span>.view.setScene(<span style="color: #008000; font-weight: bold">this</span>.scene);
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">this</span>.swapChain<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>engine.createSwapChain();<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">this</span>.renderer<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>engine.createRenderer();<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">this</span>.camera<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>engine.createCamera(Filament.EntityManager.get().create());<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">this</span>.view<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>engine.createView();<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">this</span>.view.setCamera(<span style="color: #008000; font-weight: bold">this</span>.camera);<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">this</span>.view.setScene(<span style="color: #008000; font-weight: bold">this</span>.scene);<span style="color: #bbbbbb"></span>
 
-<span style="color: #3D7B7B; font-style: italic">// Set up a blue-green background:</span>
-<span style="color: #008000; font-weight: bold">this</span>.renderer.setClearOptions({clearColor<span style="color: #666">:</span><span style="color: #BBB"> </span>[<span style="color: #666">0.0</span>,<span style="color: #BBB"> </span><span style="color: #666">0.1</span>,<span style="color: #BBB"> </span><span style="color: #666">0.2</span>,<span style="color: #BBB"> </span><span style="color: #666">1.0</span>],<span style="color: #BBB"> </span>clear<span style="color: #666">:</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">true</span>});
+<span style="color: #3D7B7B; font-style: italic">// Set up a blue-green background:</span><span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">this</span>.renderer.setClearOptions({clearColor<span style="color: #666666">:</span><span style="color: #bbbbbb"> </span>[<span style="color: #666666">0.0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0.1</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0.2</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">1.0</span>],<span style="color: #bbbbbb"> </span>clear<span style="color: #666666">:</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">true</span>});<span style="color: #bbbbbb"></span>
 
-<span style="color: #3D7B7B; font-style: italic">// Adjust the initial viewport:</span>
-<span style="color: #008000; font-weight: bold">this</span>.resize();
+<span style="color: #3D7B7B; font-style: italic">// Adjust the initial viewport:</span><span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">this</span>.resize();<span style="color: #bbbbbb"></span>
 </pre></div>
 
-<p>At this point, we're done creating all Filament entities, and the code should run without errors.
+<p>At this point, we&#x27;re done creating all Filament entities, and the code should run without errors.
 However the canvas is still blank!</p>
 <h2>Render and resize handlers</h2>
 <p>Recall that our App class has a skeletal render method, which the browser calls every time it needs
 to repaint. Often this is 60 times a second.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span>render()<span style="color: #BBB"> </span>{
-<span style="color: #BBB">    </span><span style="color: #3D7B7B; font-style: italic">// TODO: render scene</span>
-<span style="color: #BBB">    </span><span style="color: #008000">window</span>.requestAnimationFrame(<span style="color: #008000; font-weight: bold">this</span>.render);
-}
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span>render()<span style="color: #bbbbbb"> </span>{<span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #3D7B7B; font-style: italic">// TODO: render scene</span><span style="color: #bbbbbb"></span>
+<span style="color: #bbbbbb">    </span><span style="color: #008000">window</span>.requestAnimationFrame(<span style="color: #008000; font-weight: bold">this</span>.render);<span style="color: #bbbbbb"></span>
+}<span style="color: #bbbbbb"></span>
 </pre></div>
 
-<p>Let's flesh this out by rotating the triangle and invoking the Filament renderer. Add the following
+<p>Let&#x27;s flesh this out by rotating the triangle and invoking the Filament renderer. Add the following
 code to the top of the render method.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #3D7B7B; font-style: italic">// Rotate the triangle.</span>
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>radians<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000">Date</span>.now()<span style="color: #BBB"> </span><span style="color: #666">/</span><span style="color: #BBB"> </span><span style="color: #666">1000</span>;
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>transform<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>mat4.fromRotation(mat4.create(),<span style="color: #BBB"> </span>radians,<span style="color: #BBB"> </span>[<span style="color: #666">0</span>,<span style="color: #BBB"> </span><span style="color: #666">0</span>,<span style="color: #BBB"> </span><span style="color: #666">1</span>]);
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>tcm<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.getTransformManager();
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>inst<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>tcm.getInstance(<span style="color: #008000; font-weight: bold">this</span>.triangle);
-tcm.setTransform(inst,<span style="color: #BBB"> </span>transform);
-inst.<span style="color: #A2F; font-weight: bold">delete</span>();
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #3D7B7B; font-style: italic">// Rotate the triangle.</span><span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>radians<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000">Date</span>.now()<span style="color: #bbbbbb"> </span><span style="color: #666666">/</span><span style="color: #bbbbbb"> </span><span style="color: #666666">1000</span>;<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>transform<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>mat4.fromRotation(mat4.create(),<span style="color: #bbbbbb"> </span>radians,<span style="color: #bbbbbb"> </span>[<span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">1</span>]);<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>tcm<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.engine.getTransformManager();<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>inst<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>tcm.getInstance(<span style="color: #008000; font-weight: bold">this</span>.triangle);<span style="color: #bbbbbb"></span>
+tcm.setTransform(inst,<span style="color: #bbbbbb"> </span>transform);<span style="color: #bbbbbb"></span>
+inst.<span style="color: #AA22FF; font-weight: bold">delete</span>();<span style="color: #bbbbbb"></span>
 
-<span style="color: #3D7B7B; font-style: italic">// Render the frame.</span>
-<span style="color: #008000; font-weight: bold">this</span>.renderer.render(<span style="color: #008000; font-weight: bold">this</span>.swapChain,<span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.view);
+<span style="color: #3D7B7B; font-style: italic">// Render the frame.</span><span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">this</span>.renderer.render(<span style="color: #008000; font-weight: bold">this</span>.swapChain,<span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.view);<span style="color: #bbbbbb"></span>
 </pre></div>
 
 <p>The first half of our render method obtains the transform component of the triangle entity and uses
@@ -225,19 +225,19 @@ that it wants to skip a frame, hence the <code>if</code> statement.</p>
 <p>One last step. Add the following code to the resize method. This adjusts the resolution of the
 rendering surface when the window size changes, taking <code>devicePixelRatio</code> into account for high-DPI
 displays. It also adjusts the camera frustum accordingly.</p>
-<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>dpr<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000">window</span>.devicePixelRatio;
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>width<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.canvas.width<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000">window</span>.innerWidth<span style="color: #BBB"> </span><span style="color: #666">*</span><span style="color: #BBB"> </span>dpr;
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>height<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000; font-weight: bold">this</span>.canvas.height<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #008000">window</span>.innerHeight<span style="color: #BBB"> </span><span style="color: #666">*</span><span style="color: #BBB"> </span>dpr;
-<span style="color: #008000; font-weight: bold">this</span>.view.setViewport([<span style="color: #666">0</span>,<span style="color: #BBB"> </span><span style="color: #666">0</span>,<span style="color: #BBB"> </span>width,<span style="color: #BBB"> </span>height]);
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>dpr<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000">window</span>.devicePixelRatio;<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>width<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.canvas.width<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000">window</span>.innerWidth<span style="color: #bbbbbb"> </span><span style="color: #666666">*</span><span style="color: #bbbbbb"> </span>dpr;<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>height<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000; font-weight: bold">this</span>.canvas.height<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #008000">window</span>.innerHeight<span style="color: #bbbbbb"> </span><span style="color: #666666">*</span><span style="color: #bbbbbb"> </span>dpr;<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">this</span>.view.setViewport([<span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span>width,<span style="color: #bbbbbb"> </span>height]);<span style="color: #bbbbbb"></span>
 
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>aspect<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>width<span style="color: #BBB"> </span><span style="color: #666">/</span><span style="color: #BBB"> </span>height;
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>Projection<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.Camera$Projection;
-<span style="color: #008000; font-weight: bold">this</span>.camera.setProjection(Projection.ORTHO,<span style="color: #BBB"> </span><span style="color: #666">-</span>aspect,<span style="color: #BBB"> </span>aspect,<span style="color: #BBB"> </span><span style="color: #666">-1</span>,<span style="color: #BBB"> </span><span style="color: #666">1</span>,<span style="color: #BBB"> </span><span style="color: #666">0</span>,<span style="color: #BBB"> </span><span style="color: #666">1</span>);
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>aspect<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>width<span style="color: #bbbbbb"> </span><span style="color: #666666">/</span><span style="color: #bbbbbb"> </span>height;<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>Projection<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>Filament.Camera$Projection;<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">this</span>.camera.setProjection(Projection.ORTHO,<span style="color: #bbbbbb"> </span><span style="color: #666666">-</span>aspect,<span style="color: #bbbbbb"> </span>aspect,<span style="color: #bbbbbb"> </span><span style="color: #666666">-1</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">1</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">1</span>);<span style="color: #bbbbbb"></span>
 </pre></div>
 
 <p>You should now have a spinning triangle! The completed JavaScript is available
 <a href="tutorial_triangle.js">here</a>.</p>
-<p>In the <a href="tutorial_redball.html">next tutorial</a>, we'll take a closer look at Filament materials and 3D rendering.</p>
+<p>In the <a href="tutorial_redball.html">next tutorial</a>, we&#x27;ll take a closer look at Filament materials and 3D rendering.</p>
 
 </body>
 </html>

docs_src/src/SUMMARY.md

@@ -18,7 +18,6 @@
     - [Metal](./notes/metal_debugging.md)
     - [Vulkan](./notes/vulkan_debugging.md)
     - [SPIR-V](./notes/spirv_debugging.md)
-    - [Running with ASAN and UBSAN](./notes/asan_ubsan.md)
   - [Libraries](./notes/libs.md)
     - [bluegl](./dup/bluegl.md)
     - [bluevk](./dup/bluevk.md)

docs_src/src/notes/asan_ubsan.md

@@ -1,41 +0,0 @@
-# Running with ASAN/UBSAN
-
-## Enabling
-
-When building though build.sh, pass the `-b` flag. This sets the cmake variable
-`FILAMENT_ENABLE_ASAN_UBSAN=ON` which eventually passes `"-fsanitize=address -fsanitize=undefined"`
-to all compile and link operations.
-
-If building through CMake directly, or an IDE like CLion that doesn't use build.sh, instead pass
-`-DFILAMENT_ENABLE_ASAN_UBSAN=ON` to cmake in order to get the same result.
-
-## Getting memory leak detection on Mac
-
-Memory leak detection isn't enabled by default on MacOS. There are two issues to address, first is
-using a version of clang that supports memory leak detection and second is enabling it at runtime.
-
-The version of clang distributed by Apple (with a version like "Apple clang version 16.0.0") doesn't
-currently support leak detection at all. Instead you will need to get or build a different LLVM,
-such as the one distributed through homebrew and get CMake to use that instead.
-
-Then during runtime you'll need to have the environment variable `ASAN_OPTIONS` include the option
-`detect_leaks=1`. Multiple `ASAN_OPTIONS` values are concatenated with `:`.
-
-## Getting memory leak output in CLion
-
-### Setting variables
-
-Under `Settings | Build, Execution, Deployment | Dynamic Analysis Tools | Sanitizers` there is an
-ASAN Settings field that overrides whatever other `ASAN_OPTIONS` you might set elsewhere, so you
-must use that instead of setting it through your Run/Debug Configuration.
-
-To pass `-DFILAMENT_ENABLE_ASAN_UBSAN=ON` to CMake you'll want to create a new CMake Profile and
-pass it as a CMake argument.
-
-### Avoiding losing output
-
-CMake will consume ASAN output and display it through a separate "Sanitizers" tab. Unfortunately
-certain leak detection errors that interrupt the executable seem to not show up in this tab, but are
-still removed from the user-visible console output. If this is happening and you need to see the
-unfiltered console output you'll need to go to `Settings | Build, Execution, Deployment | Dynamic
-Analysis Tools | Sanitizers` and uncheck "Use visual representation for Sanitizer's output".

