Dawn change to enable writeBuffer for size != multiple of 4

Co-authored-by: Andy Hovingh <6198728+AndyHovingh@users.noreply.github.com>

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

@@ -0,0 +1,7 @@
+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

@@ -0,0 +1,38 @@
+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

@@ -0,0 +1,23 @@
+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/workflows/android-continuous.yml

@@ -16,6 +16,9 @@ jobs:
 
     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

@@ -14,6 +14,9 @@ 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

@@ -14,6 +14,9 @@ jobs:
 
     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

@@ -14,6 +14,9 @@ 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

.github/workflows/presubmit.yml

@@ -9,22 +9,32 @@ on:
     - main
 
 jobs:
-  build-desktop:
-    name: build-desktop
-    runs-on: ${{ matrix.os }}
-
-    strategy:
-      matrix:
-        os: [macos-14-xlarge, ubuntu-22.04-16core]
-
+  build-desktop-mac:
+    name: build-mac
+    runs-on: macos-14-xlarge
     steps:
       - uses: actions/checkout@v4.1.6
         with:
           fetch-depth: 0
+      - uses: ./.github/actions/mac-prereq
       - name: Run build script
         run: |
-          WORKFLOW_OS=`echo \`uname\` | sed "s/Darwin/mac/" | tr [:upper:] [:lower:]`
-          cd build/$WORKFLOW_OS && printf "y" | ./build.sh presubmit
+          cd build/mac && printf "y" | ./build.sh presubmit
+      - name: Test material parser
+        run: |
+          out/cmake-release/filament/test/test_material_parser
+
+  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
       - name: Test material parser
         run: |
           out/cmake-release/filament/test/test_material_parser
@@ -35,6 +45,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4.1.6
+        with:
+          fetch-depth: 0
       - name: Run build script
         run: |
           build\windows\build-github.bat presubmit
@@ -48,6 +60,7 @@ jobs:
       - uses: actions/checkout@v4.1.6
         with:
           fetch-depth: 0
+      - uses: ./.github/actions/linux-prereq
       - uses: actions/setup-java@v3
         with:
           distribution: 'temurin'
@@ -66,6 +79,7 @@ jobs:
       - 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
@@ -79,6 +93,9 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4.1.6
+        with:
+          fetch-depth: 0
+      - uses: ./.github/actions/linux-prereq
       - name: Run build script
         run: |
           cd build/web && printf "y" | ./build.sh presubmit
@@ -101,30 +118,20 @@ jobs:
     runs-on: macos-14-xlarge
     steps:
       - uses: actions/checkout@v4.1.6
-      - 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'
+          fetch-depth: 0
+      - uses: ./.github/actions/mac-prereq
       - name: Cache Mesa and deps
         id: mesa-cache
         uses: actions/cache@v4 # Use a specific version
         with:
-          path: |
-            $HOME/Library/Caches/Homebrew
-            mesa
-          key: ${{ runner.os }}-mesa-deps-${{ vars.MESA_VERSION }}
+          path: mesa
+          key: ${{ runner.os }}-mesa-deps-2-${{ vars.MESA_VERSION }}
       - name: Get Mesa
         id: mesa-prereq
-        env:
-          MESA_VERSION: ${{ vars.MESA_VERSION }}
-        run: |
-          bash test/utils/get_mesa.sh
+        run: bash test/utils/get_mesa.sh
       - name: Run Test
-        run: |
-          bash test/renderdiff/test.sh
+        run: bash test/renderdiff/test.sh
       - uses: actions/upload-artifact@v4
         with:
           name: presubmit-renderdiff-result
@@ -133,11 +140,13 @@ jobs:
   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: source ./build/linux/ci-common.sh && ./build.sh -W debug test_filamat filament
+        run: ./build.sh -W debug test_filamat filament
       - name: Run test
         run: ./out/cmake-debug/libs/filamat/test_filamat --gtest_filter=MaterialCompiler.Wgsl*
 
@@ -148,23 +157,16 @@ jobs:
       - uses: actions/checkout@v4.1.6
         with:
           fetch-depth: 0
-      - 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: Install prerequisites
+      - uses: ./.github/actions/mac-prereq
+      - name: Install clang-tidy and deps
         run: |
           pip install pyyaml
-          brew install llvm
-          sudo ln -s "$(brew --prefix llvm)/bin/clang-tidy" "/usr/local/bin/clang-tidy"
+          brew install llvm@${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
+        run: bash test/code-correctness/test.sh

.github/workflows/release.yml

@@ -29,8 +29,42 @@ on:
     types: [created]
 
 jobs:
-  build-desktop:
-    name: build-desktop
+  build-linux:
+    name: build-linux
+    runs-on: ubuntu-22.04-32core
+    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/linux-prereq
+      - name: Run build script
+        env:
+          TAG: ${{ steps.git_ref.outputs.tag }}
+        run: |
+          cd build/linux && printf "y" | ./build.sh release
+          cd ../..
+          mv out/filament-release-linux.tgz out/filament-${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: ${{ matrix.os }}
     if: github.event_name == 'release' || github.event.inputs.platform == 'desktop'
 
@@ -49,15 +83,14 @@ 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: ${{ steps.git_ref.outputs.tag }}
         run: |
-          WORKFLOW_OS=`echo \`uname\` | sed "s/Darwin/mac/" | tr [:upper:] [:lower:]`
-          cd build/$WORKFLOW_OS && printf "y" | ./build.sh release
+          cd build/mac && printf "y" | ./build.sh release
           cd ../..
-          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;
+          mv out/filament-release-darwin.tgz out/filament-${TAG}-mac.tgz
       - uses: actions/github-script@v6
         env:
           TAG: ${{ steps.git_ref.outputs.tag }}
@@ -84,6 +117,7 @@ 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 }}
@@ -121,6 +155,7 @@ jobs:
         with:
           distribution: 'temurin'
           java-version: '17'
+      - uses: ./.github/actions/linux-prereq
       - name: Run build script
         env:
           TAG: ${{ steps.git_ref.outputs.tag }}
@@ -171,6 +206,7 @@ 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

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

README.md

@@ -31,7 +31,7 @@ repositories {
 }
 
 dependencies {
-    implementation 'com.google.android.filament:filament-android:1.59.3'
+    implementation 'com.google.android.filament:filament-android:1.59.4'
 }
 ```
 
@@ -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', '~> 1.59.3'
+pod 'Filament', '~> 1.59.4'
 ```
 
 ## Documentation

RELEASE_NOTES.md

@@ -7,6 +7,9 @@ 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).
 
+## v1.59.5
+
+
 ## v1.59.4
 
 

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

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

android/gradle.properties

@@ -1,5 +1,5 @@
 GROUP=com.google.android.filament
-VERSION_NAME=1.59.3
+VERSION_NAME=1.59.4
 
 POM_DESCRIPTION=Real-time physically based rendering engine for Android.
 

build/android/build.sh

@@ -14,12 +14,12 @@ 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..."
-	      ;;
+              echo "Build will proceed..."
+              ;;
     n|N)
-    	  exit 0
-    	  ;;
-	  *)
+          exit 0
+          ;;
+          *)
         exit 0
         ;;
 esac
@@ -30,30 +30,27 @@ 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 0
+        exit 1
     fi
 fi
 
 # Unless explicitly specified, NDK version will be set to match exactly the required one
-FILAMENT_NDK_VERSION=${FILAMENT_NDK_VERSION:-$(cat `dirname $0`/ndk.version)}
+FILAMENT_NDK_VERSION=${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
 
 # Install the required NDK version specifically (if not present)
 if [[ ! -d "${ANDROID_HOME}/ndk/$FILAMENT_NDK_VERSION" ]]; then

build/android/ndk.version

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

build/common/ci-common.sh

@@ -2,5 +2,4 @@
 
 if [[ "$GITHUB_WORKFLOW" ]]; then
     echo "Running workflow $GITHUB_WORKFLOW (event: $GITHUB_EVENT_NAME, action: $GITHUB_ACTION)"
-    CONTINUOUS_INTEGRATION=true
 fi

build/common/get-ninja.sh

@@ -0,0 +1,18 @@
+#!/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

@@ -0,0 +1,6 @@
+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

build/ios/build.sh

@@ -28,7 +28,6 @@ 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 $0`/../.. > /dev/null
@@ -41,4 +40,3 @@ if [[ "${GENERATE_ARCHIVES}" ]]; then
 fi
 
 ./build.sh -i -p ios -c $BUILD_SIMULATOR $GENERATE_ARCHIVES $BUILD_DEBUG $BUILD_RELEASE
-

build/ios/ci-common.sh

@@ -1,6 +0,0 @@
-#!/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

@@ -32,7 +32,6 @@ set -x
 #     $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

build/linux/ci-common.sh

@@ -1,38 +0,0 @@
-#!/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
-
-    # 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
-fi

build/mac/build.sh

@@ -28,7 +28,6 @@ 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/mac/ci-common.sh

@@ -1,8 +0,0 @@
-#!/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

@@ -31,10 +31,16 @@ 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}/android/ndk.version" FILAMENT_NDK_VERSION)
-    string(REGEX MATCH "^\\d+" FILAMENT_NDK_VERSION ${FILAMENT_NDK_VERSION})
+    file(READ "${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()
 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

@@ -32,10 +32,16 @@ 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}/android/ndk.version" FILAMENT_NDK_VERSION)
-    string(REGEX MATCH "^\\d+" FILAMENT_NDK_VERSION ${FILAMENT_NDK_VERSION})
+    file(READ "${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()
 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

@@ -31,10 +31,16 @@ 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}/android/ndk.version" FILAMENT_NDK_VERSION)
-    string(REGEX MATCH "^\\d+" FILAMENT_NDK_VERSION ${FILAMENT_NDK_VERSION})
+    file(READ "${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()
 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

@@ -31,10 +31,16 @@ 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}/android/ndk.version" FILAMENT_NDK_VERSION)
-    string(REGEX MATCH "^\\d+" FILAMENT_NDK_VERSION ${FILAMENT_NDK_VERSION})
+    file(READ "${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()
 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/ci-common.sh

@@ -1,16 +1,4 @@
 #!/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

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://twitter.com/darthmoosious">@darthmoosious</a></li></ul>
+<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>
 
 <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>
@@ -259,26 +259,27 @@ 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">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">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">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">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">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">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">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">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>
+<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">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>
 </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>
@@ -1486,10 +1487,13 @@ 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 also have an optional <code>precision</code>, which can be
+      name must be a valid GLSL identifier. Entries 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>.
+      <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. 
 
 </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>
@@ -1752,7 +1756,13 @@ 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><p></p><pre class="listing tilde"><code><span class="line">material {</span>
+</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>
 <span class="line">    parameters : [</span>
 <span class="line">        {</span>
 <span class="line">           type : sampler2d,</span>
@@ -1779,7 +1789,7 @@ non-shader data.
 
 </p><dl><dt>Type</dt><dd><p>     array of <code>string</code>
 
-</p></dd><dt>Value</dt><dd><p>      Up to 4 strings, each must be a valid GLSL identifier.
+</p></dd><dt>Value</dt><dd><p>      Up to 5 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
@@ -1794,7 +1804,14 @@ 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><p></p><pre class="listing tilde"><code><span class="line">material {</span>
+</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>
 <span class="line">    name : Skybox,</span>
 <span class="line">    parameters : [</span>
 <span class="line">        {</span>

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&#x27;s ECS.</td>
+<td align="left">Singleton used for constructing entities in Filament'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&#x27;s native window.</td>
+<td align="left">Represents the platform'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&#x27;s native rendering surface.</td>
+<td align="left">Represents the platform'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&#x27;s Java bindings.</p>
+This would also be more consistent with Filament'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&#x27;s ECS.</p>
+<p>Singleton used for constructing entities in Filament'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&#x27;s <code>delete</code> method when you&#x27;re done with it.</p>
+<p>Be sure to call the instance's <code>delete</code> method when you'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&#x27;s <code>delete</code> method when you&#x27;re done with it.</p>
+<p>Be sure to call the instance's <code>delete</code> method when you're done with it.</p>
 </div>
 <div class='classdoc'>
 <h2>class <a id='Renderer' href='#Renderer'>Renderer</a></h2>
-<p>Represents the platform&#x27;s native window.</p>
+<p>Represents the platform'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&#x27;s native rendering surface.</p>
+<p>Represents the platform'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&#x27;s <code>delete</code> method when you&#x27;re done with it.</p>
+<p>Be sure to call the instance's <code>delete</code> method when you'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&#x27;s of required assets.</li>
+<li>Array of strings containing URL'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&#x27;s invoked after each asset is downloaded.</li>
+<li>optional callback that'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&#x27;s of required assets.</li>
+<li>Array of strings containing URL'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&#x27;s and a
+<p>All JavaScript clients must call the init function, passing in a list of asset URL'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&#x27;s that absolutely must
+WebAssembly module has been loaded. Clients should only pass asset URL'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&#x27;s to Uint8Array objects.</p>
+object, which contains a mapping from URL'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&#x27;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'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&#x27;s try out <code>matc</code>. Create the following file in your favorite text editor and call it
+<p>Let'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 -a opengl -p mobile -o plastic.filamat plastic.mat
+<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
 </pre></div>
 
-<p>You should now have a material archive in your working directory, which we&#x27;ll use later in the
+<p>You should now have a material archive in your working directory, which we'll use later in the
 tutorial.</p>
 <h2>Bake environment map</h2>
-<p>Next we&#x27;ll use Filament&#x27;s <code>cmgen</code> tool to consume a HDR environment map in latlong format, and
+<p>Next we'll use Filament'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 -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
+<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
 </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: #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>
+<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>
 
-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$Type;<span style="color: #bbbbbb"></span>
+Filament.init([<span style="color: #BBB"> </span>filamat_url,<span style="color: #BBB"> </span>ibl_url,<span style="color: #BBB"> </span>sky_url<span style="color: #BBB"> </span>],<span style="color: #BBB"> </span>()<span style="color: #BBB"> </span>=&gt;<span style="color: #BBB"> </span>{
+<span style="color: #BBB">  </span><span style="color: #3D7B7B; font-style: italic">// Create some global aliases to enums for convenience.</span>
+<span style="color: #BBB">  </span><span style="color: #008000">window</span>.VertexAttribute<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.VertexAttribute;
+<span style="color: #BBB">  </span><span style="color: #008000">window</span>.AttributeType<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.VertexBuffer$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;
 
-<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: #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: #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: #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: #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: #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: #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><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>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>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>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>
+<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>}
+}
 </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&#x27;s create a material instance from the package that we built at the beginning the tutorial.
+<p>Next let'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: #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>
+<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();
 
-<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>
+<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>);
 </pre></div>
 
-<p>The next step is to create a renderable for the sphere. To help with this, we&#x27;ll use the <code>IcoSphere</code>
+<p>The next step is to create a renderable for the sphere. To help with this, we'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&#x27;s go ahead use these arrays to build the vertex buffer and index buffer. Replace <strong>create
+<p>Let'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: #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>
+<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);
 
-<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>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>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>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>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>
+<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);
 
-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>
+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);
 
-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>
+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);
 </pre></div>
 
-<p>At this point, the app is rendering a sphere, but it is black so it doesn&#x27;t show up. To prove that
+<p>At this point, the app is rendering a sphere, but it is black so it doesn'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: #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>
+<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);
 
-<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>
+<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);
 </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&#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>
+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;
 
-<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: #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: #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">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">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: #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: #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">// 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">// 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>
+<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);
 
-scene.setIndirectLight(indirectLight);<span style="color: #bbbbbb"></span>
+scene.setIndirectLight(indirectLight);
 </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: #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>
+<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);
 </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&#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>
+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);
 
-<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>
+<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);
 </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: #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>
+<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);
 </pre></div>
 
-<p>That&#x27;s it, we now have a shiny red ball floating in an environment! The complete JavaScript file is
+<p>That'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&#x27;ll take a closer look at textures and interaction.</p>
+<p>In the <a href="tutorial_suzanne.html">next tutorial</a>, we'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&#x27;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'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&#x27;ll also be using <code>filamesh</code> and <code>mipgen</code>.</p>
+we'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&#x27;s create a compressed filamesh file for suzanne by
+called <code>filamesh</code> for simple use cases. Let'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 --compress monkey.obj suzanne.filamesh
+<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
 </pre></div>
 
 <h2>Create mipmapped textures</h2>
-<p>Next, let&#x27;s create mipmapped KTX files using filament&#x27;s <code>mipgen</code> tool. We&#x27;ll create compressed and
+<p>Next, let's create mipmapped KTX files using filament's <code>mipgen</code> tool. We'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 albedo.png albedo.ktx2
-mipgen --compression<span style="color: #666666">=</span>uastc albedo.png albedo.ktx2
+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
 
 <span style="color: #3D7B7B; font-style: italic"># Create mipmaps for the normal map and a compressed variant.</span>
-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
+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
 
 <span style="color: #3D7B7B; font-style: italic"># Create mipmaps for the single-component roughness map and a compressed variant.</span>
-mipgen --grayscale roughness.png roughness.ktx
-mipgen --grayscale --compression<span style="color: #666666">=</span>uastc roughness.png roughness.ktx2
+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
 
 <span style="color: #3D7B7B; font-style: italic"># Create mipmaps for the single-component metallic map and a compressed variant.</span>
-mipgen --grayscale metallic.png metallic.ktx
-mipgen --grayscale --compression<span style="color: #666666">=</span>uastc metallic.png metallic.ktx2
+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
 
 <span style="color: #3D7B7B; font-style: italic"># Create mipmaps for the single-component occlusion map and a compressed variant.</span>
-mipgen --grayscale ao.png ao.ktx
-mipgen --grayscale --compression<span style="color: #666666">=</span>uastc ao.png ao.ktx2
+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
 </pre></div>
 
-<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>
+<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>
 <h2>Bake environment map</h2>
-<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>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>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 -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> -
+<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>-
 
-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
+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
 </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&#x27;ll create a material that uses textures for several parameters.</p>
+demo, we'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 -a opengl -p mobile -o textured.filamat textured.mat
+<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
 </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><span style="color: #bbbbbb"></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>
 
-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>
+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>]);
+});
 
-<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: #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: #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>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>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: #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: #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: #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: #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">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">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">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">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><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>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>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>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>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><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$Fov,<span style="color: #bbbbbb"> </span>fov<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span>aspect<span style="color: #bbbbbb"> </span><span style="color: #666666">&lt;</span><span style="color: #bbbbbb"> </span><span style="color: #666666">1</span><span style="color: #bbbbbb"> </span><span style="color: #666666">?</span><span style="color: #bbbbbb"> </span>Fov.HORIZONTAL<span style="color: #bbbbbb"> </span><span style="color: #666666">:</span><span style="color: #bbbbbb"> </span>Fov.VERTICAL;<span style="color: #bbbbbb"></span>
-<span style="color: #bbbbbb">        </span><span style="color: #008000; font-weight: bold">this</span>.camera.setProjectionFov(<span style="color: #666666">45</span>,<span style="color: #bbbbbb"> </span>aspect,<span style="color: #bbbbbb"> </span><span style="color: #666666">1.0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">10.0</span>,<span style="color: #bbbbbb"> </span>fov);<span style="color: #bbbbbb"></span>
-<span style="color: #bbbbbb">    </span>}<span style="color: #bbbbbb"></span>
-}<span style="color: #bbbbbb"></span>
+<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>aspect<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>width<span style="color: #BBB"> </span><span style="color: #666">/</span><span style="color: #BBB"> </span>height;
+<span style="color: #BBB">        </span><span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>Fov<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.Camera$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>}
+}
 </pre></div>
 
-<p>Our app will only require a subset of assets to be present for <code>App</code> construction. We&#x27;ll download
+<p>Our app will only require a subset of assets to be present for <code>App</code> construction. We'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: #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>
+<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>);
 
-<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">${</span>texture_suffix<span style="color: #A45A77; font-weight: bold">}</span><span style="color: #BA2121">.ktx`</span>;<span style="color: #bbbbbb"></span>
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>filamat_url<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #BA2121">&#39;textured.filamat&#39;</span>;<span style="color: #bbbbbb"></span>
-<span style="color: #008000; font-weight: bold">const</span><span style="color: #bbbbbb"> </span>filamesh_url<span style="color: #bbbbbb"> </span><span style="color: #666666">=</span><span style="color: #bbbbbb"> </span><span style="color: #BA2121">&#39;suzanne.filamesh&#39;</span>;<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>environ<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #BA2121">&#39;venetian_crossroads_2k&#39;</span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>ibl_url<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span><span style="color: #BA2121">`</span><span style="color: #A45A77; font-weight: bold">${</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>;
 </pre></div>
 
