Fix a compile error

FMaterial accesses a private static method of the MaterialDefinition
class, which incurs a compile error for certain compilers.

.clang-format

@@ -65,6 +65,4 @@ SpacesInParentheses: false
 SpacesInSquareBrackets: false
 TabWidth: 4
 UseTab: Never
-PackConstructorInitializers: Never
-ConstructorInitializerIndentWidth: 8
-IndentWrappedFunctionNames: true
+PackConstructorInitializers: Never

.github/actions/get-commit-msg/action.yml

@@ -1,53 +1,43 @@
-# This action retrieves the latest commit message from a push or pull_request event
-# and makes it available as an output variable named 'msg'.
 name: 'Get commit message'
 outputs:
   msg:
     value: ${{ steps.action_output.outputs.msg }}
-  hash:
-    value: ${{ steps.action_output.outputs.hash }}
 runs:
   using: "composite"
   steps:
     - name: Find commit message (on push)
       if: github.event_name == 'push'
       shell: bash
-      env:
-        COMMIT_MESSAGE: ${{ github.event.head_commit.message }}
       run: |
         AUTHOR_NAME="${{ github.event.head_commit.author.name }}"
         AUTHOR_EMAIL="${{ github.event.head_commit.author.email }}"
         TSTAMP="${{ github.event.head_commit.timestamp }}"
-        HASH="${{ github.event.head_commit.id }}"
-        echo "commit $HASH" >> /tmp/commit_msg.txt
+        echo "commit ${{ github.event.head_commit.id }}" >> /tmp/commit_msg.txt
         echo "Author: ${AUTHOR_NAME}<${AUTHOR_EMAIL}>" >> /tmp/commit_msg.txt
         echo "Date: ${TSTAMP}" >> /tmp/commit_msg.txt
         echo "" >> /tmp/commit_msg.txt
-        echo "$COMMIT_MESSAGE" >> /tmp/commit_msg.txt
-        echo "$HASH" > /tmp/commit_hash.txt
+        echo "${{ github.event.head_commit.message }}" >> /tmp/commit_msg.txt
     - name: Find commit message (PR)
       shell: bash
       id: checkout_code
       if: github.event_name == 'pull_request'
       run: |
-        BEFORE_HASH=$(git rev-parse HEAD)
-        echo "hash=$BEFORE_HASH" >> "$GITHUB_OUTPUT"
-        # Next we will checkout the actual head (not the merge commits) of the PR
-        AFTER_HASH="${{ github.event.pull_request.head.sha }}"
-        git checkout $AFTER_HASH
-        COMMIT_MESSAGE=$(git log -1 --no-merges)
-        echo "$COMMIT_MESSAGE" > /tmp/commit_msg.txt
-        echo "$AFTER_HASH" > /tmp/commit_hash.txt
+        echo "+++++ head commit message +++++"
+        echo "$(git log -1 --no-merges)"
+        echo "+++++++++++++++++++++++++++++++"
+        echo "hash=$(git rev-parse HEAD)" >> "$GITHUB_OUTPUT"
+        git checkout ${{ github.event.pull_request.head.sha }}
+        echo "$(git log -1 --no-merges)" >> /tmp/commit_msg.txt
     - shell: bash
       id: action_output
       run: |
-        # Get the commit message
         DELIMITER="EOF_FILE_CONTENT_$(date +%s)" # Using timestamp to make it more unique
         echo "msg<<$DELIMITER" >> "$GITHUB_OUTPUT"
         cat /tmp/commit_msg.txt >> "$GITHUB_OUTPUT"
         echo "$DELIMITER" >> "$GITHUB_OUTPUT"
-        # Get the commit hash
-        echo "hash=$(cat /tmp/commit_hash.txt)" >> "$GITHUB_OUTPUT"
+        echo "----- got commit message ---"
+        cat /tmp/commit_msg.txt
+        echo "----------------------------"
     - name: Cleanup Find commit message (PR)
       shell: bash
       if: github.event_name == 'pull_request'

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

@@ -15,7 +15,7 @@ runs:
       uses: actions/cache@v4 # Use a specific version
       with:
         path: ~/Library/Caches/Homebrew
-        key: ${{ runner.os }}-brew-20251211
+        key: ${{ runner.os }}-brew-20250424
     - name: Install Mac Prerequisites
       shell: bash
       run: |

.github/workflows/android-continuous.yml

@@ -0,0 +1,25 @@
+name: Android
+
+on:
+  push:
+    branches:
+      - main
+      - release
+      - rc/**
+
+jobs:
+  build-android:
+    name: build-android
+    # We intentially use a larger runner here to enable larger disk space
+    # (standard linux runner will fail on disk space and faster build time).
+    runs-on: 'ubuntu-24.04-16core'
+
+    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:
+          build-abi: armeabi-v7a,arm64-v8a,x86_64

.github/workflows/ios-continuous.yml

@@ -0,0 +1,29 @@
+name: iOS
+
+on:
+  push:
+    branches:
+      - main
+      - release
+      - rc/**
+
+jobs:
+  build-ios:
+    name: build-ios
+    runs-on: macos-14-xlarge
+
+    steps:
+      - uses: actions/checkout@v4.1.6
+        with:
+          fetch-depth: 0
+      - uses: ./.github/actions/mac-prereq
+      - name: Run build script
+        run: |
+          cd build/ios && printf "y" | ./build.sh continuous
+      - uses: actions/upload-artifact@v4
+        with:
+          name: filament-ios
+          path: out/filament-release-ios.tgz
+      - name: Build iOS samples
+        run: |
+          cd build/ios && ./build-samples.sh continuous

.github/workflows/linux-continuous.yml

@@ -0,0 +1,26 @@
+name: Linux
+
+on:
+  push:
+    branches:
+      - main
+      - release
+      - rc/**
+
+jobs:
+  build-linux:
+    name: build-linux
+    runs-on: 'ubuntu-24.04-16core'
+
+    steps:
+      - uses: actions/checkout@v4.1.6
+        with:
+          fetch-depth: 0
+      - uses: ./.github/actions/linux-prereq
+      - name: Run build script
+        run: |
+          cd build/linux && printf "y" | ./build.sh continuous
+      - uses: actions/upload-artifact@v4
+        with:
+          name: filament-linux
+          path: out/filament-release-linux.tgz

.github/workflows/mac-continuous.yml

@@ -0,0 +1,29 @@
+name: macOS
+
+on:
+  push:
+    branches:
+      - main
+      - release
+      - rc/**
+
+jobs:
+  build-mac:
+    name: build-mac
+    runs-on: macos-14-xlarge
+
+    steps:
+      - uses: actions/checkout@v4.1.6
+        with:
+          fetch-depth: 0
+      - uses: ./.github/actions/mac-prereq
+      - name: Run build script
+        run: |
+          cd build/mac && printf "y" | ./build.sh continuous
+      - uses: actions/upload-artifact@v4
+        with:
+          name: filament-mac
+          path: out/filament-release-darwin.tgz
+      - name: Check public headers
+        run: |
+          test/check-headers/test.sh out/release/filament/include

.github/workflows/postsubmit-main.yml

@@ -1,59 +0,0 @@
-name: 'Postsubmit Tasks'
-
-on:
-  push:
-    branches:
-      - main
-
-jobs:
-  update-renderdiff-goldens:
-    name: update-renderdiff-goldens
-    runs-on: 'ubuntu-24.04-4core'
-    steps:
-      - uses: actions/checkout@v4.1.6
-        with:
-          fetch-depth: 0
-      - uses: ./.github/actions/linux-prereq
-      - id: get_commit_msg
-        uses: ./.github/actions/get-commit-msg
-      - name: Prerequisites
-        run: pip install tifffile numpy
-      - name: Run update script
-        env:
-          GH_TOKEN: ${{ secrets.FILAMENTBOT_TOKEN }}
-          COMMIT_MESSAGE: ${{ steps.get_commit_msg.outputs.msg }}
-        run: |
-          GOLDEN_BRANCH=$(echo "${COMMIT_MESSAGE}" | python3 test/renderdiff/src/commit_msg.py)
-          COMMIT_HASH="${{ steps.get_commit_msg.outputs.hash }}"
-          if [[ "${GOLDEN_BRANCH}" != "main" ]]; then
-              git config --global user.email "filament.bot@gmail.com"
-              git config --global user.name "Filament Bot"
-              git config --global credential.helper cache
-              echo "branch==${GOLDEN_BRANCH}"
-              echo "hash==${COMMIT_HASH}"
-              python3 test/renderdiff/src/update_golden.py --branch=${GOLDEN_BRANCH} \
-                  --merge-to-main --filament-tag=${COMMIT_HASH} --golden-repo-token=${GH_TOKEN}
-          fi
-
-  update-docs:
-    name: update-docs
-    runs-on: 'ubuntu-24.04-4core'
-    steps:
-      - uses: actions/checkout@v4.1.6
-        with:
-          fetch-depth: 0
-      - uses: ./.github/actions/linux-prereq
-      - id: get_commit_msg
-        uses: ./.github/actions/get-commit-msg
-      - name: Prerequisites
-        run: pip install selenium
-      - name: Run update script
-        env:
-          GH_TOKEN: ${{ secrets.FILAMENTBOT_TOKEN }}
-        run: |
-          bash docs_src/build/install_mdbook.sh && source ~/.bashrc
-          COMMIT_HASH="${{ steps.get_commit_msg.outputs.hash }}"
-          git config --global user.email "filament.bot@gmail.com"
-          git config --global user.name "Filament Bot"
-          git config --global credential.helper cache
-          bash docs_src/build/postsubmit.sh ${COMMIT_HASH} ${GH_TOKEN}

.github/workflows/postsubmit.yml

@@ -1,115 +1,58 @@
-name: 'Postsubmit CI'
+name: 'Post-submit tasks'
 
 on:
   push:
     branches:
       - main
-      - release
-      - rc/**
 
 jobs:
-  build-android:
-    name: build-android
-    # We intentially use a larger runner here to enable larger disk space
-    # (standard linux runner will fail on disk space and faster build time).
-    runs-on: 'ubuntu-24.04-16core'
-
+  update-renderdiff-goldens:
+    name: update-renderdiff-goldens
+    runs-on: 'ubuntu-24.04-4core'
     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:
-          build-abi: armeabi-v7a,arm64-v8a,x86_64
-
-  build-ios:
-    name: build-ios
-    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
+      - id: get_commit_msg
+        uses: ./.github/actions/get-commit-msg
+      - name: Prerequisites
+        run: pip install tifffile numpy
+      - name: Run update script
+        env:
+          GH_TOKEN: ${{ secrets.FILAMENTBOT_TOKEN }}
         run: |
-          cd build/ios && printf "y" | ./build.sh continuous
-      - uses: actions/upload-artifact@v4
-        with:
-          name: filament-ios
-          path: out/filament-release-ios.tgz
-      - name: Build iOS samples
-        run: |
-          cd build/ios && ./build-samples.sh continuous
-
-  build-linux:
-    name: build-linux
-    runs-on: 'ubuntu-24.04-16core'
+          GOLDEN_BRANCH=$(echo "${{ steps.get_commit_msg.outputs.msg }}" | python3 test/renderdiff/src/commit_msg.py)
+          COMMIT_HASH=$(echo "${{ steps.get_commit_msg.outputs.msg }}" | head -n 1 | sed "s/commit //g")
+          if [[ "${GOLDEN_BRANCH}" != "main" ]]; then
+              git config --global user.email "filament.bot@gmail.com"
+              git config --global user.name "Filament Bot"
+              git config --global credential.helper cache
+              echo "branch==${GOLDEN_BRANCH}"
+              echo "hash==${COMMIT_HASH}"
+              python3 test/renderdiff/src/update_golden.py --branch=${GOLDEN_BRANCH} \
+                  --merge-to-main --filament-tag=${COMMIT_HASH} --golden-repo-token=${GH_TOKEN}
+          fi
 
+  update-docs:
+    name: update-docs
+    runs-on: 'ubuntu-24.04-4core'
     steps:
       - uses: actions/checkout@v4.1.6
         with:
           fetch-depth: 0
       - uses: ./.github/actions/linux-prereq
-      - name: Run build script
+      - id: get_commit_msg
+        uses: ./.github/actions/get-commit-msg
+      - name: Prerequisites
+        run: pip install selenium
+      - name: Run update script
+        env:
+          GH_TOKEN: ${{ secrets.FILAMENTBOT_TOKEN }}
         run: |
-          cd build/linux && printf "y" | ./build.sh continuous
-      - uses: actions/upload-artifact@v4
-        with:
-          name: filament-linux
-          path: out/filament-release-linux.tgz
-
-  build-mac:
-    name: build-mac
-    runs-on: macos-14-xlarge
-
-    steps:
-      - uses: actions/checkout@v4.1.6
-        with:
-          fetch-depth: 0
-      - uses: ./.github/actions/mac-prereq
-      - name: Run build script
-        run: |
-          cd build/mac && printf "y" | ./build.sh continuous
-      - uses: actions/upload-artifact@v4
-        with:
-          name: filament-mac
-          path: out/filament-release-darwin.tgz
-      - name: Check public headers
-        run: |
-          test/check-headers/test.sh out/release/filament/include
-
-  build-web:
-    name: build-web
-    runs-on: 'ubuntu-24.04-16core'
-
-    steps:
-      - uses: actions/checkout@v4.1.6
-        with:
-          fetch-depth: 0
-      - uses: ./.github/actions/linux-prereq
-      - uses: ./.github/actions/web-prereq
-      - name: Run build script
-        run: |
-          cd build/web && printf "y" | ./build.sh continuous
-      - uses: actions/upload-artifact@v4
-        with:
-          name: filament-web
-          path: out/filament-release-web.tgz
-
-  build-windows:
-    name: build-windows
-    runs-on: windows-2022-32core
-
-    steps:
-      - uses: actions/checkout@v4.1.6
-      - name: Run build script
-        run: |
-          build\windows\build-github.bat continuous
-        shell: cmd
-      - uses: actions/upload-artifact@v4
-        with:
-          name: filament-windows
-          path: out/filament-windows.tgz
+          bash docs_src/build/install_mdbook.sh && source ~/.bashrc
+          COMMIT_HASH=$(echo "${{ steps.get_commit_msg.outputs.msg }}" | head -n 1 | sed "s/commit //g")
+          git config --global user.email "filament.bot@gmail.com"
+          git config --global user.name "Filament Bot"
+          git config --global credential.helper cache
+          bash docs_src/build/postsubmit.sh ${COMMIT_HASH} ${GH_TOKEN}