filament/backend/CMakeLists.txt

@@ -108,12 +108,8 @@ if (FILAMENT_SUPPORTS_OPENGL AND NOT FILAMENT_USE_EXTERNAL_GLES3)
         list(APPEND SRCS src/opengl/platforms/PlatformCocoaTouchGL.mm)
         list(APPEND SRCS src/opengl/platforms/CocoaTouchExternalImage.mm)
     elseif (APPLE)
-        if (FILAMENT_SUPPORTS_OSMESA)
-            list(APPEND SRCS src/opengl/platforms/PlatformOSMesa.cpp)
-        else()
-            list(APPEND SRCS src/opengl/platforms/PlatformCocoaGL.mm)
-            list(APPEND SRCS src/opengl/platforms/CocoaExternalImage.mm)
-        endif()
+        list(APPEND SRCS src/opengl/platforms/PlatformCocoaGL.mm)
+        list(APPEND SRCS src/opengl/platforms/CocoaExternalImage.mm)
     elseif (WEBGL)
         list(APPEND SRCS src/opengl/platforms/PlatformWebGL.cpp)
     elseif (LINUX)
@@ -177,6 +173,27 @@ endif()
 if (FILAMENT_SUPPORTS_VULKAN)
     list(APPEND SRCS
             include/backend/platforms/VulkanPlatform.h
+            src/vulkan/caching/VulkanDescriptorSetManager.cpp
+            src/vulkan/caching/VulkanDescriptorSetManager.h
+            src/vulkan/caching/VulkanPipelineLayoutCache.cpp
+            src/vulkan/caching/VulkanPipelineLayoutCache.h
+            src/vulkan/memory/ResourceManager.cpp
+            src/vulkan/memory/ResourceManager.h
+            src/vulkan/memory/ResourcePointer.h
+            src/vulkan/memory/Resource.cpp
+            src/vulkan/memory/Resource.h
+            src/vulkan/platform/VulkanPlatform.cpp
+            src/vulkan/platform/VulkanPlatformSwapChainImpl.cpp
+            src/vulkan/platform/VulkanPlatformSwapChainImpl.h
+            src/vulkan/utils/Conversion.cpp
+            src/vulkan/utils/Conversion.h
+            src/vulkan/utils/Definitions.h
+            src/vulkan/utils/Helper.h
+            src/vulkan/utils/Image.h
+            src/vulkan/utils/Image.cpp
+            src/vulkan/utils/Spirv.h
+            src/vulkan/utils/Spirv.cpp
+            src/vulkan/utils/StaticVector.h
             src/vulkan/VulkanAsyncHandles.h
             src/vulkan/VulkanBlitter.cpp
             src/vulkan/VulkanBlitter.h
@@ -187,107 +204,46 @@ if (FILAMENT_SUPPORTS_VULKAN)
             src/vulkan/VulkanConstants.h
             src/vulkan/VulkanContext.cpp
             src/vulkan/VulkanContext.h
-            src/vulkan/VulkanDescriptorSetCache.cpp
-            src/vulkan/VulkanDescriptorSetCache.h
-            src/vulkan/VulkanDescriptorSetLayoutCache.cpp
-            src/vulkan/VulkanDescriptorSetLayoutCache.h
             src/vulkan/VulkanDriver.cpp
             src/vulkan/VulkanDriver.h
             src/vulkan/VulkanDriverFactory.h
-            src/vulkan/VulkanExternalImageManager.cpp
-            src/vulkan/VulkanExternalImageManager.h
             src/vulkan/VulkanFboCache.cpp
             src/vulkan/VulkanFboCache.h
             src/vulkan/VulkanHandles.cpp
             src/vulkan/VulkanHandles.h
-            src/vulkan/VulkanMemory.cpp
             src/vulkan/VulkanMemory.h
+            src/vulkan/VulkanMemory.cpp
             src/vulkan/VulkanPipelineCache.cpp
             src/vulkan/VulkanPipelineCache.h
-            src/vulkan/VulkanPipelineLayoutCache.cpp
-            src/vulkan/VulkanPipelineLayoutCache.h
             src/vulkan/VulkanQueryManager.cpp
             src/vulkan/VulkanQueryManager.h
-            src/vulkan/VulkanReadPixels.cpp
-            src/vulkan/VulkanReadPixels.h
             src/vulkan/VulkanSamplerCache.cpp
             src/vulkan/VulkanSamplerCache.h
             src/vulkan/VulkanStagePool.cpp
             src/vulkan/VulkanStagePool.h
             src/vulkan/VulkanSwapChain.cpp
             src/vulkan/VulkanSwapChain.h
+            src/vulkan/VulkanReadPixels.cpp
+            src/vulkan/VulkanReadPixels.h
             src/vulkan/VulkanTexture.cpp
             src/vulkan/VulkanTexture.h
-            src/vulkan/VulkanYcbcrConversionCache.cpp
-            src/vulkan/VulkanYcbcrConversionCache.h
-            src/vulkan/memory/Resource.cpp
-            src/vulkan/memory/Resource.h
-            src/vulkan/memory/ResourceManager.cpp
-            src/vulkan/memory/ResourceManager.h
-            src/vulkan/memory/ResourcePointer.h
-            src/vulkan/platform/VulkanPlatform.cpp
-            src/vulkan/platform/VulkanPlatformSwapChainImpl.cpp
-            src/vulkan/platform/VulkanPlatformSwapChainImpl.h
-            src/vulkan/utils/Conversion.cpp
-            src/vulkan/utils/Conversion.h
-            src/vulkan/utils/Definitions.h
-            src/vulkan/utils/Helper.h
-            src/vulkan/utils/Image.cpp
-            src/vulkan/utils/Image.h
-            src/vulkan/utils/Spirv.cpp
-            src/vulkan/utils/Spirv.h
-            src/vulkan/utils/StaticVector.h
     )
     if (LINUX OR WIN32)
         list(APPEND SRCS src/vulkan/platform/VulkanPlatformLinuxWindows.cpp)
     elseif (APPLE OR IOS)
         list(APPEND SRCS src/vulkan/platform/VulkanPlatformApple.mm)
     elseif (ANDROID)
-        list(APPEND SRCS
-            include/backend/platforms/VulkanPlatformAndroid.h
-            src/vulkan/platform/VulkanPlatformAndroid.cpp
-        )
+        list(APPEND SRCS src/vulkan/platform/VulkanPlatformAndroid.cpp)
     endif()
 endif()
 
 if (FILAMENT_SUPPORTS_WEBGPU)
     list(APPEND SRCS
-            include/backend/platforms/WebGPUPlatform.h
-            src/webgpu/platform/WebGPUPlatform.cpp
-            src/webgpu/WebGPUConstants.h
             src/webgpu/WebGPUDriver.cpp
             src/webgpu/WebGPUDriver.h
-            src/webgpu/WebGPUHandles.cpp
-            src/webgpu/WebGPUHandles.h
-            src/webgpu/WebGPUPipelineCreation.cpp
-            src/webgpu/WebGPUPipelineCreation.h
-            src/webgpu/WebGPUSwapChain.cpp
-            src/webgpu/WebGPUSwapChain.h
-            src/webgpu/WGPUProgram.cpp
+            src/webgpu/WebGPUPlatform.cpp
+            src/webgpu/WebGPUPlatform.h
     )
-    if (WIN32)
-        list(APPEND SRCS src/webgpu/platform/WebGPUPlatformWindows.cpp)
-    elseif (LINUX)
-        list(APPEND SRCS src/webgpu/platform/WebGPUPlatformLinux.cpp)
-    elseif (APPLE OR IOS)
-        list(APPEND SRCS src/webgpu/platform/WebGPUPlatformApple.mm)
-    elseif (ANDROID)
-        list(APPEND SRCS src/webgpu/platform/WebGPUPlatformAndroid.cpp)
-    endif()
-
-    if (TNT_DEV)
-        set(FILAMENT_WEBGPU_IMMEDIATE_ERROR_HANDLING_DEFAULT ON)
-    else()
-        set(FILAMENT_WEBGPU_IMMEDIATE_ERROR_HANDLING_DEFAULT OFF)
-    endif()
-
-    option(FILAMENT_WEBGPU_IMMEDIATE_ERROR_HANDLING
-            "Enable immediate_error_handling for the WebGPU backend Dawn implementation"
-            ${FILAMENT_WEBGPU_IMMEDIATE_ERROR_HANDLING_DEFAULT})
-endif()
-
-if (ANDROID)
-    list(APPEND SRCS src/BackendUtilsAndroid.cpp)
 endif()
 
 # ==================================================================================================
@@ -313,11 +269,6 @@ target_include_directories(${TARGET} PUBLIC ${PUBLIC_HDR_DIR})
 # add this subproject to the Filament folder
 set_target_properties(${TARGET} PROPERTIES FOLDER Filament)
 
-# we need to export the headers properly for backend.lib on windows
-if (WIN32 AND FILAMENT_SUPPORTS_WEBGPU)
-    target_compile_definitions(${TARGET} PRIVATE "WGPU_IMPLEMENTATION")
-endif()
-
 # ==================================================================================================
 # Expose a header-only target to minimize dependencies.
 # ==================================================================================================
@@ -438,12 +389,9 @@ set(LINUX_LINKER_OPTIMIZATION_FLAGS
         -Wl,--exclude-libs,bluegl
 )
 
-if (FILAMENT_SUPPORTS_OSMESA)
-    if (LINUX)
-        set(OSMESA_COMPILE_FLAGS -I${FILAMENT_OSMESA_PATH}/include/GL)
-    elseif (APPLE)
-        set(OSMESA_COMPILE_FLAGS -I${FILAMENT_OSMESA_PATH}/include)
-    endif()
+if (LINUX AND FILAMENT_SUPPORTS_OSMESA)
+    set(OSMESA_COMPILE_FLAGS
+        -I${FILAMENT_OSMESA_PATH}/include/GL)
 endif()
 
 if (MSVC)
@@ -478,10 +426,6 @@ if (FILAMENT_SUPPORTS_METAL)
     target_compile_definitions(${TARGET} PRIVATE $<$<BOOL:${FILAMENT_METAL_PROFILING}>:FILAMENT_METAL_PROFILING>)
 endif()
 
-if (FILAMENT_SUPPORTS_WEBGPU)
-    target_compile_definitions(${TARGET} PRIVATE $<$<BOOL:${FILAMENT_WEBGPU_IMMEDIATE_ERROR_HANDLING}>:FILAMENT_WEBGPU_IMMEDIATE_ERROR_HANDLING>)
-endif()
-
 target_link_libraries(${TARGET} PRIVATE
         ${OSMESA_LINKER_FLAGS}
         $<$<AND:$<PLATFORM_ID:Linux>,$<CONFIG:Release>>:${LINUX_LINKER_OPTIMIZATION_FLAGS}>
@@ -510,12 +454,6 @@ if (APPLE OR LINUX)
         test/ShaderGenerator.cpp
         test/TrianglePrimitive.cpp
         test/Arguments.cpp
-        test/ImageExpectations.cpp
-        test/Lifetimes.cpp
-        test/PlatformRunner.cpp
-        test/Shader.cpp
-        test/SharedShaders.cpp
-        test/Skip.cpp
         test/test_FeedbackLoops.cpp
         test/test_Blit.cpp
         test/test_MissingRequiredAttributes.cpp
@@ -531,7 +469,6 @@ if (APPLE OR LINUX)
         test/test_Handles.cpp
     )
     set(BACKEND_TEST_LIBS
-        absl::str_format
         backend
         getopt
         gtest
@@ -539,9 +476,6 @@ if (APPLE OR LINUX)
         filamat
         SPIRV
         spirv-cross-glsl)
-    # Create input/output directories for test result images.
-    file(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/images/actual_images)
-    file(COPY test/expected_images DESTINATION ${CMAKE_CURRENT_BINARY_DIR}/images)
 endif()
 
 # TODO: Disabling IOS test due to breakage wrt glslang update
@@ -550,7 +484,7 @@ if (APPLE AND NOT IOS)
     list(APPEND BACKEND_TEST_SRC
          test/test_RenderExternalImage.cpp)
     add_library(backend_test STATIC ${BACKEND_TEST_SRC})
-    target_link_libraries(backend_test PUBLIC ${BACKEND_TEST_LIBS})
+    target_link_libraries(backend_test PRIVATE ${BACKEND_TEST_LIBS})
 
     set(BACKEND_TEST_DEPS
             OSDependent

filament/backend/include/backend/BufferObjectStreamDescriptor.h

@@ -55,9 +55,4 @@ public:
 
 } // namespace filament::backend
 
-#if !defined(NDEBUG)
-utils::io::ostream& operator<<(utils::io::ostream& out,
-        const filament::backend::BufferObjectStreamDescriptor& b);
-#endif
-
 #endif // TNT_FILAMENT_BACKEND_BUFFEROBJECTSTREAMDESCRIPTOR_H

filament/backend/include/backend/DriverEnums.h

@@ -30,14 +30,12 @@
 #include <utils/compiler.h>
 #include <utils/debug.h>
 #include <utils/ostream.h>
-#include <utils/StaticString.h>
 
 #include <math/vec4.h>
 
 #include <array>
 #include <type_traits>
 #include <variant>
-#include <string_view>
 
 #include <stddef.h>
 #include <stdint.h>
@@ -128,10 +126,6 @@ static_assert(MAX_VERTEX_BUFFER_COUNT <= MAX_VERTEX_ATTRIBUTE_COUNT,
 static constexpr size_t CONFIG_UNIFORM_BINDING_COUNT = 9;   // This is guaranteed by OpenGL ES.
 static constexpr size_t CONFIG_SAMPLER_BINDING_COUNT = 4;   // This is guaranteed by OpenGL ES.
 
-static constexpr uint8_t EXTERNAL_SAMPLER_DATA_INDEX_UNUSED =
-        uint8_t(-1);// Case where the descriptor set binding isnt using any external sampler state
-                     // and therefore doesn't have a valid entry.
-
 /**
  * Defines the backend's feature levels.
  */
@@ -160,7 +154,7 @@ enum class TimerQueryResult : int8_t {
     AVAILABLE = 1,  // result is available
 };
 
- constexpr std::string_view to_string(Backend const backend) noexcept {
+static constexpr const char* backendToString(Backend backend) {
     switch (backend) {
         case Backend::NOOP:
             return "Noop";
@@ -172,11 +166,9 @@ enum class TimerQueryResult : int8_t {
             return "Metal";
         case Backend::WEBGPU:
             return "WebGPU";
-        case Backend::DEFAULT:
-            return "Default";
-            break;
+        default:
+            return "Unknown";
     }
-    return "Unknown";
 }
 
 /**
@@ -190,10 +182,9 @@ enum class ShaderLanguage {
     SPIRV = 2,
     MSL = 3,
     METAL_LIBRARY = 4,
-    WGSL = 5,
 };
 
-constexpr const char* shaderLanguageToString(ShaderLanguage shaderLanguage) noexcept {
+static constexpr const char* shaderLanguageToString(ShaderLanguage shaderLanguage) {
     switch (shaderLanguage) {
         case ShaderLanguage::ESSL1:
             return "ESSL 1.0";
@@ -205,10 +196,7 @@ constexpr const char* shaderLanguageToString(ShaderLanguage shaderLanguage) noex
             return "MSL";
         case ShaderLanguage::METAL_LIBRARY:
             return "Metal precompiled library";
-        case ShaderLanguage::WGSL:
-            return "WGSL";
     }
-    return "UNKNOWN";
 }
 
 enum class ShaderStage : uint8_t {
@@ -226,7 +214,7 @@ enum class ShaderStageFlags : uint8_t {
     ALL_SHADER_STAGE_FLAGS = VERTEX | FRAGMENT | COMPUTE
 };
 
- constexpr bool hasShaderType(ShaderStageFlags flags, ShaderStage type) noexcept {
+static inline constexpr bool hasShaderType(ShaderStageFlags flags, ShaderStage type) noexcept {
     switch (type) {
         case ShaderStage::VERTEX:
             return bool(uint8_t(flags) & uint8_t(ShaderStageFlags::VERTEX));
@@ -237,114 +225,14 @@ enum class ShaderStageFlags : uint8_t {
     }
 }
 
-enum class TextureType : uint8_t {
-    FLOAT,
-    INT,
-    UINT,
-    DEPTH,
-    STENCIL,
-    DEPTH_STENCIL
+enum class DescriptorType : uint8_t {
+    UNIFORM_BUFFER,
+    SHADER_STORAGE_BUFFER,
+    SAMPLER,
+    INPUT_ATTACHMENT,
+    SAMPLER_EXTERNAL
 };
 