 <h2>Create skybox and IBL</h2>
-<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>
+<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);
 </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&#x27;ll invoke the <code>Filament.fetch</code> function from within the app constructor. This function is
+<p>Next we'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&#x27;ll make several <code>setTextureParameter</code> calls on the material instance, then we&#x27;ll
+<p>In our callback, we'll make several <code>setTextureParameter</code> calls on the material instance, then we'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: #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>
+<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);
 
-<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">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">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: #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: #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: #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: #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>
+<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);
+});
 </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: #666666">=</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: #666">=</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: #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>
+<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>});
 </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: #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>
+<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>();
 </pre></div>
 
-<p>That&#x27;s it, we now have a fast-loading interactive demo. The complete JavaScript file is available
+<p>That'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&#x27;s also used to generate the JavaScript for the above demo.
+web page, it'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&#x27;ll often see
+(generating JS). In the code samples, you'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: #666666">=</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: #666">=</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: #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">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">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: #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">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">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: #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>
+<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>}
+}
 
-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>
+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>);
 </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&#x27;ll do most of the
+become ready. In our callback, we simply instantiated the <code>App</code> object, since we'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&#x27;ll learn more about material packages in the next tutorial.</p>
+that define a PBR material. We'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 -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>
+<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>
 </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&#x27;s simple server in production since it does not serve WebAssembly files
+<p>Take care not to use Python'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&#x27;s start adding
+<p>We now have a basic skeleton that can respond to paint and resize events. Let'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: #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>
+<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);
 </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&#x27;s go ahead and create a scene, then add a blank entity called <code>triangle</code> into the
+entities. Let'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: #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>
+<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);
 </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&#x27;ll create two typed arrays: a positions array with XY coordinates for each vertex, and a
+<p>Next we'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: #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>
+<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>),
+]);
 
-<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>
+<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>]);
 </pre></div>
 
-<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>
+<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);
 
-<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>
+<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);
 </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&#x27;ll construct an index buffer. The index buffer for our triangle is trivial: it simply holds
+<p>Next we'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: #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$IndexType.USHORT)<span style="color: #bbbbbb"></span>
-<span style="color: #bbbbbb">    </span>.build(engine);<span style="color: #bbbbbb"></span>
+<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%;"><span></span><span style="color: #008000; font-weight: bold">this</span>.ib<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.IndexBuffer.Builder()
+<span style="color: #BBB">    </span>.indexCount(<span style="color: #666">3</span>)
+<span style="color: #BBB">    </span>.bufferType(Filament.IndexBuffer$IndexType.USHORT)
+<span style="color: #BBB">    </span>.build(engine);
 
-<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>
+<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>]));
 </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&#x27;s construct an actual <code>Material</code> from the material package that was downloaded (the
+<p>Next let'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&#x27;ll learn more about material instances in the
+parameters, and they can be bound to renderables. We'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: #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>
+<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);
 </pre></div>
 
-<p>Next let&#x27;s wrap up the initialization routine by creating the swap chain, renderer, camera, and
+<p>Next let'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: #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>
+<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);
 
-<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">// 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">// 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>
+<span style="color: #3D7B7B; font-style: italic">// Adjust the initial viewport:</span>
+<span style="color: #008000; font-weight: bold">this</span>.resize();
 </pre></div>
 
-<p>At this point, we&#x27;re done creating all Filament entities, and the code should run without errors.
+<p>At this point, we'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: #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>
+<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);
+}
 </pre></div>
 
-<p>Let&#x27;s flesh this out by rotating the triangle and invoking the Filament renderer. Add the following
+<p>Let'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: #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>
+<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>();
 
-<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>
+<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);
 </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: #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>
+<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]);
 
-<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$Projection;<span style="color: #bbbbbb"></span>
-<span style="color: #008000; font-weight: bold">this</span>.camera.setProjection(Projection.ORTHO,<span style="color: #bbbbbb"> </span><span style="color: #666666">-</span>aspect,<span style="color: #bbbbbb"> </span>aspect,<span style="color: #bbbbbb"> </span><span style="color: #666666">-1</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">1</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">0</span>,<span style="color: #bbbbbb"> </span><span style="color: #666666">1</span>);<span style="color: #bbbbbb"></span>
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>aspect<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>width<span style="color: #BBB"> </span><span style="color: #666">/</span><span style="color: #BBB"> </span>height;
+<span style="color: #008000; font-weight: bold">const</span><span style="color: #BBB"> </span>Projection<span style="color: #BBB"> </span><span style="color: #666">=</span><span style="color: #BBB"> </span>Filament.Camera$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>);
 </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&#x27;ll take a closer look at Filament materials and 3D rendering.</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>
 
 </body>
 </html>

filament/backend/CMakeLists.txt

@@ -5,6 +5,18 @@ set(TARGET backend)
 set(PUBLIC_HDR_DIR include)
 set(GENERATION_ROOT ${CMAKE_CURRENT_BINARY_DIR})
 
+# ==================================================================================================
+# Compilation options
+# ==================================================================================================
+#
+set(BACKEND_SANITIZATION "" CACHE STRING "Sanitization option")
+set_property(CACHE BACKEND_SANITIZATION PROPERTY STRINGS ";ASAN")
+
+set(BACKEND_SANITIZERS)
+if (BACKEND_SANITIZATION STREQUAL "ASAN")
+    set(BACKEND_SANITIZERS -fsanitize=address)
+endif()
+
 # ==================================================================================================
 # Sources and headers
 # ==================================================================================================
@@ -259,6 +271,8 @@ if (FILAMENT_SUPPORTS_WEBGPU)
             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
@@ -470,6 +484,7 @@ target_compile_options(${TARGET} PRIVATE
         ${OSMESA_COMPILE_FLAGS}
         $<$<CONFIG:Release>:${OPTIMIZATION_FLAGS}>
         $<$<AND:$<PLATFORM_ID:Darwin>,$<CONFIG:Release>>:${DARWIN_OPTIMIZATION_FLAGS}>
+        ${BACKEND_SANITIZERS}
 )
 
 if (FILAMENT_SUPPORTS_METAL)
@@ -480,6 +495,8 @@ if (FILAMENT_SUPPORTS_WEBGPU)
     target_compile_definitions(${TARGET} PRIVATE $<$<BOOL:${FILAMENT_WEBGPU_IMMEDIATE_ERROR_HANDLING}>:FILAMENT_WEBGPU_IMMEDIATE_ERROR_HANDLING>)
 endif()
 
+target_link_options(${TARGET} PRIVATE ${BACKEND_SANITIZERS})
+
 target_link_libraries(${TARGET} PRIVATE
         ${OSMESA_LINKER_FLAGS}
         $<$<AND:$<PLATFORM_ID:Linux>,$<CONFIG:Release>>:${LINUX_LINKER_OPTIMIZATION_FLAGS}>
@@ -549,6 +566,8 @@ if (APPLE AND NOT IOS)
          test/test_RenderExternalImage.cpp)
     add_library(backend_test STATIC ${BACKEND_TEST_SRC})
     target_link_libraries(backend_test PUBLIC ${BACKEND_TEST_LIBS})
+    target_compile_options(backend_test PRIVATE ${BACKEND_SANITIZERS})
+    target_link_options(backend_test PRIVATE ${BACKEND_SANITIZERS})
 
     set(BACKEND_TEST_DEPS
             OSDependent
@@ -587,6 +606,7 @@ if (APPLE AND NOT IOS)
        # linker from removing "unused" symbols.
        target_link_libraries(backend_test_mac PRIVATE -force_load backend_test)
        set_target_properties(backend_test_mac PROPERTIES FOLDER Tests)
+       target_link_options(backend_test_mac PRIVATE ${BACKEND_SANITIZERS})
 
        # This is needed after XCode 15.3
        set_target_properties(backend_test_mac PROPERTIES BUILD_WITH_INSTALL_RPATH TRUE)
@@ -596,6 +616,8 @@ endif()
 
 if (LINUX)
     add_executable(backend_test_linux test/linux_runner.cpp ${BACKEND_TEST_SRC})
+    target_compile_options(backend_test_linux PRIVATE ${BACKEND_SANITIZERS})
+    target_link_options(backend_test_linux PRIVATE ${BACKEND_SANITIZERS})
     target_link_libraries(backend_test_linux PRIVATE ${BACKEND_TEST_LIBS})
     set_target_properties(backend_test_linux PROPERTIES FOLDER Tests)
 endif()

filament/backend/include/backend/DriverEnums.h

@@ -39,6 +39,7 @@
 
 #include <stddef.h>
 #include <stdint.h>
+#include <utils/StaticString.h>
 
 /**
  * Types and enums used by filament's driver.
@@ -1139,6 +1140,7 @@ struct ExternalSamplerDatum {
 static_assert(sizeof(ExternalSamplerDatum) == 12);
 
 struct DescriptorSetLayout {
+    std::variant<utils::StaticString, utils::CString, std::monostate> label;
     utils::FixedCapacityVector<DescriptorSetLayoutBinding> bindings;
 
 //  TODO: uncomment when needed
@@ -1455,6 +1457,11 @@ 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/src/opengl/OpenGLContext.cpp

@@ -340,7 +340,7 @@ void OpenGLContext::setDefaultState() noexcept {
         GL_DITHER,
         GL_SAMPLE_ALPHA_TO_COVERAGE,
         GL_SAMPLE_COVERAGE,
-        GL_POLYGON_OFFSET_FILL,  
+        GL_POLYGON_OFFSET_FILL,
     };
 
     UTILS_NOUNROLL
@@ -600,6 +600,12 @@ void OpenGLContext::initBugs(Bugs* bugs, Extensions const& exts,
         // For Mozilla, the issue appears to be observed regardless of whether the renderer is
         // ANGLE or not. (b/376125497)
         bugs->rebind_buffer_after_deletion = true;
+
+        // We disable depth precache for the default material on Mozilla FireFox. It struggles with
+        // slow shader compile/link times if the shader contains large arrays of uniform. Some depth
+        // program variants have skinning-related data, which incurs this slowness and end up
+        // causing an initial startup stalls. (b/392917621)
+        bugs->disable_depth_precache_for_default_material = true;
     }
 
 #ifdef BACKEND_OPENGL_VERSION_GLES
@@ -1069,41 +1075,41 @@ void OpenGLContext::resetState() noexcept {
     glCullFace(state.raster.cullFace);
     glBlendEquationSeparate(state.raster.blendEquationRGB, state.raster.blendEquationA);
     glBlendFuncSeparate(
-        state.raster.blendFunctionSrcRGB, 
+        state.raster.blendFunctionSrcRGB,
         state.raster.blendFunctionDstRGB,
         state.raster.blendFunctionSrcA,
         state.raster.blendFunctionDstA
     );
     glColorMask(
-        state.raster.colorMask, 
-        state.raster.colorMask, 
-        state.raster.colorMask, 
+        state.raster.colorMask,
+        state.raster.colorMask,
+        state.raster.colorMask,
         state.raster.colorMask
     );
     glDepthMask(state.raster.depthMask);
     glDepthFunc(state.raster.depthFunc);
-    
+
     // state.stencil
     glStencilFuncSeparate(
-        GL_FRONT, 
-        state.stencil.front.func.func, 
-        state.stencil.front.func.ref, 
+        GL_FRONT,
+        state.stencil.front.func.func,
+        state.stencil.front.func.ref,
         state.stencil.front.func.mask
     );
     glStencilFuncSeparate(
-        GL_BACK, 
-        state.stencil.back.func.func, 
-        state.stencil.back.func.ref, 
+        GL_BACK,
+        state.stencil.back.func.func,
+        state.stencil.back.func.ref,
         state.stencil.back.func.mask
     );
     glStencilOpSeparate(
-        GL_FRONT, 
+        GL_FRONT,
         state.stencil.front.op.sfail,
         state.stencil.front.op.dpfail,
         state.stencil.front.op.dppass
     );
     glStencilOpSeparate(
-        GL_BACK, 
+        GL_BACK,
         state.stencil.back.op.sfail,
         state.stencil.back.op.dpfail,
         state.stencil.back.op.dppass
@@ -1206,9 +1212,9 @@ void OpenGLContext::resetState() noexcept {
 
     // state.window
     glScissor(
-        state.window.scissor.x, 
-        state.window.scissor.y, 
-        state.window.scissor.z, 
+        state.window.scissor.x,
+        state.window.scissor.y,
+        state.window.scissor.z,
         state.window.scissor.w
     );
     glViewport(

filament/backend/src/opengl/OpenGLContext.h

@@ -328,6 +328,11 @@ public:
         // bugs or performance issues.
         bool force_feature_level0;
 
+        // 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.
+        bool disable_depth_precache_for_default_material;
 
     } bugs = {};
 
@@ -569,6 +574,9 @@ private:
             {   bugs.force_feature_level0,
                     "force_feature_level0",
                     ""},
+            {   bugs.disable_depth_precache_for_default_material,
+                    "disable_depth_precache_for_default_material",
+                    ""},
     }};
 
     // this is chosen to minimize code size

filament/backend/src/opengl/OpenGLDriver.cpp

@@ -2435,6 +2435,8 @@ bool OpenGLDriver::isWorkaroundNeeded(Workaround workaround) {
             return mContext.bugs.disable_blit_into_texture_array;
         case Workaround::POWER_VR_SHADER_WORKAROUNDS:
             return mContext.bugs.powervr_shader_workarounds;
+        case Workaround::DISABLE_DEPTH_PRECACHE_FOR_DEFAULT_MATERIAL:
+            return mContext.bugs.disable_depth_precache_for_default_material;
         default:
             return false;
     }

filament/backend/src/webgpu/WGPUProgram.cpp

@@ -27,6 +27,7 @@
 
 #include <webgpu/webgpu_cpp.h>
 
+#include <algorithm>
 #include <sstream>
 #include <string_view>
 #include <vector>
@@ -66,71 +67,123 @@ namespace {
     };
     wgpu::ShaderModule module = device.CreateShaderModule(&descriptor);
     FILAMENT_CHECK_POSTCONDITION(module != nullptr) << "Failed to create " << descriptor.label;
-    module.GetCompilationInfo(wgpu::CallbackMode::AllowSpontaneous,
-            [&descriptor](auto const& status, wgpu::CompilationInfo const* info) {
-                switch (status) {
-                    case wgpu::CompilationInfoRequestStatus::CallbackCancelled:
-                        FWGPU_LOGW << "Shader compilation info callback cancelled for "
-                                   << descriptor.label << "?" << utils::io::endl;
-                        return;
-                    case wgpu::CompilationInfoRequestStatus::Success:
-                        break;
-                }
-                if (info != nullptr) {
-                    std::stringstream errorStream;
-                    int errorCount = 0;
-                    for (size_t msgIndex = 0; msgIndex < info->messageCount; msgIndex++) {
-                        wgpu::CompilationMessage const& message = info->messages[msgIndex];
-                        switch (message.type) {
-                            case wgpu::CompilationMessageType::Info:
-                                FWGPU_LOGI << descriptor.label << ": " << message.message
-                                           << " line#:" << message.lineNum
-                                           << " linePos:" << message.linePos
-                                           << " offset:" << message.offset
-                                           << " length:" << message.length << utils::io::endl;
-                                break;
-                            case wgpu::CompilationMessageType::Warning:
-                                FWGPU_LOGW << "Warning compiling " << descriptor.label << ": "
-                                           << message.message << " line#:" << message.lineNum
-                                           << " linePos:" << message.linePos
-                                           << " offset:" << message.offset
-                                           << " length:" << message.length << utils::io::endl;
-                                break;
-                            case wgpu::CompilationMessageType::Error:
-                                errorCount++;
-                                errorStream << "Error " << errorCount << " : "
-                                            << std::string_view(message.message)
-                                            << " line#:" << message.lineNum
-                                            << " linePos:" << message.linePos
-                                            << " offset:" << message.offset
-                                            << " length:" << message.length << "\n";
+
+    wgpu::Instance instance = device.GetAdapter().GetInstance();
+    instance.WaitAny(
+            module.GetCompilationInfo(wgpu::CallbackMode::WaitAnyOnly,
+                    [&descriptor](auto const& status,
+                            wgpu::CompilationInfo const* info) {
+                        switch (status) {
+                            case wgpu::CompilationInfoRequestStatus::CallbackCancelled:
+                                FWGPU_LOGW << "Shader compilation info callback cancelled for "
+                                           << descriptor.label << "?" << utils::io::endl;
+                                return;
+                            case wgpu::CompilationInfoRequestStatus::Success:
                                 break;
                         }
-                    }
-                    FILAMENT_CHECK_POSTCONDITION(errorCount < 1)
-                            << errorCount << " error(s) compiling " << descriptor.label << ":\n"
-                            << errorStream.str();
-                }
-                FWGPU_LOGD << descriptor.label << " compiled successfully" << utils::io::endl;
-            });
+                        if (info != nullptr) {
+                            std::stringstream errorStream;
+                            int errorCount = 0;
+                            for (size_t msgIndex = 0; msgIndex < info->messageCount; msgIndex++) {
+                                wgpu::CompilationMessage const& message = info->messages[msgIndex];
+                                switch (message.type) {
+                                    case wgpu::CompilationMessageType::Info:
+                                        FWGPU_LOGI << descriptor.label << ": " << message.message
+                                                   << " line#:" << message.lineNum
+                                                   << " linePos:" << message.linePos
+                                                   << " offset:" << message.offset
+                                                   << " length:" << message.length
+                                                   << utils::io::endl;
+                                        break;
+                                    case wgpu::CompilationMessageType::Warning:
+                                        FWGPU_LOGW
+                                                << "Warning compiling " << descriptor.label << ": "
+                                                << message.message << " line#:" << message.lineNum
+                                                << " linePos:" << message.linePos
+                                                << " offset:" << message.offset
+                                                << " length:" << message.length << utils::io::endl;
+                                        break;
+                                    case wgpu::CompilationMessageType::Error:
+                                        errorCount++;
+                                        errorStream << "Error " << errorCount << " : "
+                                                    << std::string_view(message.message)
+                                                    << " line#:" << message.lineNum
+                                                    << " linePos:" << message.linePos
+                                                    << " offset:" << message.offset
+                                                    << " length:" << message.length << "\n";
+                                        break;
+                                }
+                            }
+                            FILAMENT_CHECK_POSTCONDITION(errorCount < 1)
+                                    << errorCount << " error(s) compiling " << descriptor.label
+                                    << ":\n"
+                                    << errorStream.str();
+                        }
+                        FWGPU_LOGD << descriptor.label << " compiled successfully"
+                                   << utils::io::endl;
+                    }),
+            UINT16_MAX);
     return module;
 }
 
+// This is a 1 to 1 mapping of the ReservedSpecializationConstants enum in EngineEnums.h
+// The _hack is a workaround until https://issues.chromium.org/issues/42250586 is resolved
+// This workaround is the same one being used on the generateSpecializationConstant() function
+wgpu::StringView getSpecConstantStringId(uint32_t id) {
+    switch (id) {
+        case 0:
+            return "0";// BACKEND_FEATURE_LEVEL_hack
+        case 1:
+            return "1";// CONFIG_MAX_INSTANCES_hack
+        case 2:
+            return "2";// ONFIG_STATIC_TEXTURE_TARGET_WORKAROUND_hack
+        case 3:
+            return "3";// CONFIG_SRGB_SWAPCHAIN_EMULATION_hack
+        case 4:
+            return "4";// CONFIG_FROXEL_BUFFER_HEIGHT_hack
+        case 5:
+            return "5";// CONFIG_POWER_VR_SHADER_WORKAROUNDS_hack
+        case 6:
+            return "6";// CONFIG_DEBUG_DIRECTIONAL_SHADOWMAP_hack
+        case 7:
+            return "7";// CONFIG_DEBUG_FROXEL_VISUALIZATION_hack
+        case 8:
+            return "8";// CONFIG_STEREO_EYE_COUNT_hack
+        case 9:
+            return "9";// CONFIG_SH_BANDS_COUNT_hack
+        case 10:
+            return "10";// CONFIG_SHADOW_SAMPLING_METHOD_hack
+        default:
+            PANIC_POSTCONDITION("Unknown/unhandled spec constant key/id: %d", id);
+    }
+}
+
 std::vector<wgpu::ConstantEntry> convertConstants(
         utils::FixedCapacityVector<filament::backend::Program::SpecializationConstant> const&
                 constantsInfo) {
-    std::vector<wgpu::ConstantEntry> constants(constantsInfo.size());
-    for (size_t i = 0; i < constantsInfo.size(); i++) {
-        filament::backend::Program::SpecializationConstant const& specConstant = constantsInfo[i];
-        wgpu::ConstantEntry& constantEntry = constants[i];
-        constantEntry.key = wgpu::StringView(std::to_string(specConstant.id));
-        if (auto* v = std::get_if<int32_t>(&specConstant.value)) {
-            constantEntry.value = static_cast<double>(*v);
-        } else if (auto* f = std::get_if<float>(&specConstant.value)) {
-            constantEntry.value = static_cast<double>(*f);
-        } else if (auto* b = std::get_if<bool>(&specConstant.value)) {
-            constantEntry.value = *b ? 0.0 : 1.0;
+    std::vector<wgpu::ConstantEntry> constants;
+    constants.reserve(constantsInfo.size());
+    for (filament::backend::Program::SpecializationConstant const& constant: constantsInfo) {
+        // CONFIG_MAX_INSTANCES (1) and CONFIG_FROXEL_BUFFER_HEIGHT (4) will not be present
+        // as constant overrides in the generated WGSL, because WGSL doesn't support specialization
+        // constants as an array length
+        // More information at https://github.com/gpuweb/gpuweb/issues/572#issuecomment-649760005
+        // CONFIG_SRGB_SWAPCHAIN_EMULATION (3) is being skipped all together since it's only
+        // included for the case of mFeatureLevel == FeatureLevel::FEATURE_LEVEL_0, which should
+        // not be possible for WebGPU
+        if (constant.id == 1 || constant.id == 3 || constant.id == 4) {
+            continue;
         }
+        double value = 0.0;
+        if (auto* v = std::get_if<int32_t>(&constant.value)) {
+            value = static_cast<double>(*v);
+        } else if (auto* f = std::get_if<float>(&constant.value)) {
+            value = static_cast<double>(*f);
+        } else if (auto* b = std::get_if<bool>(&constant.value)) {
+            value = *b ? 0.0 : 1.0;
+        }
+        constants.push_back(
+                wgpu::ConstantEntry{ .key = getSpecConstantStringId(constant.id), .value = value });
     }
     return constants;
 }

filament/backend/src/webgpu/WebGPUDriver.cpp

@@ -16,6 +16,7 @@
 
 #include "webgpu/WebGPUDriver.h"
 