.github/workflows/presubmit.yml

@@ -1,4 +1,4 @@
-name: 'Presubmit CI'
+name: Presubmit
 
 on:
   push:
@@ -19,7 +19,7 @@ jobs:
       - uses: ./.github/actions/mac-prereq
       - name: Run build script
         run: |
-          cd build/mac && printf "y" | ./build.sh presubmit-with-test
+          cd build/mac && printf "y" | ./build.sh presubmit
       - name: Test material parser
         run: |
           out/cmake-release/filament/test/test_material_parser
@@ -108,7 +108,8 @@ jobs:
         uses: ./.github/actions/get-commit-msg
       - name: Check for manual edits to /docs
         run: |
-          bash docs_src/build/presubmit_check.sh ${{ steps.get_commit_msg.outputs.hash }}
+          COMMIT_ID=$(echo "${{ steps.get_commit_msg.outputs.msg }}" | head -n 1 | sed "s/commit //g")
+          bash docs_src/build/presubmit_check.sh ${COMMIT_ID}
 
   test-renderdiff:
     name: test-renderdiff
@@ -120,7 +121,7 @@ jobs:
       - uses: ./.github/actions/mac-prereq
       - uses: ./.github/actions/get-gltf-assets
       - uses: ./.github/actions/get-mesa
-      - uses: ./.github/actions/get-vulkan-sdk
+      - uses: ./.github/actions/get-vulkan-sdk      
       - id: get_commit_msg
         uses: ./.github/actions/get-commit-msg
       - name: Prerequisites
@@ -131,20 +132,19 @@ jobs:
         shell: bash
       - name: Render and compare
         id: render_compare
-        env:
-          COMMIT_MESSAGE: ${{ steps.get_commit_msg.outputs.msg }}
         run: |
+          ls ./gltf/Models
           TEST_DIR=test/renderdiff
           source ${TEST_DIR}/src/preamble.sh
-          set -eux
-          GOLDEN_BRANCH=$(echo "${COMMIT_MESSAGE}" | python3 ${TEST_DIR}/src/commit_msg.py)
-          bash ${TEST_DIR}/generate.sh
-          python3 ${TEST_DIR}/src/golden_manager.py \
+          start_
+          GOLDEN_BRANCH=$(echo "${{ steps.get_commit_msg.outputs.msg }}" | python3 ${TEST_DIR}/src/commit_msg.py)
+          bash ${TEST_DIR}/generate.sh && \
+              python3 ${TEST_DIR}/src/golden_manager.py \
                   --branch=${GOLDEN_BRANCH} \
                   --output=${GOLDEN_OUTPUT_DIR}
 
-          # Note that we need to upload the output even if comparison fails, so we undo `set -eux`
-          set +eux
+          # Note that we need to upload the output even if comparison fails, so we undo `set -ex`
+          end_
 
           python3 ${TEST_DIR}/src/compare.py \
               --src=${GOLDEN_OUTPUT_DIR} \
@@ -157,7 +157,6 @@ jobs:
              cat compare_output.txt >> "$GITHUB_OUTPUT"
              echo "$DELIMITER" >> "$GITHUB_OUTPUT"
           fi
-        shell: bash
       - uses: actions/upload-artifact@v4
         with:
           name: presubmit-renderdiff-result
@@ -179,7 +178,7 @@ jobs:
           fetch-depth: 0
       - uses: ./.github/actions/linux-prereq
       - name: Run build script
-        run: ./build.sh -W debug test_filamat filament gltf_viewer
+        run: ./build.sh -W debug test_filamat filament
       - name: Run test
         run: ./out/cmake-debug/libs/filamat/test_filamat --gtest_filter=MaterialCompiler.Wgsl*
 
@@ -203,23 +202,3 @@ jobs:
           ./build.sh -p desktop debug gltf_viewer
       - name: Run test
         run: bash test/code-correctness/test.sh
-
-  test-backend:
-    name: test-backend
-    runs-on: macos-14-xlarge
-    steps:
-      - uses: actions/checkout@v4.1.6
-        with:
-          fetch-depth: 0
-      - uses: ./.github/actions/mac-prereq
-      - uses: ./.github/actions/get-mesa
-      - uses: ./.github/actions/get-vulkan-sdk
-      - name: Prerequisites
-        run: |
-          # Must have at least clang-16 for a webgpu/dawn build.
-          sudo xcode-select -s /Applications/Xcode_16.2.app/Contents/Developer
-        shell: bash
-      - name: Run backend tests
-        shell: bash
-        run: |
-          bash test/backend/test.sh

.github/workflows/release.yml

@@ -163,7 +163,9 @@ jobs:
           mv out/filamat-android-release.aar out/filamat-${TAG}-android.aar
           mv out/gltfio-android-release.aar out/gltfio-${TAG}-android.aar
           mv out/filament-utils-android-release.aar out/filament-utils-${TAG}-android.aar
-          mv out/filament-android-release-linux.tgz out/filament-${TAG}-android-native.tgz
+          cd out/android-release/filament
+          tar -czf ../../filament-${TAG}-android-native.tgz .
+          cd ../../..
       - name: Sign sample-gltf-viewer
         run: |
           echo "${APK_KEYSTORE_BASE64}" > filament.jks.base64
@@ -243,8 +245,7 @@ jobs:
         env:
           TAG: ${{ steps.git_ref.outputs.tag }}
         run: |
-          @REMARK 'call' is required to ensure control returns to this script after the batch file finishes.
-          call build\windows\build-github.bat release
+          build\windows\build-github.bat release
           echo on
           move out\filament-windows.tgz out\filament-%TAG%-windows.tgz
         shell: cmd

.github/workflows/web-continuous.yml

@@ -0,0 +1,27 @@
+name: Web
+
+on:
+  push:
+    branches:
+      - main
+      - release
+      - rc/**
+
+jobs:
+  build-web:
+    name: build-web
+    runs-on: 'ubuntu-24.04-16core'
+
+    steps:
+      - uses: actions/checkout@v4.1.6
+        with:
+          fetch-depth: 0
+      - uses: ./.github/actions/linux-prereq
+      - uses: ./.github/actions/web-prereq
+      - name: Run build script
+        run: |
+          cd build/web && printf "y" | ./build.sh continuous
+      - uses: actions/upload-artifact@v4
+        with:
+          name: filament-web
+          path: out/filament-release-web.tgz

.github/workflows/windows-continuous.yml

@@ -0,0 +1,24 @@
+name: Windows
+
+on:
+  push:
+    branches:
+      - main
+      - release
+      - rc/**
+
+jobs:
+  build-windows:
+    name: build-windows
+    runs-on: windows-2022-32core
+
+    steps:
+      - uses: actions/checkout@v4.1.6
+      - name: Run build script
+        run: |
+          build\windows\build-github.bat continuous
+        shell: cmd
+      - uses: actions/upload-artifact@v4
+        with:
+          name: filament-windows
+          path: out/filament-windows.tgz

BUILDING.md

@@ -1,6 +1,6 @@
-# Building Filament
+## Building Filament
 
-## Prerequisites
+### Prerequisites
 
 To build Filament, you must first install the following tools:
 
@@ -18,7 +18,7 @@ To build Filament for Android you must also install the following:
 - Android NDK 25.1 or higher
 - Java 17
 
-## Environment variables
+### Environment variables
 
 To build Filament for Android, make sure the environment variable `ANDROID_HOME` points to the
 location of your Android SDK.
@@ -30,7 +30,7 @@ When building for WebGL, you'll also need to set `EMSDK`. See [WebAssembly](#web
 We recommend using CLion to develop for Filament. Simply open the root directory's CMakeLists.txt
 in CLion to obtain a usable project.
 
-## Easy build
+### Easy build
 
 Once the required OS specific dependencies listed below are installed, you can use the script
 located in `build.sh` to build Filament easily on macOS and Linux.
@@ -62,12 +62,7 @@ force a clean build by adding the `-c` flag in that case.
 To install the libraries and executables in `out/debug/` and `out/release/`, add the `-i` flag.
 The script offers more features described by executing `build.sh -h`.
 
-For more specialized options, please also consider the following pages:
- - `-d`: [`matdbg`](https://google.github.io/filament/dup/matdbg.html)
- - `-t`: [`fgviewer`](https://google.github.io/filament/dup/fgviewer.html)
- - `-b` and `-y`: [ASAN/UBSAN builds](https://google.github.io/filament/notes/asan_ubsan.html)
-
-## Filament-specific CMake Options
+### Filament-specific CMake Options
 
 The following CMake options are boolean options specific to Filament:
 
@@ -89,7 +84,7 @@ cmake . -DOPTION=ON       # Replace OPTION with the option name, set to ON / OFF
 
 Options can also be set with the CMake GUI.
 
-## Linux
+### Linux
 
 Make sure you've installed the following dependencies:
 
@@ -148,7 +143,7 @@ ninja
 
 This will build Filament, its tests and samples, and various host tools.
 
-## macOS
+### macOS
 
 To compile Filament you must have the most recent version of Xcode installed and you need to
 make sure the command line tools are setup by running:
@@ -169,7 +164,7 @@ cmake -G Ninja -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=../release/fila
 ninja
 ```
 
-## iOS
+### iOS
 
 The easiest way to build Filament for iOS is to use `build.sh` and the
 `-p ios` flag. For instance to build the debug target:
@@ -180,9 +175,9 @@ The easiest way to build Filament for iOS is to use `build.sh` and the
 
 See [ios/samples/README.md](./ios/samples/README.md) for more information.
 
-## Windows
+### Windows
 
-### Building on Windows with Visual Studio 2019 or later
+#### Building on Windows with Visual Studio 2019 or later
 
 Install the following components:
 
@@ -225,7 +220,7 @@ You can also use CMake to invoke the build without opening Visual Studio. For ex
 cmake --build . --target gltf_viewer --config Release
 ```
 
-## Android
+### Android
 
 Before building Filament for Android, make sure to build Filament for your host. Some of the
 host tools are required to successfully build for Android.
@@ -242,13 +237,7 @@ foremost for `arm64-v8a`.
 
 To build Android on Windows machines, see [android/Windows.md](android/Windows.md).
 
-### Important: SDK location
-
-Either ensure your `ANDROID_HOME` environment variable is set or make sure the root project
-contains a `local.properties` file with the `sdk.dir` property pointing to your installation of
-the Android SDK.
-
-### Easy Android build
+#### Easy Android build
 
 The easiest way to build Filament for Android is to use `build.sh` and the
 `-p android` flag. For instance to build the release target:
@@ -257,46 +246,9 @@ The easiest way to build Filament for Android is to use `build.sh` and the
 ./build.sh -p android release
 ```
 
-To build a sample (such as `android/samples/sample-hello-triangle`) for an ARM 64-bit phone, you would run
-```shell
-./build.sh -p android -q arm64-v8a -k sample-hello-triangle release
-```
-
-The output APK can be found in `android/samples/sample-hello-triangle/build/outputs/apk/release/sample-hello-triangle-release-unsigned.apk`
-
 Run `build.sh -h` for more information.
 
-### Android Studio
-
-You must use the latest stable release of Android Studio.
-
-The Android build of filament is separated into java/kotlin client APIs, a layer of jni bindings
-that bridges java/kotlin with native code, and Filament and other component code that have been compiled
-into architecture-specific libraries. Our default Android Studio gradle setup can compile java/kotlin and
-the jni bindings for you, but it will treat the filament libraries as already compiled and present on
-the system.
-
-Therefore, before compiling the sample app or any other targets, you must
-make sure that the native filament libraries have been compiled and are located at a prescribed location
-so that the jni bindings can link against them. You can do so by using the easy build script
-
-```shell
-./build.sh -p android release -q arm64-v8a
-```
-
-Note that the above step will also install host machine tools into prescribed locations.  These tools are
-required for compiling Filament assets such as materials and environment maps.
-
-Now we are ready to compile the apps.  To open the project, point Studio to the `android` folder.
-After opening the project and syncing with Gradle, select the sample of your choice
-using the drop-down widget in the toolbar. Additionally, you will need to select a deployment target.
-By doing so, Android Studio will automatically try to compile the app only for that specific
-device's architecture. So if you are targeting a new Pixel phone, make sure that the step above
-(compiling the library) is targeting ARM 64-bit (`-q arm64-v8a` ), and if you are running the app on
-an emulator on a Linux machine with an x86 64-bit chipset, you would indicate (`-q x86_64`) in the above step.
-
-
-### Manual builds
+#### Manual builds
 
 Invoke CMake in a build directory of your choice, inside of filament's directory. The commands
 below show how to build Filament for ARM 64-bit (`aarch64`).
@@ -324,7 +276,7 @@ This will generate Filament's Android binaries in `out/android-release`. This lo
 to build the Android Studio projects located in `filament/android`. After install, the library
 binaries should be found in `out/android-release/filament/lib/arm64-v8a`.
 
-### AAR
+#### AAR
 
 Before you attempt to build the AAR, make sure you've compiled and installed the native libraries
 as explained in the sections above. You must have the following ABIs built in
@@ -356,7 +308,7 @@ Alternatively you can build the AAR from the command line by executing the follo
 The `-Pcom.google.android.filament.dist-dir` can be used to specify a different installation
 directory (it must match the CMake install prefix used in the previous steps).
 
-### Using Filament's AAR
+#### Using Filament's AAR
 
 Create a new module in your project and select _Import .JAR or .AAR Package_ when prompted. Make
 sure to add the newly created module as a dependency to your application.
@@ -397,7 +349,7 @@ productFlavors {
 }
 ```
 
-## WebAssembly
+### WebAssembly
 
 The core Filament library can be cross-compiled to WebAssembly from either macOS or Linux. To get
 started, follow the instructions for building Filament on your platform ([macOS](#macos) or
@@ -439,7 +391,7 @@ Alternatively, if you have node installed you can use the
 [live-server](https://www.npmjs.com/package/live-server) package, which automatically refreshes the
 web page when it detects a change.
 
-Each sample app has its own handwritten html file. Additionally, the server folder contains assets
+Each sample app has its own handwritten html file. Additionally the server folder contains assets
 such as meshes, textures, and materials.
 