- constexpr std::string_view to_string(TextureType type) noexcept {
-    switch (type) {
-        case TextureType::FLOAT:            return "FLOAT";
-        case TextureType::INT:              return "INT";
-        case TextureType::UINT:             return "UINT";
-        case TextureType::DEPTH:            return "DEPTH";
-        case TextureType::STENCIL:          return "STENCIL";
-        case TextureType::DEPTH_STENCIL:    return "DEPTH_STENCIL";
-    }
-    return "UNKNOWN";
-}
-
- enum class DescriptorType : uint8_t {
-     SAMPLER_2D_FLOAT,
-     SAMPLER_2D_INT,
-     SAMPLER_2D_UINT,
-     SAMPLER_2D_DEPTH,
-
-     SAMPLER_2D_ARRAY_FLOAT,
-     SAMPLER_2D_ARRAY_INT,
-     SAMPLER_2D_ARRAY_UINT,
-     SAMPLER_2D_ARRAY_DEPTH,
-
-     SAMPLER_CUBE_FLOAT,
-     SAMPLER_CUBE_INT,
-     SAMPLER_CUBE_UINT,
-     SAMPLER_CUBE_DEPTH,
-
-     SAMPLER_CUBE_ARRAY_FLOAT,
-     SAMPLER_CUBE_ARRAY_INT,
-     SAMPLER_CUBE_ARRAY_UINT,
-     SAMPLER_CUBE_ARRAY_DEPTH,
-
-     SAMPLER_3D_FLOAT,
-     SAMPLER_3D_INT,
-     SAMPLER_3D_UINT,
-
-     SAMPLER_EXTERNAL,
-     UNIFORM_BUFFER,
-     SHADER_STORAGE_BUFFER,
-     INPUT_ATTACHMENT,
- };
-
- constexpr bool isDepthDescriptor(DescriptorType const type) noexcept {
-     switch (type) {
-         case DescriptorType::SAMPLER_2D_DEPTH:
-         case DescriptorType::SAMPLER_2D_ARRAY_DEPTH:
-         case DescriptorType::SAMPLER_CUBE_DEPTH:
-         case DescriptorType::SAMPLER_CUBE_ARRAY_DEPTH:
-             return true;
-         default: ;
-     }
-     return false;
- }
-
- constexpr bool isFloatDescriptor(DescriptorType const type) noexcept {
-     switch (type) {
-         case DescriptorType::SAMPLER_2D_FLOAT:
-         case DescriptorType::SAMPLER_2D_ARRAY_FLOAT:
-         case DescriptorType::SAMPLER_CUBE_FLOAT:
-         case DescriptorType::SAMPLER_CUBE_ARRAY_FLOAT:
-         case DescriptorType::SAMPLER_3D_FLOAT:
-             return true;
-         default: ;
-     }
-     return false;
- }
-
-constexpr std::string_view to_string(DescriptorType type) noexcept {
-    #define DESCRIPTOR_TYPE_CASE(TYPE)  case DescriptorType::TYPE: return #TYPE;
-    switch (type) {
-        DESCRIPTOR_TYPE_CASE(SAMPLER_2D_FLOAT)
-        DESCRIPTOR_TYPE_CASE(SAMPLER_2D_INT)
-        DESCRIPTOR_TYPE_CASE(SAMPLER_2D_UINT)
-        DESCRIPTOR_TYPE_CASE(SAMPLER_2D_DEPTH)
-        DESCRIPTOR_TYPE_CASE(SAMPLER_2D_ARRAY_FLOAT)
-        DESCRIPTOR_TYPE_CASE(SAMPLER_2D_ARRAY_INT)
-        DESCRIPTOR_TYPE_CASE(SAMPLER_2D_ARRAY_UINT)
-        DESCRIPTOR_TYPE_CASE(SAMPLER_2D_ARRAY_DEPTH)
-        DESCRIPTOR_TYPE_CASE(SAMPLER_CUBE_FLOAT)
-        DESCRIPTOR_TYPE_CASE(SAMPLER_CUBE_INT)
-        DESCRIPTOR_TYPE_CASE(SAMPLER_CUBE_UINT)
-        DESCRIPTOR_TYPE_CASE(SAMPLER_CUBE_DEPTH)
-        DESCRIPTOR_TYPE_CASE(SAMPLER_CUBE_ARRAY_FLOAT)
-        DESCRIPTOR_TYPE_CASE(SAMPLER_CUBE_ARRAY_INT)
-        DESCRIPTOR_TYPE_CASE(SAMPLER_CUBE_ARRAY_UINT)
-        DESCRIPTOR_TYPE_CASE(SAMPLER_CUBE_ARRAY_DEPTH)
-        DESCRIPTOR_TYPE_CASE(SAMPLER_3D_FLOAT)
-        DESCRIPTOR_TYPE_CASE(SAMPLER_3D_INT)
-        DESCRIPTOR_TYPE_CASE(SAMPLER_3D_UINT)
-        DESCRIPTOR_TYPE_CASE(SAMPLER_EXTERNAL)
-        DESCRIPTOR_TYPE_CASE(UNIFORM_BUFFER)
-        DESCRIPTOR_TYPE_CASE(SHADER_STORAGE_BUFFER)
-        DESCRIPTOR_TYPE_CASE(INPUT_ATTACHMENT)
-    }
-    return "UNKNOWN";
-    #undef DESCRIPTOR_TYPE_CASE
-}
-
 enum class DescriptorFlags : uint8_t {
     NONE = 0x00,
     DYNAMIC_OFFSET = 0x01
@@ -355,34 +243,27 @@ using descriptor_set_t = uint8_t;
 using descriptor_binding_t = uint8_t;
 
 struct DescriptorSetLayoutBinding {
-    static bool isSampler(DescriptorType type) noexcept {
-        return int(type) <= int(DescriptorType::SAMPLER_EXTERNAL);
-    }
-    static bool isBuffer(DescriptorType type) noexcept {
-        return type == DescriptorType::UNIFORM_BUFFER ||
-               type == DescriptorType::SHADER_STORAGE_BUFFER;
-    }
     DescriptorType type;
     ShaderStageFlags stageFlags;
     descriptor_binding_t binding;
     DescriptorFlags flags = DescriptorFlags::NONE;
     uint16_t count = 0;
 
-    //  TODO: uncomment when needed.  Note that this class is used as hash key.  We need to ensure
-    //  no uninitialized padding bytes.
-    //    uint8_t externalSamplerDataIndex = EXTERNAL_SAMPLER_DATA_INDEX_UNUSED;
-
-    friend bool operator==(DescriptorSetLayoutBinding const& lhs,
+    friend inline bool operator==(
+            DescriptorSetLayoutBinding const& lhs,
             DescriptorSetLayoutBinding const& rhs) noexcept {
         return lhs.type == rhs.type &&
                lhs.flags == rhs.flags &&
                lhs.count == rhs.count &&
                lhs.stageFlags == rhs.stageFlags;
-//               lhs.stageFlags == rhs.stageFlags &&
-//               lhs.externalSamplerDataIndex == rhs.externalSamplerDataIndex;
     }
 };
 
+struct DescriptorSetLayout {
+    utils::FixedCapacityVector<DescriptorSetLayoutBinding> bindings;
+};
+
+
 /**
  * Bitmask for selecting render buffers
  */
@@ -405,7 +286,7 @@ enum class TargetBufferFlags : uint32_t {
     ALL = COLOR_ALL | DEPTH | STENCIL       //!< Color, depth and stencil buffer selected.
 };
 
- constexpr TargetBufferFlags getTargetBufferFlagsAt(size_t index) noexcept {
+inline constexpr TargetBufferFlags getTargetBufferFlagsAt(size_t index) noexcept {
     if (index == 0u) return TargetBufferFlags::COLOR0;
     if (index == 1u) return TargetBufferFlags::COLOR1;
     if (index == 2u) return TargetBufferFlags::COLOR2;
@@ -562,24 +443,6 @@ enum class SamplerType : uint8_t {
     SAMPLER_CUBEMAP_ARRAY,  //!< Cube map array texture (feature level 2)
 };
 
-constexpr std::string_view to_string(SamplerType const type) noexcept {
-    switch (type) {
-        case SamplerType::SAMPLER_2D:
-            return "SAMPLER_2D";
-        case SamplerType::SAMPLER_2D_ARRAY:
-            return "SAMPLER_2D_ARRAY";
-        case SamplerType::SAMPLER_CUBEMAP:
-            return "SAMPLER_CUBEMAP";
-        case SamplerType::SAMPLER_EXTERNAL:
-            return "SAMPLER_EXTERNAL";
-        case SamplerType::SAMPLER_3D:
-            return "SAMPLER_3D";
-        case SamplerType::SAMPLER_CUBEMAP_ARRAY:
-            return "SAMPLER_CUBEMAP_ARRAY";
-    }
-    return "Unknown";
-}
-
 //! Subpass type
 enum class SubpassType : uint8_t {
     SUBPASS_INPUT
@@ -593,20 +456,6 @@ enum class SamplerFormat : uint8_t {
     SHADOW = 3      //!< shadow sampler (PCF)
 };
 
-constexpr std::string_view to_string(SamplerFormat const format) noexcept {
-    switch (format) {
-        case SamplerFormat::INT:
-            return "INT";
-        case SamplerFormat::UINT:
-            return "UINT";
-        case SamplerFormat::FLOAT:
-            return "FLOAT";
-        case SamplerFormat::SHADOW:
-            return "SHADOW";
-    }
-    return "Unknown";
-}
-
 /**
  * Supported element types
  */
@@ -907,8 +756,6 @@ enum class TextureFormat : uint16_t {
     SRGB_ALPHA_BPTC_UNORM,  // BC7 sRGB
 };
 
-TextureType getTextureType(TextureFormat format) noexcept;
-
 //! Bitmask describing the intended Texture Usage
 enum class TextureUsage : uint16_t {
     NONE                = 0x0000,
@@ -936,7 +783,7 @@ enum class TextureSwizzle : uint8_t {
 };
 
 //! returns whether this format a depth format
- constexpr bool isDepthFormat(TextureFormat format) noexcept {
+static constexpr bool isDepthFormat(TextureFormat format) noexcept {
     switch (format) {
         case TextureFormat::DEPTH32F:
         case TextureFormat::DEPTH24:
@@ -949,7 +796,7 @@ enum class TextureSwizzle : uint8_t {
     }
 }
 
- constexpr bool isStencilFormat(TextureFormat format) noexcept {
+static constexpr bool isStencilFormat(TextureFormat format) noexcept {
     switch (format) {
         case TextureFormat::STENCIL8:
         case TextureFormat::DEPTH24_STENCIL8:
@@ -960,34 +807,7 @@ enum class TextureSwizzle : uint8_t {
     }
 }
 
- constexpr bool isColorFormat(TextureFormat format) noexcept {
-    switch (format) {
-        // Standard color formats
-        case TextureFormat::R8:
-        case TextureFormat::RG8:
-        case TextureFormat::RGBA8:
-        case TextureFormat::R16F:
-        case TextureFormat::RG16F:
-        case TextureFormat::RGBA16F:
-        case TextureFormat::R32F:
-        case TextureFormat::RG32F:
-        case TextureFormat::RGBA32F:
-        case TextureFormat::RGB10_A2:
-        case TextureFormat::R11F_G11F_B10F:
-        case TextureFormat::SRGB8:
-        case TextureFormat::SRGB8_A8:
-        case TextureFormat::RGB8:
-        case TextureFormat::RGB565:
-        case TextureFormat::RGB5_A1:
-        case TextureFormat::RGBA4:
-            return true;
-        default:
-            break;
-    }
-    return false;
-}
-
- constexpr bool isUnsignedIntFormat(TextureFormat format) {
+static constexpr bool isUnsignedIntFormat(TextureFormat format) {
     switch (format) {
         case TextureFormat::R8UI:
         case TextureFormat::R16UI:
@@ -1008,7 +828,7 @@ enum class TextureSwizzle : uint8_t {
     }
 }
 
- constexpr bool isSignedIntFormat(TextureFormat format) {
+static constexpr bool isSignedIntFormat(TextureFormat format) {
     switch (format) {
         case TextureFormat::R8I:
         case TextureFormat::R16I:
@@ -1030,35 +850,35 @@ enum class TextureSwizzle : uint8_t {
 }
 
 //! returns whether this format is a compressed format
- constexpr bool isCompressedFormat(TextureFormat format) noexcept {
+static constexpr bool isCompressedFormat(TextureFormat format) noexcept {
     return format >= TextureFormat::EAC_R11;
 }
 
 //! returns whether this format is an ETC2 compressed format
- constexpr bool isETC2Compression(TextureFormat format) noexcept {
+static constexpr bool isETC2Compression(TextureFormat format) noexcept {
     return format >= TextureFormat::EAC_R11 && format <= TextureFormat::ETC2_EAC_SRGBA8;
 }
 
 //! returns whether this format is an S3TC compressed format
- constexpr bool isS3TCCompression(TextureFormat format) noexcept {
+static constexpr bool isS3TCCompression(TextureFormat format) noexcept {
     return format >= TextureFormat::DXT1_RGB && format <= TextureFormat::DXT5_SRGBA;
 }
 
- constexpr bool isS3TCSRGBCompression(TextureFormat format) noexcept {
+static constexpr bool isS3TCSRGBCompression(TextureFormat format) noexcept {
     return format >= TextureFormat::DXT1_SRGB && format <= TextureFormat::DXT5_SRGBA;
 }
 
 //! returns whether this format is an RGTC compressed format
- constexpr bool isRGTCCompression(TextureFormat format) noexcept {
+static constexpr bool isRGTCCompression(TextureFormat format) noexcept {
     return format >= TextureFormat::RED_RGTC1 && format <= TextureFormat::SIGNED_RED_GREEN_RGTC2;
 }
 
 //! returns whether this format is an BPTC compressed format
-constexpr bool isBPTCCompression(TextureFormat format) noexcept {
+static constexpr bool isBPTCCompression(TextureFormat format) noexcept {
     return format >= TextureFormat::RGB_BPTC_SIGNED_FLOAT && format <= TextureFormat::SRGB_ALPHA_BPTC_UNORM;
 }
 
-constexpr bool isASTCCompression(TextureFormat format) noexcept {
+static constexpr bool isASTCCompression(TextureFormat format) noexcept {
     return format >= TextureFormat::RGBA_ASTC_4x4 && format <= TextureFormat::SRGB8_ALPHA8_ASTC_12x12;
 }
 
@@ -1118,28 +938,8 @@ enum class SamplerCompareFunc : uint8_t {
     N           //!< Never. The depth / stencil test always fails.
 };
 