+#include "WebGPUPipelineCreation.h"
 #include "WebGPUSwapChain.h"
 #include <backend/platforms/WebGPUPlatform.h>
 
@@ -24,18 +25,20 @@
 #include "private/backend/Dispatcher.h"
 #include <backend/DriverEnums.h>
 #include <backend/Handle.h>
+#include <backend/TargetBufferInfo.h>
 
 #include <math/mat3.h>
 #include <utils/CString.h>
+#include <utils/Panic.h>
 #include <utils/ostream.h>
 
 #include <dawn/webgpu_cpp_print.h>
 #include <webgpu/webgpu_cpp.h>
 
 #include <algorithm>
+#include <array>
 #include <cstddef>
 #include <cstdint>
-#include <memory>
 #include <sstream>
 #include <string_view>
 #include <utility>
@@ -289,7 +292,22 @@ void WebGPUDriver::endFrame(uint32_t frameId) {
 void WebGPUDriver::flush(int) {
 }
 
-void WebGPUDriver::finish(int) {
+void WebGPUDriver::finish(int /* dummy */) {
+    if (mCommandEncoder != nullptr) {
+        // submit the command buffer thus far...
+        assert_invariant(mRenderPassEncoder == nullptr);
+        wgpu::CommandBufferDescriptor commandBufferDescriptor{
+            .label = "command_buffer",
+        };
+        mCommandBuffer = mCommandEncoder.Finish(&commandBufferDescriptor);
+        assert_invariant(mCommandBuffer);
+        mQueue.Submit(1, &mCommandBuffer);
+        mCommandBuffer = nullptr;
+        // create a new command buffer encoder to continue recording the next command for frame...
+        wgpu::CommandEncoderDescriptor commandEncoderDescriptor = { .label = "command_encoder" };
+        mCommandEncoder = mDevice.CreateCommandEncoder(&commandEncoderDescriptor);
+        assert_invariant(mCommandEncoder);
+    }
 }
 
 void WebGPUDriver::destroyRenderPrimitive(Handle<HwRenderPrimitive> rph) {
@@ -371,9 +389,7 @@ Handle<HwTexture> WebGPUDriver::createTextureS() noexcept {
     return allocHandle<WGPUTexture>();
 }
 
-Handle<HwTexture> WebGPUDriver::importTextureS() noexcept {
-    return Handle<HwTexture>((Handle<HwTexture>::HandleId) mNextFakeHandle++);
-}
+Handle<HwTexture> WebGPUDriver::importTextureS() noexcept { return allocHandle<WGPUTexture>(); }
 
 Handle<HwProgram> WebGPUDriver::createProgramS() noexcept {
     return allocHandle<WGPUProgram>();
@@ -392,7 +408,7 @@ Handle<HwIndexBuffer> WebGPUDriver::createIndexBufferS() noexcept {
 }
 
 Handle<HwTexture> WebGPUDriver::createTextureViewS() noexcept {
-    return Handle<HwTexture>((Handle<HwTexture>::HandleId) mNextFakeHandle++);
+    return allocHandle<WGPUTexture>();
 }
 
 Handle<HwBufferObject> WebGPUDriver::createBufferObjectS() noexcept {
@@ -420,7 +436,7 @@ Handle<HwVertexBufferInfo> WebGPUDriver::createVertexBufferInfoS() noexcept {
 }
 
 Handle<HwTexture> WebGPUDriver::createTextureViewSwizzleS() noexcept {
-    return Handle<HwTexture>((Handle<HwTexture>::HandleId) mNextFakeHandle++);
+    return allocHandle<WGPUTexture>();
 }
 
 Handle<HwRenderTarget> WebGPUDriver::createDefaultRenderTargetS() noexcept {
@@ -432,15 +448,15 @@ Handle<HwDescriptorSetLayout> WebGPUDriver::createDescriptorSetLayoutS() noexcep
 }
 
 Handle<HwTexture> WebGPUDriver::createTextureExternalImageS() noexcept {
-    return Handle<HwTexture>((Handle<HwTexture>::HandleId) mNextFakeHandle++);
+    return allocHandle<WGPUTexture>();
 }
 
 Handle<HwTexture> WebGPUDriver::createTextureExternalImage2S() noexcept {
-    return Handle<HwTexture>((Handle<HwTexture>::HandleId) mNextFakeHandle++);
+    return allocHandle<WGPUTexture>();
 }
 
 Handle<HwTexture> WebGPUDriver::createTextureExternalImagePlaneS() noexcept {
-    return Handle<HwTexture>((Handle<HwTexture>::HandleId) mNextFakeHandle++);
+    return allocHandle<WGPUTexture>();
 }
 
 void WebGPUDriver::createSwapChainR(Handle<HwSwapChain> sch, void* nativeWindow, uint64_t flags) {
@@ -452,6 +468,8 @@ void WebGPUDriver::createSwapChainR(Handle<HwSwapChain> sch, void* nativeWindow,
     mSwapChain = constructHandle<WebGPUSwapChain>(sch, std::move(surface), surfaceSize, mAdapter,
             mDevice, flags);
     assert_invariant(mSwapChain);
+    WebGPUDescriptorSet::initializeDummyResourcesIfNotAlready(mDevice,
+            mSwapChain->getColorFormat());
     FWGPU_LOGW << "WebGPU support is still essentially a no-op at this point in development (only "
                   "background components have been instantiated/selected, such as surface/screen, "
                   "graphics device/GPU, etc.), thus nothing is being drawn to the screen."
@@ -494,30 +512,46 @@ void WebGPUDriver::createBufferObjectR(Handle<HwBufferObject> boh, uint32_t byte
 
 void WebGPUDriver::createTextureR(Handle<HwTexture> th, SamplerType target, uint8_t levels,
         TextureFormat format, uint8_t samples, uint32_t w, uint32_t h, uint32_t depth,
-        TextureUsage usage) {}
+        TextureUsage usage) {
+    constructHandle<WGPUTexture>(th, target, levels, format, samples, w, h, depth, usage, mDevice);
+}
 
 void WebGPUDriver::createTextureViewR(Handle<HwTexture> th, Handle<HwTexture> srch,
-        uint8_t baseLevel, uint8_t levelCount) {}
+        uint8_t baseLevel, uint8_t levelCount) {
+    auto source = handleCast<WGPUTexture>(srch);
+
+    constructHandle<WGPUTexture>(th, source, baseLevel, levelCount);
+}
 
 void WebGPUDriver::createTextureViewSwizzleR(Handle<HwTexture> th, Handle<HwTexture> srch,
         backend::TextureSwizzle r, backend::TextureSwizzle g, backend::TextureSwizzle b,
-        backend::TextureSwizzle a) {}
+        backend::TextureSwizzle a) {
+    PANIC_POSTCONDITION("Swizzle WebGPU Texture is not supported");
+}
 
 void WebGPUDriver::createTextureExternalImage2R(Handle<HwTexture> th, backend::SamplerType target,
         backend::TextureFormat format, uint32_t width, uint32_t height, backend::TextureUsage usage,
-        Platform::ExternalImageHandleRef externalImage) {}
+        Platform::ExternalImageHandleRef externalImage) {
+    PANIC_POSTCONDITION("External WebGPU Texture is not supported");
+}
 
 void WebGPUDriver::createTextureExternalImageR(Handle<HwTexture> th, backend::SamplerType target,
         backend::TextureFormat format, uint32_t width, uint32_t height, backend::TextureUsage usage,
-        void* externalImage) {}
+        void* externalImage) {
+    PANIC_POSTCONDITION("External WebGPU Texture is not supported");
+}
 
 void WebGPUDriver::createTextureExternalImagePlaneR(Handle<HwTexture> th,
         backend::TextureFormat format, uint32_t width, uint32_t height, backend::TextureUsage usage,
-        void* image, uint32_t plane) {}
+        void* image, uint32_t plane) {
+    PANIC_POSTCONDITION("External WebGPU Texture is not supported");
+}
 
 void WebGPUDriver::importTextureR(Handle<HwTexture> th, intptr_t id, SamplerType target,
         uint8_t levels, TextureFormat format, uint8_t samples, uint32_t w, uint32_t h,
-        uint32_t depth, TextureUsage usage) {}
+        uint32_t depth, TextureUsage usage) {
+    PANIC_POSTCONDITION("Import WebGPU Texture is not supported");
+}
 
 void WebGPUDriver::createRenderPrimitiveR(Handle<HwRenderPrimitive> rph, Handle<HwVertexBuffer> vbh,
         Handle<HwIndexBuffer> ibh, PrimitiveType pt) {
@@ -557,7 +591,7 @@ void WebGPUDriver::createDescriptorSetLayoutR(Handle<HwDescriptorSetLayout> dslh
 void WebGPUDriver::createDescriptorSetR(Handle<HwDescriptorSet> dsh,
         Handle<HwDescriptorSetLayout> dslh) {
     auto layout = handleCast<WebGPUDescriptorSetLayout>(dslh);
-    constructHandle<WebGPUDescriptorSet>(dsh, layout->getLayout(), layout->getLayoutSize());
+    constructHandle<WebGPUDescriptorSet>(dsh, layout->getLayout(), layout->getBindGroupEntries());
 }
 
 Handle<HwStream> WebGPUDriver::createStreamNative(void* nativeStream) {
@@ -594,7 +628,7 @@ FenceStatus WebGPUDriver::getFenceStatus(Handle<HwFence> fh) {
 // We create all textures using VK_IMAGE_TILING_OPTIMAL, so our definition of "supported" is that
 // the GPU supports the given texture format with non-zero optimal tiling features.
 bool WebGPUDriver::isTextureFormatSupported(TextureFormat format) {
-    return true;
+    return WGPUTexture::fToWGPUTextureFormat(format) != wgpu::TextureFormat::Undefined;
 }
 
 bool WebGPUDriver::isTextureSwizzleSupported() {
@@ -742,13 +776,31 @@ void WebGPUDriver::compilePrograms(CompilerPriorityQueue priority,
     }
 }
 
-void WebGPUDriver::beginRenderPass(Handle<HwRenderTarget> rth, const RenderPassParams& params) {
-    wgpu::CommandEncoderDescriptor commandEncoderDescriptor = {
-        .label = "command_encoder"
-    };
-    mCommandEncoder = mDevice.CreateCommandEncoder(&commandEncoderDescriptor);
+void WebGPUDriver::beginRenderPass(Handle<HwRenderTarget> rth, RenderPassParams const& params) {
     assert_invariant(mCommandEncoder);
 
+    auto* renderTarget = handleCast<WGPURenderTarget>(rth);
+    // if (renderTarget == mDefaultRenderTarget) {
+    //     FWGPU_LOGW << "Default render target"
+    //                << utils::io::endl;
+    // } else {
+    //     FWGPU_LOGW << "Non Default render target"
+    //                << utils::io::endl;
+    // }
+    wgpu::RenderPassDescriptor renderPassDescriptor2;
+    wgpu::RenderPassDepthStencilAttachment depthStencilAttachment{
+        .view = mSwapChain->getDepthTextureView(),
+        .depthLoadOp = WGPURenderTarget::getLoadOperation(params, TargetBufferFlags::DEPTH),
+        .depthStoreOp = WGPURenderTarget::getStoreOperation(params, TargetBufferFlags::DEPTH),
+        .depthClearValue = static_cast<float>(params.clearDepth),
+        .depthReadOnly = (params.readOnlyDepthStencil & RenderPassParams::READONLY_DEPTH) > 0,
+        .stencilLoadOp = WGPURenderTarget::getLoadOperation(params, TargetBufferFlags::STENCIL),
+        .stencilStoreOp = WGPURenderTarget::getStoreOperation(params, TargetBufferFlags::STENCIL),
+        .stencilClearValue = params.clearStencil,
+        .stencilReadOnly = (params.readOnlyDepthStencil & RenderPassParams::READONLY_STENCIL) > 0
+    };
+    renderTarget->setUpRenderPassAttachments(renderPassDescriptor2, mTextureView, params);
+    renderPassDescriptor2.depthStencilAttachment = &depthStencilAttachment;
     // TODO: Remove this code once WebGPU pipeline is implemented
     static float red = 1.0f;
     if (red - 0.01 > 0) {
@@ -773,19 +825,14 @@ void WebGPUDriver::beginRenderPass(Handle<HwRenderTarget> rth, const RenderPassP
         .timestampWrites = nullptr,
     };
 
-    mRenderPassEncoder = mCommandEncoder.BeginRenderPass(&renderPassDescriptor);
+    mRenderPassEncoder = mCommandEncoder.BeginRenderPass(&renderPassDescriptor2);
     mRenderPassEncoder.SetViewport(params.viewport.left, params.viewport.bottom,
             params.viewport.width, params.viewport.height, params.depthRange.near, params.depthRange.far);
 }
 
-void WebGPUDriver::endRenderPass(int) {
+void WebGPUDriver::endRenderPass(int /* dummy */) {
     mRenderPassEncoder.End();
     mRenderPassEncoder = nullptr;
-    wgpu::CommandBufferDescriptor commandBufferDescriptor {
-        .label = "command_buffer",
-    };
-    mCommandBuffer = mCommandEncoder.Finish(&commandBufferDescriptor);
-    assert_invariant(mCommandBuffer);
 }
 
 void WebGPUDriver::nextSubpass(int) {
@@ -800,9 +847,19 @@ void WebGPUDriver::makeCurrent(Handle<HwSwapChain> drawSch, Handle<HwSwapChain>
     wgpu::Extent2D surfaceSize = mPlatform.getSurfaceExtent(mNativeWindow);
     mTextureView = mSwapChain->getCurrentSurfaceTextureView(surfaceSize);
     assert_invariant(mTextureView);
+    wgpu::CommandEncoderDescriptor commandEncoderDescriptor = {
+        .label = "command_encoder"
+    };
+    mCommandEncoder = mDevice.CreateCommandEncoder(&commandEncoderDescriptor);
+    assert_invariant(mCommandEncoder);
 }
 
 void WebGPUDriver::commit(Handle<HwSwapChain> sch) {
+    wgpu::CommandBufferDescriptor commandBufferDescriptor{
+        .label = "command_buffer",
+    };
+    mCommandBuffer = mCommandEncoder.Finish(&commandBufferDescriptor);
+    assert_invariant(mCommandBuffer);
     mCommandEncoder = nullptr;
     mQueue.Submit(1, &mCommandBuffer);
     mCommandBuffer = nullptr;
@@ -859,6 +916,44 @@ void WebGPUDriver::blit(
 }
 
 void WebGPUDriver::bindPipeline(PipelineState const& pipelineState) {
+    const auto* program = handleCast<WGPUProgram>(pipelineState.program);
+    assert_invariant(program);
+    assert_invariant(program->computeShaderModule == nullptr &&
+                     "WebGPU backend does not (yet) support compute pipelines.");
+    FILAMENT_CHECK_POSTCONDITION(program->vertexShaderModule)
+            << "WebGPU backend requires a vertex shader module for a render pipeline";
+    std::array<wgpu::BindGroupLayout, MAX_DESCRIPTOR_SET_COUNT> bindGroupLayouts{};
+    assert_invariant(bindGroupLayouts.size() >= pipelineState.pipelineLayout.setLayout.size());
+    size_t bindGroupLayoutCount = 0;
+    for (size_t i = 0; i < bindGroupLayouts.size(); i++) {
+        const auto handle = pipelineState.pipelineLayout.setLayout[bindGroupLayoutCount];
+        if (handle.getId() == HandleBase::nullid) {
+            continue;
+        }
+        bindGroupLayouts[bindGroupLayoutCount++] =
+                handleCast<WebGPUDescriptorSetLayout>(handle)->getLayout();
+    }
+    std::stringstream layoutLabelStream;
+    layoutLabelStream << program->name.c_str() << " layout";
+    const auto layoutLabel = layoutLabelStream.str();
+    const wgpu::PipelineLayoutDescriptor layoutDescriptor{
+        .label = wgpu::StringView(layoutLabel),
+        .bindGroupLayoutCount = bindGroupLayoutCount,
+        .bindGroupLayouts = bindGroupLayouts.data()
+        // TODO investigate immediateDataRangeByteSize
+    };
+    const wgpu::PipelineLayout layout = mDevice.CreatePipelineLayout(&layoutDescriptor);
+    FILAMENT_CHECK_POSTCONDITION(layout)
+            << "Failed to create wgpu::PipelineLayout for render pipeline for "
+            << layoutDescriptor.label;
+    auto const* vertexBufferInfo = handleCast<WGPUVertexBufferInfo>(pipelineState.vertexBufferInfo);
+    assert_invariant(vertexBufferInfo);
+    const wgpu::RenderPipeline pipeline = createWebGPURenderPipeline(mDevice, *program,
+            *vertexBufferInfo, layout, pipelineState.rasterState, pipelineState.stencilState,
+            pipelineState.polygonOffset, pipelineState.primitiveType, mSwapChain->getColorFormat(),
+            mSwapChain->getDepthFormat());
+    // TODO: uncomment once we have a valid pipeline to set
+    mRenderPassEncoder.SetPipeline(pipeline);
 }
 
 void WebGPUDriver::bindRenderPrimitive(Handle<HwRenderPrimitive> rph) {
@@ -878,10 +973,18 @@ void WebGPUDriver::bindRenderPrimitive(Handle<HwRenderPrimitive> rph) {
 }
 
 void WebGPUDriver::draw2(uint32_t indexOffset, uint32_t indexCount, uint32_t instanceCount) {
+    // Calling DrawIndexed with "firstInstance = 0" results in a NON spinning triangle
+    //    mRenderPassEncoder.DrawIndexed(indexCount, instanceCount, indexOffset, 0, 0);
+    // Calling DrawIndexed with "firstInstance = 1" results in a spinning triangle
+    mRenderPassEncoder.DrawIndexed(indexCount, instanceCount, indexOffset, 0, 1);
+    // Calling Draw with "firstInstance = 0" results in a NON spinning triangle
+    // Calling Draw with "firstInstance = 1" results in a spinning triangle
+    //    mRenderPassEncoder.Draw(indexCount, instanceCount, 0, 1);
 }
 
-void WebGPUDriver::draw(PipelineState pipelineState, Handle<HwRenderPrimitive> rph,
-        uint32_t indexOffset, uint32_t indexCount, uint32_t instanceCount) {
+void WebGPUDriver::draw(PipelineState, Handle<HwRenderPrimitive>, uint32_t indexOffset,
+        uint32_t indexCount, uint32_t instanceCount) {
+    draw2(indexOffset, indexCount, instanceCount);
 }
 
 void WebGPUDriver::dispatchCompute(Handle<HwProgram> program, math::uint3 workGroupCount) {
@@ -917,34 +1020,156 @@ void WebGPUDriver::updateDescriptorSetBuffer(Handle<HwDescriptorSet> dsh,
 
 void WebGPUDriver::updateDescriptorSetTexture(Handle<HwDescriptorSet> dsh,
         backend::descriptor_binding_t binding, Handle<HwTexture> th, SamplerParams params) {
-    /*
     auto bindGroup = handleCast<WebGPUDescriptorSet>(dsh);
     auto texture = handleCast<WGPUTexture>(th);
 