 ## Running the native samples

CMakeLists.txt

@@ -10,7 +10,6 @@ cmake_minimum_required(VERSION 3.22.1)
 # ==================================================================================================
 # Toolchain configuration
 # ==================================================================================================
-# On iOS, the deployment target is set inside third_party/clang/ios.cmake
 if (APPLE AND NOT IOS)
     # This must be set before project() is called
     set(CMAKE_OSX_DEPLOYMENT_TARGET 10.15 CACHE STRING "")
@@ -49,16 +48,14 @@ option(FILAMENT_ENABLE_COVERAGE "Enable LLVM code coverage" OFF)
 
 option(FILAMENT_ENABLE_FEATURE_LEVEL_0 "Enable Feature Level 0" ON)
 
+option(FILAMENT_ENABLE_MULTIVIEW "Enable multiview for Filament" OFF)
+
 option(FILAMENT_SUPPORTS_OSMESA "Enable OSMesa (headless GL context) for Filament" OFF)
 
 option(FILAMENT_ENABLE_FGVIEWER "Enable the frame graph viewer" OFF)
 
 option(FILAMENT_USE_ABSEIL_LOGGING "Use Abseil to log, may increase binary size" OFF)
 
-option(FILAMENT_ENABLE_EXPERIMENTAL_GCC_SUPPORT "Enable GCC support (unsupported)" OFF)
-
-option(FILAMENT_SUPPORTS_WEBP_TEXTURES "Enable webp texture support for Filament (builds libwebp when ON)" OFF)
-
 # This is to disable GTAO for the short-term while we investigate a way to better manage size increases.
 # On the regular filament build (where size is of less concern), we enable GTAO by default.
 option(FILAMENT_DISABLE_GTAO "Disable GTAO" OFF)
@@ -298,10 +295,15 @@ set(TOOLS ${CMAKE_CURRENT_SOURCE_DIR}/tools)
 # ==================================================================================================
 set(MIN_CLANG_VERSION "6.0")
 
-set(FILAMENT_USING_GCC OFF)
-if (CMAKE_C_COMPILER_ID MATCHES "GNU" AND FILAMENT_ENABLE_EXPERIMENTAL_GCC_SUPPORT)
-    set(FILAMENT_USING_GCC ON)
-elseif (CMAKE_C_COMPILER_ID MATCHES "Clang")
+if (CMAKE_C_COMPILER_ID MATCHES "Clang")
+    if (CMAKE_C_COMPILER_VERSION VERSION_LESS MIN_CLANG_VERSION)
+        message(FATAL_ERROR "Detected C compiler Clang ${CMAKE_C_COMPILER_VERSION} < ${MIN_CLANG_VERSION}")
+    endif()
+elseif (NOT MSVC)
+    message(FATAL_ERROR "Detected C compiler ${CMAKE_C_COMPILER_ID} is unsupported")
+endif()
+
+if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
     if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS MIN_CLANG_VERSION)
         message(FATAL_ERROR "Detected CXX compiler Clang ${CMAKE_CXX_COMPILER_VERSION} < ${MIN_CLANG_VERSION}")
     endif()
@@ -342,18 +344,14 @@ if (MSVC)
     set(CXX_STANDARD "/std:c++latest")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CXX_STANDARD} /W0 /Zc:__cplusplus")
 else()
-    if(FILAMENT_USING_GCC)
-      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CXX_STANDARD} -Wno-changes-meaning -Wno-return-type -Wno-attributes -Wno-unknown-pragmas -Wno-class-memaccess -Wno-multichar -Wno-deprecated-declarations -Wno-subobject-linkage -Wno-invalid-constexpr")
-    else()
-      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CXX_STANDARD} -fstrict-aliasing -Wno-unknown-pragmas -Wno-unused-function -Wno-deprecated-declarations")
-    endif()
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CXX_STANDARD} -fstrict-aliasing -Wno-unknown-pragmas -Wno-unused-function -Wno-deprecated-declarations")
     if (APPLE)
         set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-nullability-extension")
     endif()
 endif()
 
 if (FILAMENT_USE_EXTERNAL_GLES3)
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DFILAMENT_USE_EXTERNAL_GLES3")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DUSE_EXTERNAL_GLES3")
 endif()
 
 if (FILAMENT_SUPPORTS_EGL_ON_LINUX)
@@ -366,23 +364,11 @@ endif()
 
 if (LINUX)
     option(USE_STATIC_LIBCXX "Link against the static runtime libraries." ON)
-
-    # Add this step to support both glibc-based Linux distributions (e.g., Ubuntu, Debian)
-    # and musl-based distributions (e.g., Alpine).
-    include(CheckSymbolExists)
-    check_symbol_exists(__GLIBC__ "features.h" CLANG_WITH_GLIBC)
-
     if (${USE_STATIC_LIBCXX})
-        if (FILAMENT_USING_GCC)
-            link_libraries("-static-libgcc -static-libstdc++")
-        elseif (CLANG_WITH_GLIBC)
-            set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
-            link_libraries("-static-libgcc -static-libstdc++")
-            link_libraries(libc++.a)
-            link_libraries(libc++abi.a)
-        else()
-            set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -static")
-        endif()
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
+        link_libraries("-static-libgcc -static-libstdc++")
+        link_libraries(libc++.a)
+        link_libraries(libc++abi.a)
     endif()
 
     # Only linux, clang doesn't want to use a shared library that is not PIC.
@@ -407,8 +393,8 @@ if (MSVC)
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_DEPRECATE")
 endif()
 
-# Add colors to ninja builds (when not using gcc)
-if (UNIX AND CMAKE_GENERATOR STREQUAL "Ninja" AND NOT FILAMENT_USING_GCC)
+# Add colors to ninja builds
+if (UNIX AND CMAKE_GENERATOR STREQUAL "Ninja")
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fcolor-diagnostics")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fcolor-diagnostics")
 endif()
@@ -480,7 +466,7 @@ endif()
 set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} ${EXTRA_SANITIZE_OPTIONS}")
 
 if (FILAMENT_ENABLE_COVERAGE)
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fprofile-instr-generate -fcoverage-mapping -Wno-pass-failed")
+    set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -fprofile-instr-generate -fcoverage-mapping")
 endif()
 
 # Disable the stack check for macOS to workaround a known issue in clang 11.0.0.
@@ -570,10 +556,6 @@ if (FILAMENT_SUPPORTS_WEBGPU)
     add_definitions(-DFILAMENT_SUPPORTS_WEBGPU)
 endif()
 
-if (FILAMENT_SUPPORTS_WEBP_TEXTURES)
-    add_definitions(-DFILAMENT_SUPPORTS_WEBP_TEXTURES)
-endif()
-
 # Build with Metal support on non-WebGL Apple platforms.
 if (APPLE AND NOT WEBGL)
     option(FILAMENT_SUPPORTS_METAL "Include the Metal backend" ON)
@@ -585,7 +567,7 @@ if (FILAMENT_SUPPORTS_METAL)
 endif()
 
 # Building filamat increases build times and isn't required for web, so turn it off by default.
-if (NOT WEBGL)
+if (NOT WEBGL AND NOT IOS)
     option(FILAMENT_BUILD_FILAMAT "Build filamat and JNI buildings" ON)
 else()
     option(FILAMENT_BUILD_FILAMAT "Build filamat and JNI buildings" OFF)
@@ -605,6 +587,23 @@ else()
     option(FILAMENT_DISABLE_MATOPT "Disable material optimizations" ON)
 endif()
 
+# This only affects the prebuilt shader files in gltfio and samples, not filament library.
+# The value can be either "instanced", "multiview", or "none"
+set(FILAMENT_SAMPLES_STEREO_TYPE "none" CACHE STRING
+    "Stereoscopic type that shader files in gltfio and samples are built for."
+)
+string(TOLOWER "${FILAMENT_SAMPLES_STEREO_TYPE}" FILAMENT_SAMPLES_STEREO_TYPE)
+if (NOT FILAMENT_SAMPLES_STEREO_TYPE STREQUAL "instanced"
+    AND NOT FILAMENT_SAMPLES_STEREO_TYPE STREQUAL "multiview"
+    AND NOT FILAMENT_SAMPLES_STEREO_TYPE STREQUAL "none")
+    message(FATAL_ERROR "Invalid stereo type: \"${FILAMENT_SAMPLES_STEREO_TYPE}\" choose either \"instanced\",  \"multiview\", or \"none\" ")
+endif ()
+
+# Compiling samples for multiview implies enabling multiview feature as well.
+if (FILAMENT_SAMPLES_STEREO_TYPE STREQUAL "multiview")
+    set(FILAMENT_ENABLE_MULTIVIEW ON)
+endif ()
+
 # Define backend flag for debug only
 if (CMAKE_BUILD_TYPE STREQUAL "Debug" AND NOT FILAMENT_BACKEND_DEBUG_FLAG STREQUAL "")
     add_definitions(-DFILAMENT_BACKEND_DEBUG_FLAG=${FILAMENT_BACKEND_DEBUG_FLAG})
@@ -749,61 +748,12 @@ function(combine_static_libs TARGET OUTPUT DEPS)
 endfunction()
 
 # ==================================================================================================
-# Configuration importing/exporting prebuilt "/tools" executables
+# Configuration for CMAKE_CROSSCOMPILING.
 # ==================================================================================================
-
-# In certain cases, we want the ability to separate the build type/flags (release, debug) of tools
-# (matc, resgen, etc...) from filament.  Cross compilation is one such case (e.g. building material
-# with matc running on host while building filament for Android) [1]. Another example is when client
-# wants to enable ASAN for filament but not the tool [2].
-#
-# Here are the varibles that are used to determine behavior is such flows:
-#   - CMAKE_CROSSCOMPILING : Set by cmake to indicate the build's target platform is different
-#     from the host platform.
-#   - IMPORT_EXECUTABLES_DIR : This is the directory containing the /ImportExecutables-type.cmake
-#     which are then included in other CMakeLists.txt to enable finding targets that have been
-#     prebuilt. This is set by the client in their `cmake` invocation.
-#   - IMPORT_EXECUTABLES : Path to a file to for 1) exporting the prebuilt targets or 2)
-#     importing a previously exported targets. (Used internally and should not be set by client).
-#   - FILAMENT_EXPORT_PREBUILT_EXECUTABLES_DIR : A path set by the client to indicate that
-#     they wish to export the tools as prebuilts, and the corresponding targets will be recorded
-#     in a cmake file (i.e IMPORT_EXECUTABLES). IMPORT_EXECUTABLES will be set relative to the the
-#     given path. This will set FILAMENT_EXPORT_PREBUILT_EXECUTABLES=ON.
-#   - FILAMENT_IMPORT_PREBUILT_EXECUTABLES_DIR : A path set by the client to indicate that they wish
-#     to import the tools as prebuilts from a .cmake file. The location (IMPORT_EXECUTABLES) of the
-#     file is relative to the path given. This will set FILAMENT_IMPORT_PREBUILT_EXECUTABLES=ON.
-#   - IMPORT_PREBUILT_EXECUTABLES and EXPORT_PREBUILT_EXECUTABLES are internal booleans set to
-#     ON based on the prescence of FILAMENT_IMPORT_PREBUILT_EXECUTABLES_DIR and
-#     FILAMENT_EXPORT_PREBUILT_EXECUTABLES_DIR.
-#
-# In conclusion, for cases
-#   - [1] (crosscompiling), the client must set IMPORT_EXECUTABLES_DIR for both when they are building
-#     the tools and when they are building the target-platform filament.
-#   - [2] (all other instances), the client must set FILAMENT_EXPORT_PREBUILT_EXECUTABLES_DIR in
-#     the prebuilt exporting step, and set FILAMENT_IMPORT_PREBUILT_EXECUTABLES_DIR in the importing
-#     step.
-
-# TODO: Fold the cross compilation case into the more general FILAMENT_IMPORT/EXPORT variables.
-
-if (FILAMENT_EXPORT_PREBUILT_EXECUTABLES_DIR)
-   set(FILAMENT_EXPORT_PREBUILT_EXECUTABLES ON)
-   set(IMPORT_EXECUTABLES_DIR ${FILAMENT_EXPORT_PREBUILT_EXECUTABLES_DIR})
-endif()
-
-if (FILAMENT_IMPORT_PREBUILT_EXECUTABLES_DIR)
-   set(FILAMENT_IMPORT_PREBUILT_EXECUTABLES ON)
-   set(IMPORT_EXECUTABLES_DIR ${FILAMENT_IMPORT_PREBUILT_EXECUTABLES_DIR})
-endif()
-
 if (WEBGL)
     set(IMPORT_EXECUTABLES ${FILAMENT}/${IMPORT_EXECUTABLES_DIR}/ImportExecutables-Release.cmake)
 else()
-    if (FILAMENT_EXPORT_PREBUILT_EXECUTABLES OR FILAMENT_IMPORT_PREBUILT_EXECUTABLES)
-        set(IMPORT_EXECUTABLES_BUILD_TYPE Prebuilt)
-    else()
-        set(IMPORT_EXECUTABLES_BUILD_TYPE ${CMAKE_BUILD_TYPE})
-    endif()
-    set(IMPORT_EXECUTABLES ${FILAMENT}/${IMPORT_EXECUTABLES_DIR}/ImportExecutables-${IMPORT_EXECUTABLES_BUILD_TYPE}.cmake)
+    set(IMPORT_EXECUTABLES ${FILAMENT}/${IMPORT_EXECUTABLES_DIR}/ImportExecutables-${CMAKE_BUILD_TYPE}.cmake)
 endif()
 
 # ==================================================================================================
@@ -858,7 +808,6 @@ add_subdirectory(${LIBRARIES}/gltfio)
 add_subdirectory(${LIBRARIES}/ibl)
 add_subdirectory(${LIBRARIES}/iblprefilter)
 add_subdirectory(${LIBRARIES}/image)
-add_subdirectory(${LIBRARIES}/imagediff)
 add_subdirectory(${LIBRARIES}/ktxreader)
 add_subdirectory(${LIBRARIES}/math)
 add_subdirectory(${LIBRARIES}/mathio)
@@ -867,9 +816,7 @@ add_subdirectory(${LIBRARIES}/utils)
 add_subdirectory(${LIBRARIES}/viewer)
 add_subdirectory(${FILAMENT}/shaders)
 add_subdirectory(${EXTERNAL}/abseil/tnt)
-# Add zstd before basisu to force it to use the external zstd target,
-# preventing a duplicate symbol conflict with its bundled version.
-add_subdirectory(${EXTERNAL}/zstd/tnt)
+add_subdirectory(${EXTERNAL}/basisu/tnt)
 add_subdirectory(${EXTERNAL}/civetweb/tnt)
 add_subdirectory(${EXTERNAL}/imgui/tnt)
 add_subdirectory(${EXTERNAL}/robin-map/tnt)
@@ -883,10 +830,7 @@ add_subdirectory(${EXTERNAL}/jsmn/tnt)
 add_subdirectory(${EXTERNAL}/stb/tnt)
 add_subdirectory(${EXTERNAL}/getopt)
 add_subdirectory(${EXTERNAL}/perfetto/tnt)
-add_subdirectory(${EXTERNAL}/basisu/tnt)
-
-# imageio-lite is needed for viewer
-add_subdirectory(${LIBRARIES}/imageio-lite)
+add_subdirectory(${EXTERNAL}/zstd/tnt)
 