-//! this API is copied from (and only applies to) the Vulkan spec.
-//! These specify YUV to RGB conversions.
-enum class SamplerYcbcrModelConversion : uint8_t {
-    RGB_IDENTITY = 0,
-    YCBCR_IDENTITY = 1,
-    YCBCR_709 = 2,
-    YCBCR_601 = 3,
-    YCBCR_2020 = 4,
-};
-
-enum class SamplerYcbcrRange : uint8_t {
-    ITU_FULL = 0,
-    ITU_NARROW = 1,
-};
-
-enum class ChromaLocation : uint8_t {
-    COSITED_EVEN = 0,
-    MIDPOINT = 1,
-};
-
 //! Sampler parameters
-struct SamplerParams {             // NOLINT
+struct SamplerParams { // NOLINT
     SamplerMagFilter filterMag      : 1;    //!< magnification filter (NEAREST)
     SamplerMinFilter filterMin      : 3;    //!< minification filter  (NEAREST)
     SamplerWrapMode wrapS           : 2;    //!< s-coordinate wrap mode (CLAMP_TO_EDGE)
@@ -1183,22 +983,17 @@ struct SamplerParams {             // NOLINT
         }
     };
 
-    bool isFiltered() const noexcept {
-        return filterMag != SamplerMagFilter::NEAREST || filterMin != SamplerMinFilter::NEAREST;
-    }
-
 private:
-    friend bool operator == (SamplerParams lhs, SamplerParams rhs) noexcept {
-        return EqualTo{}(lhs, rhs);
+    friend inline bool operator == (SamplerParams lhs, SamplerParams rhs) noexcept {
+        return SamplerParams::EqualTo{}(lhs, rhs);
     }
-    friend bool operator != (SamplerParams lhs, SamplerParams rhs) noexcept {
-        return  !EqualTo{}(lhs, rhs);
+    friend inline bool operator != (SamplerParams lhs, SamplerParams rhs) noexcept {
+        return  !SamplerParams::EqualTo{}(lhs, rhs);
     }
-    friend bool operator < (SamplerParams lhs, SamplerParams rhs) noexcept {
-        return LessThan{}(lhs, rhs);
+    friend inline bool operator < (SamplerParams lhs, SamplerParams rhs) noexcept {
+        return SamplerParams::LessThan{}(lhs, rhs);
     }
 };
-
 static_assert(sizeof(SamplerParams) == 4);
 
 // The limitation to 64-bits max comes from how we store a SamplerParams in our JNI code
@@ -1206,96 +1001,6 @@ static_assert(sizeof(SamplerParams) == 4);
 static_assert(sizeof(SamplerParams) <= sizeof(uint64_t),
         "SamplerParams must be no more than 64 bits");
 
-//! Sampler parameters
-struct SamplerYcbcrConversion {// NOLINT
-    SamplerYcbcrModelConversion ycbcrModel : 4;
-    TextureSwizzle r : 4;
-    TextureSwizzle g : 4;
-    TextureSwizzle b : 4;
-    TextureSwizzle a : 4;
-    SamplerYcbcrRange ycbcrRange : 1;
-    ChromaLocation xChromaOffset : 1;
-    ChromaLocation yChromaOffset : 1;
-    SamplerMagFilter chromaFilter : 1;
-    uint8_t padding;
-
-    struct Hasher {
-        size_t operator()(const SamplerYcbcrConversion p) const noexcept {
-            // we don't use std::hash<> here, so we don't have to include <functional>
-            return *reinterpret_cast<uint32_t const*>(reinterpret_cast<char const*>(&p));
-        }
-    };
-
-    struct EqualTo {
-        bool operator()(SamplerYcbcrConversion lhs, SamplerYcbcrConversion rhs) const noexcept {
-            assert_invariant(lhs.padding == 0);
-            auto* pLhs = reinterpret_cast<uint32_t const*>(reinterpret_cast<char const*>(&lhs));
-            auto* pRhs = reinterpret_cast<uint32_t const*>(reinterpret_cast<char const*>(&rhs));
-            return *pLhs == *pRhs;
-        }
-    };
-
-    struct LessThan {
-        bool operator()(SamplerYcbcrConversion lhs, SamplerYcbcrConversion rhs) const noexcept {
-            assert_invariant(lhs.padding == 0);
-            auto* pLhs = reinterpret_cast<uint32_t const*>(reinterpret_cast<char const*>(&lhs));
-            auto* pRhs = reinterpret_cast<uint32_t const*>(reinterpret_cast<char const*>(&rhs));
-            return *pLhs < *pRhs;
-        }
-    };
-
-private:
-    friend bool operator == (SamplerYcbcrConversion lhs, SamplerYcbcrConversion rhs)
-            noexcept {
-        return SamplerYcbcrConversion::EqualTo{}(lhs, rhs);
-    }
-    friend bool operator != (SamplerYcbcrConversion lhs, SamplerYcbcrConversion rhs)
-            noexcept {
-        return  !SamplerYcbcrConversion::EqualTo{}(lhs, rhs);
-    }
-    friend bool operator < (SamplerYcbcrConversion lhs, SamplerYcbcrConversion rhs)
-            noexcept {
-        return SamplerYcbcrConversion::LessThan{}(lhs, rhs);
-    }
-};
-
-static_assert(sizeof(SamplerYcbcrConversion) == 4);
-
-static_assert(sizeof(SamplerYcbcrConversion) <= sizeof(uint64_t),
-        "SamplerYcbcrConversion must be no more than 64 bits");
-
-struct ExternalSamplerDatum {
-    ExternalSamplerDatum(SamplerYcbcrConversion ycbcr, SamplerParams spm, uint32_t extFmt)
-        : YcbcrConversion(ycbcr),
-          samplerParams(spm),
-          externalFormat(extFmt) {}
-    bool operator==(ExternalSamplerDatum const& rhs) const {
-        return (YcbcrConversion == rhs.YcbcrConversion && samplerParams == rhs.samplerParams &&
-                externalFormat == rhs.externalFormat);
-    }
-    struct EqualTo {
-        bool operator()(const ExternalSamplerDatum& lhs,
-                const ExternalSamplerDatum& rhs) const noexcept {
-            return (lhs.YcbcrConversion == rhs.YcbcrConversion &&
-                lhs.samplerParams == rhs.samplerParams &&
-                lhs.externalFormat == rhs.externalFormat);
-        }
-    };
-    SamplerYcbcrConversion YcbcrConversion;
-    SamplerParams samplerParams;
-    uint32_t externalFormat;
-};
-// No implicit padding allowed due to it being a hash key.
-static_assert(sizeof(ExternalSamplerDatum) == 12);
-
-struct DescriptorSetLayout {
-    std::variant<utils::StaticString, utils::CString, std::monostate> label;
-    utils::FixedCapacityVector<DescriptorSetLayoutBinding> bindings;
-
-//  TODO: uncomment when needed
-//    utils::FixedCapacityVector<ExternalSamplerDatum> externalSamplerData;
-};
-
 //! blending equation function
 enum class BlendEquation : uint8_t {
     ADD,                    //!< the fragment is added to the color buffer
@@ -1606,11 +1311,6 @@ enum class Workaround : uint16_t {
     DISABLE_BLIT_INTO_TEXTURE_ARRAY,
     // Multiple workarounds needed for PowerVR GPUs
     POWER_VR_SHADER_WORKAROUNDS,
-    // Some browsers, such as Firefox on Mac, struggle with slow shader compile/link times when
-    // creating programs for the default material, leading to startup stutters. This workaround
-    // prevents these stutters by not precaching depth variants of the default material for those
-    // particular browsers.
-    DISABLE_DEPTH_PRECACHE_FOR_DEFAULT_MATERIAL,
 };
 
 using StereoscopicType = backend::Platform::StereoscopicType;

filament/backend/include/backend/Program.h

@@ -44,8 +44,8 @@ public:
 
     struct Descriptor {
         utils::CString name;
-        DescriptorType type;
-        descriptor_binding_t binding;
+        backend::DescriptorType type;
+        backend::descriptor_binding_t binding;
     };
 
     struct SpecializationConstant {

filament/backend/include/backend/platforms/PlatformCocoaGL.h

@@ -33,7 +33,7 @@ public:
     PlatformCocoaGL();
     ~PlatformCocoaGL() noexcept override;
 
-    ExternalImageHandle UTILS_PUBLIC createExternalImage(void* cvPixelBuffer) noexcept;
+    ExternalImageHandle createExternalImage(void* cvPixelBuffer) noexcept;
 
 protected:
     // --------------------------------------------------------------------------------------------

filament/backend/include/backend/platforms/PlatformCocoaTouchGL.h

@@ -32,7 +32,7 @@ public:
     PlatformCocoaTouchGL();
     ~PlatformCocoaTouchGL() noexcept override;
 
-    ExternalImageHandle UTILS_PUBLIC createExternalImage(void* cvPixelBuffer) noexcept;
+    ExternalImageHandle createExternalImage(void* cvPixelBuffer) noexcept;
 
     // --------------------------------------------------------------------------------------------
     // Platform Interface

filament/backend/include/backend/platforms/PlatformEGL.h

@@ -50,7 +50,7 @@ public:
     /**
      * Creates an ExternalImage from a EGLImageKHR
      */
-    ExternalImageHandle UTILS_PUBLIC createExternalImage(EGLImageKHR eglImage) noexcept;
+    ExternalImageHandle createExternalImage(EGLImageKHR eglImage) noexcept;
 
 protected:
     // --------------------------------------------------------------------------------------------

filament/backend/include/backend/platforms/PlatformEGLAndroid.h

@@ -23,7 +23,6 @@
 #include <backend/platforms/PlatformEGL.h>
 
 #include <utils/android/PerformanceHintManager.h>
-#include <utils/compiler.h>
 
 #include <chrono>
 
@@ -44,21 +43,8 @@ public:
     PlatformEGLAndroid() noexcept;
     ~PlatformEGLAndroid() noexcept override;
 
-    /**
-     * Creates an ExternalImage from a EGLImageKHR
-     */
-    ExternalImageHandle UTILS_PUBLIC createExternalImage(AHardwareBuffer const* buffer, bool sRGB) noexcept;
-
-    struct UTILS_PUBLIC ExternalImageDescAndroid {
-        uint32_t width;      // Texture width
-        uint32_t height;     // Texture height
-        TextureFormat format;// Texture format
-        TextureUsage usage;  // Texture usage flags
-    };
-
-    ExternalImageDescAndroid UTILS_PUBLIC getExternalImageDesc(ExternalImageHandle externalImage) noexcept;
-
 protected:
+
     // --------------------------------------------------------------------------------------------
     // Platform Interface
 
@@ -71,6 +57,11 @@ protected:
     Driver* createDriver(void* sharedContext,
             const Platform::DriverConfig& driverConfig) noexcept override;
 
+    /**
+     * Creates an ExternalImage from a EGLImageKHR
+     */
+    ExternalImageHandle createExternalImage(AHardwareBuffer const *buffer, bool sRGB) noexcept;
+
     // --------------------------------------------------------------------------------------------
     // OpenGLPlatform Interface
 
@@ -104,26 +95,15 @@ protected:
      */
     AcquiredImage transformAcquiredImage(AcquiredImage source) noexcept override;
 
-    OpenGLPlatform::ExternalTexture* createExternalImageTexture() noexcept override;
-    void destroyExternalImageTexture(ExternalTexture* texture) noexcept override;
+    bool setExternalImage(ExternalImageHandleRef externalImage, ExternalTexture* texture) noexcept override;
 
     struct ExternalImageEGLAndroid : public ExternalImageEGL {
         AHardwareBuffer* aHardwareBuffer = nullptr;
-        uint32_t width;      // Texture width
-        uint32_t height;     // Texture height
-        TextureFormat format;// Texture format
-        TextureUsage usage;  // Texture usage flags
         bool sRGB = false;
-
     protected:
         ~ExternalImageEGLAndroid() override;
     };
 
-    bool setExternalImage(ExternalImageHandleRef externalImage,
-            ExternalTexture* texture) noexcept override;
-    bool setImage(ExternalImageEGLAndroid const* eglExternalImage,
-            ExternalTexture* texture) noexcept;
-
 protected:
     bool makeCurrent(ContextType type,
             SwapChain* drawSwapChain,

filament/backend/include/backend/platforms/PlatformOSMesa.h

@@ -21,12 +21,7 @@
 
 #include "bluegl/BlueGL.h"
 
-#if defined(__linux__)
 #include <osmesa.h>
-#elif defined(__APPLE__)
-#undef GLAPI
-#include <GL/osmesa.h>
-#endif
 
 #include <backend/platforms/OpenGLPlatform.h>
 #include <backend/DriverEnums.h>

filament/backend/include/backend/platforms/VulkanPlatform.h

@@ -18,7 +18,6 @@
 #define TNT_FILAMENT_BACKEND_PLATFORMS_VULKANPLATFORM_H
 
 #include <backend/Platform.h>
-#include <backend/DriverEnums.h>
 
 #include <bluevk/BlueVK.h>
 
@@ -104,6 +103,10 @@ public:
 
         // Semaphore to be signaled once the image is available.
         VkSemaphore imageReadySemaphore = VK_NULL_HANDLE;
+
+        // A function called right before vkQueueSubmit. After this call, the image must be 
+        // available. This pointer can be null if imageReadySemaphore is not VK_NULL_HANDLE.
+        std::function<void(SwapChainPtr handle)> explicitImageReadyWait = nullptr;
     };
 
     VulkanPlatform();
@@ -294,16 +297,6 @@ public:
     VkQueue getProtectedGraphicsQueue() const noexcept;
 
     struct ExternalImageMetadata {
-        /**
-         * The Filament texture format.
-         */
-        TextureFormat filamentFormat;
-
-        /**
-         * The Filament texture usage.
-         */
-        TextureUsage filamentUsage;
-
         /**
          * The width of the external image
          */
@@ -314,21 +307,26 @@ public:
          */
         uint32_t height;
 
+        /**
+         * The layerCount of the external image
+         */
+        uint32_t layerCount;
+
         /**
          * The layer count of the external image
          */
         uint32_t layers;
 
-        /**
-         * The numbers of samples per texel
-         */
-        VkSampleCountFlagBits samples;
-
         /**
          * The format of the external image
          */
         VkFormat format;
 