-    // TODO very high odds badd assumptions are in here about handling HwTexture. Revisit with more
-    // understanding. Right now assuming there is a wgpu::TextureView filled in
     if (!bindGroup->getIsLocked()) {
+        // Dawn will cache duplicate samplers, so we don't strictly need to maintain a cache.
+        //  Making a cache might save us minor perf by reducing param translation
+        auto sampler = makeSampler(params);
         // TODO making assumptions that size and offset mean the same thing here.
         wgpu::BindGroupEntry tEntry{ .binding = static_cast<uint32_t>(binding * 2),
-            .textureView = texture->texView };
+            .textureView = texture->getTexView() };
         bindGroup->addEntry(tEntry.binding, std::move(tEntry));
 
         wgpu::BindGroupEntry sEntry{ .binding = static_cast<uint32_t>(binding * 2 + 1),
-            .sampler = texture->sampler };
+            .sampler = sampler };
         bindGroup->addEntry(sEntry.binding, std::move(sEntry));
     }
-    //TODO Just the setup, this function stilll needs the rest of logic implemented
-     */
 }
 
-void WebGPUDriver::bindDescriptorSet(Handle<HwDescriptorSet> dsh, backend::descriptor_set_t set,
-        backend::DescriptorSetOffsetArray&& offsets) {
-    auto bindGroup = handleCast<WebGPUDescriptorSet>(dsh);
-    // TODO: presume we need this, use it. Probably Encoder::SetBindGroup
-    auto wbg = bindGroup->lockAndReturn(mDevice);
+void WebGPUDriver::bindDescriptorSet(Handle<HwDescriptorSet> dsh,
+        backend::descriptor_set_t setIndex, backend::DescriptorSetOffsetArray&& offsets) {
+    const auto bindGroup = handleCast<WebGPUDescriptorSet>(dsh);
+    const auto wbg = bindGroup->lockAndReturn(mDevice);
+    assert_invariant(mRenderPassEncoder);
+    // TODO is this how we should be getting the dynamic offsets?
+    //      should we add offsets for unused entries or is the input already have them?
+    //      this implementation assumes unused entries are not provided, and adds dummy values.
+    //      The count also includes unused entities, as not doing so produces errors
+    const size_t dynamicOffsetCount = bindGroup->countEntitiesWithDynamicOffsets();
+    uint32_t const* const dynamicOffsetsWithUnused = bindGroup->setDynamicOffsets(offsets.data());
+    mRenderPassEncoder.SetBindGroup(setIndex, wbg, dynamicOffsetCount, dynamicOffsetsWithUnused);
 }
 
 void WebGPUDriver::setDebugTag(HandleBase::HandleId handleId, utils::CString tag) {
 }
+wgpu::Sampler WebGPUDriver::makeSampler(SamplerParams const& params) {
+    wgpu::SamplerDescriptor desc;
+
+    desc.label = "TODO";
+    desc.addressModeU = fWrapModeToWAddressMode(params.wrapS);
+    desc.addressModeV = fWrapModeToWAddressMode(params.wrapR);
+    desc.addressModeW = fWrapModeToWAddressMode(params.wrapT);
+    switch (params.filterMag) {
+        case SamplerMagFilter::NEAREST: {
+            desc.magFilter = wgpu::FilterMode::Nearest;
+            break;
+        }
+        case SamplerMagFilter::LINEAR: {
+            desc.magFilter = wgpu::FilterMode::Linear;
+            break;
+        }
+    }
+    switch (params.filterMin) {
+        case SamplerMinFilter::NEAREST: {
+            desc.minFilter = wgpu::FilterMode::Nearest;
+            // Metal Driver uses an explicit not-mipmapped value webgpu lacks. Nearest should
+            // suffice
+            desc.mipmapFilter = wgpu::MipmapFilterMode::Nearest;
+            break;
+        }
+        case SamplerMinFilter::LINEAR: {
+            desc.minFilter = wgpu::FilterMode::Linear;
+            // Metal Driver uses an explicit not-mipmapped value webgpu lacks. Nearest should
+            // suffice
+
+            desc.mipmapFilter = wgpu::MipmapFilterMode::Nearest;
+            break;
+        }
+        case SamplerMinFilter::NEAREST_MIPMAP_NEAREST: {
+            desc.minFilter = wgpu::FilterMode::Nearest;
+            desc.mipmapFilter = wgpu::MipmapFilterMode::Nearest;
+            break;
+        }
+        case SamplerMinFilter::LINEAR_MIPMAP_NEAREST: {
+            desc.minFilter = wgpu::FilterMode::Linear;
+            desc.mipmapFilter = wgpu::MipmapFilterMode::Nearest;
+
+            break;
+        }
+        case SamplerMinFilter::NEAREST_MIPMAP_LINEAR: {
+            desc.minFilter = wgpu::FilterMode::Nearest;
+            desc.mipmapFilter = wgpu::MipmapFilterMode::Linear;
+
+            break;
+        }
+        case SamplerMinFilter::LINEAR_MIPMAP_LINEAR: {
+            desc.minFilter = wgpu::FilterMode::Linear;
+            desc.mipmapFilter = wgpu::MipmapFilterMode::Linear;
+            break;
+        }
+    }
+    switch (params.compareFunc) {
+        case SamplerCompareFunc::LE: {
+            desc.compare = wgpu::CompareFunction::LessEqual;
+            break;
+        }
+        case SamplerCompareFunc::GE: {
+            desc.compare = wgpu::CompareFunction::GreaterEqual;
+            break;
+        }
+        case SamplerCompareFunc::L: {
+            desc.compare = wgpu::CompareFunction::Less;
+            break;
+        }
+        case SamplerCompareFunc::G: {
+            desc.compare = wgpu::CompareFunction::Greater;
+            break;
+        }
+        case SamplerCompareFunc::E: {
+            desc.compare = wgpu::CompareFunction::Equal;
+            break;
+        }
+        case SamplerCompareFunc::NE: {
+            desc.compare = wgpu::CompareFunction::NotEqual;
+            break;
+        }
+        case SamplerCompareFunc::A: {
+            desc.compare = wgpu::CompareFunction::Always;
+            break;
+        }
+        case SamplerCompareFunc::N: {
+            desc.compare = wgpu::CompareFunction::Never;
+            break;
+        }
+    }
+
+    desc.maxAnisotropy = 1u << params.anisotropyLog2;
+
+
+    // Unused: Filament's compareMode, WGPU lodMinClamp/lodMaxClamp
+
+    //TODO Once we can properly map to descriptorsetlayout use the sampler.
+    return mDevice.CreateSampler(/*&desc*/);
+}
+wgpu::AddressMode WebGPUDriver::fWrapModeToWAddressMode(const SamplerWrapMode& fWrapMode) {
+    switch (fWrapMode) {
+        case SamplerWrapMode::CLAMP_TO_EDGE: {
+            return wgpu::AddressMode::ClampToEdge;
+            break;
+        }
+        case SamplerWrapMode::REPEAT: {
+            return wgpu::AddressMode::Repeat;
+            break;
+        }
+        case SamplerWrapMode::MIRRORED_REPEAT: {
+            return wgpu::AddressMode::MirrorRepeat;
+            break;
+        }
+    }
+    return wgpu::AddressMode::Undefined;
+}
+
 
 } // namespace filament

filament/backend/src/webgpu/WebGPUDriver.h

@@ -56,7 +56,8 @@ private:
     explicit WebGPUDriver(WebGPUPlatform& platform, const Platform::DriverConfig& driverConfig) noexcept;
     [[nodiscard]] ShaderModel getShaderModel() const noexcept final;
     [[nodiscard]] ShaderLanguage getShaderLanguage() const noexcept final;
-
+    [[nodiscard]] wgpu::Sampler makeSampler(SamplerParams const& params);
+    [[nodiscard]] static wgpu::AddressMode fWrapModeToWAddressMode(const filament::backend::SamplerWrapMode& fUsage);
     template<typename GPUBufferObject>
     void updateGPUBuffer(GPUBufferObject* gpuBufferObject, BufferDescriptor&& bufferDescriptor,
             uint32_t byteOffset) {

filament/backend/src/webgpu/WebGPUHandles.cpp

@@ -16,7 +16,16 @@
 
 #include "WebGPUHandles.h"
 
+#include <backend/DriverEnums.h>
+
+#include <utils/BitmaskEnum.h>
+
+#include <webgpu/webgpu_cpp.h>
+
+#include <algorithm>
+#include <cstdint>
 #include <utility>
+#include <vector>
 
 namespace {
 constexpr wgpu::BufferUsage getBufferObjectUsage(
@@ -110,6 +119,44 @@ wgpu::VertexFormat getVertexFormat(filament::backend::ElementType type, bool nor
     }
 }
 
+wgpu::StringView getUserTextureLabel(filament::backend::SamplerType target) {
+    // TODO will be helpful to get more useful info than this
+    using filament::backend::SamplerType;
+    switch (target) {
+        case SamplerType::SAMPLER_2D:
+            return "a_2D_user_texture";
+        case SamplerType::SAMPLER_2D_ARRAY:
+            return "a_2D_array_user_texture";
+        case SamplerType::SAMPLER_CUBEMAP:
+            return "a_cube_map_user_texture";
+        case SamplerType::SAMPLER_EXTERNAL:
+            return "an_external_user_texture";
+        case SamplerType::SAMPLER_3D:
+            return "a_3D_user_texture";
+        case SamplerType::SAMPLER_CUBEMAP_ARRAY:
+            return "a_cube_mape_array_user_texture";
+    }
+}
+
+wgpu::StringView getUserTextureViewLabel(filament::backend::SamplerType target) {
+    // TODO will be helpful to get more useful info than this
+    using filament::backend::SamplerType;
+    switch (target) {
+        case SamplerType::SAMPLER_2D:
+            return "a_2D_user_texture_view";
+        case SamplerType::SAMPLER_2D_ARRAY:
+            return "a_2D_array_user_texture_view";
+        case SamplerType::SAMPLER_CUBEMAP:
+            return "a_cube_map_user_texture_view";
+        case SamplerType::SAMPLER_EXTERNAL:
+            return "an_external_user_texture_view";
+        case SamplerType::SAMPLER_3D:
+            return "a_3D_user_texture_view";
+        case SamplerType::SAMPLER_CUBEMAP_ARRAY:
+            return "a_cube_mape_array_user_texture_view";
+    }
+}
+
 }// namespace
 
 namespace filament::backend {
@@ -137,7 +184,7 @@ WGPUVertexBufferInfo::WGPUVertexBufferInfo(uint8_t bufferCount, uint8_t attribut
         mAttributes[attrib.buffer].push_back({
             .format = vertexFormat,
             .offset = attrib.offset,
-            .shaderLocation = static_cast<uint32_t>(mAttributes[attrib.buffer].size()),
+            .shaderLocation = attribIndex,
         });
 
         mVertexBufferLayout[attrib.buffer].stepMode = wgpu::VertexStepMode::Vertex;
@@ -192,11 +239,20 @@ WebGPUDescriptorSetLayout::WebGPUDescriptorSetLayout(DescriptorSetLayout const&
         wgpu::Device const& device) {
     assert_invariant(device);
 
+    std::string baseLabel;
+    if (std::holds_alternative<utils::StaticString>(layout.label)) {
+        const auto& temp = std::get_if<utils::StaticString>(&layout.label);
+        baseLabel = temp->c_str();
+    } else if (std::holds_alternative<utils::CString>(layout.label)) {
+        const auto& temp = std::get_if<utils::CString>(&layout.label);
+        baseLabel = temp->c_str();
+    }
+
     // TODO: layoutDescriptor has a "Label". Ideally we can get info on what this layout is for
     // debugging. For now, hack an incrementing value.
     static int layoutNum = 0;
 
-    uint samplerCount =
+    unsigned int samplerCount =
             std::count_if(layout.bindings.begin(), layout.bindings.end(), [](auto& fEntry) {
                 return fEntry.type == DescriptorType::SAMPLER ||
                        fEntry.type == DescriptorType::SAMPLER_EXTERNAL;
@@ -205,86 +261,204 @@ WebGPUDescriptorSetLayout::WebGPUDescriptorSetLayout(DescriptorSetLayout const&
 
     std::vector<wgpu::BindGroupLayoutEntry> wEntries;
     wEntries.reserve(layout.bindings.size() + samplerCount);
+    mBindGroupEntries.reserve(wEntries.capacity());
 
     for (auto fEntry: layout.bindings) {
         auto& wEntry = wEntries.emplace_back();
+        auto& entryInfo = mBindGroupEntries.emplace_back();
         wEntry.visibility = filamentStageToWGPUStage(fEntry.stageFlags);
         wEntry.binding = fEntry.binding * 2;
+        entryInfo.binding = wEntry.binding;
 
         switch (fEntry.type) {
-            // TODO Metal treats these the same. Is this fine?
             case DescriptorType::SAMPLER_EXTERNAL:
             case DescriptorType::SAMPLER: {
-                // Sampler binding is 2n+1 due to split.
                 auto& samplerEntry = wEntries.emplace_back();
+                auto& samplerEntryInfo = mBindGroupEntries.emplace_back();
                 samplerEntry.binding = fEntry.binding * 2 + 1;
+                samplerEntryInfo.binding = samplerEntry.binding;
+                samplerEntryInfo.type = WebGPUDescriptorSetLayout::BindGroupEntryType::SAMPLER;
                 samplerEntry.visibility = wEntry.visibility;
                 // We are simply hoping that undefined and defaults suffices here.
-                samplerEntry.sampler.type = wgpu::SamplerBindingType::Undefined;
-                wEntry.texture.sampleType = wgpu::TextureSampleType::Undefined;
+                samplerEntry.sampler.type = wgpu::SamplerBindingType::NonFiltering; // Example default
+                wEntry.texture.sampleType = wgpu::TextureSampleType::Float;      // Example default
+                // TODO: FIX! THIS IS HACK FOR HELLO-TRIANGLE!
+                if (baseLabel.find("Skybox") != std::string::npos ||
+                        (baseLabel == "Filament Default Material_perView" && wEntry.binding == 22)) {
+                    wEntry.texture.viewDimension = wgpu::TextureViewDimension::Cube;
+                } else {
+                    wEntry.texture.viewDimension =
+                            wgpu::TextureViewDimension::e2D;// Example default
+                }
+                entryInfo.type = WebGPUDescriptorSetLayout::BindGroupEntryType::TEXTURE_VIEW;
                 break;
             }
             case DescriptorType::UNIFORM_BUFFER: {
                 wEntry.buffer.hasDynamicOffset =
                         any(fEntry.flags & DescriptorFlags::DYNAMIC_OFFSET);
+                entryInfo.hasDynamicOffset = wEntry.buffer.hasDynamicOffset;
                 wEntry.buffer.type = wgpu::BufferBindingType::Uniform;
                 // TODO: Ideally we fill minBindingSize
                 break;
             }
 
             case DescriptorType::INPUT_ATTACHMENT: {
-                // TODO: support INPUT_ATTACHMENT. Metal does not currently.
                 PANIC_POSTCONDITION("Input Attachment is not supported");
                 break;
             }
-
             case DescriptorType::SHADER_STORAGE_BUFFER: {
-                // TODO: Vulkan does not support this, can we?
                 PANIC_POSTCONDITION("Shader storage is not supported");
                 break;
             }
         }
-
-        // Currently flags are only used to specify dynamic offset.
-
-        // UNUSED
-        // fEntry.count
+        // fEntry.count is unused currently
     }
-
+    std::string label =  "layout_" + baseLabel + std::to_string(++layoutNum) ;
     wgpu::BindGroupLayoutDescriptor layoutDescriptor{
-        // TODO: layoutDescriptor has a "Label". Ideally we can get info on what this layout is for
-        // debugging. For now, hack an incrementing value.
-        .label{ "layout_" + std::to_string(++layoutNum) },
+        .label{label.c_str()}, // Use .c_str() if label needs to be const char*
         .entryCount = wEntries.size(),
         .entries = wEntries.data()
     };
-    // TODO Do we need to defer this until we have more info on textures and samplers??
-    mLayoutSize = wEntries.size();
     mLayout = device.CreateBindGroupLayout(&layoutDescriptor);
 }
 
 WebGPUDescriptorSetLayout::~WebGPUDescriptorSetLayout() {}
 
-WebGPUDescriptorSet::WebGPUDescriptorSet(const wgpu::BindGroupLayout& layout, uint layoutSize)
-    : mLayout(layout),
-      entries(layoutSize, wgpu::BindGroupEntry{}) {
-    // Establish the size of entries based on the layout. This should be reliable and efficient.
+wgpu::Buffer WebGPUDescriptorSet::sDummyUniformBuffer = nullptr;
+wgpu::Texture WebGPUDescriptorSet::sDummyTexture = nullptr;
+wgpu::TextureView WebGPUDescriptorSet::sDummyTextureView = nullptr;
+wgpu::Sampler WebGPUDescriptorSet::sDummySampler = nullptr;
+
+void WebGPUDescriptorSet::initializeDummyResourcesIfNotAlready(wgpu::Device const& device,
+        wgpu::TextureFormat aColorFormat) {
+    if (!sDummyUniformBuffer) {
+        wgpu::BufferDescriptor bufferDescriptor{
+            .label = "dummy_uniform_not_to_be_used",
+            .usage = wgpu::BufferUsage::Uniform,
+            .size = 4
+        };
+        sDummyUniformBuffer = device.CreateBuffer(&bufferDescriptor);
+        FILAMENT_CHECK_POSTCONDITION(sDummyUniformBuffer)
+                << "Failed to create dummy uniform buffer?";
+    }
+    if (!sDummyTexture || !sDummyTextureView) {
+        wgpu::TextureDescriptor textureDescriptor{
+            .label = "dummy_texture_not_to_be_used",
+            .usage = wgpu::TextureUsage::TextureBinding,
+            .dimension = wgpu::TextureDimension::e2D,
+            .size = wgpu::Extent3D{ .width = 4, .height = 4, .depthOrArrayLayers = 1 },
+            .format = aColorFormat,
+        };
+        if (!sDummyTexture) {
+            sDummyTexture = device.CreateTexture(&textureDescriptor);
+            FILAMENT_CHECK_POSTCONDITION(sDummyUniformBuffer) << "Failed to create dummy texture?";
+        }
+        if (!sDummyTextureView) {
+            wgpu::TextureViewDescriptor textureViewDescriptor{
+                .label = "dummy_texture_view_not_to_be_used"
+            };
+            sDummyTextureView = sDummyTexture.CreateView(&textureViewDescriptor);
+            FILAMENT_CHECK_POSTCONDITION(sDummyUniformBuffer)
+                    << "Failed to create dummy texture view?";
+        }
+    }
+    if (!sDummySampler) {
+        wgpu::SamplerDescriptor samplerDescriptor{
+            .label = "dummy_sampler_not_to_be_used"
+        };
+        sDummySampler = device.CreateSampler(&samplerDescriptor);
+        FILAMENT_CHECK_POSTCONDITION(sDummyUniformBuffer) << "Failed to create dummy sampler?";
+    }
+}
+
+std::vector<wgpu::BindGroupEntry> WebGPUDescriptorSet::createDummyEntriesSortedByBinding(
+        std::vector<filament::backend::WebGPUDescriptorSetLayout::BindGroupEntryInfo> const&
+                bindGroupEntries) {
+    assert_invariant(WebGPUDescriptorSet::sDummyUniformBuffer &&
+                     "Dummy uniform buffer must have been created before "
+                     "creating dummy bind group entries.");
+    assert_invariant(
+            WebGPUDescriptorSet::sDummyTexture &&
+            "Dummy texture must have been created before creating dummy bind group entries.");
+    assert_invariant(
+            WebGPUDescriptorSet::sDummyTextureView &&
+            "Dummy texture view must have been created before creating dummy bind group entries.");
+    assert_invariant(
+            WebGPUDescriptorSet::sDummySampler &&
+            "Dummy sampler must have been created before creating dummy bind group entries.");
+    using filament::backend::WebGPUDescriptorSetLayout;
+    std::vector<wgpu::BindGroupEntry> entries;
+    entries.reserve(bindGroupEntries.size());
+    for (auto const& entryInfo: bindGroupEntries) {
+        auto& entry = entries.emplace_back();
+        entry.binding = entryInfo.binding;
+        switch (entryInfo.type) {
+            case WebGPUDescriptorSetLayout::BindGroupEntryType::UNIFORM_BUFFER:
+                entry.buffer = WebGPUDescriptorSet::sDummyUniformBuffer;
+                break;
+            case WebGPUDescriptorSetLayout::BindGroupEntryType::TEXTURE_VIEW:
+                entry.textureView = WebGPUDescriptorSet::sDummyTextureView;
+                break;
+            case WebGPUDescriptorSetLayout::BindGroupEntryType::SAMPLER:
+                entry.sampler = WebGPUDescriptorSet::sDummySampler;
+                break;
+        }
+    }
+    std::sort(entries.begin(), entries.end(),
+            [](wgpu::BindGroupEntry const& a, wgpu::BindGroupEntry const& b) {
+                return a.binding < b.binding;
+            });
+    return entries;
+}
+
+WebGPUDescriptorSet::WebGPUDescriptorSet(wgpu::BindGroupLayout const& layout,
+        std::vector<WebGPUDescriptorSetLayout::BindGroupEntryInfo> const& bindGroupEntries)
+    : mLayout(layout),
+      mEntriesSortedByBinding(createDummyEntriesSortedByBinding(bindGroupEntries)) {
+    // Establish the size of entries based on the layout. This should be reliable and efficient.
+    assert_invariant(INVALID_INDEX > mEntryIndexByBinding.size());
+    for (size_t i = 0; i < mEntryIndexByBinding.size(); i++) {
+        mEntryIndexByBinding[i] = INVALID_INDEX;
+    }
+    for (size_t index = 0; index < mEntriesSortedByBinding.size(); index++) {
+        wgpu::BindGroupEntry const& entry = mEntriesSortedByBinding[index];
+        assert_invariant(entry.binding < mEntryIndexByBinding.size());
+        mEntryIndexByBinding[entry.binding] = static_cast<uint8_t>(index);
+    }
+    for (auto const& entry : bindGroupEntries) {
+        if (entry.hasDynamicOffset) {
+            assert_invariant(entry.binding < mEntriesByBindingWithDynamicOffsets.size());
+            mEntriesByBindingWithDynamicOffsets[entry.binding] = true;
+        }
+    }
+    mDynamicOffsets.reserve(mEntriesSortedByBinding.size());
+}
+
+WebGPUDescriptorSet::~WebGPUDescriptorSet() {
+    mBindGroup = nullptr;
+    mLayout = nullptr;
 }
-WebGPUDescriptorSet::~WebGPUDescriptorSet() {}
 
 wgpu::BindGroup WebGPUDescriptorSet::lockAndReturn(const wgpu::Device& device) {
     if (mBindGroup) {
         return mBindGroup;
     }
     // TODO label? Should we just copy layout label?
-    wgpu::BindGroupDescriptor desc{ .layout = mLayout,
-        .entryCount = entries.size(),
-        .entries = entries.data() };
+    wgpu::BindGroupDescriptor desc{
+        .layout = mLayout,
+        .entryCount = mEntriesSortedByBinding.size(),
+        .entries = mEntriesSortedByBinding.data()
+    };
     mBindGroup = device.CreateBindGroup(&desc);
+    FILAMENT_CHECK_POSTCONDITION(mBindGroup) << "Failed to create bind group?";
+    // once we have created the bind group itself we should no longer need any other state
+    mLayout = nullptr;
+    mEntriesSortedByBinding.clear();
+    mEntriesSortedByBinding.shrink_to_fit();
     return mBindGroup;
 }
 