 # Note that this has to be placed after mikktspace in order for combine_static_libs to work.
 add_subdirectory(${LIBRARIES}/geometry)
@@ -910,10 +854,6 @@ if (FILAMENT_ENABLE_FGVIEWER)
     add_subdirectory(${LIBRARIES}/fgviewer)
 endif()
 
-if (FILAMENT_SUPPORTS_WEBP_TEXTURES)
-    add_subdirectory(${EXTERNAL}/libwebp/tnt)
-endif()
-
 if (FILAMENT_SUPPORTS_VULKAN)
     add_subdirectory(${LIBRARIES}/bluevk)
     add_subdirectory(${EXTERNAL}/vkmemalloc/tnt)
@@ -969,10 +909,9 @@ if (IS_HOST_PLATFORM)
     add_subdirectory(${TOOLS}/roughness-prefilter)
     add_subdirectory(${TOOLS}/specular-color)
     add_subdirectory(${TOOLS}/uberz)
-    add_subdirectory(${TOOLS}/specgen)
 endif()
 
 # Generate exported executables for cross-compiled builds (Android, WebGL, and iOS)
-if ((NOT CMAKE_CROSSCOMPILING AND NOT FILAMENT_IMPORT_PREBUILT_EXECUTABLES) OR FILAMENT_EXPORT_PREBUILT_EXECUTABLES)
+if (NOT CMAKE_CROSSCOMPILING)
     export(TARGETS matc cmgen filamesh mipgen resgen uberz glslminifier FILE ${IMPORT_EXECUTABLES})
 endif()

CODE_STYLE.md

@@ -20,7 +20,7 @@ The guiding principles of the filament code style and code formatting can be res
 - class access modifiers are not indented
 - last line of `.cpp` or `.h` file must be an empty line
 
-```c++
+```
 for (int i = 0; i < max; i++) {
 }
 
@@ -73,24 +73,12 @@ src/data.inc
 - `public` class attributes *are not* prefixed
 - class attributes and methods are lower camelcase
 
-```c++
+```
 extern int gGlobalWarming;
 
 class FooBar {
 public:
-    FooBar(int attributeName, int sizeInBytes)
-            : mAttributeName(attributeName),
-              sizeInBytes(sizeInBytes) {}
-
-    void reallyLongMethodNameWithLotsOfArguments(bool argument1,
-            int someSecondArgument, int bestArgument) {
-        std::pair<bool, int> pair = {
-            argument1,
-            argument2,
-        };
-        // etc
-    }
-
+    void methodName();
     int sizeInBytes;
 private:
     int mAttributeName;
@@ -109,7 +97,7 @@ private:
 - always include the copyright notice at the top of every file
 - make sure the date is correct
 
-```c++
+```
 /*
  * Copyright (C) 2018 The Android Open Source Project
  *
@@ -151,7 +139,7 @@ conversely containers and algorithms are not allowed. There are exceptions such
 
 *Sorting the headers is important to help catching missing `#include` directives.*
 
-```c++
+```
 /*
  * Copyright (C) 2018 The Android Open Source Project
  *
@@ -195,7 +183,7 @@ conversely containers and algorithms are not allowed. There are exceptions such
 ### Misc
 
 - Use `auto` only when the type appears on the same line or with iterators and lambdas.
-```c++
+```
 auto foo = new Foo();
 for (auto& i : collection) { }
 ```

NEW_RELEASE_NOTES.md

@@ -1,6 +1,7 @@
 # Filament Release Notes log
 
 **If you are merging a PR into main**: please add the release note below, under the *Release notes
+We are chaning the way Vulkan buffers are handled. We need to switch over to a managed (or view-based) model where the data stored inside the object is a proxy to a Vulkan object that can dynamically be swapped around.
 
 **If you are cherry-picking a commit into an rc/ branch**: add the release note under the
 appropriate header in [RELEASE_NOTES.md](./RELEASE_NOTES.md).

README.md

@@ -31,7 +31,7 @@ repositories {
 }
 
 dependencies {
-    implementation 'com.google.android.filament:filament-android:1.69.2'
+    implementation 'com.google.android.filament:filament-android:1.65.2'
 }
 ```
 