+        /**
+         * An external buffer can be protected. This tells you if it is.
+         */
+        bool isProtected;
+
         /**
          * The type of external format (opaque int) if used.
          */
@@ -348,75 +346,23 @@ public:
          * Heap information
          */
         uint32_t memoryTypeBits;
-
-        /**
-         * Ycbcr conversion components
-         */
-        VkComponentMapping ycbcrConversionComponents;
-
-        /**
-         * Ycbcr model
-         */
-        VkSamplerYcbcrModelConversion ycbcrModel;
-
-        /**
-         * Ycbcr range
-         */
-        VkSamplerYcbcrRange ycbcrRange;
-
-        /**
-         * Ycbcr x chroma offset
-         */
-        VkChromaLocation xChromaOffset;
-
-        /**
-         * Ycbcr y chroma offset
-         */
-        VkChromaLocation yChromaOffset;
     };
+    virtual ExternalImageMetadata getExternalImageMetadata(void* externalImage);
 
-
-    // Note that the image metadata might change per-frame, hence we need a method for extracting
-    // it.
-    virtual ExternalImageMetadata extractExternalImageMetadata(ExternalImageHandleRef image) const {
-        return {};
-    }
-
-    struct ImageData {
-        struct Bundle {
-            VkImage image = VK_NULL_HANDLE;
-            VkDeviceMemory memory = VK_NULL_HANDLE;
-
-            inline bool valid() const noexcept {
-                return image != VK_NULL_HANDLE;
-            }
-        };
-        // It's possible for the external image to also have a known VK format. We need to create an
-        // image for that in case we are not looking to use an external "sampler" with this image.
-        Bundle internal;
-
-        // If we get a externalFormat in the metadata, then we should create an image with
-        // VK_FORMAT_UNDEFINED
-        Bundle external;
-    };
-
-    virtual ImageData createVkImageFromExternal(ExternalImageHandleRef image) const {
-        return {};
-    }
-
-protected:
-    virtual ExtensionSet getSwapchainInstanceExtensions() const;
-
-    using SurfaceBundle = std::tuple<VkSurfaceKHR, VkExtent2D>;
-    virtual SurfaceBundle createVkSurfaceKHR(void* nativeWindow, VkInstance instance,
-            uint64_t flags) const noexcept;
+    using ImageData = std::pair<VkImage, VkDeviceMemory>;
+    virtual ImageData createExternalImage(void* externalImage,
+            const ExternalImageMetadata& metadata);
 
 private:
-    // Platform dependent helper methods
-    static ExtensionSet getSwapchainInstanceExtensionsImpl();
+    static ExtensionSet getSwapchainInstanceExtensions();
+    static ExternalImageMetadata getExternalImageMetadataImpl(void* externalImage,
+            VkDevice device);
+    static ImageData createExternalImageImpl(void* externalImage, VkDevice device,
+            const VkAllocationCallbacks* allocator, const ExternalImageMetadata& metadata);
 
     // Platform dependent helper methods
-    static SurfaceBundle createVkSurfaceKHRImpl(void* nativeWindow, VkInstance instance,
+    using SurfaceBundle = std::tuple<VkSurfaceKHR, VkExtent2D>;
+    static SurfaceBundle createVkSurfaceKHR(void* nativeWindow, VkInstance instance,
             uint64_t flags) noexcept;
 
     friend struct VulkanPlatformPrivate;

filament/backend/include/backend/platforms/VulkanPlatformAndroid.h

@@ -1,66 +0,0 @@
-/*
- * Copyright (C) 2025 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef TNT_FILAMENT_BACKEND_PLATFORMS_VULKAN_PLATFORM_ANDROID_H
-#define TNT_FILAMENT_BACKEND_PLATFORMS_VULKAN_PLATFORM_ANDROID_H
-
-#include <backend/DriverEnums.h>
-#include <backend/platforms/VulkanPlatform.h>
-
-#include <android/hardware_buffer.h>
-
-namespace filament::backend {
-
-class VulkanPlatformAndroid : public VulkanPlatform {
-public:
-    ExternalImageHandle UTILS_PUBLIC createExternalImage(AHardwareBuffer const* buffer,
-            bool sRGB) noexcept;
-
-    struct UTILS_PUBLIC ExternalImageDescAndroid {
-        uint32_t width;      // Texture width
-        uint32_t height;     // Texture height
-        TextureFormat format;// Texture format
-        TextureUsage usage;  // Texture usage flags
-    };
-
-    ExternalImageDescAndroid UTILS_PUBLIC getExternalImageDesc(
-            ExternalImageHandleRef externalImage) const noexcept;
-
-    virtual ExternalImageMetadata extractExternalImageMetadata(
-            ExternalImageHandleRef image) const override;
-
-    virtual ImageData createVkImageFromExternal(ExternalImageHandleRef image) const override;
-
-protected:
-    virtual ExtensionSet getSwapchainInstanceExtensions() const override;
-
-    using SurfaceBundle = VulkanPlatform::SurfaceBundle;
-    virtual SurfaceBundle createVkSurfaceKHR(void* nativeWindow, VkInstance instance,
-            uint64_t flags) const noexcept override;
-
-private:
-    struct ExternalImageVulkanAndroid : public Platform::ExternalImage {
-        AHardwareBuffer* aHardwareBuffer = nullptr;
-        bool sRGB = false;
-
-    protected:
-        ~ExternalImageVulkanAndroid() override;
-    };
-};
-
-}// namespace filament::backend
-
-#endif// TNT_FILAMENT_BACKEND_PLATFORMS_VULKAN_PLATFORM_ANDROID_H

filament/backend/include/backend/platforms/WebGPUPlatform.h

@@ -1,65 +0,0 @@
-/*
- * Copyright (C) 2025 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef TNT_FILAMENT_BACKEND_PLATFORMS_WEBGPUPLATFORM_H
-#define TNT_FILAMENT_BACKEND_PLATFORMS_WEBGPUPLATFORM_H
-
-#include <backend/Platform.h>
-
-#include <webgpu/webgpu_cpp.h>
-
-#include <cstdint>
-
-namespace filament::backend {
-
-/**
- * A Platform interface, handling the environment-specific concerns, e.g. OS, for creating a WebGPU
- * driver (backend).
- */
-class WebGPUPlatform final : public Platform {
-public:
-    WebGPUPlatform();
-    ~WebGPUPlatform() override = default;
-
-    [[nodiscard]] int getOSVersion() const noexcept final { return 0; }
-
-    [[nodiscard]] wgpu::Instance& getInstance() noexcept { return mInstance; }
-
-    // TODO consider that this functionality is not WebGPU-specific, and thus could be
-    //      placed in a generic place and even reused across backends. Alternatively,
-    //      a 3rd party library could be considered. However, this was a simple and
-    //      quick change and works for now.
-    // gets the size (height and width) of the surface/window
-    [[nodiscard]] wgpu::Extent2D getSurfaceExtent(void* nativeWindow) const;
-    // either returns a valid surface or panics
-    [[nodiscard]] wgpu::Surface createSurface(void* nativeWindow, uint64_t flags);
-    // either returns a valid adapter or panics
-    [[nodiscard]] wgpu::Adapter requestAdapter(wgpu::Surface const& surface);
-    // either returns a valid device or panics
-    [[nodiscard]] wgpu::Device requestDevice(wgpu::Adapter const& adapter);
-
-protected:
-    [[nodiscard]] Driver* createDriver(void* sharedContext,
-            const Platform::DriverConfig& driverConfig) noexcept override;
-
-private:
-    // we may consider having the driver own this in the future
-    wgpu::Instance mInstance;
-};
-
-}// namespace filament::backend
-
-#endif// TNT_FILAMENT_BACKEND_PLATFORMS_WEBGPUPLATFORM_H

filament/backend/include/private/backend/BackendUtilsAndroid.h

@@ -1,36 +0,0 @@
-/*
- * Copyright (C) 2025 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef TNT_FILAMENT_BACKEND_PRIVATE_BACKENDUTILSANDROID_H
-#define TNT_FILAMENT_BACKEND_PRIVATE_BACKENDUTILSANDROID_H
-
-#include <backend/DriverEnums.h>
-
-namespace filament::backend {
-
-/**
- * Maps AHardwareBuffer format to TextureFormat.
- */
-TextureFormat mapToFilamentFormat(unsigned int format, bool isSrgbTransfer) noexcept;
-
-/**
- * Maps AHardwareBuffer usage to TextureUsage.
- */
-TextureUsage mapToFilamentUsage(unsigned int usage, TextureFormat format) noexcept;
-
-} // namespace filament
-
-#endif // TNT_FILAMENT_BACKEND_PRIVATE_BACKENDUTILSANDROID_H

filament/backend/include/private/backend/DriverAPI.inc

@@ -362,8 +362,6 @@ DECL_DRIVER_API_SYNCHRONOUS_0(bool, isProtectedTexturesSupported)
 DECL_DRIVER_API_SYNCHRONOUS_0(bool, isDepthClampSupported)
 DECL_DRIVER_API_SYNCHRONOUS_0(uint8_t, getMaxDrawBuffers)
 DECL_DRIVER_API_SYNCHRONOUS_0(size_t, getMaxUniformBufferSize)
-DECL_DRIVER_API_SYNCHRONOUS_N(size_t, getMaxTextureSize, backend::SamplerType, target)
-DECL_DRIVER_API_SYNCHRONOUS_0(size_t, getMaxArrayTextureLayers)
 DECL_DRIVER_API_SYNCHRONOUS_0(math::float2, getClipSpaceParams)
 DECL_DRIVER_API_SYNCHRONOUS_N(void, setupExternalImage2, backend::Platform::ExternalImageHandleRef, image)
 DECL_DRIVER_API_SYNCHRONOUS_N(void, setupExternalImage, void*, image)

filament/backend/include/private/backend/HandleAllocator.h

@@ -40,11 +40,9 @@
 #include <stddef.h>
 #include <stdint.h>
 
-#define HandleAllocatorGL   HandleAllocator<32,  96, 184>    // ~4520 / pool / MiB
-#define HandleAllocatorVK   HandleAllocator<64, 160, 312>    // ~1820 / pool / MiB
-#define HandleAllocatorMTL  HandleAllocator<32,  64, 552>    // ~1660 / pool / MiB
-// TODO WebGPU examine right size of handles
-#define HandleAllocatorWGPU HandleAllocator<64, 160, 552>    // ~1820 / pool / MiB
+#define HandleAllocatorGL  HandleAllocator<32,  96, 184>    // ~4520 / pool / MiB
+#define HandleAllocatorVK  HandleAllocator<64, 160, 312>    // ~1820 / pool / MiB
+#define HandleAllocatorMTL HandleAllocator<32,  64, 552>    // ~1660 / pool / MiB
 
 namespace filament::backend {
 

filament/backend/src/BackendUtils.cpp

@@ -18,8 +18,6 @@
 
 #include "DataReshaper.h"
 
-#include <backend/DriverEnums.h>
-
 #include <utils/CString.h>
 
 #include <string_view>
@@ -225,143 +223,6 @@ size_t getFormatSize(TextureFormat format) noexcept {
     }
 }
 
-TextureType getTextureType(TextureFormat const format) noexcept {
-    switch (format) {
-        case TextureFormat::UNUSED:
-            // should not happen
-            return TextureType::FLOAT;
-
-        case TextureFormat::R8:
-        case TextureFormat::R16F:
-        case TextureFormat::RG8:
-        case TextureFormat::RGB565:
-        case TextureFormat::RGB5_A1:
-        case TextureFormat::RGBA4:
-        case TextureFormat::R32F:
-        case TextureFormat::RGB8:
-        case TextureFormat::SRGB8:
-        case TextureFormat::RG16F:
-        case TextureFormat::R11F_G11F_B10F:
-        case TextureFormat::RGB9_E5:
-        case TextureFormat::RGBA8:
-        case TextureFormat::SRGB8_A8:
-        case TextureFormat::RGB10_A2:
-        case TextureFormat::RGB16F:
-        case TextureFormat::RG32F:
-        case TextureFormat::RGBA16F:
-        case TextureFormat::RGB32F:
-        case TextureFormat::RGBA32F:
-            return TextureType::FLOAT;
-
-        case TextureFormat::R8_SNORM:
-        case TextureFormat::RG8_SNORM:
-        case TextureFormat::RGB8_SNORM:
-        case TextureFormat::RGBA8_SNORM:
-            // SNORM are treated as float
-            return TextureType::FLOAT;
-
-        case TextureFormat::R8UI:
-        case TextureFormat::R16UI:
-        case TextureFormat::RG8UI:
-        case TextureFormat::RGB8UI:
-        case TextureFormat::R32UI:
-        case TextureFormat::RG16UI:
-        case TextureFormat::RGBA8UI:
-        case TextureFormat::RGB16UI:
-        case TextureFormat::RG32UI:
-        case TextureFormat::RGBA16UI:
-        case TextureFormat::RGB32UI:
-        case TextureFormat::RGBA32UI:
-            return TextureType::UINT;
-
-        case TextureFormat::R8I:
-        case TextureFormat::R16I:
-        case TextureFormat::RG8I:
-        case TextureFormat::RGB8I:
-        case TextureFormat::R32I:
-        case TextureFormat::RG16I:
-        case TextureFormat::RGBA8I:
-        case TextureFormat::RGB16I:
-        case TextureFormat::RG32I:
-        case TextureFormat::RGBA16I:
-        case TextureFormat::RGB32I:
-        case TextureFormat::RGBA32I:
-            return TextureType::INT;
-
-        case TextureFormat::DEPTH16:
-        case TextureFormat::DEPTH24:
-        case TextureFormat::DEPTH32F:
-            return TextureType::DEPTH;
-
-        case TextureFormat::STENCIL8:
-            return TextureType::STENCIL;
-
-        case TextureFormat::DEPTH24_STENCIL8:
-        case TextureFormat::DEPTH32F_STENCIL8:
-            return TextureType::DEPTH_STENCIL;
-
-        // Compressed formats ---------------------------------------------------------------------
-
-        case TextureFormat::EAC_RG11:
-        case TextureFormat::EAC_RG11_SIGNED:
-        case TextureFormat::ETC2_EAC_RGBA8:
-        case TextureFormat::ETC2_EAC_SRGBA8:
-        case TextureFormat::EAC_R11:
-        case TextureFormat::EAC_R11_SIGNED:
-        case TextureFormat::ETC2_RGB8:
-        case TextureFormat::ETC2_SRGB8:
-        case TextureFormat::ETC2_RGB8_A1:
-        case TextureFormat::ETC2_SRGB8_A1:
-        case TextureFormat::DXT1_RGB:
-        case TextureFormat::DXT1_RGBA:
-        case TextureFormat::DXT1_SRGB:
-        case TextureFormat::DXT1_SRGBA:
-        case TextureFormat::DXT3_RGBA:
-        case TextureFormat::DXT3_SRGBA:
-        case TextureFormat::DXT5_RGBA:
-        case TextureFormat::DXT5_SRGBA:
-        case TextureFormat::RED_RGTC1:
-        case TextureFormat::SIGNED_RED_RGTC1:
-        case TextureFormat::RED_GREEN_RGTC2:
-        case TextureFormat::SIGNED_RED_GREEN_RGTC2:
-        case TextureFormat::RGB_BPTC_SIGNED_FLOAT:
-        case TextureFormat::RGB_BPTC_UNSIGNED_FLOAT:
-        case TextureFormat::RGBA_BPTC_UNORM:
-        case TextureFormat::SRGB_ALPHA_BPTC_UNORM:
-        case TextureFormat::RGBA_ASTC_4x4:
-        case TextureFormat::RGBA_ASTC_5x4:
-        case TextureFormat::RGBA_ASTC_5x5:
-        case TextureFormat::RGBA_ASTC_6x5:
-        case TextureFormat::RGBA_ASTC_6x6:
-        case TextureFormat::RGBA_ASTC_8x5:
-        case TextureFormat::RGBA_ASTC_8x6:
-        case TextureFormat::RGBA_ASTC_8x8:
-        case TextureFormat::RGBA_ASTC_10x5:
-        case TextureFormat::RGBA_ASTC_10x6:
-        case TextureFormat::RGBA_ASTC_10x8:
-        case TextureFormat::RGBA_ASTC_10x10:
-        case TextureFormat::RGBA_ASTC_12x10:
-        case TextureFormat::RGBA_ASTC_12x12:
-        case TextureFormat::SRGB8_ALPHA8_ASTC_4x4:
-        case TextureFormat::SRGB8_ALPHA8_ASTC_5x4:
-        case TextureFormat::SRGB8_ALPHA8_ASTC_5x5:
-        case TextureFormat::SRGB8_ALPHA8_ASTC_6x5:
-        case TextureFormat::SRGB8_ALPHA8_ASTC_6x6:
-        case TextureFormat::SRGB8_ALPHA8_ASTC_8x5:
-        case TextureFormat::SRGB8_ALPHA8_ASTC_8x6:
-        case TextureFormat::SRGB8_ALPHA8_ASTC_8x8:
-        case TextureFormat::SRGB8_ALPHA8_ASTC_10x5:
-        case TextureFormat::SRGB8_ALPHA8_ASTC_10x6:
-        case TextureFormat::SRGB8_ALPHA8_ASTC_10x8:
-        case TextureFormat::SRGB8_ALPHA8_ASTC_10x10:
-        case TextureFormat::SRGB8_ALPHA8_ASTC_12x10:
-        case TextureFormat::SRGB8_ALPHA8_ASTC_12x12:
-            return TextureType::FLOAT;
-    }
-
-    return TextureType::FLOAT;
-}
-
 size_t getFormatComponentCount(TextureFormat format) noexcept {
     switch (format) {
         case TextureFormat::R8:

filament/backend/src/BackendUtilsAndroid.cpp

@@ -1,98 +0,0 @@
-/*
- * Copyright (C) 2025 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "private/backend/BackendUtilsAndroid.h"
-
-#include <android/hardware_buffer.h>
-
-namespace filament::backend {
-
-TextureFormat mapToFilamentFormat(unsigned int format, bool isSrgbTransfer) noexcept {
-    if (isSrgbTransfer) {
-        switch (format) {
-            case AHARDWAREBUFFER_FORMAT_R8G8B8_UNORM:
-                return TextureFormat::SRGB8;
-            default:
-                return TextureFormat::SRGB8_A8;
-        }
-    }
-    switch (format) {
-        case AHARDWAREBUFFER_FORMAT_R8G8B8A8_UNORM:
-        case AHARDWAREBUFFER_FORMAT_R8G8B8X8_UNORM:
-            return TextureFormat::RGBA8;
-        case AHARDWAREBUFFER_FORMAT_R8G8B8_UNORM:
-        case AHARDWAREBUFFER_FORMAT_Y8Cb8Cr8_420:
-            return TextureFormat::RGB8;
-        case AHARDWAREBUFFER_FORMAT_R5G6B5_UNORM:
-            return TextureFormat::RGB565;
-        case AHARDWAREBUFFER_FORMAT_R16G16B16A16_FLOAT:
-            return TextureFormat::RGBA16F;
-        case AHARDWAREBUFFER_FORMAT_R10G10B10A2_UNORM:
-            return TextureFormat::RGB10_A2;
-        case AHARDWAREBUFFER_FORMAT_D16_UNORM:
-            return TextureFormat::DEPTH16;
-        case AHARDWAREBUFFER_FORMAT_D24_UNORM:
-            return TextureFormat::DEPTH24;
-        case AHARDWAREBUFFER_FORMAT_D24_UNORM_S8_UINT:
-            return TextureFormat::DEPTH24_STENCIL8;
-        case AHARDWAREBUFFER_FORMAT_D32_FLOAT:
-            return TextureFormat::DEPTH32F;
-        case AHARDWAREBUFFER_FORMAT_D32_FLOAT_S8_UINT:
-            return TextureFormat::DEPTH32F_STENCIL8;
-        case AHARDWAREBUFFER_FORMAT_S8_UINT:
-            return TextureFormat::STENCIL8;
-        case AHARDWAREBUFFER_FORMAT_R8_UNORM:
-            return TextureFormat::R8;
-        default:
-            return TextureFormat::UNUSED;
-    }
-}
-
-TextureUsage mapToFilamentUsage(unsigned int usage, TextureFormat format) noexcept {
-    TextureUsage usageFlags = TextureUsage::NONE;
-
-    if (usage & AHARDWAREBUFFER_USAGE_GPU_SAMPLED_IMAGE) {
-        usageFlags |= TextureUsage::SAMPLEABLE;
-    }
-
-    if (usage & AHARDWAREBUFFER_USAGE_GPU_FRAMEBUFFER) {
-        if (isDepthFormat(format)) {
-            usageFlags |= TextureUsage::DEPTH_ATTACHMENT;
-        }
-        if (isStencilFormat(format)) {
-            usageFlags |= TextureUsage::STENCIL_ATTACHMENT;
-        }
-        if (isColorFormat(format)) {
-            usageFlags |= TextureUsage::COLOR_ATTACHMENT;
-        }
-    }
-
-    if (usage & AHARDWAREBUFFER_USAGE_GPU_DATA_BUFFER) {
-        usageFlags |= TextureUsage::UPLOADABLE;
-    }
-
-    if (usage & AHARDWAREBUFFER_USAGE_PROTECTED_CONTENT) {
-        usageFlags |= TextureUsage::PROTECTED;
-    }
-
-    if (usageFlags == TextureUsage::NONE) {
-        usageFlags = TextureUsage::COLOR_ATTACHMENT | TextureUsage::SAMPLEABLE;
-    }
-
-    return usageFlags;
-}
-
-} // namespace backend::filament

filament/backend/src/HandleAllocator.cpp

@@ -211,8 +211,4 @@ template class HandleAllocatorVK;
 template class HandleAllocatorMTL;
 #endif
 
-#if defined (FILAMENT_SUPPORTS_WEBGPU)
-template class HandleAllocatorWGPU;
-#endif
-
 } // namespace filament::backend

filament/backend/src/PlatformFactory.cpp

@@ -19,11 +19,6 @@
 #include <utils/Systrace.h>
 #include <utils/debug.h>
 
-// We need to keep this up top for the linux (X11) name collisions.
-#if defined(FILAMENT_SUPPORTS_WEBGPU)
-    #include "backend/platforms/WebGPUPlatform.h"
-#endif
-
 #if defined(__ANDROID__)
     #include <sys/system_properties.h>
     #if defined(FILAMENT_SUPPORTS_OPENGL) && !defined(FILAMENT_USE_EXTERNAL_GLES3)
@@ -35,11 +30,7 @@
     #endif
 #elif defined(__APPLE__)
     #if defined(FILAMENT_SUPPORTS_OPENGL) && !defined(FILAMENT_USE_EXTERNAL_GLES3)
-        #if defined(FILAMENT_SUPPORTS_OSMESA)
-            #include <backend/platforms/PlatformOSMesa.h>
-        #else
-            #include <backend/platforms/PlatformCocoaGL.h>
-        #endif
+        #include <backend/platforms/PlatformCocoaGL.h>
     #endif
 #elif defined(__linux__)
     #if defined(FILAMENT_SUPPORTS_X11)
@@ -64,11 +55,7 @@
 #endif
 
 #if defined(FILAMENT_DRIVER_SUPPORTS_VULKAN)
-    #if defined(__ANDROID__)
-        #include "backend/platforms/VulkanPlatformAndroid.h"
-    #else
-        #include "backend/platforms/VulkanPlatform.h"
-    #endif
+    #include "backend/platforms/VulkanPlatform.h"
 #endif
 
 #if defined (FILAMENT_SUPPORTS_METAL)
@@ -78,6 +65,9 @@ filament::backend::Platform* createDefaultMetalPlatform();
 #endif
 
 #include "noop/PlatformNoop.h"
+#if defined(FILAMENT_SUPPORTS_WEBGPU)
+    #include "webgpu/WebGPUPlatform.h"
+#endif
 
 namespace filament::backend {
 
@@ -114,11 +104,7 @@ Platform* PlatformFactory::create(Backend* backend) noexcept {
     }
     if (*backend == Backend::VULKAN) {
         #if defined(FILAMENT_DRIVER_SUPPORTS_VULKAN)
-            #if defined(__ANDROID__)
-                return new VulkanPlatformAndroid();
-            #else
-                return new VulkanPlatform();
-            #endif
+            return new VulkanPlatform();
         #else
             return nullptr;
         #endif
@@ -146,11 +132,7 @@ Platform* PlatformFactory::create(Backend* backend) noexcept {
         #elif defined(FILAMENT_IOS)
             return new PlatformCocoaTouchGL();
         #elif defined(__APPLE__)
-            #if defined(FILAMENT_SUPPORTS_OSMESA)
-                return new PlatformOSMesa();
-            #else
-                return new PlatformCocoaGL();
-            #endif
+            return new PlatformCocoaGL();
         #elif defined(__linux__)
             #if defined(FILAMENT_SUPPORTS_X11)
                 return new PlatformGLX();

filament/backend/src/metal/MetalDriver.mm

@@ -672,8 +672,22 @@ void MetalDriver::createTimerQueryR(Handle<HwTimerQuery> tqh, int) {
     // nothing to do, timer query was constructed in createTimerQueryS
 }
 
-UTILS_UNUSED
-static const char* toString(ShaderStageFlags flags) {
+const char* toString(DescriptorType type) {
+    switch (type) {
+        case DescriptorType::UNIFORM_BUFFER:
+            return "UNIFORM_BUFFER";
+        case DescriptorType::SHADER_STORAGE_BUFFER:
+            return "SHADER_STORAGE_BUFFER";
+        case DescriptorType::SAMPLER:
+            return "SAMPLER";
+        case DescriptorType::INPUT_ATTACHMENT:
+            return "INPUT_ATTACHMENT";
+        case DescriptorType::SAMPLER_EXTERNAL:
+            return "SAMPLER_EXTERNAL";
+    }
+}
+
+const char* toString(ShaderStageFlags flags) {
     std::vector<const char*> stages;
     if (any(flags & ShaderStageFlags::VERTEX)) {
         stages.push_back("VERTEX");
@@ -1163,24 +1177,6 @@ size_t MetalDriver::getMaxUniformBufferSize() {
     return 256 * 1024 * 1024;   // TODO: return the actual size instead of hardcoding the minspec
 }
 
-size_t MetalDriver::getMaxTextureSize(SamplerType type) {
-    if (type == SamplerType::SAMPLER_3D) {
-        return 2048;
-    }
-    if (mContext->highestSupportedGpuFamily.apple >= 3 ||
-            mContext->highestSupportedGpuFamily.mac >= 2) {
-        return 16384;
-    } else if (mContext->highestSupportedGpuFamily.apple >= 2) {
-        return 8192;
-    }
-    return 4096;
-}
-
-size_t MetalDriver::getMaxArrayTextureLayers() {
-    // TODO: return the actual size instead of hardcoding the minspec
-    return 256;
-}
-
 void MetalDriver::updateIndexBuffer(Handle<HwIndexBuffer> ibh, BufferDescriptor&& data,
         uint32_t byteOffset) {
     FILAMENT_CHECK_PRECONDITION(data.buffer)
@@ -1394,8 +1390,8 @@ void MetalDriver::setRenderPrimitiveBuffer(Handle<HwRenderPrimitive> rph, Primit
     auto primitive = handle_cast<MetalRenderPrimitive>(rph);
     auto vertexBuffer = handle_cast<MetalVertexBuffer>(vbh);
     auto indexBuffer = handle_cast<MetalIndexBuffer>(ibh);
-    primitive->vertexBuffer = vertexBuffer;
-    primitive->indexBuffer = indexBuffer;
+    MetalVertexBufferInfo const* const vbi = handle_cast<MetalVertexBufferInfo>(vertexBuffer->vbih);
+    primitive->setBuffers(vbi, vertexBuffer, indexBuffer);
     primitive->type = pt;
 }
 

filament/backend/src/metal/MetalEnums.h

@@ -185,7 +185,6 @@ inline MTLPixelFormat getMetalFormat(PixelDataFormat format, PixelDataType type)
     CONVERT(RGBA_INTEGER, UINT, RGBA32Uint);
     CONVERT(RGBA_INTEGER, INT, RGBA32Sint);
     CONVERT(RGBA, FLOAT, RGBA32Float);
-    CONVERT(DEPTH_COMPONENT, FLOAT, Depth32Float);
     #undef CONVERT
 
     return MTLPixelFormatInvalid;

filament/backend/src/metal/MetalHandles.h

@@ -194,8 +194,12 @@ struct MetalIndexBuffer : public HwIndexBuffer {
 };
 
 struct MetalRenderPrimitive : public HwRenderPrimitive {
+    MetalRenderPrimitive();
+    void setBuffers(MetalVertexBufferInfo const* const vbi,
+            MetalVertexBuffer* vertexBuffer, MetalIndexBuffer* indexBuffer);
     // The pointers to MetalVertexBuffer and MetalIndexBuffer are "weak".
     // The MetalVertexBuffer and MetalIndexBuffer must outlive the MetalRenderPrimitive.
+
     MetalVertexBuffer* vertexBuffer = nullptr;
     MetalIndexBuffer* indexBuffer = nullptr;
 };
@@ -376,6 +380,7 @@ public:
 
     math::uint2 getAttachmentSize() noexcept;
 