-void WebGPUDescriptorSet::addEntry(uint index, wgpu::BindGroupEntry&& entry) {
+void WebGPUDescriptorSet::addEntry(unsigned int index, wgpu::BindGroupEntry&& entry) {
     if (mBindGroup) {
         // We will keep getting hits from future updates, but shouldn't do anything
         // Filament guarantees this won't change after things have locked.
@@ -292,6 +466,490 @@ void WebGPUDescriptorSet::addEntry(uint index, wgpu::BindGroupEntry&& entry) {
     }
     // TODO: Putting some level of trust that Filament is not going to reuse indexes or go past the
     // layout index for efficiency. Add guards if wrong.
-    entries[index] = std::move(entry);
+    FILAMENT_CHECK_POSTCONDITION(index < mEntryIndexByBinding.size())
+            << "impossible/invalid index for a descriptor/binding (our of range or >= "
+               "MAX_DESCRIPTOR_COUNT) "
+            << index;
+    uint8_t entryIndex = mEntryIndexByBinding[index];
+    FILAMENT_CHECK_POSTCONDITION(
+            entryIndex != INVALID_INDEX && entryIndex < mEntriesSortedByBinding.size())
+            << "Invalid binding " << index;
+    entry.binding = index;
+    mEntriesSortedByBinding[entryIndex] = std::move(entry);
+    mEntriesByBindingAdded[index] = true;
 }
+
+uint32_t const* WebGPUDescriptorSet::setDynamicOffsets(uint32_t const* offsets) {
+    // mDynamicOffsets already reserves enough memory for the number of entries in the set
+    mDynamicOffsets.clear();
+    // this implementation copies the offsets to mDynamicOffsets, but also adds values for
+    // unused entries TODO: is this necessary?
+    size_t inputIndex = 0;
+    size_t outputIndex = 0;
+    for (auto const& entry : mEntriesSortedByBinding) {
+        if (mEntriesByBindingWithDynamicOffsets[entry.binding]) {
+            if (mEntriesByBindingAdded[entry.binding]) {
+                mDynamicOffsets[outputIndex++] = offsets[inputIndex++];
+            } else {
+                mDynamicOffsets[outputIndex++] = 0; // dummy offset, as it was never added
+            }
+        }
+    }
+    return mDynamicOffsets.data();
+}
+
+size_t WebGPUDescriptorSet::countEntitiesWithDynamicOffsets() const {
+    return mEntriesByBindingWithDynamicOffsets.count();
+}
+
+// From createTextureR
+WGPUTexture::WGPUTexture(SamplerType target, uint8_t levels, TextureFormat format, uint8_t samples,
+        uint32_t width, uint32_t height, uint32_t depth, TextureUsage usage,
+        wgpu::Device const& device) noexcept {
+    assert_invariant(
+            samples == 1 ||
+            samples == 4 &&
+                    "An invalid number of samples were requested, as WGPU requires the sample "
+                    "count to either be 1 (no multisampling) or 4, at least as of April 2025 of "
+                    "the spec. See https://www.w3.org/TR/webgpu/#texture-creation or "
+                    "https://gpuweb.github.io/gpuweb/#multisample-state");
+    // First, the texture aspect, starting with the defaults/basic configuration
+    mUsage = fToWGPUTextureUsage(usage);
+    mFormat = fToWGPUTextureFormat(format);
+    wgpu::TextureDescriptor textureDescriptor{
+        .label = getUserTextureLabel(target),
+        .usage = mUsage,
+        .dimension = target == SamplerType::SAMPLER_3D ? wgpu::TextureDimension::e3D
+                                                       : wgpu::TextureDimension::e2D,
+        .size = { .width = width, .height = height, .depthOrArrayLayers = depth },
+        .format = mFormat,
+        .mipLevelCount = levels,
+        .sampleCount = samples,
+        // TODO Is this fine? Could do all-the-things, a naive mapping or get something from
+        // Filament
+        .viewFormatCount = 0,
+        .viewFormats = nullptr,
+    };
+    // adjust for specific cases
+    switch (target) {
+        case SamplerType::SAMPLER_2D:
+            mArrayLayerCount = 1;
+            break;
+        case SamplerType::SAMPLER_2D_ARRAY:
+            mArrayLayerCount = textureDescriptor.size.depthOrArrayLayers;
+            break;
+        case SamplerType::SAMPLER_CUBEMAP:
+            textureDescriptor.size.depthOrArrayLayers = 6;
+            mArrayLayerCount = textureDescriptor.size.depthOrArrayLayers;
+            break;
+        case SamplerType::SAMPLER_EXTERNAL:
+        case SamplerType::SAMPLER_3D:
+            mArrayLayerCount = 1;
+            break;
+        case SamplerType::SAMPLER_CUBEMAP_ARRAY:
+            textureDescriptor.size.depthOrArrayLayers = depth * 6;
+            mArrayLayerCount = textureDescriptor.size.depthOrArrayLayers;
+            break;
+    }
+    assert_invariant(textureDescriptor.format != wgpu::TextureFormat::Undefined &&
+                     "Could not find appropriate WebGPU format");
+    mTexture = device.CreateTexture(&textureDescriptor);
+    FILAMENT_CHECK_POSTCONDITION(mTexture)
+            << "Failed to create texture for " << textureDescriptor.label;
+    // Second, the texture view aspect
+    mTexView = makeTextureView(0, levels, target);
+}
+
+// From createTextureViewR
+WGPUTexture::WGPUTexture(WGPUTexture* src, uint8_t baseLevel, uint8_t levelCount) noexcept {
+    mTexture = src->mTexture;
+    mTexView = makeTextureView(baseLevel, levelCount, target);
+}
+
+wgpu::TextureUsage WGPUTexture::fToWGPUTextureUsage(const TextureUsage& fUsage) {
+    wgpu::TextureUsage retUsage = wgpu::TextureUsage::None;
+
+    // Basing this mapping off of VulkanTexture.cpp's getUsage func and suggestions from Gemini
+    // TODO Validate assumptions, revisit if issues.
+    if (any(TextureUsage::BLIT_SRC & fUsage)) {
+        retUsage |= wgpu::TextureUsage::CopySrc;
+    }
+    if (any((TextureUsage::BLIT_DST | TextureUsage::UPLOADABLE) & fUsage)) {
+        retUsage |= wgpu::TextureUsage::CopyDst;
+    }
+    if (any(TextureUsage::SAMPLEABLE & fUsage)) {
+        retUsage |= wgpu::TextureUsage::TextureBinding;
+    }
+    // WGPU Render attachment covers either color or stencil situation dependant
+    // NOTE: Depth attachment isn't used this way in Vulkan but logically maps to WGPU docs. If
+    // issues, investigate here.
+    if (any((TextureUsage::COLOR_ATTACHMENT | TextureUsage::STENCIL_ATTACHMENT |
+                    TextureUsage::DEPTH_ATTACHMENT) &
+                fUsage)) {
+        retUsage |= wgpu::TextureUsage::RenderAttachment;
+    }
+
+    // This is from Vulkan logic- if there are any issues try disabling this first, allows perf
+    // benefit though
+    const bool useTransientAttachment =
+            // Usage consists of attachment flags only.
+            none(fUsage & ~TextureUsage::ALL_ATTACHMENTS) &&
+            // Usage contains at least one attachment flag.
+            any(fUsage & TextureUsage::ALL_ATTACHMENTS) &&
+            // Depth resolve cannot use transient attachment because it uses a custom shader.
+            // TODO: see VulkanDriver::isDepthStencilResolveSupported() to know when to remove this
+            // restriction.
+            // Note that the custom shader does not resolve stencil. We do need to move to vk 1.2
+            // and above to be able to support stencil resolve (along with depth).
+            !(any(fUsage & TextureUsage::DEPTH_ATTACHMENT) && samples > 1);
+    if (useTransientAttachment) {
+        retUsage |= wgpu::TextureUsage::TransientAttachment;
+    }
+    // NOTE: Unused wgpu flags:
+    //  StorageBinding
+    //  StorageAttachment
+
+    // NOTE: Unused Filament flags:
+    //  SUBPASS_INPUT VK goes to input attachment which we don't support right now
+    //  PROTECTED
+    return retUsage;
+}
+wgpu::TextureFormat WGPUTexture::fToWGPUTextureFormat(const TextureFormat& fUsage) {
+    switch (fUsage) {
+        case filament::backend::TextureFormat::R8:
+            return wgpu::TextureFormat::R8Unorm;
+        case filament::backend::TextureFormat::R8_SNORM:
+            return wgpu::TextureFormat::R8Snorm;
+        case filament::backend::TextureFormat::R8UI:
+            return wgpu::TextureFormat::R8Uint;
+        case filament::backend::TextureFormat::R8I:
+            return wgpu::TextureFormat::R8Sint;
+        case filament::backend::TextureFormat::STENCIL8:
+            return wgpu::TextureFormat::Stencil8;
+        case filament::backend::TextureFormat::R16F:
+            return wgpu::TextureFormat::R16Float;
+        case filament::backend::TextureFormat::R16UI:
+            return wgpu::TextureFormat::R16Uint;
+        case filament::backend::TextureFormat::R16I:
+            return wgpu::TextureFormat::R16Sint;
+        case filament::backend::TextureFormat::RG8:
+            return wgpu::TextureFormat::RG8Unorm;
+        case filament::backend::TextureFormat::RG8_SNORM:
+            return wgpu::TextureFormat::RG8Snorm;
+        case filament::backend::TextureFormat::RG8UI:
+            return wgpu::TextureFormat::RG8Uint;
+        case filament::backend::TextureFormat::RG8I:
+            return wgpu::TextureFormat::RG8Sint;
+        case filament::backend::TextureFormat::R32F:
+            return wgpu::TextureFormat::R32Float;
+        case filament::backend::TextureFormat::R32UI:
+            return wgpu::TextureFormat::R32Uint;
+        case filament::backend::TextureFormat::R32I:
+            return wgpu::TextureFormat::R32Sint;
+        case filament::backend::TextureFormat::RG16F:
+            return wgpu::TextureFormat::RG16Float;
+        case filament::backend::TextureFormat::RG16UI:
+            return wgpu::TextureFormat::RG16Uint;
+        case filament::backend::TextureFormat::RG16I:
+            return wgpu::TextureFormat::RG16Sint;
+        case filament::backend::TextureFormat::RGBA8:
+            return wgpu::TextureFormat::RGBA8Unorm;
+        case filament::backend::TextureFormat::SRGB8_A8:
+            return wgpu::TextureFormat::RGBA8UnormSrgb;
+        case filament::backend::TextureFormat::RGBA8_SNORM:
+            return wgpu::TextureFormat::RGBA8Snorm;
+        case filament::backend::TextureFormat::RGBA8UI:
+            return wgpu::TextureFormat::RGBA8Uint;
+        case filament::backend::TextureFormat::RGBA8I:
+            return wgpu::TextureFormat::RGBA8Sint;
+        case filament::backend::TextureFormat::DEPTH16:
+            return wgpu::TextureFormat::Depth16Unorm;
+        case filament::backend::TextureFormat::DEPTH24:
+            return wgpu::TextureFormat::Depth24Plus;
+        case filament::backend::TextureFormat::DEPTH32F:
+            return wgpu::TextureFormat::Depth32Float;
+        case filament::backend::TextureFormat::DEPTH24_STENCIL8:
+            return wgpu::TextureFormat::Depth24PlusStencil8;
+        case filament::backend::TextureFormat::DEPTH32F_STENCIL8:
+            return wgpu::TextureFormat::Depth32FloatStencil8;
+        case filament::backend::TextureFormat::RG32F:
+            return wgpu::TextureFormat::RG32Float;
+        case filament::backend::TextureFormat::RG32UI:
+            return wgpu::TextureFormat::RG32Uint;
+        case filament::backend::TextureFormat::RG32I:
+            return wgpu::TextureFormat::RG32Sint;
+        case filament::backend::TextureFormat::RGBA16F:
+            return wgpu::TextureFormat::RGBA16Float;
+        case filament::backend::TextureFormat::RGBA16UI:
+            return wgpu::TextureFormat::RGBA16Uint;
+        case filament::backend::TextureFormat::RGBA16I:
+            return wgpu::TextureFormat::RGBA16Sint;
+        case filament::backend::TextureFormat::RGBA32F:
+            return wgpu::TextureFormat::RGBA32Float;
+        case filament::backend::TextureFormat::RGBA32UI:
+            return wgpu::TextureFormat::RGBA32Uint;
+        case filament::backend::TextureFormat::RGBA32I:
+            return wgpu::TextureFormat::RGBA32Sint;
+        case filament::backend::TextureFormat::EAC_R11:
+            return wgpu::TextureFormat::EACR11Unorm;
+        case filament::backend::TextureFormat::EAC_R11_SIGNED:
+            return wgpu::TextureFormat::EACR11Snorm;
+        case filament::backend::TextureFormat::EAC_RG11:
+            return wgpu::TextureFormat::EACRG11Unorm;
+        case filament::backend::TextureFormat::EAC_RG11_SIGNED:
+            return wgpu::TextureFormat::EACRG11Snorm;
+        case filament::backend::TextureFormat::ETC2_RGB8:
+            return wgpu::TextureFormat::ETC2RGB8Unorm;
+        case filament::backend::TextureFormat::ETC2_SRGB8:
+            return wgpu::TextureFormat::ETC2RGB8UnormSrgb;
+        case filament::backend::TextureFormat::ETC2_RGB8_A1:
+            return wgpu::TextureFormat::ETC2RGB8A1Unorm;
+        case filament::backend::TextureFormat::ETC2_SRGB8_A1:
+            return wgpu::TextureFormat::ETC2RGB8A1UnormSrgb;
+        case filament::backend::TextureFormat::ETC2_EAC_RGBA8:
+            return wgpu::TextureFormat::ETC2RGBA8Unorm;
+        case filament::backend::TextureFormat::ETC2_EAC_SRGBA8:
+            return wgpu::TextureFormat::ETC2RGBA8UnormSrgb;
+        case filament::backend::TextureFormat::RGBA_ASTC_4x4:
+            return wgpu::TextureFormat::ASTC4x4Unorm;
+        case filament::backend::TextureFormat::SRGB8_ALPHA8_ASTC_4x4:
+            return wgpu::TextureFormat::ASTC4x4UnormSrgb;
+        case filament::backend::TextureFormat::RGBA_ASTC_5x4:
+            return wgpu::TextureFormat::ASTC5x4Unorm;
+        case filament::backend::TextureFormat::SRGB8_ALPHA8_ASTC_5x4:
+            return wgpu::TextureFormat::ASTC5x4UnormSrgb;
+        case filament::backend::TextureFormat::RGBA_ASTC_5x5:
+            return wgpu::TextureFormat::ASTC5x5Unorm;
+        case filament::backend::TextureFormat::SRGB8_ALPHA8_ASTC_5x5:
+            return wgpu::TextureFormat::ASTC5x5UnormSrgb;
+        case filament::backend::TextureFormat::RGBA_ASTC_6x5:
+            return wgpu::TextureFormat::ASTC6x5Unorm;
+        case filament::backend::TextureFormat::SRGB8_ALPHA8_ASTC_6x5:
+            return wgpu::TextureFormat::ASTC6x5UnormSrgb;
+        case filament::backend::TextureFormat::RGBA_ASTC_6x6:
+            return wgpu::TextureFormat::ASTC6x6Unorm;
+        case filament::backend::TextureFormat::SRGB8_ALPHA8_ASTC_6x6:
+            return wgpu::TextureFormat::ASTC6x6UnormSrgb;
+        case filament::backend::TextureFormat::RGBA_ASTC_8x5:
+            return wgpu::TextureFormat::ASTC8x5Unorm;
+        case filament::backend::TextureFormat::SRGB8_ALPHA8_ASTC_8x5:
+            return wgpu::TextureFormat::ASTC8x5UnormSrgb;
+        case filament::backend::TextureFormat::RGBA_ASTC_8x6:
+            return wgpu::TextureFormat::ASTC8x6Unorm;
+        case filament::backend::TextureFormat::SRGB8_ALPHA8_ASTC_8x6:
+            return wgpu::TextureFormat::ASTC8x6UnormSrgb;
+        case filament::backend::TextureFormat::RGBA_ASTC_8x8:
+            return wgpu::TextureFormat::ASTC8x8Unorm;
+        case filament::backend::TextureFormat::SRGB8_ALPHA8_ASTC_8x8:
+            return wgpu::TextureFormat::ASTC8x8UnormSrgb;
+        case filament::backend::TextureFormat::RGBA_ASTC_10x5:
+            return wgpu::TextureFormat::ASTC10x5Unorm;
+        case filament::backend::TextureFormat::SRGB8_ALPHA8_ASTC_10x5:
+            return wgpu::TextureFormat::ASTC10x5UnormSrgb;
+        case filament::backend::TextureFormat::RGBA_ASTC_10x6:
+            return wgpu::TextureFormat::ASTC10x6Unorm;
+        case filament::backend::TextureFormat::SRGB8_ALPHA8_ASTC_10x6:
+            return wgpu::TextureFormat::ASTC10x6UnormSrgb;
+        case filament::backend::TextureFormat::RGBA_ASTC_10x8:
+            return wgpu::TextureFormat::ASTC10x8Unorm;
+        case filament::backend::TextureFormat::SRGB8_ALPHA8_ASTC_10x8:
+            return wgpu::TextureFormat::ASTC10x8UnormSrgb;
+        case filament::backend::TextureFormat::RGBA_ASTC_10x10:
+            return wgpu::TextureFormat::ASTC10x10Unorm;
+        case filament::backend::TextureFormat::SRGB8_ALPHA8_ASTC_10x10:
+            return wgpu::TextureFormat::ASTC10x10UnormSrgb;
+        case filament::backend::TextureFormat::RGBA_ASTC_12x10:
+            return wgpu::TextureFormat::ASTC12x10Unorm;
+        case filament::backend::TextureFormat::SRGB8_ALPHA8_ASTC_12x10:
+            return wgpu::TextureFormat::ASTC12x10UnormSrgb;
+        case filament::backend::TextureFormat::RGBA_ASTC_12x12:
+            return wgpu::TextureFormat::ASTC12x12Unorm;
+        case filament::backend::TextureFormat::SRGB8_ALPHA8_ASTC_12x12:
+            return wgpu::TextureFormat::ASTC12x12UnormSrgb;
+        case filament::backend::TextureFormat::RED_RGTC1:
+            return wgpu::TextureFormat::BC4RUnorm;
+        case filament::backend::TextureFormat::SIGNED_RED_RGTC1:
+            return wgpu::TextureFormat::BC4RSnorm;
+        case filament::backend::TextureFormat::RED_GREEN_RGTC2:
+            return wgpu::TextureFormat::BC5RGUnorm;
+        case filament::backend::TextureFormat::SIGNED_RED_GREEN_RGTC2:
+            return wgpu::TextureFormat::BC5RGSnorm;
+        case filament::backend::TextureFormat::RGB_BPTC_UNSIGNED_FLOAT:
+            return wgpu::TextureFormat::BC6HRGBUfloat;
+        case filament::backend::TextureFormat::RGB_BPTC_SIGNED_FLOAT:
+            return wgpu::TextureFormat::BC6HRGBFloat;
+        case filament::backend::TextureFormat::RGBA_BPTC_UNORM:
+            return wgpu::TextureFormat::BC7RGBAUnorm;
+        case filament::backend::TextureFormat::SRGB_ALPHA_BPTC_UNORM:
+            return wgpu::TextureFormat::BC7RGBAUnormSrgb;
+        case filament::backend::TextureFormat::RGB565:
+            // No direct mapping in wgpu. Could potentially map to RGBA8Unorm
+            // and discard the alpha and lower precision.
+            return wgpu::TextureFormat::Undefined;
+        case filament::backend::TextureFormat::RGB9_E5:
+            return wgpu::TextureFormat::RGB9E5Ufloat;
+        case filament::backend::TextureFormat::RGB5_A1:
+            // No direct mapping in wgpu. Could potentially map to RGBA8Unorm
+            // and handle the packing/unpacking in shaders.
+            return wgpu::TextureFormat::Undefined;
+        case filament::backend::TextureFormat::RGBA4:
+            // No direct mapping in wgpu. Could potentially map to RGBA8Unorm
+            // and handle the packing/unpacking in shaders.
+            return wgpu::TextureFormat::Undefined;
+        case filament::backend::TextureFormat::RGB8:
+            // No direct sRGB equivalent in wgpu without alpha.
+            return wgpu::TextureFormat::RGBA8Unorm;
+        case filament::backend::TextureFormat::SRGB8:
+            // No direct sRGB equivalent in wgpu without alpha.
+            return wgpu::TextureFormat::RGBA8UnormSrgb;
+        case filament::backend::TextureFormat::RGB8_SNORM:
+            // No direct mapping in wgpu without alpha.
+            return wgpu::TextureFormat::RGBA8Snorm;
+        case filament::backend::TextureFormat::RGB8UI:
+            // No direct mapping in wgpu without alpha.
+            return wgpu::TextureFormat::RGBA8Uint;
+        case filament::backend::TextureFormat::RGB8I:
+            // No direct mapping in wgpu without alpha.
+            return wgpu::TextureFormat::RGBA8Sint;
+        case filament::backend::TextureFormat::R11F_G11F_B10F:
+            return wgpu::TextureFormat::RG11B10Ufloat;
+        case filament::backend::TextureFormat::UNUSED:
+            return wgpu::TextureFormat::Undefined;
+        case filament::backend::TextureFormat::RGB10_A2:
+            return wgpu::TextureFormat::RGB10A2Unorm;
+        case filament::backend::TextureFormat::RGB16F:
+            // No direct mapping in wgpu without alpha.
+            return wgpu::TextureFormat::RGBA16Float;
+        case filament::backend::TextureFormat::RGB16UI:
+            // No direct mapping in wgpu without alpha.
+            return wgpu::TextureFormat::RGBA16Uint;
+        case filament::backend::TextureFormat::RGB16I:
+            // No direct mapping in wgpu without alpha.
+            return wgpu::TextureFormat::RGBA16Sint;
+        case filament::backend::TextureFormat::RGB32F:
+            // No direct mapping in wgpu without alpha.
+            return wgpu::TextureFormat::RGBA32Float;
+        case filament::backend::TextureFormat::RGB32UI:
+            // No direct mapping in wgpu without alpha.
+            return wgpu::TextureFormat::RGBA32Uint;
+        case filament::backend::TextureFormat::RGB32I:
+            // No direct mapping in wgpu without alpha.
+            return wgpu::TextureFormat::RGBA32Sint;
+        case filament::backend::TextureFormat::DXT1_RGB:
+            return wgpu::TextureFormat::BC1RGBAUnorm;
+        case filament::backend::TextureFormat::DXT1_RGBA:
+            return wgpu::TextureFormat::BC1RGBAUnorm;
+        case filament::backend::TextureFormat::DXT3_RGBA:
+            return wgpu::TextureFormat::BC2RGBAUnorm;
+        case filament::backend::TextureFormat::DXT5_RGBA:
+            return wgpu::TextureFormat::BC3RGBAUnorm;
+        case filament::backend::TextureFormat::DXT1_SRGB:
+            return wgpu::TextureFormat::BC1RGBAUnormSrgb;
+        case filament::backend::TextureFormat::DXT1_SRGBA:
+            return wgpu::TextureFormat::BC1RGBAUnormSrgb;
+        case filament::backend::TextureFormat::DXT3_SRGBA:
+            return wgpu::TextureFormat::BC2RGBAUnormSrgb;
+        case filament::backend::TextureFormat::DXT5_SRGBA:
+            return wgpu::TextureFormat::BC3RGBAUnormSrgb;
+    }
+}
+
+wgpu::TextureView WGPUTexture::makeTextureView(const uint8_t& baseLevel, const uint8_t& levelCount,
+        SamplerType target) {
+    // starting with the defaults/basic configuration
+    wgpu::TextureViewDescriptor textureViewDescriptor{
+        .label = getUserTextureViewLabel(target),
+        .format = mFormat,
+        // dimension depends on target and is set below
+        .baseMipLevel = baseLevel,
+        .mipLevelCount = levelCount,
+        // baseArrayLayer is required, making a guess
+        .baseArrayLayer = 0,
+        .arrayLayerCount = mArrayLayerCount,
+        // Have not found an analog to aspect in other drivers, but ALL should be unrestrictive.
+        // TODO Can we make this better?
+        .aspect = wgpu::TextureAspect::All,
+        .usage = mUsage
+    };
+    // adjust for specific cases
+    switch (target) {
+        case SamplerType::SAMPLER_2D:
+            textureViewDescriptor.dimension = wgpu::TextureViewDimension::e2D;
+            break;
+        case SamplerType::SAMPLER_2D_ARRAY:
+            textureViewDescriptor.dimension = wgpu::TextureViewDimension::e2DArray;
+            break;
+        case SamplerType::SAMPLER_CUBEMAP:
+            textureViewDescriptor.dimension = wgpu::TextureViewDimension::Cube;
+            break;
+        case SamplerType::SAMPLER_EXTERNAL:
+            textureViewDescriptor.dimension = wgpu::TextureViewDimension::e2D;
+            break;
+        case SamplerType::SAMPLER_3D:
+            textureViewDescriptor.dimension = wgpu::TextureViewDimension::e3D;
+            break;
+        case SamplerType::SAMPLER_CUBEMAP_ARRAY:
+            textureViewDescriptor.dimension = wgpu::TextureViewDimension::CubeArray;
+            break;
+    }
+    wgpu::TextureView textureView = mTexture.CreateView(&textureViewDescriptor);
+    FILAMENT_CHECK_POSTCONDITION(textureView)
+            << "Failed to create texture view " << textureViewDescriptor.label;
+    return textureView;
+}
+
+WGPURenderTarget::Attachment WGPURenderTarget::getDrawColorAttachment(size_t index) {
+    assert_invariant( index < MRT::MAX_SUPPORTED_RENDER_TARGET_COUNT);
+    auto result = color[index];
+    if (index == 0 && defaultRenderTarget) {
+
+    }
+
+    return result;
+}
+
+wgpu::LoadOp WGPURenderTarget::getLoadOperation(RenderPassParams const& params,
+                                             TargetBufferFlags buffer) {
+    auto clearFlags = params.flags.clear;
+    auto discardStartFlags = params.flags.discardStart;
+    if (any(clearFlags & buffer)) {
+        return wgpu::LoadOp::Clear;
+    } else if (any(discardStartFlags & buffer)) {
+        return wgpu::LoadOp::Clear;
+    }
+    return wgpu::LoadOp::Load;
+}
+
+wgpu::StoreOp WGPURenderTarget::getStoreOperation(RenderPassParams const& params,
+                                               TargetBufferFlags buffer) {
+    const auto discardEndFlags = params.flags.discardEnd;
+    if (any(discardEndFlags & buffer)) {
+        return wgpu::StoreOp::Discard;
+    }
+    return wgpu::StoreOp::Store;
+}
+void WGPURenderTarget::setUpRenderPassAttachments(wgpu::RenderPassDescriptor& descriptor,
+        wgpu::TextureView const& textureView, RenderPassParams const& params) {
+    // auto discardFlags = params.flags.discardEnd;
+    // (void) discardFlags;
+    // std::vector<wgpu::RenderPassColorAttachment> colorAttachments;
+    colorAttachments.clear();
+    for (size_t i = 0; i < 1/*MRT::MAX_SUPPORTED_RENDER_TARGET_COUNT*/; i++) {
+        // auto attachment = getDrawColorAttachment(i);
+        // if (attachment) {
+            wgpu::RenderPassColorAttachment colorAttachment;
+            colorAttachment.view = textureView;
+            colorAttachment.loadOp  = getLoadOperation(params, getTargetBufferFlagsAt(i));
+            colorAttachment.storeOp = getStoreOperation(params, getTargetBufferFlagsAt(i));
+            colorAttachment.clearValue = { params.clearColor.r, params.clearColor.g, params.clearColor.b, params.clearColor.a };
+            colorAttachments.emplace_back(colorAttachment);
+        // }
+    }
+    descriptor.colorAttachments = colorAttachments.data();
+    descriptor.colorAttachmentCount = colorAttachments.size();
+    descriptor.depthStencilAttachment = nullptr;
+    descriptor.timestampWrites = nullptr;
+}
+
+
 }// namespace filament::backend