@@ -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', '~> 1.69.2'
+pod 'Filament', '~> 1.65.2'
 ```
 
 ## Documentation

RELEASE_NOTES.md

@@ -7,72 +7,6 @@ A new header is inserted each time a *tag* is created.
 Instead, if you are authoring a PR for the main branch, add your release note to
 [NEW_RELEASE_NOTES.md](./NEW_RELEASE_NOTES.md).
 
-## v1.69.2
-
-- engine: fix shader compilation failure in TAA material
-- engine: fix stereo & parallel shader compilation
-
-## v1.69.1
-
-
-## v1.69.0
-
-- engine: Support custom attributes morphing, and allow for omitting position and/or normal data. [⚠️ **Recompile Materials**]
-
-## v1.68.5
-
-- engine: "native" Streams are officially deprecated. Use "acquired" streams instead.
-- engine: add "engine.skip_frame_when_cpu_ahead_of_display" feature [b/474599530]
-
-## v1.68.4
-
-- gltfio: Add optional support for webp textures (EXT_texture_webp), controlled via FILAMENT_SUPPORTS_WEBP_TEXTURES cmake option
-
-## v1.68.3
-
-- materials: added support for the glTF `KHR_materials_dispersion` extension, which adds dispersion for refractive objects
-
-## v1.68.2
-
-- Support `setPresentationTime` with the Metal backend.
-
-## v1.68.1
-
-
-## v1.68.0
-
-- engine: add `View::getLastDynamicResolutionScale()` (b/457753622)
-- Metal: report GPU errors to the platform via `debugUpdateStat` (b/431665753).
-- materials: Make Material Instances' UBO descriptor use dynamic offsets. [⚠️ **Recompile Materials**]
-
-## v1.67.1
-
-- Metal: Add support for the `SwapChain::CONFIG_MSAA_4_SAMPLES` flag.
-- third_party: Optionally add libwebp to build
-  - controlled by cmake flag FILAMENT_SUPPORTS_WEBP_TEXTURES, defaults to OFF
-  - actual webp texture support for libs/gltfio coming in subsequent change
-
-## v1.67.0
-
-- materials: Add a new API getParameterTransformName that will return the value of the transformName field of a sampler
-parameter. [⚠️ **Recompile Materials**]
-
-## v1.66.2
-
-
-## v1.66.1
-
-- filamat: Removed a dependency on Glslang's deprecated SPIR-V remapper.
-  The functionality is already implemented by calling the CanonicalizeIds pass
-  in the SPIRV-Tools, and should be a non-functional change.
-
-## v1.66.0
-
-- materials: include default values of spec constants in material metadata [⚠️ **Recompile Materials**]
-
-## v1.65.4
-
-
 ## v1.65.3
 
 

android/build.gradle

@@ -100,7 +100,7 @@ buildscript {
         'kotlin': '2.0.21',
         'kotlin_coroutines': '1.9.0',
         'buildTools': '35.0.0',
-        'ndk': '29.0.14206865',
+        'ndk': '27.0.11718014',
         'androidx_core': '1.13.1',
         'androidx_annotations': '1.9.0'
     ]
@@ -124,7 +124,6 @@ buildscript {
 
     ext.cmakeArgs = [
         "--no-warn-unused-cli",
-        "-DANDROID_WEAK_API_DEFS=ON",
         "-DANDROID_PIE=ON",
         "-DANDROID_PLATFORM=21",
         "-DANDROID_STL=c++_static",
@@ -194,7 +193,7 @@ subprojects {
         google()
     }
 
-    if (!name.startsWith("sample") && name != "filament-tools") {
+    if (!name.startsWith("sample")) {
         apply plugin: 'com.android.library'
 
         android {

android/filamat-android/src/main/cpp/MaterialBuilder.cpp

@@ -335,13 +335,6 @@ Java_com_google_android_filament_filamat_MaterialBuilder_nMaterialBuilderRefract
     builder->refractionMode((MaterialBuilder::RefractionMode) mode);
 }
 
-extern "C" JNIEXPORT void JNICALL
-Java_com_google_android_filament_filamat_MaterialBuilder_nMaterialBuilderReflectionMode(JNIEnv* env,
-        jclass, jlong nativeBuilder, jint mode) {
-    auto builder = (MaterialBuilder*) nativeBuilder;
-    builder->reflectionMode((MaterialBuilder::ReflectionMode) mode);
-}
-
 extern "C" JNIEXPORT void JNICALL
 Java_com_google_android_filament_filamat_MaterialBuilder_nMaterialBuilderRefractionType(JNIEnv* env,
         jclass, jlong nativeBuilder, jint type) {

android/filamat-android/src/main/java/com/google/android/filament/filamat/MaterialBuilder.java

@@ -177,11 +177,6 @@ public class MaterialBuilder {
         SCREEN_SPACE
     }
 
-    public enum ReflectionMode {
-        DEFAULT,
-        SCREEN_SPACE
-    }
-
     public enum RefractionType {
         SOLID,
         THIN
@@ -408,12 +403,6 @@ public class MaterialBuilder {
         return this;
     }
 
-    @NonNull
-    public MaterialBuilder reflectionMode(ReflectionMode mode) {
-        nMaterialBuilderReflectionMode(mNativeObject, mode.ordinal());
-        return this;
-    }
-
     @NonNull
     public MaterialBuilder refractionType(RefractionType type) {
         nMaterialBuilderRefractionType(mNativeObject, type.ordinal());
@@ -615,7 +604,6 @@ public class MaterialBuilder {
     private static native void nMaterialBuilderSpecularAntiAliasingThreshold(long mNativeObject,
             float threshold);
     private static native void nMaterialBuilderRefractionMode(long nativeBuilder, int mode);
-    private static native void nMaterialBuilderReflectionMode(long nativeBuilder, int mode);
     private static native void nMaterialBuilderRefractionType(long nativeBuilder, int type);
     private static native void nMaterialBuilderClearCoatIorChange(long mNativeObject,
             boolean clearCoatIorChange);

android/filament-android/CMakeLists.txt

@@ -51,6 +51,10 @@ add_library(bluevk STATIC IMPORTED)
 set_target_properties(bluevk PROPERTIES IMPORTED_LOCATION
         ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libbluevk.a)
 
+add_library(vkshaders STATIC IMPORTED)
+set_target_properties(vkshaders PROPERTIES IMPORTED_LOCATION
+        ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libvkshaders.a)
+
 if (FILAMENT_SUPPORTS_WEBGPU)
         add_library(webgpu_dawn STATIC IMPORTED)
         set_target_properties(webgpu_dawn PROPERTIES IMPORTED_LOCATION
@@ -134,7 +138,6 @@ target_include_directories(filament-jni PRIVATE
         ../../filament/backend/include
         ../../third_party/robin-map
         ../../third_party/perfetto
-        ../../libs/bluevk/include
         ../../libs/utils/include)
 
 # Ordering is significant in the following list. The PRIVATE qualifier prevents transitive deps.
@@ -162,15 +165,10 @@ target_link_libraries(filament-jni
     PRIVATE $<$<STREQUAL:${FILAMENT_ENABLE_MATDBG},ON>:matdbg>
     PRIVATE $<$<STREQUAL:${FILAMENT_ENABLE_MATDBG},ON>:filamat>
     PRIVATE $<$<STREQUAL:${FILAMENT_SUPPORTS_VULKAN},ON>:bluevk>
+    PRIVATE $<$<STREQUAL:${FILAMENT_SUPPORTS_VULKAN},ON>:vkshaders>
     PRIVATE $<$<STREQUAL:${FILAMENT_SUPPORTS_VULKAN},ON>:smol-v>
     PRIVATE $<$<STREQUAL:${FILAMENT_SUPPORTS_WEBGPU},ON>:webgpu_dawn>
 )
 
 # Force a relink when the version script is changed:
 set_target_properties(filament-jni PROPERTIES LINK_DEPENDS ${VERSION_SCRIPT})
-
-if (FILAMENT_SUPPORTS_VULKAN)
-    add_definitions(-DFILAMENT_SUPPORTS_VULKAN=1)
-else()
-    add_definitions(-DFILAMENT_SUPPORTS_VULKAN=0)
-endif()

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

@@ -18,7 +18,6 @@
 
 #include <filament/Camera.h>
 
-
 #include <utils/Entity.h>
 
 #include <math/mat4.h>
@@ -41,13 +40,6 @@ Java_com_google_android_filament_Camera_nSetProjectionFov(JNIEnv*, jclass ,
     camera->setProjection(fovInDegrees, aspect, near, far, (Camera::Fov) fov);
 }
 
-extern "C" JNIEXPORT jdouble JNICALL
-Java_com_google_android_filament_Camera_nGetFieldOfViewInDegrees(JNIEnv*, jclass,
-        jlong nativeCamera, jint direction) {
-    Camera *camera = (Camera *) nativeCamera;
-    return camera->getFieldOfViewInDegrees((Camera::Fov) direction);
-}
-
 extern "C" JNIEXPORT void JNICALL
 Java_com_google_android_filament_Camera_nSetLensProjection(JNIEnv*, jclass,
         jlong nativeCamera, jdouble focalLength, jdouble aspect, jdouble near, jdouble far) {
@@ -70,21 +62,6 @@ Java_com_google_android_filament_Camera_nSetCustomProjection(JNIEnv *env, jclass
     env->ReleaseDoubleArrayElements(inProjectionForCulling_, inProjectionForCulling, JNI_ABORT);
 }
 
-extern "C" JNIEXPORT void JNICALL
-Java_com_google_android_filament_Camera_nSetCustomEyeProjection(JNIEnv *env, jclass,
-        jlong nativeCamera, jdoubleArray inProjection_, jint count, jdoubleArray inProjectionForCulling_,
-        jdouble near, jdouble far) {
-    Camera *camera = (Camera *) nativeCamera;
-    jdouble *inProjection = env->GetDoubleArrayElements(inProjection_, NULL);
-    jdouble *inProjectionForCulling = env->GetDoubleArrayElements(inProjectionForCulling_, NULL);
-    camera->setCustomEyeProjection(
-            reinterpret_cast<const filament::math::mat4 *>(inProjection), (size_t) count,
-            *reinterpret_cast<const filament::math::mat4 *>(inProjectionForCulling),
-            near, far);
-    env->ReleaseDoubleArrayElements(inProjection_, inProjection, JNI_ABORT);
-    env->ReleaseDoubleArrayElements(inProjectionForCulling_, inProjectionForCulling, JNI_ABORT);
-}
-
 extern "C" JNIEXPORT void JNICALL
 Java_com_google_android_filament_Camera_nSetScaling(JNIEnv* env, jclass,
         jlong nativeCamera, jdouble x, jdouble y) {
@@ -99,17 +76,6 @@ Java_com_google_android_filament_Camera_nSetShift(JNIEnv* env, jclass,
     camera->setShift({(double)x, (double)y});
 }
 
-extern "C" JNIEXPORT void JNICALL
-Java_com_google_android_filament_Camera_nGetShift(JNIEnv* env, jclass,
-        jlong nativeCamera, jdoubleArray out_) {
-    Camera *camera = (Camera *) nativeCamera;
-    jdouble *out = env->GetDoubleArrayElements(out_, NULL);
-    filament::math::double2 s = camera->getShift();
-    out[0] = s.x;
-    out[1] = s.y;
-    env->ReleaseDoubleArrayElements(out_, out, 0);
-}
-
 extern "C" JNIEXPORT void JNICALL
 Java_com_google_android_filament_Camera_nLookAt(JNIEnv*, jclass, jlong nativeCamera,
         jdouble eye_x, jdouble eye_y, jdouble eye_z, jdouble center_x, jdouble center_y,
@@ -149,15 +115,6 @@ Java_com_google_android_filament_Camera_nSetModelMatrixFp64(JNIEnv *env, jclass,
     env->ReleaseDoubleArrayElements(in_, in, JNI_ABORT);
 }
 
-extern "C" JNIEXPORT void JNICALL
-Java_com_google_android_filament_Camera_nSetEyeModelMatrix(JNIEnv *env, jclass,
-        jlong nativeCamera, jint eyeId, jdoubleArray model_) {
-    Camera* camera = (Camera *) nativeCamera;
-    jdouble *model = env->GetDoubleArrayElements(model_, NULL);
-    camera->setEyeModelMatrix((uint8_t)eyeId, *reinterpret_cast<const filament::math::mat4*>(model));
-    env->ReleaseDoubleArrayElements(model_, model, JNI_ABORT);
-}
-
 extern "C" JNIEXPORT void JNICALL
 Java_com_google_android_filament_Camera_nGetProjectionMatrix(JNIEnv *env, jclass,
         jlong nativeCamera, jdoubleArray out_) {
@@ -323,5 +280,3 @@ Java_com_google_android_filament_Camera_nComputeEffectiveFov(JNIEnv*, jclass,
         jdouble fovInDegrees, jdouble focusDistance) {
     return Camera::computeEffectiveFov(fovInDegrees, focusDistance);
 }
-
-

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

@@ -18,7 +18,6 @@
 
 #include <filament/Camera.h>
 #include <filament/Engine.h>
-#include <filament/MorphTargetBuffer.h>
 
 #include <utils/Entity.h>
 #include <utils/EntityManager.h>
@@ -208,14 +207,6 @@ Java_com_google_android_filament_Engine_nDestroySkinningBuffer(JNIEnv*, jclass,
     return engine->destroy(skinningBuffer);
 }
 
-extern "C" JNIEXPORT jboolean JNICALL
-Java_com_google_android_filament_Engine_nDestroyMorphTargetBuffer(JNIEnv*, jclass,
-                jlong nativeEngine, jlong nativeMorphTargetBuffer) {
-    Engine* engine = (Engine*) nativeEngine;
-    MorphTargetBuffer* mtb = (MorphTargetBuffer*) nativeMorphTargetBuffer;
-    return engine->destroy(mtb);
-}
-
 extern "C" JNIEXPORT jboolean JNICALL
 Java_com_google_android_filament_Engine_nDestroyIndirectLight(JNIEnv*, jclass,
         jlong nativeEngine, jlong nativeIndirectLight) {
@@ -337,13 +328,6 @@ Java_com_google_android_filament_Engine_nIsValidSkinningBuffer(JNIEnv*, jclass,
     return (jboolean)engine->isValid((SkinningBuffer*)nativeSkinningBuffer);
 }
 
-extern "C" JNIEXPORT jboolean JNICALL
-Java_com_google_android_filament_Engine_nIsValidMorphTargetBuffer(JNIEnv*, jclass,
-                jlong nativeEngine, jlong nativeMorphTargetBuffer) {
-    Engine* engine = (Engine*) nativeEngine;
-    return (jboolean) engine->isValid((MorphTargetBuffer*) nativeMorphTargetBuffer);
-}
-
 extern "C" JNIEXPORT jboolean JNICALL
 Java_com_google_android_filament_Engine_nIsValidIndirectLight(JNIEnv*, jclass,
         jlong nativeEngine, jlong nativeIndirectLight) {
@@ -573,8 +557,7 @@ extern "C" JNIEXPORT void JNICALL Java_com_google_android_filament_Engine_nSetBu
         jboolean disableHandleUseAfterFreeCheck,
         jint preferredShaderLanguage,
         jboolean forceGLES2Context, jboolean assertNativeWindowIsValid,
-        jint gpuContextPriority,
-        jlong sharedUboInitialSizeInBytes) {
+        jint gpuContextPriority) {
     Engine::Builder* builder = (Engine::Builder*) nativeBuilder;
     Engine::Config config = {
             .commandBufferSizeMB = (uint32_t) commandBufferSizeMB,
@@ -593,7 +576,6 @@ extern "C" JNIEXPORT void JNICALL Java_com_google_android_filament_Engine_nSetBu
             .forceGLES2Context = (bool) forceGLES2Context,
             .assertNativeWindowIsValid = (bool) assertNativeWindowIsValid,
             .gpuContextPriority = (Engine::GpuContextPriority) gpuContextPriority,
-            .sharedUboInitialSizeInBytes = (uint32_t) sharedUboInitialSizeInBytes,
     };
     builder->config(&config);
 }

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

@@ -25,7 +25,7 @@ using namespace filament;
 
 extern "C" JNIEXPORT jlong JNICALL
 Java_com_google_android_filament_Material_nBuilderBuild(JNIEnv *env, jclass,
-        jlong nativeEngine, jobject buffer_, jint size, jint shBandCount, jint shadowQuality, jint uboBatchingMode) {
+        jlong nativeEngine, jobject buffer_, jint size, jint shBandCount, jint shadowQuality) {
     Engine* engine = (Engine*) nativeEngine;
     AutoBuffer buffer(env, buffer_, size);
     auto builder = Material::Builder();
@@ -33,7 +33,6 @@ Java_com_google_android_filament_Material_nBuilderBuild(JNIEnv *env, jclass,
         builder.sphericalHarmonicsBandCount(shBandCount);
     }
     builder.shadowSamplingQuality((Material::Builder::ShadowSamplingQuality)shadowQuality);
-    builder.uboBatching((Material::UboBatchingMode)uboBatchingMode);
     Material* material = builder
             .package(buffer.getData(), buffer.getSize())
             .build(*engine);
@@ -96,14 +95,6 @@ Java_com_google_android_filament_Material_nGetBlendingMode(JNIEnv*, jclass,
     return (jint) material->getBlendingMode();
 }
 
-extern "C"
-JNIEXPORT jint JNICALL
-Java_com_google_android_filament_Material_nGetTransparencyMode(JNIEnv*, jclass,
-        jlong nativeMaterial) {
-    Material* material = (Material*) nativeMaterial;
-    return (jint) material->getTransparencyMode();
-}
-
 
 extern "C"
 JNIEXPORT jint JNICALL
@@ -288,17 +279,6 @@ Java_com_google_android_filament_Material_nHasParameter(JNIEnv* env, jclass,
     return (jboolean) hasParameter;
 }
 
-extern "C" JNIEXPORT jstring JNICALL
-Java_com_google_android_filament_Material_nGetParameterTransformName(JNIEnv* env, jclass,
-        jlong nativeMaterial, jstring samplerName_) {
-    Material* material = (Material*) nativeMaterial;
-    const char* samplerName = env->GetStringUTFChars(samplerName_, 0);
-    const char* transformName = material->getParameterTransformName(samplerName);
-    jstring transformName_ = env->NewStringUTF(transformName ? transformName : "");
-    env->ReleaseStringUTFChars(samplerName_, samplerName);
-    return transformName_;
-}
-
 extern "C"
 JNIEXPORT void JNICALL
 Java_com_google_android_filament_Material_nCompile(JNIEnv *env, jclass clazz,

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

@@ -564,19 +564,3 @@ Java_com_google_android_filament_MaterialInstance_nGetDepthFunc(JNIEnv* env, jcl
     MaterialInstance* instance = (MaterialInstance*)nativeMaterialInstance;