+    bool isDefaultRenderTarget() const { return defaultRenderTarget; }
     uint8_t getSamples() const { return samples; }
 
     Attachment getDrawColorAttachment(size_t index);

filament/backend/src/metal/MetalHandles.mm

@@ -536,6 +536,15 @@ MetalIndexBuffer::MetalIndexBuffer(MetalContext& context, BufferUsage usage, uin
         uint32_t indexCount) : HwIndexBuffer(elementSize, indexCount),
         buffer(context, BufferObjectBinding::VERTEX, usage, elementSize * indexCount, true) { }
 
+MetalRenderPrimitive::MetalRenderPrimitive() {
+}
+
+void MetalRenderPrimitive::setBuffers(MetalVertexBufferInfo const* const vbi,
+        MetalVertexBuffer* vertexBuffer, MetalIndexBuffer* indexBuffer) {
+    this->vertexBuffer = vertexBuffer;
+    this->indexBuffer = indexBuffer;
+}
+
 MetalProgram::MetalProgram(MetalContext& context, Program&& program) noexcept
     : HwProgram(program.getName()), mContext(context) {
     mToken = context.shaderCompiler->createProgram(program.getName(), std::move(program));
@@ -1356,25 +1365,7 @@ id<MTLArgumentEncoder> MetalDescriptorSetLayout::getArgumentEncoderSlow(id<MTLDe
                 [arguments addObject:bufferArgument];
                 break;
             }
-            case DescriptorType::SAMPLER_2D_FLOAT:
-            case DescriptorType::SAMPLER_2D_INT:
-            case DescriptorType::SAMPLER_2D_UINT:
-            case DescriptorType::SAMPLER_2D_DEPTH:
-            case DescriptorType::SAMPLER_2D_ARRAY_FLOAT:
-            case DescriptorType::SAMPLER_2D_ARRAY_INT:
-            case DescriptorType::SAMPLER_2D_ARRAY_UINT:
-            case DescriptorType::SAMPLER_2D_ARRAY_DEPTH:
-            case DescriptorType::SAMPLER_CUBE_FLOAT:
-            case DescriptorType::SAMPLER_CUBE_INT:
-            case DescriptorType::SAMPLER_CUBE_UINT:
-            case DescriptorType::SAMPLER_CUBE_DEPTH:
-            case DescriptorType::SAMPLER_CUBE_ARRAY_FLOAT:
-            case DescriptorType::SAMPLER_CUBE_ARRAY_INT:
-            case DescriptorType::SAMPLER_CUBE_ARRAY_UINT:
-            case DescriptorType::SAMPLER_CUBE_ARRAY_DEPTH:
-            case DescriptorType::SAMPLER_3D_FLOAT:
-            case DescriptorType::SAMPLER_3D_INT:
-            case DescriptorType::SAMPLER_3D_UINT:
+            case DescriptorType::SAMPLER:
             case DescriptorType::SAMPLER_EXTERNAL: {
                 MTLArgumentDescriptor* textureArgument = [MTLArgumentDescriptor argumentDescriptor];
                 textureArgument.index = binding.binding * 2;
@@ -1490,25 +1481,7 @@ id<MTLBuffer> MetalDescriptorSet::finalizeAndGetBuffer(MetalDriver* driver, Shad
                            atIndex:binding.binding * 2];
                 break;
             }
-            case DescriptorType::SAMPLER_2D_FLOAT:
-            case DescriptorType::SAMPLER_2D_INT:
-            case DescriptorType::SAMPLER_2D_UINT:
-            case DescriptorType::SAMPLER_2D_DEPTH:
-            case DescriptorType::SAMPLER_2D_ARRAY_FLOAT:
-            case DescriptorType::SAMPLER_2D_ARRAY_INT:
-            case DescriptorType::SAMPLER_2D_ARRAY_UINT:
-            case DescriptorType::SAMPLER_2D_ARRAY_DEPTH:
-            case DescriptorType::SAMPLER_CUBE_FLOAT:
-            case DescriptorType::SAMPLER_CUBE_INT:
-            case DescriptorType::SAMPLER_CUBE_UINT:
-            case DescriptorType::SAMPLER_CUBE_DEPTH:
-            case DescriptorType::SAMPLER_CUBE_ARRAY_FLOAT:
-            case DescriptorType::SAMPLER_CUBE_ARRAY_INT:
-            case DescriptorType::SAMPLER_CUBE_ARRAY_UINT:
-            case DescriptorType::SAMPLER_CUBE_ARRAY_DEPTH:
-            case DescriptorType::SAMPLER_3D_FLOAT:
-            case DescriptorType::SAMPLER_3D_INT:
-            case DescriptorType::SAMPLER_3D_UINT:
+            case DescriptorType::SAMPLER:
             case DescriptorType::SAMPLER_EXTERNAL: {
                 auto found = textures.find(binding.binding);
                 if (found == textures.end()) {

filament/backend/src/metal/MetalShaderCompiler.mm

@@ -138,7 +138,6 @@ bool MetalShaderCompiler::isParallelShaderCompileSupported() const noexcept {
             case ShaderLanguage::ESSL1:
             case ShaderLanguage::ESSL3:
             case ShaderLanguage::SPIRV:
-            case ShaderLanguage::WGSL:
                 break;
         }
 

filament/backend/src/noop/NoopDriver.cpp

@@ -240,16 +240,6 @@ size_t NoopDriver::getMaxUniformBufferSize() {
     return 16384u;
 }
 
-size_t NoopDriver::getMaxTextureSize(SamplerType target) {
-    // NoopDriver is being actively used for other purposes.  This needs to be resolved before we
-    // can change it to 2048. b/406832484
-    return 16384u;
-}
-
-size_t NoopDriver::getMaxArrayTextureLayers() {
-    return 256u;
-}
-
 void NoopDriver::updateIndexBuffer(Handle<HwIndexBuffer> ibh, BufferDescriptor&& p,
         uint32_t byteOffset) {
     scheduleDestroy(std::move(p));

filament/backend/src/noop/PlatformNoop.cpp

@@ -20,7 +20,7 @@
 
 namespace filament::backend {
 
-Driver* PlatformNoop::createDriver(void* sharedGLContext, const Platform::DriverConfig& driverConfig) noexcept {
+Driver* PlatformNoop::createDriver(void* const sharedGLContext, const Platform::DriverConfig& driverConfig) noexcept {
     return NoopDriver::create();
 }
 

filament/backend/src/opengl/BindingMap.h

@@ -69,8 +69,9 @@ public:
         assert_invariant(set < MAX_DESCRIPTOR_SET_COUNT);
         assert_invariant(binding < MAX_DESCRIPTOR_COUNT);
         assert_invariant(entry.binding < 128); // we reserve 1 bit for the type right now
-        mStorage[set][binding] = { uint8_t(entry.binding),
-                                   DescriptorSetLayoutBinding::isSampler(entry.type) };
+        mStorage[set][binding] = { (uint8_t)entry.binding,
+                                   entry.type == DescriptorType::SAMPLER ||
+                                   entry.type == DescriptorType::SAMPLER_EXTERNAL };
         mActiveDescriptors[set].set(binding);
     }
 

filament/backend/src/opengl/GLDescriptorSet.cpp

@@ -95,26 +95,7 @@ GLDescriptorSet::GLDescriptorSet(OpenGLContext& gl, DescriptorSetLayoutHandle ds
                 }
                 break;
             }
-
-            case DescriptorType::SAMPLER_2D_FLOAT:
-            case DescriptorType::SAMPLER_2D_INT:
-            case DescriptorType::SAMPLER_2D_UINT:
-            case DescriptorType::SAMPLER_2D_DEPTH:
-            case DescriptorType::SAMPLER_2D_ARRAY_FLOAT:
-            case DescriptorType::SAMPLER_2D_ARRAY_INT:
-            case DescriptorType::SAMPLER_2D_ARRAY_UINT:
-            case DescriptorType::SAMPLER_2D_ARRAY_DEPTH:
-            case DescriptorType::SAMPLER_CUBE_FLOAT:
-            case DescriptorType::SAMPLER_CUBE_INT:
-            case DescriptorType::SAMPLER_CUBE_UINT:
-            case DescriptorType::SAMPLER_CUBE_DEPTH:
-            case DescriptorType::SAMPLER_CUBE_ARRAY_FLOAT:
-            case DescriptorType::SAMPLER_CUBE_ARRAY_INT:
-            case DescriptorType::SAMPLER_CUBE_ARRAY_UINT:
-            case DescriptorType::SAMPLER_CUBE_ARRAY_DEPTH:
-            case DescriptorType::SAMPLER_3D_FLOAT:
-            case DescriptorType::SAMPLER_3D_INT:
-            case DescriptorType::SAMPLER_3D_UINT:
+            case DescriptorType::SAMPLER:
             case DescriptorType::SAMPLER_EXTERNAL:
                 if (UTILS_UNLIKELY(gl.isES2())) {
                     desc.emplace<SamplerGLES2>();

filament/backend/src/opengl/GLUtils.cpp

@@ -16,15 +16,9 @@
 
 #include "GLUtils.h"
 
-#include "private/backend/Driver.h"
-
-#include <utils/compiler.h>
-#include <utils/ostream.h>
 #include <utils/trap.h>
 
-#include <string_view>
-
-#include <stddef.h>
+#include "private/backend/Driver.h"
 
 namespace filament::backend {
 
@@ -34,31 +28,38 @@ using namespace utils;
 namespace GLUtils {
 
 UTILS_NOINLINE
-std::string_view getGLErrorString(GLenum error) noexcept {
+const char* getGLError(GLenum error) noexcept {
+    const char* string = "unknown";
     switch (error) {
         case GL_NO_ERROR:
-            return "GL_NO_ERROR";
+            string = "GL_NO_ERROR";
+            break;
         case GL_INVALID_ENUM:
-            return "GL_INVALID_ENUM";
+            string = "GL_INVALID_ENUM";
+            break;
         case GL_INVALID_VALUE:
-            return "GL_INVALID_VALUE";
+            string = "GL_INVALID_VALUE";
+            break;
         case GL_INVALID_OPERATION:
-            return "GL_INVALID_OPERATION";
+            string = "GL_INVALID_OPERATION";
+            break;
         case GL_INVALID_FRAMEBUFFER_OPERATION:
-            return "GL_INVALID_FRAMEBUFFER_OPERATION";
+            string = "GL_INVALID_FRAMEBUFFER_OPERATION";
+            break;
         case GL_OUT_OF_MEMORY:
-            return "GL_OUT_OF_MEMORY";
+            string = "GL_OUT_OF_MEMORY";
+            break;
         default:
             break;
     }
-    return "unknown";
+    return string;
 }
 
 UTILS_NOINLINE
 GLenum checkGLError(io::ostream& out, const char* function, size_t line) noexcept {
     GLenum const error = glGetError();
-    if (UTILS_VERY_UNLIKELY(error != GL_NO_ERROR)) {
-        auto const string = getGLErrorString(error);
+    if (error != GL_NO_ERROR) {
+        const char* string = getGLError(error);
         out << "OpenGL error " << io::hex << error << " (" << string << ") in \""
             << function << "\" at line " << io::dec << line << io::endl;
     }
@@ -68,39 +69,46 @@ GLenum checkGLError(io::ostream& out, const char* function, size_t line) noexcep
 UTILS_NOINLINE
 void assertGLError(io::ostream& out, const char* function, size_t line) noexcept {
     GLenum const err = checkGLError(out, function, line);
-    if (UTILS_VERY_UNLIKELY(err != GL_NO_ERROR)) {
+    if (err != GL_NO_ERROR) {
         debug_trap();
     }
 }
 
 UTILS_NOINLINE
-std::string_view getFramebufferStatusString(GLenum status) noexcept {
+const char* getFramebufferStatus(GLenum status) noexcept {
+    const char* string = "unknown";
     switch (status) {
         case GL_FRAMEBUFFER_COMPLETE:
-            return "GL_FRAMEBUFFER_COMPLETE";
+            string = "GL_FRAMEBUFFER_COMPLETE";
+            break;
         case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
-            return "GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT";
+            string = "GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT";
+            break;
         case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
-            return "GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT";
+            string = "GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT";
+            break;
         case GL_FRAMEBUFFER_UNSUPPORTED:
-            return "GL_FRAMEBUFFER_UNSUPPORTED";
+            string = "GL_FRAMEBUFFER_UNSUPPORTED";
+            break;
 #ifndef FILAMENT_SILENCE_NOT_SUPPORTED_BY_ES2
         case GL_FRAMEBUFFER_UNDEFINED:
-            return "GL_FRAMEBUFFER_UNDEFINED";
+            string = "GL_FRAMEBUFFER_UNDEFINED";
+            break;
         case GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE:
-            return "GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE";
+            string = "GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE";
+            break;
 #endif
         default:
             break;
     }
-    return "unknown";
+    return string;
 }
 
 UTILS_NOINLINE
 GLenum checkFramebufferStatus(io::ostream& out, GLenum target, const char* function, size_t line) noexcept {
     GLenum const status = glCheckFramebufferStatus(target);
-    if (UTILS_VERY_UNLIKELY(status != GL_FRAMEBUFFER_COMPLETE)) {
-        auto const string = getFramebufferStatusString(status);
+    if (status != GL_FRAMEBUFFER_COMPLETE) {
+        const char* string = getFramebufferStatus(status);
         out << "OpenGL framebuffer error " << io::hex << status << " (" << string << ") in \""
             << function << "\" at line " << io::dec << line << io::endl;
     }
@@ -110,7 +118,7 @@ GLenum checkFramebufferStatus(io::ostream& out, GLenum target, const char* funct
 UTILS_NOINLINE
 void assertFramebufferStatus(io::ostream& out, GLenum target, const char* function, size_t line) noexcept {
     GLenum const status = checkFramebufferStatus(out, target, function, line);
-    if (UTILS_VERY_UNLIKELY(status != GL_FRAMEBUFFER_COMPLETE)) {
+    if (status != GL_FRAMEBUFFER_COMPLETE) {
         debug_trap();
     }
 }

filament/backend/src/opengl/GLUtils.h

@@ -17,26 +17,29 @@
 #ifndef TNT_FILAMENT_BACKEND_OPENGL_GLUTILS_H
 #define TNT_FILAMENT_BACKEND_OPENGL_GLUTILS_H
 
+#include <utils/compiler.h>
 #include <utils/debug.h>
-#include <utils/ostream.h>
+#include <utils/Log.h>
 