filament/backend/src/webgpu/WebGPUHandles.h

@@ -27,6 +27,8 @@
 
 #include <webgpu/webgpu_cpp.h>
 
+#include <array>
+#include <bitset>
 #include <cstdint>
 #include <vector>
 
@@ -98,80 +100,124 @@ struct WGPUBufferObject : HwBufferObject {
     wgpu::Buffer buffer = nullptr;
     const BufferObjectBinding bufferObjectBinding;
 };
+
 class WebGPUDescriptorSetLayout final : public HwDescriptorSetLayout {
 public:
+
+    enum class BindGroupEntryType : uint8_t {
+        UNIFORM_BUFFER,
+        TEXTURE_VIEW,
+        SAMPLER
+    };
+
+    struct BindGroupEntryInfo final {
+        uint8_t binding = 0;
+        BindGroupEntryType type = BindGroupEntryType::UNIFORM_BUFFER;
+        bool hasDynamicOffset = false;
+    };
+
     WebGPUDescriptorSetLayout(DescriptorSetLayout const& layout, wgpu::Device const& device);
     ~WebGPUDescriptorSetLayout();
     [[nodiscard]] const wgpu::BindGroupLayout& getLayout() const { return mLayout; }
-    [[nodiscard]] uint getLayoutSize() const { return mLayoutSize; }
+    [[nodiscard]] std::vector<BindGroupEntryInfo> const& getBindGroupEntries() const {
+        return mBindGroupEntries;
+    }
 
 private:
     // TODO: If this is useful elsewhere, remove it from this class
     // Convert Filament Shader Stage Flags bitmask to webgpu equivilant
     static wgpu::ShaderStage filamentStageToWGPUStage(ShaderStageFlags fFlags);
-    uint mLayoutSize;
+    std::vector<BindGroupEntryInfo> mBindGroupEntries;
     wgpu::BindGroupLayout mLayout;
 };
 
 class WebGPUDescriptorSet final : public HwDescriptorSet {
 public:
-    WebGPUDescriptorSet(const wgpu::BindGroupLayout& layout, uint layoutSize);
+    static void initializeDummyResourcesIfNotAlready(wgpu::Device const&,
+            wgpu::TextureFormat aColorFormat);
+
+    WebGPUDescriptorSet(wgpu::BindGroupLayout const& layout,
+            std::vector<WebGPUDescriptorSetLayout::BindGroupEntryInfo> const& bindGroupEntries);
     ~WebGPUDescriptorSet();
 
-    wgpu::BindGroup lockAndReturn(wgpu::Device const& device);
-    void addEntry(uint index, wgpu::BindGroupEntry&& entry);
+    wgpu::BindGroup lockAndReturn(wgpu::Device const&);
+    void addEntry(unsigned int index, wgpu::BindGroupEntry&& entry);
+    [[nodiscard]] uint32_t const* setDynamicOffsets(uint32_t const* offsets);
     [[nodiscard]] bool getIsLocked() const { return mBindGroup != nullptr; }
-
+    [[nodiscard]] size_t countEntitiesWithDynamicOffsets() const;
 private:
+
+    static wgpu::Buffer sDummyUniformBuffer;
+    static wgpu::Texture sDummyTexture;
+    static wgpu::TextureView sDummyTextureView;
+    static wgpu::Sampler sDummySampler;
+
+    static std::vector<wgpu::BindGroupEntry> createDummyEntriesSortedByBinding(
+            std::vector<filament::backend::WebGPUDescriptorSetLayout::BindGroupEntryInfo> const&);
+
     // TODO: Consider storing what we used to make the layout. However we need to essentially
     // Recreate some of the info (Sampler in slot X with the actual sampler) so letting Dawn confirm
     // there isn't a mismatch may be easiest.
     // Also storing the wgpu ObjectBase takes care of ownership challenges in theory
-    wgpu::BindGroupLayout mLayout;
-    std::vector<wgpu::BindGroupEntry> entries;
-    wgpu::BindGroup mBindGroup;
+    wgpu::BindGroupLayout mLayout = nullptr;
+    static constexpr uint8_t INVALID_INDEX = MAX_DESCRIPTOR_COUNT + 1;
+    std::array<uint8_t, MAX_DESCRIPTOR_COUNT> mEntryIndexByBinding {};
+    std::vector<wgpu::BindGroupEntry> mEntriesSortedByBinding;
+    std::bitset<MAX_DESCRIPTOR_COUNT> mEntriesByBindingWithDynamicOffsets {};
+    std::bitset<MAX_DESCRIPTOR_COUNT> mEntriesByBindingAdded {};
+    std::vector<uint32_t> mDynamicOffsets;
+    wgpu::BindGroup mBindGroup = nullptr;
 };
 
-// TODO: Currently WGPUTexture is not used by WebGPU for useful task.
-// Update the struct when used by WebGPU driver.
-struct WGPUTexture : public HwTexture {
+class WGPUTexture : public HwTexture {
+public:
     WGPUTexture(SamplerType target, uint8_t levels, TextureFormat format, uint8_t samples,
-            uint32_t width, uint32_t height, uint32_t depth, TextureUsage usage) noexcept;
+            uint32_t width, uint32_t height, uint32_t depth, TextureUsage usage,
+            wgpu::Device const& device) noexcept;
 
-    // constructors for creating texture views
-    WGPUTexture(WGPUTexture const* src, uint8_t baseLevel, uint8_t levelCount) noexcept;
+    WGPUTexture(WGPUTexture* src, uint8_t baseLevel, uint8_t levelCount) noexcept;
 
-    wgpu::Texture texture = nullptr;
-    // TODO: Adding this but not yet setting it up. Filament "Textures" are combined image samplers,
-    // rep both.
-    wgpu::Sampler sampler = nullptr;
-    //TODO: Not sure all the ways HwTexture is used. Overloading like this might be entirely wrong.
-    wgpu::TextureView texView = nullptr;
+    const wgpu::Texture& getTexture() const { return mTexture; }
+    const wgpu::TextureView& getTexView() const { return mTexView; }
+
+    // Public to allow checking for support of a texture format
+    static wgpu::TextureFormat fToWGPUTextureFormat(const filament::backend::TextureFormat& fUsage);
+
+private:
+    wgpu::TextureView makeTextureView(const uint8_t& baseLevel, const uint8_t& levelCount,
+            SamplerType target);
+    // CreateTextureR has info for a texture and sampler. Texture Views are needed for binding,
+    // along with a sampler Current plan: Inherit the sampler and Texture to always exist (It is a
+    // ref counted pointer) when making views. View is optional
+    wgpu::Texture mTexture = nullptr;
+    wgpu::TextureUsage mUsage = wgpu::TextureUsage::None;
+    wgpu::TextureFormat mFormat = wgpu::TextureFormat::Undefined;
+    uint32_t mArrayLayerCount = 1;
+    wgpu::TextureView mTexView = nullptr;
+    wgpu::TextureUsage fToWGPUTextureUsage(const filament::backend::TextureUsage& fUsage);
 };
 
 struct WGPURenderPrimitive : public HwRenderPrimitive {
-    WGPURenderPrimitive() {}
-
-    void setBuffers(WGPUVertexBufferInfo const* const vbi,
-            WGPUVertexBuffer* vertexBuffer, WGPUIndexBuffer* indexBuffer);
 
     WGPUVertexBuffer* vertexBuffer = nullptr;
     WGPUIndexBuffer* indexBuffer = nullptr;
 };
 
-// TODO: Currently WGPURenderTarget is not used by WebGPU for useful task.
-// Update the struct when used by WebGPU driver.
-struct WGPURenderTarget : public HwRenderTarget {
+class WGPURenderTarget : public HwRenderTarget {
+public:
     class Attachment {
     public:
-        friend struct WGPURenderTarget;
+        friend class WGPURenderTarget;
 
         Attachment() = default;
         Attachment(WGPUTexture* gpuTexture, uint8_t level = 0, uint16_t layer = 0)
             : level(level),
               layer(layer),
-              texture(gpuTexture->texture),
+              texture(gpuTexture->getTexture()),
               mWGPUTexture(gpuTexture) {}
+        operator bool() const {
+            return mWGPUTexture != nullptr;
+        }
 
         uint8_t level = 0;
         uint16_t layer = 0;
@@ -187,8 +233,8 @@ struct WGPURenderTarget : public HwRenderTarget {
         : HwRenderTarget(0, 0),
           defaultRenderTarget(true) {}
 
-    void setUpRenderPassAttachments(wgpu::RenderPassDescriptor* descriptor,
-            const RenderPassParams& params);
+    void setUpRenderPassAttachments(wgpu::RenderPassDescriptor& descriptor,
+            wgpu::TextureView const& textureView, RenderPassParams const& params);
 
     math::uint2 getAttachmentSize() noexcept;
 
@@ -198,15 +244,15 @@ struct WGPURenderTarget : public HwRenderTarget {
     Attachment getDrawColorAttachment(size_t index);
     Attachment getReadColorAttachment(size_t index);
 
+    static wgpu::LoadOp getLoadOperation(const RenderPassParams& params, TargetBufferFlags buffer);
+    static wgpu::StoreOp getStoreOperation(const RenderPassParams& params, TargetBufferFlags buffer);
 private:
-    static wgpu::LoadOp getLoadAction(const RenderPassParams& params, TargetBufferFlags buffer);
-    static wgpu::LoadOp getStoreAction(const RenderPassParams& params, TargetBufferFlags buffer);
-
     bool defaultRenderTarget = false;
     uint8_t samples = 1;
 
     Attachment color[MRT::MAX_SUPPORTED_RENDER_TARGET_COUNT] = {};
     math::uint2 attachmentSize = {};
+    std::vector<wgpu::RenderPassColorAttachment> colorAttachments {};
 };
 