     return (jint)instance->getDepthFunc();
 }
-
-extern "C"
-JNIEXPORT void JNICALL
-Java_com_google_android_filament_MaterialInstance_nSetTransparencyMode(JNIEnv*, jclass,
-        jlong nativeMaterialInstance, jint mode) {
-    MaterialInstance* instance = (MaterialInstance*) nativeMaterialInstance;
-    instance->setTransparencyMode((MaterialInstance::TransparencyMode) mode);
-}
-
-extern "C"
-JNIEXPORT jint JNICALL
-Java_com_google_android_filament_MaterialInstance_nGetTransparencyMode(JNIEnv*, jclass,
-        jlong nativeMaterialInstance) {
-    MaterialInstance* instance = (MaterialInstance*) nativeMaterialInstance;
-    return (jint) instance->getTransparencyMode();
-}

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

@@ -58,27 +58,6 @@ Java_com_google_android_filament_MorphTargetBuffer_nBuilderCount(JNIEnv*, jclass
     builder->count((size_t) count);
 }
 
-extern "C" JNIEXPORT void JNICALL
-        Java_com_google_android_filament_MorphTargetBuffer_nBuilderWithPositions(JNIEnv*, jclass,
-                jlong nativeBuilder, jboolean enabled) {
-    MorphTargetBuffer::Builder* builder = (MorphTargetBuffer::Builder*) nativeBuilder;
-    builder->withPositions(enabled);
-}
-
-extern "C" JNIEXPORT void JNICALL
-        Java_com_google_android_filament_MorphTargetBuffer_nBuilderWithTangents(JNIEnv*, jclass,
-                jlong nativeBuilder, jboolean enabled) {
-    MorphTargetBuffer::Builder* builder = (MorphTargetBuffer::Builder*) nativeBuilder;
-    builder->withTangents(enabled);
-}
-
-extern "C" JNIEXPORT void JNICALL
-        Java_com_google_android_filament_MorphTargetBuffer_nBuilderEnableCustomMorphing(JNIEnv*,
-                jclass, jlong nativeBuilder, jboolean enabled) {
-    MorphTargetBuffer::Builder* builder = (MorphTargetBuffer::Builder*) nativeBuilder;
-    builder->enableCustomMorphing(enabled);
-}
-
 extern "C"
 JNIEXPORT jlong JNICALL
 Java_com_google_android_filament_MorphTargetBuffer_nBuilderBuild(JNIEnv*, jclass,
@@ -133,24 +112,3 @@ Java_com_google_android_filament_MorphTargetBuffer_nGetCount(JNIEnv*, jclass,
     MorphTargetBuffer *morphTargetBuffer = (MorphTargetBuffer *) nativeObject;
     return (jint)morphTargetBuffer->getCount();
 }
-
-extern "C" JNIEXPORT jboolean JNICALL
-        Java_com_google_android_filament_MorphTargetBuffer_nHasPositions(JNIEnv*, jclass,
-                jlong nativeObject) {
-    MorphTargetBuffer* morphTargetBuffer = (MorphTargetBuffer*) nativeObject;
-    return (jboolean) morphTargetBuffer->hasPositions();
-}
-
-extern "C" JNIEXPORT jboolean JNICALL
-        Java_com_google_android_filament_MorphTargetBuffer_nHasTangents(JNIEnv*, jclass,
-                jlong nativeObject) {
-    MorphTargetBuffer* morphTargetBuffer = (MorphTargetBuffer*) nativeObject;
-    return (jboolean) morphTargetBuffer->hasTangents();
-}
-
-extern "C" JNIEXPORT jboolean JNICALL
-        Java_com_google_android_filament_MorphTargetBuffer_nIsCustomMorphingEnabled(JNIEnv*, jclass,
-                jlong nativeObject) {
-    MorphTargetBuffer* morphTargetBuffer = (MorphTargetBuffer*) nativeObject;
-    return (jboolean) morphTargetBuffer->isCustomMorphingEnabled();
-}

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

@@ -366,13 +366,6 @@ Java_com_google_android_filament_RenderableManager_nSetPriority(JNIEnv*, jclass,
     rm->setPriority((RenderableManager::Instance) i, (uint8_t) priority);
 }
 
-extern "C" JNIEXPORT jint JNICALL
-Java_com_google_android_filament_RenderableManager_nGetPriority(JNIEnv*, jclass,
-        jlong nativeRenderableManager, jint i) {
-    RenderableManager *rm = (RenderableManager *) nativeRenderableManager;
-    return (jint) rm->getPriority((RenderableManager::Instance) i);
-}
-
 extern "C" JNIEXPORT void JNICALL
 Java_com_google_android_filament_RenderableManager_nSetChannel(JNIEnv*, jclass,
         jlong nativeRenderableManager, jint i, jint channel) {
@@ -380,13 +373,6 @@ Java_com_google_android_filament_RenderableManager_nSetChannel(JNIEnv*, jclass,
     rm->setChannel((RenderableManager::Instance) i, (uint8_t) channel);
 }
 
-extern "C" JNIEXPORT jint JNICALL
-Java_com_google_android_filament_RenderableManager_nGetChannel(JNIEnv*, jclass,
-        jlong nativeRenderableManager, jint i) {
-    RenderableManager *rm = (RenderableManager *) nativeRenderableManager;
-    return (jint) rm->getChannel((RenderableManager::Instance) i);
-}
-
 extern "C" JNIEXPORT void JNICALL
 Java_com_google_android_filament_RenderableManager_nSetCulling(JNIEnv*, jclass,
         jlong nativeRenderableManager, jint i, jboolean enabled) {
@@ -394,13 +380,6 @@ Java_com_google_android_filament_RenderableManager_nSetCulling(JNIEnv*, jclass,
     rm->setCulling((RenderableManager::Instance) i, enabled);
 }
 
-extern "C" JNIEXPORT jboolean JNICALL
-Java_com_google_android_filament_RenderableManager_nIsCullingEnabled(JNIEnv*, jclass,
-        jlong nativeRenderableManager, jint i) {
-    RenderableManager *rm = (RenderableManager *) nativeRenderableManager;
-    return (jboolean) rm->isCullingEnabled((RenderableManager::Instance) i);
-}
-
 extern "C" JNIEXPORT void JNICALL
 Java_com_google_android_filament_RenderableManager_nSetFogEnabled(JNIEnv*, jclass,
         jlong nativeRenderableManager, jint i, jboolean enabled) {
@@ -450,13 +429,6 @@ Java_com_google_android_filament_RenderableManager_nIsShadowReceiver(JNIEnv*, jc
     return (jboolean) rm->isShadowReceiver((RenderableManager::Instance) i);
 }
 
-extern "C" JNIEXPORT jboolean JNICALL
-Java_com_google_android_filament_RenderableManager_nIsScreenSpaceContactShadowsEnabled(JNIEnv*, jclass,
-        jlong nativeRenderableManager, jint i) {
-    RenderableManager *rm = (RenderableManager *) nativeRenderableManager;
-    return (jboolean) rm->isScreenSpaceContactShadowsEnabled((RenderableManager::Instance) i);
-}
-
 extern "C" JNIEXPORT void JNICALL
 Java_com_google_android_filament_RenderableManager_nGetAxisAlignedBoundingBox(JNIEnv* env,
         jclass, jlong nativeRenderableManager, jint i, jfloatArray center_,
@@ -528,13 +500,6 @@ Java_com_google_android_filament_RenderableManager_nSetBlendOrderAt(JNIEnv*, jcl
             (uint16_t) blendOrder);
 }
 
-extern "C" JNIEXPORT jint JNICALL
-Java_com_google_android_filament_RenderableManager_nGetBlendOrderAt(JNIEnv*, jclass,
-        jlong nativeRenderableManager, jint i, jint primitiveIndex) {
-    RenderableManager *rm = (RenderableManager *) nativeRenderableManager;
-    return (jint) rm->getBlendOrderAt((RenderableManager::Instance) i, (size_t) primitiveIndex);
-}
-
 extern "C" JNIEXPORT void JNICALL
 Java_com_google_android_filament_RenderableManager_nSetGlobalBlendOrderEnabledAt(JNIEnv*, jclass,
         jlong nativeRenderableManager, jint i, jint primitiveIndex, jboolean enabled) {
@@ -543,13 +508,6 @@ Java_com_google_android_filament_RenderableManager_nSetGlobalBlendOrderEnabledAt
             (bool) enabled);
 }
 
-extern "C" JNIEXPORT jboolean JNICALL
-Java_com_google_android_filament_RenderableManager_nIsGlobalBlendOrderEnabledAt(JNIEnv*, jclass,
-        jlong nativeRenderableManager, jint i, jint primitiveIndex) {
-    RenderableManager *rm = (RenderableManager *) nativeRenderableManager;
-    return (jboolean) rm->isGlobalBlendOrderEnabledAt((RenderableManager::Instance) i, (size_t) primitiveIndex);
-}
-
 extern "C" JNIEXPORT jint JNICALL
 Java_com_google_android_filament_RenderableManager_nGetEnabledAttributesAt(JNIEnv*, jclass,
         jlong nativeRenderableManager, jint i, jint primitiveIndex) {

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

@@ -208,19 +208,3 @@ Java_com_google_android_filament_Renderer_nSetVsyncTime(JNIEnv *, jclass,
     Renderer *renderer = (Renderer *) nativeRenderer;
     renderer->setVsyncTime(steadyClockTimeNano);
 }
-
-extern "C"
-JNIEXPORT void JNICALL
-Java_com_google_android_filament_Renderer_nSkipNextFrames(JNIEnv *, jclass ,
-    jlong nativeRenderer, jint frameCount) {
-    Renderer *renderer = (Renderer *) nativeRenderer;
-    renderer->skipNextFrames(frameCount);
-}
-
-extern "C"
-JNIEXPORT jint JNICALL
-Java_com_google_android_filament_Renderer_nGetFrameToSkipCount(JNIEnv *, jclass ,
-    jlong nativeRenderer) {
-    Renderer *renderer = (Renderer *) nativeRenderer;
-    return renderer->getFrameToSkipCount();
-}

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

@@ -63,14 +63,6 @@ Java_com_google_android_filament_Skybox_nBuilderColor(JNIEnv *,  jclass,
     builder->color({r, g, b, a});
 }
 
-extern "C"
-JNIEXPORT void JNICALL
-Java_com_google_android_filament_Skybox_nBuilderPriority(JNIEnv *,  jclass,
-        jlong nativeSkyBoxBuilder, jint priority) {
-    Skybox::Builder *builder = (Skybox::Builder *) nativeSkyBoxBuilder;
-    builder->priority(uint8_t(priority));
-}
-
 extern "C" JNIEXPORT jlong JNICALL
 Java_com_google_android_filament_Skybox_nBuilderBuild(JNIEnv *env, jclass type,
         jlong nativeSkyBoxBuilder, jlong nativeEngine) {

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

@@ -21,11 +21,6 @@
 
 #ifdef __ANDROID__
 #include <android/bitmap.h>
-#include <android/hardware_buffer_jni.h>
-#include <backend/platforms/PlatformEGLAndroid.h>
-#   if FILAMENT_SUPPORTS_VULKAN
-#       include <backend/platforms/VulkanPlatformAndroid.h>
-#   endif
 #endif
 
 #include <filament/Engine.h>
@@ -173,13 +168,6 @@ Java_com_google_android_filament_Texture_nBuilderSwizzle(JNIEnv *, jclass ,
             (Texture::Swizzle)r, (Texture::Swizzle)g, (Texture::Swizzle)b, (Texture::Swizzle)a);
 }
 
-extern "C" JNIEXPORT void JNICALL
-Java_com_google_android_filament_Texture_nBuilderSamples(JNIEnv*, jclass,
-        jlong nativeBuilder, jint samples) {
-    Texture::Builder *builder = (Texture::Builder *) nativeBuilder;
-    builder->samples((uint8_t) samples);
-}
-
 extern "C"
 JNIEXPORT void JNICALL
 Java_com_google_android_filament_Texture_nBuilderImportTexture(JNIEnv*, jclass, jlong nativeBuilder, jlong id) {
@@ -400,57 +388,6 @@ Java_com_google_android_filament_Texture_nSetExternalImage(JNIEnv*, jclass, jlon
     texture->setExternalImage(*engine, (void*)eglImage);
 }
 
-extern "C"
-JNIEXPORT jboolean JNICALL
-Java_com_google_android_filament_Texture_nSetExternalImageByAHB(JNIEnv *env, jclass clazz,
-        jlong nativeTexture, jlong nativeEngine, jobject ahb) {
-    Texture *texture = (Texture *) nativeTexture;
-    Engine *engine = (Engine *) nativeEngine;
-
-#ifdef __ANDROID__
-    Platform* platform = engine->getPlatform();
-    AHardwareBuffer* nativeBuffer = nullptr;
-    if (__builtin_available(android 26, *)) {
-        nativeBuffer = AHardwareBuffer_fromHardwareBuffer(env, ahb);
-    }
-    if (!nativeBuffer) {
-        // either we're not on Android 26, or ahb wasn't a AHardwareBuffer
-        return JNI_FALSE;
-    }
-
-    if (engine->getBackend() == Backend::OPENGL) {
-        // CAVEAT: we assume that Backend::OPENGL on Android implies PlatformEGLAndroid.
-#if UTILS_HAS_RTTI
-        if (!dynamic_cast<PlatformEGLAndroid*>(platform)) {
-            return JNI_FALSE;
-        }
-#endif
-        auto* eglPlatform = (PlatformEGLAndroid*) platform;
-        auto ref = eglPlatform->createExternalImage(nativeBuffer, false);
-        texture->setExternalImage(*engine, ref);
-    }
-
-#if FILAMENT_SUPPORTS_VULKAN
-    else if (engine->getBackend() == Backend::VULKAN) {
-        // CAVEAT: we assume that Backend::VULKAN on Android implies VulkanPlatformAndroid.
-#if UTILS_HAS_RTTI
-        if (!dynamic_cast<VulkanPlatformAndroid*>(platform)) {
-            return JNI_FALSE;
-        }
-#endif
-        auto* vulkanPlatform = (VulkanPlatformAndroid*) platform;
-        auto ref = vulkanPlatform->createExternalImage(nativeBuffer, false);
-        texture->setExternalImage(*engine, ref);
-    }
-#endif // FILAMENT_SUPPORTS_VULKAN
-    // success!
-    return JNI_TRUE;
-#else
-    // other platforms could come here
-    return JNI_FALSE;
-#endif // __ANDROID__
-}
-
 extern "C" JNIEXPORT void JNICALL
 Java_com_google_android_filament_Texture_nSetExternalStream(JNIEnv*, jclass,
         jlong nativeTexture, jlong nativeEngine, jlong nativeStream) {
@@ -670,4 +607,3 @@ Java_com_google_android_filament_android_TextureHelper_nSetBitmapWithCallback(JN
 }
 
 #endif
-

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

@@ -52,11 +52,6 @@ Java_com_google_android_filament_ToneMapper_nCreatePBRNeutralToneMapper(JNIEnv*,
     return (jlong) new PBRNeutralToneMapper();
 }
 
-extern "C" JNIEXPORT jlong JNICALL
-Java_com_google_android_filament_ToneMapper_nCreateGT7ToneMapper(JNIEnv*, jclass) {
-    return (jlong) new GT7ToneMapper();
-}
-
 extern "C" JNIEXPORT jlong JNICALL
 Java_com_google_android_filament_ToneMapper_nCreateAgxToneMapper(JNIEnv*, jclass, jint look) {
     return (jlong) new AgxToneMapper(AgxToneMapper::AgxLook(look));

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

@@ -76,12 +76,6 @@ Java_com_google_android_filament_View_nSetVisibleLayers(JNIEnv*, jclass, jlong n
     view->setVisibleLayers((uint8_t) select, (uint8_t) value);
 }
 
-extern "C" JNIEXPORT jint JNICALL
-Java_com_google_android_filament_View_nGetVisibleLayers(JNIEnv*, jclass, jlong nativeView) {
-    View* view = (View*) nativeView;
-    return view->getVisibleLayers();
-}
-
 extern "C" JNIEXPORT void JNICALL
 Java_com_google_android_filament_View_nSetShadowingEnabled(JNIEnv*, jclass, jlong nativeView, jboolean enabled) {
     View* view = (View*) nativeView;
@@ -153,15 +147,6 @@ Java_com_google_android_filament_View_nSetDynamicResolutionOptions(JNIEnv*, jcla
     view->setDynamicResolutionOptions(options);
 }
 
-extern "C" JNIEXPORT void JNICALL
-Java_com_google_android_filament_View_nGetLastDynamicResolutionScale(JNIEnv *env, jclass, jlong nativeView, jfloatArray out_) {
-    jfloat* out = env->GetFloatArrayElements(out_, nullptr);
-    View *view = (View *) nativeView;
-    math::float2 result = view->getLastDynamicResolutionScale();
-    std::copy_n(result.v, 2, out);
-    env->ReleaseFloatArrayElements(out_, out, 0);
-}
-
 extern "C" JNIEXPORT void JNICALL
 Java_com_google_android_filament_View_nSetShadowType(JNIEnv*, jclass, jlong nativeView, jint type) {
     View* view = (View*) nativeView;
@@ -371,7 +356,6 @@ Java_com_google_android_filament_View_nSetFogOptions(JNIEnv *, jclass , jlong na
     view->setFogOptions(options);
 }
 
-
 extern "C" JNIEXPORT void JNICALL
 Java_com_google_android_filament_View_nSetBlendMode(JNIEnv *, jclass , jlong nativeView, jint blendMode) {
     View* view = (View*) nativeView;
@@ -446,18 +430,6 @@ Java_com_google_android_filament_View_nIsShadowingEnabled(JNIEnv *, jclass, jlon
     return (jboolean)view->isShadowingEnabled();
 }
 
-extern "C" JNIEXPORT void JNICALL
-Java_com_google_android_filament_View_nSetFrustumCullingEnabled(JNIEnv*, jclass, jlong nativeView, jboolean enabled) {
-    View* view = (View*) nativeView;
-    view->setFrustumCullingEnabled(enabled);
-}
-
-extern "C" JNIEXPORT jboolean JNICALL
-Java_com_google_android_filament_View_nIsFrustumCullingEnabled(JNIEnv*, jclass, jlong nativeView) {
-    View* view = (View*) nativeView;
-    return (jboolean)view->isFrustumCullingEnabled();
-}
-
 extern "C"
 JNIEXPORT void JNICALL
 Java_com_google_android_filament_View_nSetScreenSpaceRefractionEnabled(JNIEnv *, jclass,
@@ -582,20 +554,3 @@ Java_com_google_android_filament_View_nClearFrameHistory(JNIEnv *env, jclass cla
     Engine *engine = (Engine *) nativeEngine;
     view->clearFrameHistory(*engine);
 }
-
-extern "C"
-JNIEXPORT void JNICALL
-Java_com_google_android_filament_View_nSetChannelDepthClearEnabled(JNIEnv *, jclass ,
-        jlong nativeView, jint channel, jboolean enabled) {
-    View* view = (View*) nativeView;
-    view->setChannelDepthClearEnabled((uint8_t) channel, (bool) enabled);
-}
-
-extern "C"
-JNIEXPORT jboolean JNICALL