 #include <backend/DriverEnums.h>
 
 #include <string_view>
 #include <unordered_set>
 
-#include <stddef.h>
 #include <stdint.h>
+#include <stddef.h>
+#include <string.h>
 
 #include "gl_headers.h"
 
-namespace filament::backend::GLUtils {
+namespace filament::backend {
+namespace GLUtils {
 
-std::string_view getGLErrorString(GLenum error) noexcept;
+const char* getGLError(GLenum error) noexcept;
 GLenum checkGLError(utils::io::ostream& out, const char* function, size_t line) noexcept;
 void assertGLError(utils::io::ostream& out, const char* function, size_t line) noexcept;
 
-std::string_view getFramebufferStatusString(GLenum err) noexcept;
+const char* getFramebufferStatus(GLenum err) noexcept;
 GLenum checkFramebufferStatus(utils::io::ostream& out, GLenum target, const char* function, size_t line) noexcept;
 void assertFramebufferStatus(utils::io::ostream& out, GLenum target, const char* function, size_t line) noexcept;
 
@@ -50,7 +53,7 @@ void assertFramebufferStatus(utils::io::ostream& out, GLenum target, const char*
 #   define CHECK_GL_FRAMEBUFFER_STATUS(out, target) { GLUtils::checkFramebufferStatus(out, target, __func__, __LINE__); }
 #endif
 
-constexpr GLuint getComponentCount(ElementType const type) noexcept {
+constexpr GLuint getComponentCount(ElementType type) noexcept {
     using ElementType = ElementType;
     switch (type) {
         case ElementType::BYTE:
@@ -84,29 +87,27 @@ constexpr GLuint getComponentCount(ElementType const type) noexcept {
         case ElementType::USHORT4:
             return 4;
     }
-    // should never happen
-    return 1;
 }
 
 // ------------------------------------------------------------------------------------------------
 // Our enums to GLenum conversions
 // ------------------------------------------------------------------------------------------------
 
-constexpr GLbitfield getAttachmentBitfield(TargetBufferFlags const flags) noexcept {
+constexpr GLbitfield getAttachmentBitfield(TargetBufferFlags flags) noexcept {
     GLbitfield mask = 0;
     if (any(flags & TargetBufferFlags::COLOR_ALL)) {
-        mask |= GLbitfield(GL_COLOR_BUFFER_BIT);
+        mask |= (GLbitfield)GL_COLOR_BUFFER_BIT;
     }
     if (any(flags & TargetBufferFlags::DEPTH)) {
-        mask |= GLbitfield(GL_DEPTH_BUFFER_BIT);
+        mask |= (GLbitfield)GL_DEPTH_BUFFER_BIT;
     }
     if (any(flags & TargetBufferFlags::STENCIL)) {
-        mask |= GLbitfield(GL_STENCIL_BUFFER_BIT);
+        mask |= (GLbitfield)GL_STENCIL_BUFFER_BIT;
     }
     return mask;
 }
 
-constexpr GLenum getBufferUsage(BufferUsage const usage) noexcept {
+constexpr GLenum getBufferUsage(BufferUsage usage) noexcept {
     switch (usage) {
         case BufferUsage::STATIC:
             return GL_STATIC_DRAW;
@@ -115,7 +116,7 @@ constexpr GLenum getBufferUsage(BufferUsage const usage) noexcept {
     }
 }
 
-constexpr GLenum getBufferBindingType(BufferObjectBinding const bindingType) noexcept {
+constexpr GLenum getBufferBindingType(BufferObjectBinding bindingType) noexcept {
     switch (bindingType) {
         case BufferObjectBinding::VERTEX:
             return GL_ARRAY_BUFFER;
@@ -134,15 +135,13 @@ constexpr GLenum getBufferBindingType(BufferObjectBinding const bindingType) noe
             return 0x90D2; // just to return something
 #endif
     }
-    // should never happen
-    return GL_ARRAY_BUFFER;
 }
 
-constexpr GLboolean getNormalization(bool const normalized) noexcept {
+constexpr GLboolean getNormalization(bool normalized) noexcept {
     return GLboolean(normalized ? GL_TRUE : GL_FALSE);
 }
 
-constexpr GLenum getComponentType(ElementType const type) noexcept {
+constexpr GLenum getComponentType(ElementType type) noexcept {
     using ElementType = ElementType;
     switch (type) {
         case ElementType::BYTE:
@@ -185,11 +184,9 @@ constexpr GLenum getComponentType(ElementType const type) noexcept {
             return GL_HALF_FLOAT_OES;
 #endif
     }
-    // should never happen
-    return GL_INT;
 }
 
-constexpr GLenum getTextureTargetNotExternal(SamplerType const target) noexcept {
+constexpr GLenum getTextureTargetNotExternal(SamplerType target) noexcept {
     switch (target) {
         case SamplerType::SAMPLER_2D:
             return GL_TEXTURE_2D;
@@ -205,16 +202,14 @@ constexpr GLenum getTextureTargetNotExternal(SamplerType const target) noexcept
             // we should never be here
             return GL_TEXTURE_2D;
     }
-    // should never happen
-    return GL_TEXTURE_2D;
 }
 
-constexpr GLenum getCubemapTarget(uint16_t const layer) noexcept {
+constexpr GLenum getCubemapTarget(uint16_t layer) noexcept {
     assert_invariant(layer <= 5);
     return GL_TEXTURE_CUBE_MAP_POSITIVE_X + layer;
 }
 
-constexpr GLenum getWrapMode(SamplerWrapMode const mode) noexcept {
+constexpr GLenum getWrapMode(SamplerWrapMode mode) noexcept {
     using SamplerWrapMode = SamplerWrapMode;
     switch (mode) {
         case SamplerWrapMode::REPEAT:
@@ -224,8 +219,6 @@ constexpr GLenum getWrapMode(SamplerWrapMode const mode) noexcept {
         case SamplerWrapMode::MIRRORED_REPEAT:
             return GL_MIRRORED_REPEAT;
     }
-    // should never happen
-    return GL_CLAMP_TO_EDGE;
 }
 
 constexpr GLenum getTextureFilter(SamplerMinFilter filter) noexcept {
@@ -241,8 +234,6 @@ constexpr GLenum getTextureFilter(SamplerMinFilter filter) noexcept {
             return GL_NEAREST_MIPMAP_NEAREST
                    - GLenum(SamplerMinFilter::NEAREST_MIPMAP_NEAREST) + GLenum(filter);
     }
-    // should never happen
-    return GL_NEAREST;
 }
 
 constexpr GLenum getTextureFilter(SamplerMagFilter filter) noexcept {
@@ -250,7 +241,7 @@ constexpr GLenum getTextureFilter(SamplerMagFilter filter) noexcept {
 }
 
 
-constexpr GLenum getBlendEquationMode(BlendEquation const mode) noexcept {
+constexpr GLenum getBlendEquationMode(BlendEquation mode) noexcept {
     using BlendEquation = BlendEquation;
     switch (mode) {
         case BlendEquation::ADD:               return GL_FUNC_ADD;
@@ -259,11 +250,9 @@ constexpr GLenum getBlendEquationMode(BlendEquation const mode) noexcept {
         case BlendEquation::MIN:               return GL_MIN;
         case BlendEquation::MAX:               return GL_MAX;
     }
-    // should never happen
-    return GL_FUNC_ADD;
 }
 
-constexpr GLenum getBlendFunctionMode(BlendFunction const mode) noexcept {
+constexpr GLenum getBlendFunctionMode(BlendFunction mode) noexcept {
     using BlendFunction = BlendFunction;
     switch (mode) {
         case BlendFunction::ZERO:                  return GL_ZERO;
@@ -278,11 +267,9 @@ constexpr GLenum getBlendFunctionMode(BlendFunction const mode) noexcept {
         case BlendFunction::ONE_MINUS_DST_ALPHA:   return GL_ONE_MINUS_DST_ALPHA;
         case BlendFunction::SRC_ALPHA_SATURATE:    return GL_SRC_ALPHA_SATURATE;
     }
-    // should never happen
-    return GL_ONE;
 }
 
-constexpr GLenum getCompareFunc(SamplerCompareFunc const func) noexcept {
+constexpr GLenum getCompareFunc(SamplerCompareFunc func) noexcept {
     switch (func) {
         case SamplerCompareFunc::LE:    return GL_LEQUAL;
         case SamplerCompareFunc::GE:    return GL_GEQUAL;
@@ -293,30 +280,28 @@ constexpr GLenum getCompareFunc(SamplerCompareFunc const func) noexcept {
         case SamplerCompareFunc::A:     return GL_ALWAYS;
         case SamplerCompareFunc::N:     return GL_NEVER;
     }
-    // should never happen
-    return GL_LEQUAL;
 }
 
 #ifndef FILAMENT_SILENCE_NOT_SUPPORTED_BY_ES2
-constexpr GLenum getTextureCompareMode(SamplerCompareMode const mode) noexcept {
+constexpr GLenum getTextureCompareMode(SamplerCompareMode mode) noexcept {
     return mode == SamplerCompareMode::NONE ?
            GL_NONE : GL_COMPARE_REF_TO_TEXTURE;
 }
 
-constexpr GLenum getTextureCompareFunc(SamplerCompareFunc const func) noexcept {
+constexpr GLenum getTextureCompareFunc(SamplerCompareFunc func) noexcept {
     return getCompareFunc(func);
 }
 #endif
 
-constexpr GLenum getDepthFunc(SamplerCompareFunc const func) noexcept {
+constexpr GLenum getDepthFunc(SamplerCompareFunc func) noexcept {
     return getCompareFunc(func);
 }
 
-constexpr GLenum getStencilFunc(SamplerCompareFunc const func) noexcept {
+constexpr GLenum getStencilFunc(SamplerCompareFunc func) noexcept {
     return getCompareFunc(func);
 }
 
-constexpr GLenum getStencilOp(StencilOperation const op) noexcept {
+constexpr GLenum getStencilOp(StencilOperation op) noexcept {
     switch (op) {
         case StencilOperation::KEEP:        return GL_KEEP;
         case StencilOperation::ZERO:        return GL_ZERO;
@@ -327,11 +312,9 @@ constexpr GLenum getStencilOp(StencilOperation const op) noexcept {
         case StencilOperation::DECR_WRAP:   return GL_DECR_WRAP;
         case StencilOperation::INVERT:      return GL_INVERT;
     }
-    // should never happen
-    return GL_KEEP;
 }
 
-constexpr GLenum getFormat(PixelDataFormat const format) noexcept {
+constexpr GLenum getFormat(PixelDataFormat format) noexcept {
     using PixelDataFormat = PixelDataFormat;
     switch (format) {
         case PixelDataFormat::RGB:              return GL_RGB;
@@ -353,11 +336,9 @@ constexpr GLenum getFormat(PixelDataFormat const format) noexcept {
         default: return GL_NONE;
 #endif
     }
-    // should never happen
-    return GL_RGBA;
 }
 
-constexpr GLenum getType(PixelDataType const type) noexcept {
+constexpr GLenum getType(PixelDataType type) noexcept {
     using PixelDataType = PixelDataType;
     switch (type) {
         case PixelDataType::UBYTE:                return GL_UNSIGNED_BYTE;
@@ -379,12 +360,10 @@ constexpr GLenum getType(PixelDataType const type) noexcept {
         default: return GL_NONE;
 #endif
     }
-    // should never happen
-    return GL_UNSIGNED_INT;
 }
 
 #if !defined(__EMSCRIPTEN__)  && !defined(FILAMENT_SILENCE_NOT_SUPPORTED_BY_ES2)
-constexpr GLenum getSwizzleChannel(TextureSwizzle const c) noexcept {
+constexpr GLenum getSwizzleChannel(TextureSwizzle c) noexcept {
     using TextureSwizzle = TextureSwizzle;
     switch (c) {
         case TextureSwizzle::SUBSTITUTE_ZERO:   return GL_ZERO;
@@ -394,12 +373,10 @@ constexpr GLenum getSwizzleChannel(TextureSwizzle const c) noexcept {
         case TextureSwizzle::CHANNEL_2:         return GL_BLUE;
         case TextureSwizzle::CHANNEL_3:         return GL_ALPHA;
     }
-    // should never happen
-    return GL_RED;
 }
 #endif
 
-constexpr GLenum getCullingMode(CullingMode const mode) noexcept {
+constexpr GLenum getCullingMode(CullingMode mode) noexcept {
     switch (mode) {
         case CullingMode::NONE:
             // should never happen
@@ -411,13 +388,11 @@ constexpr GLenum getCullingMode(CullingMode const mode) noexcept {
         case CullingMode::FRONT_AND_BACK:
             return GL_FRONT_AND_BACK;
     }
-    // should never happen
-    return GL_FRONT_AND_BACK;
 }
 
 // ES2 supported internal formats for texturing and how they  map to a format/type
 constexpr std::pair<GLenum, GLenum> textureFormatToFormatAndType(
-        TextureFormat const format) noexcept {
+        TextureFormat format) noexcept {
     switch (format) {
         case TextureFormat::R8:         return { 0x1909 /*GL_LUMINANCE*/, GL_UNSIGNED_BYTE };
         case TextureFormat::RGB8:       return { GL_RGB,                  GL_UNSIGNED_BYTE };
@@ -438,7 +413,7 @@ constexpr std::pair<GLenum, GLenum> textureFormatToFormatAndType(
 // clang loses it on this one, and generates a huge jump table when
 // inlined. So we don't  mark it as inline (only constexpr) which solves the problem,
 // strangely, when not inlined, clang simply generates an array lookup.
-constexpr /* inline */ GLenum getInternalFormat(TextureFormat const format) noexcept {
+constexpr /* inline */ GLenum getInternalFormat(TextureFormat format) noexcept {
     switch (format) {
 
         /* Formats supported by our ES2 implementations */
@@ -686,7 +661,7 @@ public:
 
 unordered_string_set split(const char* extensions) noexcept;
 
-} // namespace filament::backend::GLUtils
-
+} // namespace GLUtils
+} // namespace filament::backend
 
 #endif // TNT_FILAMENT_BACKEND_OPENGL_GLUTILS_H