 }// namespace filament::backend

filament/backend/src/webgpu/WebGPUPipelineCreation.cpp

@@ -0,0 +1,255 @@
+/*
+ * 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 "WebGPUPipelineCreation.h"
+
+#include "WebGPUHandles.h"
+
+#include <backend/DriverEnums.h>
+#include <backend/TargetBufferInfo.h>
+
+#include <utils/Panic.h>
+#include <utils/debug.h>
+
+#include <webgpu/webgpu_cpp.h>
+
+#include <array>
+#include <cstdint>
+#include <sstream>
+
+namespace filament::backend {
+
+namespace {
+
+constexpr wgpu::PrimitiveTopology toWebGPU(PrimitiveType primitiveType) {
+    switch (primitiveType) {
+        case PrimitiveType::POINTS:
+            return wgpu::PrimitiveTopology::PointList;
+        case PrimitiveType::LINES:
+            return wgpu::PrimitiveTopology::LineList;
+        case PrimitiveType::LINE_STRIP:
+            return wgpu::PrimitiveTopology::LineStrip;
+        case PrimitiveType::TRIANGLES:
+            return wgpu::PrimitiveTopology::TriangleList;
+        case PrimitiveType::TRIANGLE_STRIP:
+            return wgpu::PrimitiveTopology::TriangleStrip;
+    }
+}
+
+constexpr wgpu::CullMode toWebGPU(CullingMode cullMode) {
+    switch (cullMode) {
+        case CullingMode::NONE:
+            return wgpu::CullMode::None;
+        case CullingMode::FRONT:
+            return wgpu::CullMode::Front;
+        case CullingMode::BACK:
+            return wgpu::CullMode::Back;
+        case CullingMode::FRONT_AND_BACK:
+            // no WegGPU equivalent of front and back
+            FILAMENT_CHECK_POSTCONDITION(false)
+                    << "WebGPU does not support CullingMode::FRONT_AND_BACK";
+            return wgpu::CullMode::Undefined;
+    }
+}
+
+constexpr wgpu::CompareFunction toWebGPU(SamplerCompareFunc compareFunction) {
+    switch (compareFunction) {
+        case SamplerCompareFunc::LE:
+            return wgpu::CompareFunction::LessEqual;
+        case SamplerCompareFunc::GE:
+            return wgpu::CompareFunction::GreaterEqual;
+        case SamplerCompareFunc::L:
+            return wgpu::CompareFunction::Less;
+        case SamplerCompareFunc::G:
+            return wgpu::CompareFunction::Greater;
+        case SamplerCompareFunc::E:
+            return wgpu::CompareFunction::Equal;
+        case SamplerCompareFunc::NE:
+            return wgpu::CompareFunction::NotEqual;
+        case SamplerCompareFunc::A:
+            return wgpu::CompareFunction::Always;
+        case SamplerCompareFunc::N:
+            return wgpu::CompareFunction::Never;
+    }
+}
+
+constexpr wgpu::StencilOperation toWebGPU(StencilOperation stencilOp) {
+    switch (stencilOp) {
+        case StencilOperation::KEEP:
+            return wgpu::StencilOperation::Keep;
+        case StencilOperation::ZERO:
+            return wgpu::StencilOperation::Zero;
+        case StencilOperation::REPLACE:
+            return wgpu::StencilOperation::Replace;
+        case StencilOperation::INCR:
+            return wgpu::StencilOperation::IncrementClamp;
+        case StencilOperation::INCR_WRAP:
+            return wgpu::StencilOperation::IncrementWrap;
+        case StencilOperation::DECR:
+            return wgpu::StencilOperation::DecrementClamp;
+        case StencilOperation::DECR_WRAP:
+            return wgpu::StencilOperation::DecrementWrap;
+        case StencilOperation::INVERT:
+            return wgpu::StencilOperation::Invert;
+    }
+}
+
+constexpr wgpu::BlendOperation toWebGPU(BlendEquation blendOp) {
+    switch (blendOp) {
+        case BlendEquation::ADD:
+            return wgpu::BlendOperation::Add;
+        case BlendEquation::SUBTRACT:
+            return wgpu::BlendOperation::Subtract;
+        case BlendEquation::REVERSE_SUBTRACT:
+            return wgpu::BlendOperation::ReverseSubtract;
+        case BlendEquation::MIN:
+            return wgpu::BlendOperation::Min;
+        case BlendEquation::MAX:
+            return wgpu::BlendOperation::Max;
+    }
+}
+
+constexpr wgpu::BlendFactor toWebGPU(BlendFunction blendFunction) {
+    switch (blendFunction) {
+        case BlendFunction::ZERO:
+            return wgpu::BlendFactor::Zero;
+        case BlendFunction::ONE:
+            return wgpu::BlendFactor::One;
+        case BlendFunction::SRC_COLOR:
+            return wgpu::BlendFactor::Src;
+        case BlendFunction::ONE_MINUS_SRC_COLOR:
+            return wgpu::BlendFactor::OneMinusSrc;
+        case BlendFunction::DST_COLOR:
+            return wgpu::BlendFactor::Dst;
+        case BlendFunction::ONE_MINUS_DST_COLOR:
+            return wgpu::BlendFactor::OneMinusDst;
+        case BlendFunction::SRC_ALPHA:
+            return wgpu::BlendFactor::SrcAlpha;
+        case BlendFunction::ONE_MINUS_SRC_ALPHA:
+            return wgpu::BlendFactor::OneMinusSrcAlpha;
+        case BlendFunction::DST_ALPHA:
+            return wgpu::BlendFactor::DstAlpha;
+        case BlendFunction::ONE_MINUS_DST_ALPHA:
+            return wgpu::BlendFactor::OneMinusDstAlpha;
+        case BlendFunction::SRC_ALPHA_SATURATE:
+            return wgpu::BlendFactor::SrcAlphaSaturated;
+    }
+}
+
+}// namespace
+
+wgpu::RenderPipeline createWebGPURenderPipeline(wgpu::Device const& device,
+        WGPUProgram const& program, WGPUVertexBufferInfo const& vertexBufferInfo,
+        wgpu::PipelineLayout const& layout, RasterState const& rasterState,
+        StencilState const& stencilState, PolygonOffset const& polygonOffset,
+        PrimitiveType primitiveType, wgpu::TextureFormat colorFormat,
+        wgpu::TextureFormat depthFormat) {
+    assert_invariant(program.vertexShaderModule);
+    const wgpu::DepthStencilState depthStencilState {
+        .format = depthFormat,
+        .depthWriteEnabled = rasterState.depthWrite,
+        .depthCompare = toWebGPU(rasterState.depthFunc),
+        .stencilFront = {
+            .compare = toWebGPU(stencilState.front.stencilFunc),
+            .failOp = toWebGPU(stencilState.front.stencilOpStencilFail),
+            .depthFailOp = toWebGPU(stencilState.front.stencilOpDepthFail),
+            .passOp = toWebGPU(stencilState.front.stencilOpDepthStencilPass),
+        },
+        .stencilBack = {
+            .compare = toWebGPU(stencilState.back.stencilFunc),
+            .failOp = toWebGPU(stencilState.back.stencilOpStencilFail),
+            .depthFailOp = toWebGPU(stencilState.back.stencilOpDepthFail),
+            .passOp = toWebGPU(stencilState.back.stencilOpDepthStencilPass),
+        },
+        .stencilReadMask = 0,
+        .stencilWriteMask = stencilState.stencilWrite ? 0xFFFFFFFF : 0,
+        .depthBias = static_cast<int32_t>(polygonOffset.constant),
+        .depthBiasSlopeScale = polygonOffset.slope,
+        .depthBiasClamp = 0.0f
+    };
+    std::stringstream pipelineLabelStream;
+    pipelineLabelStream << program.name.c_str() << " pipeline";
+    const auto pipelineLabel = pipelineLabelStream.str();
+    wgpu::RenderPipelineDescriptor pipelineDescriptor{
+        .label = wgpu::StringView(pipelineLabel),
+        .layout = layout,
+        .vertex = {
+            .module = program.vertexShaderModule,
+            .entryPoint = "main",
+            .constantCount = program.constants.size(),
+            .constants = program.constants.data(),
+            .bufferCount = vertexBufferInfo.getVertexBufferLayoutSize(),
+            .buffers = vertexBufferInfo.getVertexBufferLayout()
+        },
+        .primitive = {
+            .topology = toWebGPU(primitiveType),
+            // TODO should we assume some constant format here or is there a way to get
+            //      this from PipelineState somehow or elsewhere?
+            //      Perhaps, cache/assert format from index buffers as they are requested?
+            .stripIndexFormat = wgpu::IndexFormat::Undefined,
+            .frontFace = rasterState.inverseFrontFaces ? wgpu::FrontFace::CW : wgpu::FrontFace::CCW,
+            .cullMode = toWebGPU(rasterState.culling),
+            // TODO no depth clamp in WebGPU supported directly. unclippedDepth is close, so we are
+            //      starting there
+            .unclippedDepth = !rasterState.depthClamp &&
+                              device.HasFeature(wgpu::FeatureName::DepthClipControl)
+        },
+        .depthStencil = &depthStencilState,
+        .multisample = {
+            .count = 1, // TODO need to get this from the render target
+            .mask = 0xFFFFFFFF,
+            .alphaToCoverageEnabled = rasterState.alphaToCoverage
+        },
+        .fragment = nullptr // will add below if fragment module is included
+    };
+    wgpu::FragmentState fragmentState = {};
+    std::array<wgpu::ColorTargetState, MRT::MAX_SUPPORTED_RENDER_TARGET_COUNT> colorTargets {};
+    const wgpu::BlendState blendState {
+        .color = {
+            .operation = toWebGPU(rasterState.blendEquationRGB),
+            .srcFactor = toWebGPU(rasterState.blendFunctionSrcRGB),
+            .dstFactor = toWebGPU(rasterState.blendFunctionDstRGB)
+        },
+        .alpha = {
+            .operation = toWebGPU(rasterState.blendEquationAlpha),
+            .srcFactor = toWebGPU(rasterState.blendFunctionSrcAlpha),
+            .dstFactor = toWebGPU(rasterState.blendFunctionDstAlpha)
+        }
+    };
+    if (program.fragmentShaderModule != nullptr) {
+        fragmentState.module = program.fragmentShaderModule;
+        fragmentState.entryPoint = "main";
+        fragmentState.constantCount = program.constants.size(),
+        fragmentState.constants = program.constants.data(),
+        fragmentState.targetCount = 1; // TODO need to get this from the render target
+        fragmentState.targets = colorTargets.data();
+        assert_invariant(fragmentState.targetCount <= MRT::MAX_SUPPORTED_RENDER_TARGET_COUNT);
+        for (size_t targetIndex = 0; targetIndex < fragmentState.targetCount; targetIndex++) {
+            auto& colorTarget = colorTargets[targetIndex];
+            colorTarget.format = colorFormat;
+            colorTarget.blend = rasterState.hasBlending() ? &blendState : nullptr;
+            colorTarget.writeMask =
+                    rasterState.colorWrite ? wgpu::ColorWriteMask::All : wgpu::ColorWriteMask::None;
+        }
+        pipelineDescriptor.fragment = &fragmentState;
+    }
+    const wgpu::RenderPipeline pipeline = device.CreateRenderPipeline(&pipelineDescriptor);
+    FILAMENT_CHECK_POSTCONDITION(pipeline)
+            << "Failed to create render pipeline for " << pipelineDescriptor.label;
+    return pipeline;
+}
+
+}// namespace filament::backend

filament/backend/src/webgpu/WebGPUPipelineCreation.h

@@ -0,0 +1,46 @@
+/*
+ * 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_WEBGPUPIPELINECREATION_H
+#define TNT_FILAMENT_BACKEND_WEBGPUPIPELINECREATION_H
+
+#include <cstdint>
+
+namespace wgpu {
+class Device;
+class PipelineLayout;
+class RenderPipeline;
+enum class TextureFormat : uint32_t;
+}// namespace wgpu
+
+namespace filament::backend {
+
+struct PolygonOffset;
+enum class PrimitiveType : uint8_t;
+struct RasterState;
+struct StencilState;
+
+class WGPUVertexBufferInfo;
+class WGPUProgram;
+
+[[nodiscard]] wgpu::RenderPipeline createWebGPURenderPipeline(wgpu::Device const&,
+        WGPUProgram const&, WGPUVertexBufferInfo const&, wgpu::PipelineLayout const&,
+        RasterState const&, StencilState const&, PolygonOffset const&, PrimitiveType,
+        wgpu::TextureFormat colorFormat, wgpu::TextureFormat depthFormat);
+
+}// namespace filament::backend
+
+#endif// TNT_FILAMENT_BACKEND_WEBGPUPIPELINECREATION_H

filament/backend/src/webgpu/WebGPUSwapChain.cpp

@@ -73,7 +73,8 @@ void printSurfaceCapabilitiesDetails(wgpu::SurfaceCapabilities const& capabiliti
 #endif
 
 #if FWGPU_ENABLED(FWGPU_PRINT_SYSTEM)
-void printSurfaceConfiguration(wgpu::SurfaceConfiguration const& config) {
+void printSurfaceConfiguration(wgpu::SurfaceConfiguration const& config,
+        wgpu::TextureFormat depthFormat) {
     std::stringstream formatStream{};
     formatStream << config.format;
     std::stringstream usageStream{};
@@ -82,6 +83,8 @@ void printSurfaceConfiguration(wgpu::SurfaceConfiguration const& config) {
     alphaModeStream << config.alphaMode;
     std::stringstream presentModeStream{};
     presentModeStream << config.presentMode;
+    std::stringstream depthFormatStream;
+    depthFormatStream << depthFormat;
     FWGPU_LOGI << "WebGPU surface configuration:" << utils::io::endl;
     FWGPU_LOGI << "  surface format: " << formatStream.str() << utils::io::endl;
     FWGPU_LOGI << "  surface usage: " << usageStream.str() << utils::io::endl;
@@ -98,10 +101,11 @@ void printSurfaceConfiguration(wgpu::SurfaceConfiguration const& config) {
     FWGPU_LOGI << "  surface width: " << config.width << utils::io::endl;
     FWGPU_LOGI << "  surface height: " << config.height << utils::io::endl;
     FWGPU_LOGI << "  surface present mode: " << presentModeStream.str() << utils::io::endl;
+    FWGPU_LOGI << "WebGPU selected depth format: " << depthFormatStream.str() << utils::io::endl;
 }
 #endif
 
-wgpu::TextureFormat selectColorFormat(size_t availableFormatsCount,
+[[nodiscard]] constexpr wgpu::TextureFormat selectColorFormat(size_t availableFormatsCount,
         wgpu::TextureFormat const* availableFormats, bool useSRGBColorSpace) {
     const std::array expectedColorFormats =
             useSRGBColorSpace ?
@@ -119,7 +123,21 @@ wgpu::TextureFormat selectColorFormat(size_t availableFormatsCount,
     return *firstFoundColorFormat;
 }
 
-wgpu::PresentMode selectPresentMode(size_t availablePresentModesCount,
+[[nodiscard]] constexpr wgpu::TextureFormat selectDepthFormat(bool depth32FloatStencil8Enabled,
+        bool needStencil) {
+    if (needStencil) {
+        if (depth32FloatStencil8Enabled) {
+            return wgpu::TextureFormat::Depth32FloatStencil8;
+        } else {
+            return wgpu::TextureFormat::Depth24PlusStencil8;
+        }
+    } else {
+        // other options: Depth16Unorm or Depth24Plus
+        return wgpu::TextureFormat::Depth32Float;
+    }
+}
+
+[[nodiscard]] constexpr wgpu::PresentMode selectPresentMode(size_t availablePresentModesCount,
         wgpu::PresentMode const* availablePresentModes) {
     // Verify that our chosen present mode is supported. In practice all devices support the FIFO
     // mode, but we check for it anyway for completeness.  (and to avoid validation warnings)
@@ -133,7 +151,7 @@ wgpu::PresentMode selectPresentMode(size_t availablePresentModesCount,
     return desiredPresentMode;
 }
 
-wgpu::CompositeAlphaMode selectAlphaMode(size_t availableAlphaModesCount,
+[[nodiscard]] constexpr wgpu::CompositeAlphaMode selectAlphaMode(size_t availableAlphaModesCount,
         wgpu::CompositeAlphaMode const* availableAlphaModes) {
     bool autoAvailable = false;
     bool inheritAvailable = false;
@@ -204,13 +222,58 @@ void initConfig(wgpu::SurfaceConfiguration& config, wgpu::Device const& device,
     config.alphaMode = selectAlphaMode(capabilities.alphaModeCount, capabilities.alphaModes);
 }
 
+[[nodiscard]] wgpu::Texture createDepthTexture(wgpu::Device const& device,
+        wgpu::Extent2D const& extent, wgpu::TextureFormat depthFormat) {
+    wgpu::TextureDescriptor descriptor{ .label = "depth_texture",
+        .usage = wgpu::TextureUsage::TextureBinding | wgpu::TextureUsage::RenderAttachment,
+        .dimension = wgpu::TextureDimension::e2D,
+        .size = { .width = extent.width, .height = extent.height, .depthOrArrayLayers = 1 },
+        .format = depthFormat,
+        .mipLevelCount = 1,
+        .sampleCount = 1,
+        .viewFormatCount = 1,
+        .viewFormats = &depthFormat
+    };
+    wgpu::Texture depthTexture = device.CreateTexture(&descriptor);
+    FILAMENT_CHECK_POSTCONDITION(depthTexture) << "Failed to create depth texture with width "
+                                               << extent.width << " and height " << extent.height;
+    return depthTexture;
+}
+
+[[nodiscard]] wgpu::TextureView createDepthTextureView(wgpu::Texture const& depthTexture,
+        wgpu::TextureFormat depthFormat, bool needStencil) {
+    wgpu::TextureViewDescriptor descriptor{
+        .label = "depth_texture_view",
+        .format = depthFormat,
+        .dimension = wgpu::TextureViewDimension::e2D,
+        .baseMipLevel = 0,
+        .mipLevelCount = 1,
+        .baseArrayLayer = 0,
+        .arrayLayerCount = 1,
+        .aspect = wgpu::TextureAspect::DepthOnly,
+        .usage = wgpu::TextureUsage::TextureBinding | wgpu::TextureUsage::RenderAttachment
+    };
+    if (needStencil) {
+        descriptor.aspect = wgpu::TextureAspect::All;
+    }
+    wgpu::TextureView depthTextureView = depthTexture.CreateView(&descriptor);
+    FILAMENT_CHECK_POSTCONDITION(depthTextureView) << "Failed to create depth texture view";
+    return depthTextureView;
+}
+
 }// namespace
 
 namespace filament::backend {
 
 WebGPUSwapChain::WebGPUSwapChain(wgpu::Surface&& surface, wgpu::Extent2D const& surfaceSize,
-        wgpu::Adapter& adapter, wgpu::Device& device, uint64_t flags)
-    : mSurface(surface) {
+        wgpu::Adapter const& adapter, wgpu::Device const& device, uint64_t flags)
+    : mDevice(device),
+      mSurface(surface),
+      mNeedStencil((flags & SWAP_CHAIN_HAS_STENCIL_BUFFER) != 0),
+      mDepthFormat(selectDepthFormat(device.HasFeature(wgpu::FeatureName::Depth32FloatStencil8),
+              mNeedStencil)),
+      mDepthTexture(createDepthTexture(device, surfaceSize, mDepthFormat)),
+      mDepthTextureView(createDepthTextureView(mDepthTexture, mDepthFormat, mNeedStencil)) {
     wgpu::SurfaceCapabilities capabilities = {};
     if (!mSurface.GetCapabilities(adapter, &capabilities)) {
         FWGPU_LOGW << "Failed to get WebGPU surface capabilities" << utils::io::endl;
@@ -221,12 +284,13 @@ WebGPUSwapChain::WebGPUSwapChain(wgpu::Surface&& surface, wgpu::Extent2D const&
     }
     const bool useSRGBColorSpace = (flags & SWAP_CHAIN_CONFIG_SRGB_COLORSPACE) != 0;
     initConfig(mConfig, device, capabilities, surfaceSize, useSRGBColorSpace);
+#if FWGPU_ENABLED(FWGPU_PRINT_SYSTEM)
+    printSurfaceConfiguration(mConfig, mDepthFormat);
+#endif
     mSurface.Configure(&mConfig);
 }
 
-WebGPUSwapChain::~WebGPUSwapChain() {
-    mSurface.Unconfigure();
-}
+WebGPUSwapChain::~WebGPUSwapChain() { mSurface.Unconfigure(); }
 
 void WebGPUSwapChain::setExtent(wgpu::Extent2D const& currentSurfaceSize) {
     FILAMENT_CHECK_POSTCONDITION(currentSurfaceSize.width > 0 || currentSurfaceSize.height > 0)
@@ -235,14 +299,16 @@ void WebGPUSwapChain::setExtent(wgpu::Extent2D const& currentSurfaceSize) {
     if (mConfig.width != currentSurfaceSize.width || mConfig.height != currentSurfaceSize.height) {
         mConfig.width = currentSurfaceSize.width;
         mConfig.height = currentSurfaceSize.height;
-#if FWGPU_ENABLED(FWGPU_PRINT_SYSTEM)
-        printSurfaceConfiguration(mConfig);
-#endif
         FWGPU_LOGD << "Resizing to width " << mConfig.width << " height " << mConfig.height
                    << utils::io::endl;
-        // TODO we may need to ensure no surface texture is flight when we do this. some
+#if FWGPU_ENABLED(FWGPU_PRINT_SYSTEM)
+        printSurfaceConfiguration(mConfig, mDepthFormat);
+#endif
+        // TODO we may need to ensure no surface texture is in flight when we do this. some
         //      synchronization may be necessary
         mSurface.Configure(&mConfig);
+        mDepthTexture = createDepthTexture(mDevice, currentSurfaceSize, mDepthFormat);
+        mDepthTextureView = createDepthTextureView(mDepthTexture, mDepthFormat, mNeedStencil);
     }
 }
 