-Java_com_google_android_filament_View_nIsChannelDepthClearEnabled(JNIEnv *env, jclass clazz,
-        jlong nativeView, jint channel) {
-    // TODO: implement nIsChannelDepthClearEnabled()
-    View* view = (View*) nativeView;
-    return (jboolean)view->isChannelDepthClearEnabled((uint8_t) channel);
-}

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

@@ -99,15 +99,6 @@ final class Asserts {
         }
     }
 
-    @NonNull @Size(min = 2)
-    static float[] assertFloat2(@Nullable float[] out) {
-        if (out == null) out = new float[2];
-        else if (out.length < 2) {
-            throw new ArrayIndexOutOfBoundsException("Array length must be at least 2");
-        }
-        return out;
-    }
-
     @NonNull @Size(min = 4)
     static float[] assertFloat4(@Nullable float[] out) {
         if (out == null) out = new float[4];
@@ -136,13 +127,4 @@ final class Asserts {
             throw new ArrayIndexOutOfBoundsException("Array length must be at least 4");
         }
     }
-
-    @NonNull @Size(min = 2)
-    static double[] assertDouble2(@Nullable double[] out) {
-        if (out == null) out = new double[2];
-        else if (out.length < 2) {
-            throw new ArrayIndexOutOfBoundsException("Array length must be at least 2");
-        }
-        return out;
-    }
 }

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

@@ -343,27 +343,6 @@ public class Camera {
         nSetScaling(getNativeObject(), xscaling, yscaling);
     }
 
-    /**
-     * Sets a custom projection matrix for each eye.
-     *
-     * @param inProjection              An array of projection matrices, one for each eye.
-     *                                  Must have at least 16 * count elements.
-     * @param count                     Number of eyes to set.
-     * @param inProjectionForCulling    Custom projection matrix for culling, must encompass all eyes.
-     * @param near                      Distance to the near plane.
-     * @param far                       Distance to the far plane.
-     */
-    public void setCustomEyeProjection(
-            @NonNull double[] inProjection, int count,
-            @NonNull @Size(min = 16) double[] inProjectionForCulling,
-            double near, double far) {
-        Asserts.assertMat4dIn(inProjectionForCulling);
-        if (inProjection.length < 16 * count) {
-            throw new IllegalArgumentException("inProjection array too small for the given count");
-        }
-        nSetCustomEyeProjection(getNativeObject(), inProjection, count, inProjectionForCulling, near, far);
-    }
-
     /**
      * Sets an additional matrix that scales the projection matrix.
      *
@@ -420,31 +399,6 @@ public class Camera {
         nSetShift(getNativeObject(), xshift, yshift);
     }
 
-    /**
-     * Returns the shift amount used to translate the projection matrix.
-     *
-     * @param out A 2-double array where the shift will be stored, or null.
-     * @return A 2-double array containing the x and y shift.
-     */
-    @NonNull @Size(min = 2)
-    public double[] getShift(@Nullable @Size(min = 2) double[] out) {
-        out = Asserts.assertDouble2(out);
-        nGetShift(getNativeObject(), out);
-        return out;
-    }
-
-    /**
-     * Returns the camera's field of view in degrees.
-     *
-     * @param direction The direction of the FOV (VERTICAL or HORIZONTAL).
-     * @return The field of view in degrees.
-     */
-    public double getFieldOfViewInDegrees(@NonNull Fov direction) {
-        return nGetFieldOfViewInDegrees(getNativeObject(), direction.ordinal());
-    }
-
-
-
     /**
      * Sets the camera's model matrix.
      * <p>
@@ -791,17 +745,6 @@ public class Camera {
         return mEntity;
     }
 
-    /**
-     * Sets the model matrix for a specific eye.
-     *
-     * @param eyeId The index of the eye.
-     * @param model The model matrix for the eye.
-     */
-    public void setEyeModelMatrix(int eyeId, @NonNull @Size(min = 16) double[] model) {
-        Asserts.assertMat4dIn(model);
-        nSetEyeModelMatrix(getNativeObject(), eyeId, model);
-    }
-
     /**
      * Helper to compute the effective focal length taking into account the focus distance
      *
@@ -841,13 +784,8 @@ public class Camera {
     private static native void nSetCustomProjection(long nativeCamera, double[] inProjection, double[] inProjectionForCulling, double near, double far);
     private static native void nSetScaling(long nativeCamera, double x, double y);
     private static native void nSetShift(long nativeCamera, double x, double y);
-    private static native void nGetShift(long nativeCamera, double[] out);
     private static native void nSetModelMatrix(long nativeCamera, float[] in);
     private static native void nSetModelMatrixFp64(long nativeCamera, double[] in);
-    private static native void nSetEyeModelMatrix(long nativeCamera, int eyeId, double[] model);
-    private static native void nSetCustomEyeProjection(long nativeCamera, double[] inProjection, int count, double[] inProjectionForCulling, double near, double far);
-    private static native double nGetFieldOfViewInDegrees(long nativeCamera, int direction);
-
     private static native void nLookAt(long nativeCamera, double eyeX, double eyeY, double eyeZ, double centerX, double centerY, double centerZ, double upX, double upY, double upZ);
     private static native double nGetNear(long nativeCamera);
     private static native double nGetCullingFar(long nativeCamera);

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

@@ -264,8 +264,7 @@ public class Engine {
                     config.disableHandleUseAfterFreeCheck,
                     config.preferredShaderLanguage.ordinal(),
                     config.forceGLES2Context, config.assertNativeWindowIsValid,
-                    config.gpuContextPriority.ordinal(),
-                    config.sharedUboInitialSizeInBytes);
+                    config.gpuContextPriority.ordinal());
             return this;
         }
 
@@ -526,16 +525,6 @@ public class Engine {
          * GPU context priority level. Controls GPU work scheduling and preemption.
          */
         public GpuContextPriority gpuContextPriority = GpuContextPriority.DEFAULT;
-
-        /**
-         * The initial size in bytes of the shared uniform buffer used for material instance batching.
-         *
-         * If the buffer runs out of space during a frame, it will be automatically reallocated
-         * with a larger capacity. Setting an appropriate initial size can help avoid runtime
-         * reallocations, which can cause a minor performance stutter, at the cost of higher
-         * initial memory usage.
-         */
-        public long sharedUboInitialSizeInBytes = 256 * 64;
     }
 
     private Engine(long nativeEngine, Config config) {
@@ -939,15 +928,6 @@ public class Engine {
         return nIsValidSkinningBuffer(getNativeObject(), object.getNativeObject());
     }
 
-    /**
-     * Returns whether the object is valid.
-     * @param object Object to check for validity
-     * @return returns true if the specified object is valid.
-     */
-    public boolean isValidMorphTargetBuffer(@NonNull MorphTargetBuffer object) {
-        return nIsValidMorphTargetBuffer(getNativeObject(), object.getNativeObject());
-    }
-
     /**
      * Returns whether the object is valid.
      * @param object Object to check for validity
@@ -1201,15 +1181,6 @@ public class Engine {
         skinningBuffer.clearNativeObject();
     }
 
-    /**
-     * Destroys a {@link MorphTargetBuffer} and frees all its associated resources.
-     * @param morphTargetBuffer the {@link MorphTargetBuffer} to destroy
-     */
-    public void destroyMorphTargetBuffer(@NonNull MorphTargetBuffer morphTargetBuffer) {
-        assertDestroy(nDestroyMorphTargetBuffer(getNativeObject(), morphTargetBuffer.getNativeObject()));
-        morphTargetBuffer.clearNativeObject();
-    }
-
     /**
      * Destroys a {@link IndirectLight} and frees all its associated resources.
      * @param ibl the {@link IndirectLight} to destroy
@@ -1501,7 +1472,6 @@ public class Engine {
     private static native boolean nDestroyIndexBuffer(long nativeEngine, long nativeIndexBuffer);
     private static native boolean nDestroyVertexBuffer(long nativeEngine, long nativeVertexBuffer);
     private static native boolean nDestroySkinningBuffer(long nativeEngine, long nativeSkinningBuffer);
-    private static native boolean nDestroyMorphTargetBuffer(long nativeEngine, long nativeMorphTargetBuffer);
     private static native boolean nDestroyIndirectLight(long nativeEngine, long nativeIndirectLight);
     private static native boolean nDestroyMaterial(long nativeEngine, long nativeMaterial);
     private static native boolean nDestroyMaterialInstance(long nativeEngine, long nativeMaterialInstance);
@@ -1518,7 +1488,6 @@ public class Engine {
     private static native boolean nIsValidIndexBuffer(long nativeEngine, long nativeIndexBuffer);
     private static native boolean nIsValidVertexBuffer(long nativeEngine, long nativeVertexBuffer);
     private static native boolean nIsValidSkinningBuffer(long nativeEngine, long nativeSkinningBuffer);
-    private static native boolean nIsValidMorphTargetBuffer(long nativeEngine, long nativeMorphTargetBuffer);
     private static native boolean nIsValidIndirectLight(long nativeEngine, long nativeIndirectLight);
     private static native boolean nIsValidMaterial(long nativeEngine, long nativeMaterial);
     private static native boolean nIsValidMaterialInstance(long nativeEngine, long nativeMaterial, long nativeMaterialInstance);
@@ -1560,8 +1529,7 @@ public class Engine {
             boolean disableHandleUseAfterFreeCheck,
             int preferredShaderLanguage,
             boolean forceGLES2Context, boolean assertNativeWindowIsValid,
-            int gpuContextPriority,
-            long sharedUboInitialSizeInBytes);
+            int gpuContextPriority);
     private static native void nSetBuilderFeatureLevel(long nativeBuilder, int ordinal);
     private static native void nSetBuilderSharedContext(long nativeBuilder, long sharedContext);
     private static native void nSetBuilderPaused(long nativeBuilder, boolean paused);

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

@@ -54,7 +54,6 @@ public class Material {
         static final CullingMode[] sCullingModeValues = CullingMode.values();
         static final VertexBuffer.VertexAttribute[] sVertexAttributeValues =
                 VertexBuffer.VertexAttribute.values();
-        static final TransparencyMode[] sTransparencyModeValues = TransparencyMode.values();
     }
 
     private long mNativeObject;
@@ -161,31 +160,6 @@ public class Material {
         SCREEN,
     }
 
-    /**
-     * How transparent objects are handled
-     *
-     * @see
-     * <a href="https://google.github.io/filament/Materials.html#materialdefinitions/materialblock/blendingandtransparency:transparencymode">
-     * Blending and transparency: transparencyMode</a>
-     */
-    public enum TransparencyMode {
-        /** The transparent object is drawn honoring the raster state. */
-        DEFAULT,
-
-        /**
-         * The transparent object is first drawn in the depth buffer,
-         * then in the color buffer, honoring the culling mode, but ignoring the depth test function.
-         */
-        TWO_PASSES_ONE_SIDE,
-
-        /**
-         * The transparent object is drawn twice in the color buffer,
-         * first with back faces only, then with front faces; the culling
-         * mode is ignored. Can be combined with two-sided lighting.
-         */
-        TWO_PASSES_TWO_SIDES
-    }
-
     /**
      * Supported refraction modes
      *
@@ -287,20 +261,6 @@ public class Material {
         LOW
     }
 
-    /**
-     * Defines whether a material instance should use UBO batching or not.
-     */
-    public enum UboBatchingMode {
-        /**
-         * For default, it follows the engine settings.
-         * If UBO batching is enabled on the engine and the material domain is SURFACE, it
-         * turns on the UBO batching. Otherwise, it turns off the UBO batching.
-        */
-        DEFAULT,
-        /** Disable the Ubo Batching for this material */
-        DISABLED
-    }
-
     public static class UserVariantFilterBit {
         /** Directional lighting */
         public static int DIRECTIONAL_LIGHTING = 0x01;
@@ -412,7 +372,6 @@ public class Material {
         private int mSize;
         private int mShBandCount = 0;
         private ShadowSamplingQuality mShadowSamplingQuality = ShadowSamplingQuality.LOW;
-        private UboBatchingMode mUboBatchingMode = UboBatchingMode.DEFAULT;
 
 
         /**
@@ -457,17 +416,6 @@ public class Material {
             return this;
         }
 
-        /**
-         * Set the batching mode of the instances created from this material.
-         * @param uboBatchingMode
-         * @return Reference to this Builder for chaining calls.
-         */
-        @NonNull
-        public Builder uboBatching(UboBatchingMode mode) {
-            mUboBatchingMode = mode;
-            return this;
-        }
-
         /**
          * Creates and returns the Material object.
          *
@@ -480,7 +428,7 @@ public class Material {
         @NonNull
         public Material build(@NonNull Engine engine) {
             long nativeMaterial = nBuilderBuild(engine.getNativeObject(),
-                mBuffer, mSize, mShBandCount, mShadowSamplingQuality.ordinal(), mUboBatchingMode.ordinal());
+                mBuffer, mSize, mShBandCount, mShadowSamplingQuality.ordinal());
             if (nativeMaterial == 0) throw new IllegalStateException("Couldn't create Material");
             return new Material(nativeMaterial);
         }
@@ -613,18 +561,6 @@ public class Material {
         return EnumCache.sBlendingModeValues[nGetBlendingMode(getNativeObject())];
     }
 
-    /**
-     * Returns the transparency mode of this material.
-     * This value only makes sense when the blending mode is transparent or fade.
-     *
-     * @see
-     * <a href="https://google.github.io/filament/Materials.html#materialdefinitions/materialblock/blendingandtransparency:transparencymode">
-     * Blending and transparency: transparencyMode</a>
-     */
-    public TransparencyMode getTransparencyMode() {
-        return EnumCache.sTransparencyModeValues[nGetTransparencyMode(getNativeObject())];
-    }
-
     /**
      * Returns the refraction mode of this material.
      *
@@ -851,21 +787,6 @@ public class Material {
         return nHasParameter(getNativeObject(), name);
     }
 
-    /**
-     * 
-     * Returns the name of the transform parameter associated with the given sampler parameter.
-     * In the case the parameter doesn't have a transform name field, it will return an empty string.
-     * 
-     * @param samplerName the name of the sampler parameter to query.
-     * 
-     * @see
-     * <a href="https://google.github.io/filament/Materials.html#materialdefinitions/materialblock/general:parameters">
-     * General: parameters</a>
-     */
-    public String getParameterTransformName(@NonNull String samplerName) {
-        return nGetParameterTransformName(getNativeObject(), samplerName);
-    }
-
     /**
      * Sets the value of a bool parameter on this material's default instance.
      *
@@ -1158,7 +1079,7 @@ public class Material {
         mNativeObject = 0;
     }
 
-    private static native long nBuilderBuild(long nativeEngine, @NonNull Buffer buffer, int size, int shBandCount, int shadowQuality, int uboBatchingMode);
+    private static native long nBuilderBuild(long nativeEngine, @NonNull Buffer buffer, int size, int shBandCount, int shadowQuality);
     private static native long nCreateInstance(long nativeMaterial);