@@ -257,7 +323,7 @@ wgpu::TextureView WebGPUSwapChain::getCurrentSurfaceTextureView(
     // Create a view for this surface texture
     // TODO: review these initiliazations as webgpu pipeline gets mature
     wgpu::TextureViewDescriptor textureViewDescriptor = {
-        .label = "texture_view",
+        .label = "surface_texture_view",
         .format = surfaceTexture.texture.GetFormat(),
         .dimension = wgpu::TextureViewDimension::e2D,
         .baseMipLevel = 0,

filament/backend/src/webgpu/WebGPUSwapChain.h

@@ -29,18 +29,29 @@ namespace filament::backend {
 class WebGPUSwapChain final : public Platform::SwapChain, HwSwapChain {
 public:
     WebGPUSwapChain(wgpu::Surface&& surface, wgpu::Extent2D const& surfaceSize,
-            wgpu::Adapter& adapter, wgpu::Device& device, uint64_t flags);
+            wgpu::Adapter const& adapter, wgpu::Device const& device, uint64_t flags);
     ~WebGPUSwapChain();
 
-    wgpu::TextureView getCurrentSurfaceTextureView(wgpu::Extent2D const&);
+    [[nodiscard]] wgpu::TextureFormat getColorFormat() const { return mConfig.format; }
+
+    [[nodiscard]] wgpu::TextureFormat getDepthFormat() const { return mDepthFormat; }
+
+    [[nodiscard]] wgpu::TextureView getCurrentSurfaceTextureView(wgpu::Extent2D const&);
+
+    [[nodiscard]] wgpu::TextureView getDepthTextureView() const { return mDepthTextureView; }
 
     void present();
 
 private:
     void setExtent(wgpu::Extent2D const&);
 
+    wgpu::Device mDevice = nullptr;
     wgpu::Surface mSurface = {};
     wgpu::SurfaceConfiguration mConfig = {};
+    bool mNeedStencil = false;
+    wgpu::TextureFormat mDepthFormat = wgpu::TextureFormat::Undefined;
+    wgpu::Texture mDepthTexture = nullptr;
+    wgpu::TextureView mDepthTextureView = nullptr;
 };
 
 } // namespace filament::backend

filament/backend/src/webgpu/platform/WebGPUPlatform.cpp

@@ -98,10 +98,46 @@ wgpu::Adapter WebGPUPlatform::requestAdapter(wgpu::Surface const& surface) {
 }
 
 wgpu::Device WebGPUPlatform::requestDevice(wgpu::Adapter const& adapter) {
-    // TODO consider passing required features and/or limits
+    // TODO consider passing limits
+    constexpr std::array optionalFeatures = { wgpu::FeatureName::DepthClipControl,
+        wgpu::FeatureName::Depth32FloatStencil8, wgpu::FeatureName::CoreFeaturesAndLimits };
+
+    constexpr std::array requiredFeatures = { wgpu::FeatureName::TransientAttachments };
+
+    wgpu::SupportedFeatures supportedFeatures;
+    adapter.GetFeatures(&supportedFeatures);
+
+    std::vector<wgpu::FeatureName> enabledFeatures;
+    enabledFeatures.reserve(requiredFeatures.size() + optionalFeatures.size());
+
+    std::set_intersection(supportedFeatures.features,
+            supportedFeatures.features + supportedFeatures.featureCount, requiredFeatures.begin(),
+            requiredFeatures.end(), std::back_inserter(enabledFeatures));
+
+    if (enabledFeatures.size() != requiredFeatures.size()) {
+        std::vector<wgpu::FeatureName> missingFeatures;
+        std::set_difference(requiredFeatures.begin(), requiredFeatures.end(),
+                supportedFeatures.features,
+                supportedFeatures.features + supportedFeatures.featureCount,
+                std::back_inserter(missingFeatures));
+
+        std::stringstream missingFeaturesStream{};
+        for (const auto& entry: missingFeatures) {
+            missingFeaturesStream << std::to_string(static_cast<uint32_t>(entry)) << " ";
+        }
+        PANIC_POSTCONDITION("Some required features are not available %s/n",
+                missingFeaturesStream.str().c_str());
+    }
+
+    std::set_intersection(supportedFeatures.features,
+            supportedFeatures.features + supportedFeatures.featureCount, optionalFeatures.begin(),
+            optionalFeatures.end(), std::back_inserter(enabledFeatures));
+
     wgpu::DeviceDescriptor deviceDescriptor{};
     deviceDescriptor.label = "graphics_device";
     deviceDescriptor.defaultQueue.label = "default_queue";
+    deviceDescriptor.requiredFeatureCount = enabledFeatures.size();
+    deviceDescriptor.requiredFeatures = enabledFeatures.data();
     deviceDescriptor.SetDeviceLostCallback(wgpu::CallbackMode::AllowSpontaneous,
             [](wgpu::Device const&, wgpu::DeviceLostReason const& reason,
                     wgpu::StringView message) {

filament/backend/test/ImageExpectations.cpp

@@ -33,9 +33,10 @@
 #endif
 
 ScreenshotParams::ScreenshotParams(int width, int height, std::string fileName,
-        uint32_t expectedHash)
+        uint32_t expectedHash, bool isSrgb)
     : mWidth(width),
       mHeight(height),
+      mIsSrgb(isSrgb),
       mExpectedPixelHash(expectedHash),
       mFileName(std::move(fileName)) {}
 
@@ -47,6 +48,10 @@ int ScreenshotParams::height() const {
     return mHeight;
 }
 
+bool ScreenshotParams::isSrgb() const {
+    return mIsSrgb;
+}
+
 uint32_t ScreenshotParams::expectedHash() const {
     return mExpectedPixelHash;
 }
@@ -147,13 +152,25 @@ RenderTargetDump::RenderTargetDump(filament::backend::DriverApi& api,
         auto* internal = static_cast<RenderTargetDump::Internal*>(user);
         internal->bytesFilled = true;
 #ifndef FILAMENT_IOS
-        image::LinearImage image(internal->params.width(), internal->params.width(), 4);
-        image = image::toLinearWithAlpha<uint8_t>(internal->params.width(),
-                internal->params.height(),
-                internal->params.width() * 4, (uint8_t*)buffer);
+        image::LinearImage image;
+        if (internal->params.isSrgb()) {
+            image = image::toLinearWithAlpha<uint8_t>(internal->params.width(),
+                    internal->params.height(),
+                    internal->params.width() * 4, (uint8_t*)buffer);
+        } else {
+            // The image data is already linear, so pass in transforms that simply go from uint8_t
+            // to float. toLinearWithAlpha divides the float values by uint8_t max so there's no
+            // need to scale it to [0, 1]
+            image = image::toLinearWithAlpha<uint8_t>(
+                    internal->params.width(), internal->params.height(),
+                    internal->params.width() * 4, (uint8_t*) buffer,
+                    [](uint8_t value) -> float { return value; },
+                    [](filament::math::float4 rgba) -> filament::math::float4 { return rgba; });
+        }
         std::string filePath = internal->params.actualFilePath();
         std::ofstream pngStream(filePath, std::ios::binary | std::ios::trunc);
-        image::ImageEncoder::encode(pngStream, image::ImageEncoder::Format::PNG, image, "",
+        // To avoid going from linear -> sRGB -> linear save the PNG as linear.
+        image::ImageEncoder::encode(pngStream, image::ImageEncoder::Format::PNG_LINEAR, image, "",
                 filePath);
 #endif
     };
@@ -175,8 +192,12 @@ RenderTargetDump::~RenderTargetDump() {
     }
 }
 
+uint32_t RenderTargetDump::Internal::hash() const {
+    return utils::hash::murmur3((uint32_t*)bytes.data(), bytes.size() / 4, 0);
+}
+
 uint32_t RenderTargetDump::hash() const {
-    return utils::hash::murmur3((uint32_t*)mInternal->bytes.data(), mInternal->bytes.size() / 4, 0);
+    return mInternal->hash();
 }
 
 bool RenderTargetDump::bytesFilled() const {
@@ -204,9 +225,15 @@ LoadedPng::LoadedPng(std::string filePath) : mFilePath(std::move(filePath)) {
 
 uint32_t LoadedPng::hash() const {
     EXPECT_THAT(mBytes, testing::Not(testing::IsEmpty()))
-            << "Failed to load expected test result: " << mFilePath;
+            << "Failed to load expected test result: " << mFilePath << ".\n"
+            << "Did you forget to sync CMake after updating the expected image in the source "
+               "directory?";
     if (mBytes.empty()) {
         return 0;
     }
     return utils::hash::murmur3((uint32_t*)mBytes.data(), mBytes.size() / 4, 0);
 }
+
+const std::vector<unsigned char>& LoadedPng::bytes() const {
+    return mBytes;
+}

filament/backend/test/ImageExpectations.h

@@ -40,10 +40,12 @@ do {                                                                \
  */
 class ScreenshotParams {
 public:
-    ScreenshotParams(int width, int height, std::string fileName, uint32_t expectedPixelHash);
+    ScreenshotParams(int width, int height, std::string fileName, uint32_t expectedPixelHash,
+            bool isSrgb = false);
 
     int width() const;
     int height() const;
+    bool isSrgb() const;
     uint32_t expectedHash() const;
 
     static std::string actualDirectoryPath();
@@ -56,6 +58,7 @@ public:
 private:
     int mWidth;
     int mHeight;
+    bool mIsSrgb;
     uint32_t mExpectedPixelHash;
     std::string mFileName;
 };
@@ -92,6 +95,8 @@ private:
         ScreenshotParams params;
         std::atomic<bool> bytesFilled = false;
         std::vector<unsigned char> bytes;
+
+        uint32_t hash() const;
     };
 
     // We need a memory location that won't be invalidated to pass to GPU callbacks as they can't
@@ -105,6 +110,8 @@ public:
 
     uint32_t hash() const;
 
+    const std::vector<unsigned char>& bytes() const;
+
 private:
     std::string mFilePath;
     std::vector<unsigned char> mBytes;

filament/backend/test/Lifetimes.h

@@ -21,6 +21,9 @@
 #include <functional>
 #include <optional>
 
+#include "gtest/gtest.h"
+#include "gmock/gmock.h"
+
 #include "backend/Handle.h"
 #include "backend/DriverApiForward.h"
 #include "BackendTest.h"
@@ -71,6 +74,7 @@ private:
 
 template <typename HandleType>
 filament::backend::Handle<HandleType> Cleanup::add(filament::backend::Handle<HandleType> handle) {
+    EXPECT_THAT(handle, ::testing::IsTrue()) << "Added a null handle to clean up.";
     addInternal(handle);
     return handle;
 }

filament/backend/test/Shader.cpp

@@ -34,7 +34,7 @@ Shader::Shader(DriverApi& api, Cleanup& cleanup, ShaderConfig config) : mCleanup
     // This assumes that the uniforms will all be in a single descriptor set at index 1.
     // If there are shaders with uniforms in other sets then ShaderConfig will need to be expanded
     // to accommodate that.
-    size_t kDescriptorSetIndex = 1;
+    size_t kDescriptorSetIndex = 0;
     filamat::DescriptorSets descriptors;
     descriptors[kDescriptorSetIndex] = filamat::DescriptorSetInfo(config.uniforms.size());
     for (unsigned char i = 0; i < config.uniforms.size(); ++i) {
@@ -52,11 +52,13 @@ Shader::Shader(DriverApi& api, Cleanup& cleanup, ShaderConfig config) : mCleanup
                 config.uniforms[i].name,
                 config.uniforms[i].type.value_or(DescriptorType::UNIFORM_BUFFER), i };
     }
-    prog.descriptorBindings(1, bindingsInfo);
+    prog.descriptorBindings(0, bindingsInfo);
     mProgram = cleanup.add(api.createProgram(std::move(prog)));
 
-    mDescriptorSetLayout = cleanup.add(
-            api.createDescriptorSetLayout(DescriptorSetLayout{ kLayouts }));
+    if (!kLayouts.empty()) {
+        mDescriptorSetLayout =
+                cleanup.add(api.createDescriptorSetLayout(DescriptorSetLayout{ kLayouts }));
+    }
 }
 
 filament::backend::DescriptorSetHandle Shader::createDescriptorSet(DriverApi& api) const {
@@ -64,10 +66,15 @@ filament::backend::DescriptorSetHandle Shader::createDescriptorSet(DriverApi& ap
 }
 
 filament::backend::ProgramHandle Shader::getProgram() const {
+    assert(mProgram);
+    EXPECT_THAT(mProgram, ::testing::IsTrue())
+                        << "Shader program accessed despite being null.";
     return mProgram;
 }
 
 filament::backend::DescriptorSetLayoutHandle Shader::getDescriptorSetLayout() const {
+    EXPECT_THAT(mDescriptorSetLayout, ::testing::IsTrue())
+            << "Shader descriptor set layout accessed despite being null.";
     return mDescriptorSetLayout;
 }
 

filament/backend/test/Shader.h

@@ -96,6 +96,7 @@ public:
 protected:
     Cleanup& mCleanup;
     filament::backend::ProgramHandle mProgram;
+    // This will be a null handle if there are no uniforms.
     filament::backend::DescriptorSetLayoutHandle mDescriptorSetLayout;
 };
 
@@ -106,7 +107,7 @@ ResolvedUniformBindingConfig UniformBindingConfig::resolve() {
             .dataSize = resolvedDataSize,
             .bufferSize = bufferSize.value_or(resolvedDataSize),
             .byteOffset = byteOffset.value_or(0),
-            .set = set.value_or(1),
+            .set = set.value_or(0),
             .binding = binding.value_or(0),
             .descriptorSet = descriptorSet
     };

filament/backend/test/SharedShaders.cpp

@@ -138,7 +138,7 @@ std::optional<std::string> GetGlslUniform(ShaderUniformType type) {
         }
         case ShaderUniformType::Simple: {
             return R"(
-layout(binding = 0, set = 1) uniform Params {
+layout(binding = 0, set = 0) uniform Params {
     highp vec4 color;
     // Use scaleMinusOne instead of scale so that a 0 initialized value is a good default
     highp vec4 scaleMinusOne;
@@ -148,7 +148,7 @@ layout(binding = 0, set = 1) uniform Params {
         }
         case ShaderUniformType::SimpleWithPadding: {
             return R"(
-layout(binding = 0, set = 1) uniform Params {
+layout(binding = 0, set = 0) uniform Params {
     highp vec4 padding[4];  // offset of 64 bytes
 
     highp vec4 color;
@@ -160,7 +160,7 @@ layout(binding = 0, set = 1) uniform Params {
         }
         case ShaderUniformType::Sampler: {
             return R"(
-layout(location = 0, set = 1) uniform sampler2D test_tex;
+layout(location = 0, set = 0) uniform sampler2D test_tex;
 )";
         }
         default:

filament/backend/test/Skip.h

@@ -20,13 +20,27 @@
 #include <gtest/gtest.h>
 #include "BackendTest.h"
 
-// skipEnvironment must be a test::SkipEnvironment
-#define SKIP_IF(skipEnvironment)                                                                   \
-do {                                                                                               \
-    SkipEnvironment skip(skipEnvironment);                                                         \
-    if (skip.matches()) {                                                                          \
-        GTEST_SKIP() << "Skipping test as the " << skip.describe();                                \
-    }                                                                                              \
+// skipEnvironment must be a test::SkipEnvironment or something that can be passed to the type's
+// constructor
+// rationale must be a string
+#define SKIP_IF(skipEnvironment, rationale)                                                    \
+do {                                                                                           \
+    SkipEnvironment skip(skipEnvironment);                                                     \
+    if (skip.matches()) {                                                                      \
+        GTEST_SKIP() << "Skipping test as the " << skip.describe() << "\n"                     \
+                     << " This test can't run there because " << rationale;                    \
+    }                                                                                          \
+} while (false)
+
+#define FAIL_IF(skipEnvironment, rationale)                                                    \
+do {                                                                                           \
+    SkipEnvironment skip(skipEnvironment);                                                     \
+    if (skip.matches()) {                                                                      \
+        GTEST_FAIL()                                                                           \
+                << "Failing test as the " << skip.describe() << "\n"                           \
+                << " This test should be able to succeed but it needs to fail early because"   \
+                << rationale;                                                                  \
+    }                                                                                          \
 } while (false)
 
 namespace test {

filament/backend/test/move_actual_images_to_expected.py

@@ -0,0 +1,62 @@
+import os, shutil, argparse, typing
+
+def match_sufffix(file_name: str, suffix: str, accepted_prefixes: typing.List[str]) -> str:
+  """
+  Check if the file name is one of the searched for ones with the given suffix and if so return it.
+  :param accepted_prefixes: If None accepts any prefix
+  :return: file_name with the suffix removed or "" if it doesn't match. This does mean a string that
+  is just the suffix is considered to not match as it will return the empty string.
+  """
+  if file_name.endswith(suffix):
+    prefix = file_name.removesuffix(suffix)
+    if accepted_prefixes is None or prefix in accepted_prefixes:
+      return prefix
+  return ""
+
+
+def replace_file_names(path: str, removed: str, replacement: str = "", output_path: str = "",
+                       prefixes: typing.List[str] = None):
+  if not output_path:
+    output_path = path
+  for file_name in os.listdir(path=path):
+    prefix = match_sufffix(file_name, removed, prefixes)
+    if prefix:
+      # Remove the prefix from the list so that prefixes is the list of intended but not yet found
+      # files.
+      if prefixes is not None:
+        prefixes.remove(prefix)
+      new_file_name = prefix + replacement
+      new_file_path = os.path.join(output_path, new_file_name)
+      old_file_path = os.path.join(path, file_name)
+      print(f'{old_file_path} to {new_file_path}')
+      shutil.move(old_file_path, new_file_path)
+  if prefixes is not None:
+    for unfound_prefix in prefixes:
+      print(f'Failed to find {unfound_prefix}_actual.png')
+
+if __name__ == "__main__":
+  parser = argparse.ArgumentParser(prog='Backend Test File Renamer',
+                                   description='Moves actual generated test images to the expected '
+                                               'images directory, to update the test requirements. '
+                                               'test_cases accepts multiple arguments that should '
+                                               'be the name of the expected image file without the '
+                                               '.png suffix. Also --all can be passed to copy all '
+                                               'images.\n'
+                                               'Remember to sync CMake after running this to move '
+                                               'the new expected images to the binary directory.')
+  parser.add_argument('-i', '--input_path')
+  parser.add_argument('-o', '--output_path', default="./expected_images")
+  parser.add_argument('-t', '--test_cases', action='extend', nargs='*')
+  parser.add_argument('-a', '--all', action='store_true')
+
+  args = parser.parse_args()
+  input_path = "."
+  if args.input_path:
+    input_path = args.input_path
+
+  prefixes = args.test_cases
+  if args.all:
+    prefixes = None
+
+  replace_file_names(path=input_path, output_path=args.output_path, removed="_actual.png",
+                     replacement=".png", prefixes=prefixes)

filament/backend/test/test_Blit.cpp

@@ -20,6 +20,7 @@
 #include "Lifetimes.h"
 #include "Shader.h"
 #include "SharedShaders.h"
+#include "Skip.h"
 #include "TrianglePrimitive.h"
 
 #include <utils/Hash.h>
@@ -309,7 +310,7 @@ TEST_F(BlitTest, ColorResolve) {
 
     PipelineState state = {};
     state.program = shader.getProgram();
-    state.pipelineLayout.setLayout[1] = { shader.getDescriptorSetLayout() };
+    state.pipelineLayout.setLayout[0] = { shader.getDescriptorSetLayout() };
     state.rasterState.colorWrite = true;
     state.rasterState.depthWrite = false;
     state.rasterState.depthFunc = RasterState::DepthFunc::A;
@@ -489,6 +490,7 @@ TEST_F(BlitTest, BlitRegion) {
 }
 
 TEST_F(BlitTest, BlitRegionToSwapChain) {
+    FAIL_IF(Backend::VULKAN, "Crashes due to not finding color attachment");
     auto& api = getDriverApi();
     mCleanup.addPostCall([&]() { executeCommands(); });