     private static native long nCreateInstanceWithName(long nativeMaterial, @NonNull String name);
     private static native long nGetDefaultInstance(long nativeMaterial);
@@ -1168,7 +1089,6 @@ public class Material {
     private static native int nGetShading(long nativeMaterial);
     private static native int nGetInterpolation(long nativeMaterial);
     private static native int nGetBlendingMode(long nativeMaterial);
-    private static native int nGetTransparencyMode(long nativeMaterial);
     private static native int nGetVertexDomain(long nativeMaterial);
     private static native int nGetCullingMode(long nativeMaterial);
     private static native boolean nIsColorWriteEnabled(long nativeMaterial);
@@ -1191,5 +1111,4 @@ public class Material {
     private static native int nGetRequiredAttributes(long nativeMaterial);
 
     private static native boolean nHasParameter(long nativeMaterial, @NonNull String name);
-    private static native String nGetParameterTransformName(long nativeMaterial, @NonNull String samplerName);
 }

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

@@ -537,14 +537,6 @@ public class MaterialInstance {
         nSetDoubleSided(getNativeObject(), doubleSided);
     }
 
-    /**
-     * Sets the transparency mode for this material instance.
-     * @see Material.TransparencyMode
-     */
-    public void setTransparencyMode(@NonNull Material.TransparencyMode mode) {
-        nSetTransparencyMode(getNativeObject(), mode.ordinal());
-    }
-
     /**
      * Returns whether double-sided lighting is enabled when the parent Material has double-sided
      * capability.
@@ -553,14 +545,6 @@ public class MaterialInstance {
         return nIsDoubleSided(getNativeObject());
     }
 
-    /**
-     * Returns the transparency mode.
-     */
-    @NonNull
-    public Material.TransparencyMode getTransparencyMode() {
-        return Material.EnumCache.sTransparencyModeValues[nGetTransparencyMode(getNativeObject())];
-    }
-
     /**
      * Overrides the default triangle culling state that was set on the material.
      *
@@ -998,6 +982,4 @@ public class MaterialInstance {
     private static native boolean nIsStencilWriteEnabled(long nativeMaterialInstance);
     private static native boolean nIsDepthCullingEnabled(long nativeMaterialInstance);
     private static native int nGetDepthFunc(long nativeMaterialInstance);
-    private static native void nSetTransparencyMode(long nativeMaterialInstance, int mode);
-    private static native int nGetTransparencyMode(long nativeMaterialInstance);
 }

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

@@ -64,45 +64,6 @@ public class MorphTargetBuffer {
             return this;
         }
 
-        /**
-         * Use this method to enable or disable the built-in position morphing buffer.
-         * Default is true.
-         *
-         * @param enabled true to enable, false to disable
-         * @return this <code>Builder</code> object for chaining calls
-         */
-        @NonNull
-        public Builder withPositions(boolean enabled) {
-            nBuilderWithPositions(mNativeBuilder, enabled);
-            return this;
-        }
-
-        /**
-         * Use this method to enable or disable the built-in tangent morphing buffer.
-         * Default is true.
-         *
-         * @param enabled true to enable, false to disable
-         * @return this <code>Builder</code> object for chaining calls
-         */
-        @NonNull
-        public Builder withTangents(boolean enabled) {
-            nBuilderWithTangents(mNativeBuilder, enabled);
-            return this;
-        }
-
-        /**
-         * Use this method to enable or disable custom morphing.
-         * Default is false.
-         *
-         * @param enabled true to enable, false to disable
-         * @return this <code>Builder</code> object for chaining calls
-         */
-        @NonNull
-        public Builder enableCustomMorphing(boolean enabled) {
-            nBuilderEnableCustomMorphing(mNativeBuilder, enabled);
-            return this;
-        }
-
         /**
          * Creates and returns the <code>MorphTargetBuffer</code> object.
          *
@@ -195,27 +156,6 @@ public class MorphTargetBuffer {
         return nGetCount(mNativeObject);
     }
 
-    /**
-     * @return true if this MorphTargetBuffer has a position buffer.
-     */
-    public boolean hasPositions() {
-        return nHasPositions(mNativeObject);
-    }
-
-    /**
-     * @return true if this MorphTargetBuffer has a tangent buffer.
-     */
-    public boolean hasTangents() {
-        return nHasTangents(mNativeObject);
-    }
-
-    /**
-     * @return true if custom morphing is enabled.
-     */
-    public boolean isCustomMorphingEnabled() {
-        return nIsCustomMorphingEnabled(mNativeObject);
-    }
-
     public long getNativeObject() {
         if (mNativeObject == 0) {
             throw new IllegalStateException("Calling method on destroyed MorphTargetBuffer");
@@ -231,16 +171,10 @@ public class MorphTargetBuffer {
     private static native void nDestroyBuilder(long nativeBuilder);
     private static native void nBuilderVertexCount(long nativeBuilder, int vertexCount);
     private static native void nBuilderCount(long nativeBuilder, int count);
-    private static native void nBuilderWithPositions(long nativeBuilder, boolean enabled);
-    private static native void nBuilderWithTangents(long nativeBuilder, boolean enabled);
-    private static native void nBuilderEnableCustomMorphing(long nativeBuilder, boolean enabled);
     private static native long nBuilderBuild(long nativeBuilder, long nativeEngine);
 
     private static native int nSetPositionsAt(long nativeObject, long nativeEngine, int targetIndex, float[] positions, int count);
     private static native int nSetTangentsAt(long nativeObject, long nativeEngine, int targetIndex, short[] tangents, int count);
     private static native int nGetVertexCount(long nativeObject);
     private static native int nGetCount(long nativeObject);
-    private static native boolean nHasPositions(long nativeObject);
-    private static native boolean nHasTangents(long nativeObject);
-    private static native boolean nIsCustomMorphingEnabled(long nativeObject);
 }

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

@@ -332,7 +332,7 @@ public class RenderableManager {
         }
 
         /**
-         * Set the channel this renderable is associated to. There can be 8 channels.
+         * Set the channel this renderable is associated to. There can be 4 channels.
          *
          * <p>All renderables in a given channel are rendered together, regardless of anything else.
          * They are sorted as usual within a channel.</p>
@@ -342,16 +342,16 @@ public class RenderableManager {
          * <p>Channels 0 and 1 may not have render primitives using a material with `refractionType`
          * set to `screenspace`.</p>
          *
-         * @param channel clamped to the range [0..7], defaults to 2.
+         * @param channel clamped to the range [0..3], defaults to 2.
          *
          * @return Builder reference for chaining calls.
          *
-         * @see Builder#blendOrder()
-         * @see Builder#priority()
+         * @see Builder::blendOrder()
+         * @see Builder::priority()
          * @see RenderableManager::setBlendOrderAt()
          */
         @NonNull
-        public Builder channel(@IntRange(from = 0, to = 7) int channel) {
+        public Builder channel(@IntRange(from = 0, to = 3) int channel) {
             nBuilderChannel(mNativeBuilder, channel);
             return this;
         }
@@ -725,23 +725,15 @@ public class RenderableManager {
         nSetPriority(mNativeObject, i, priority);
     }
 
-    public int getPriority(@EntityInstance int i) {
-        return nGetPriority(mNativeObject, i);
-    }
-
     /**
      * Changes the channel of a renderable
      *
      * @see Builder#channel
      */
-    public void setChannel(@EntityInstance int i, @IntRange(from = 0, to = 7) int channel) {
+    public void setChannel(@EntityInstance int i, @IntRange(from = 0, to = 3) int channel) {
         nSetChannel(mNativeObject, i, channel);
     }
 
-    public int getChannel(@EntityInstance int i) {
-        return nGetChannel(mNativeObject, i);
-    }
-
     /**
      * Changes whether or not frustum culling is on.
      *
@@ -751,10 +743,6 @@ public class RenderableManager {
         nSetCulling(mNativeObject, i, enabled);
     }
 
-    public boolean isCullingEnabled(@EntityInstance int i) {
-        return nIsCullingEnabled(mNativeObject, i);
-    }
-
     /**
      * Changes whether or not the large-scale fog is applied to this renderable
      * @see Builder#fog
@@ -824,10 +812,6 @@ public class RenderableManager {
         nSetScreenSpaceContactShadows(mNativeObject, i, enabled);
     }
 
-    public boolean isScreenSpaceContactShadowsEnabled(@EntityInstance int i) {
-        return nIsScreenSpaceContactShadowsEnabled(mNativeObject, i);
-    }
-
     /**
      * Checks if the renderable can cast shadows.
      *
@@ -948,10 +932,6 @@ public class RenderableManager {
         nSetBlendOrderAt(mNativeObject, instance, primitiveIndex, blendOrder);
     }
 
-    public int getBlendOrderAt(@EntityInstance int instance, @IntRange(from = 0) int primitiveIndex) {
-        return nGetBlendOrderAt(mNativeObject, instance, primitiveIndex);
-    }
-
     /**
      * Changes whether the blend order is global or local to this Renderable (by default).
      *
@@ -966,10 +946,6 @@ public class RenderableManager {
         nSetGlobalBlendOrderEnabledAt(mNativeObject, instance, primitiveIndex, enabled);
     }
 
-    public boolean isGlobalBlendOrderEnabledAt(@EntityInstance int instance, @IntRange(from = 0) int primitiveIndex) {
-        return nIsGlobalBlendOrderEnabledAt(mNativeObject, instance, primitiveIndex);
-    }
-
     /**
      * Retrieves the set of enabled attribute slots in the given primitive's VertexBuffer.
      */
@@ -1037,11 +1013,8 @@ public class RenderableManager {
     private static native void nSetAxisAlignedBoundingBox(long nativeRenderableManager, int i, float cx, float cy, float cz, float ex, float ey, float ez);
     private static native void nSetLayerMask(long nativeRenderableManager, int i, int select, int value);
     private static native void nSetPriority(long nativeRenderableManager, int i, int priority);
-    private static native int nGetPriority(long nativeRenderableManager, int i);
     private static native void nSetChannel(long nativeRenderableManager, int i, int channel);
-    private static native int nGetChannel(long nativeRenderableManager, int i);
     private static native void nSetCulling(long nativeRenderableManager, int i, boolean enabled);
-    private static native boolean nIsCullingEnabled(long nativeRenderableManager, int i);
     private static native void nSetFogEnabled(long nativeRenderableManager, int i, boolean enabled);
     private static native boolean nGetFogEnabled(long nativeRenderableManager, int i);
     private static native void nSetLightChannel(long nativeRenderableManager, int i, int channel, boolean enable);
@@ -1049,7 +1022,6 @@ public class RenderableManager {
     private static native void nSetCastShadows(long nativeRenderableManager, int i, boolean enabled);
     private static native void nSetReceiveShadows(long nativeRenderableManager, int i, boolean enabled);
     private static native void nSetScreenSpaceContactShadows(long nativeRenderableManager, int i, boolean enabled);
-    private static native boolean nIsScreenSpaceContactShadowsEnabled(long nativeRenderableManager, int i);
     private static native boolean nIsShadowCaster(long nativeRenderableManager, int i);
     private static native boolean nIsShadowReceiver(long nativeRenderableManager, int i);
     private static native void nGetAxisAlignedBoundingBox(long nativeRenderableManager, int i, float[] center, float[] halfExtent);
@@ -1060,8 +1032,6 @@ public class RenderableManager {
     private static native long nGetMaterialInstanceAt(long nativeRenderableManager, int i, int primitiveIndex);
     private static native void nSetGeometryAt(long nativeRenderableManager, int i, int primitiveIndex, int primitiveType, long nativeVertexBuffer, long nativeIndexBuffer, int offset, int count);
     private static native void nSetBlendOrderAt(long nativeRenderableManager, int i, int primitiveIndex, int blendOrder);
-    private static native int nGetBlendOrderAt(long nativeRenderableManager, int i, int primitiveIndex);
     private static native void nSetGlobalBlendOrderEnabledAt(long nativeRenderableManager, int i, int primitiveIndex, boolean enabled);
-    private static native boolean nIsGlobalBlendOrderEnabledAt(long nativeRenderableManager, int i, int primitiveIndex);
     private static native int nGetEnabledAttributesAt(long nativeRenderableManager, int i, int primitiveIndex);
 }

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

@@ -732,22 +732,6 @@ public class Renderer {
         nResetUserTime(getNativeObject());
     }
 
-    /**
-     * Requests the next frameCount frames to be skipped. For Debugging.
-     * @param frameCount number of frames to skip.
-     */
-    public void skipNextFrames(int frameCount) {
-        nSkipNextFrames(getNativeObject(), frameCount);
-    }
-
-    /**
-     * Remainder count of frame to be skipped
-     * @return remaining frames to be skipped
-     */
-    public int getFrameToSkipCount() {
-        return nGetFrameToSkipCount(getNativeObject());
-    }
-
     public long getNativeObject() {
         if (mNativeObject == 0) {
             throw new IllegalStateException("Calling method on destroyed Renderer");
@@ -789,7 +773,4 @@ public class Renderer {
             float interval, float headRoomRatio, float scaleRate, int history);
     private static native void nSetClearOptions(long nativeRenderer,
             float r, float g, float b, float a, boolean clear, boolean discard);
-
-    private static native void nSkipNextFrames(long nativeObject, int frameCount);
-    private static native int nGetFrameToSkipCount(long nativeObject);
 }

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

@@ -155,24 +155,6 @@ public class Skybox {
             return this;
         }
 
-        /**
-         * Set the rendering priority of the Skybox. By default, it is set to the lowest
-         * priority (7) such that the Skybox is always rendered after the opaque objects,
-         * to reduce overdraw when depth culling is enabled.
-         *
-         * @param priority clamped to the range [0..7], defaults to 4; 7 is lowest priority
-         *                 (rendered last).
-         *
-         * @return Builder reference for chaining calls.
-         *
-         * @see RenderableManager.Builder#priority
-         */
-        @NonNull
-        public Builder priority(@IntRange(from = 0, to = 7) int priority) {
-            nBuilderPriority(mNativeBuilder, priority);
-            return this;
-        }
-
         /**
          * Creates a <code>Skybox</code> object
          *
@@ -280,7 +262,6 @@ public class Skybox {
     private static native void nBuilderShowSun(long nativeSkyboxBuilder, boolean show);
     private static native void nBuilderIntensity(long nativeSkyboxBuilder, float intensity);
     private static native void nBuilderColor(long nativeSkyboxBuilder, float r, float g, float b, float a);
-    private static native void nBuilderPriority(long nativeSkyboxBuilder, int priority);
     private static native long nBuilderBuild(long nativeSkyboxBuilder, long nativeEngine);
     private static native void nSetLayerMask(long nativeSkybox, int select, int value);
     private static native int  nGetLayerMask(long nativeSkybox);

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

@@ -71,16 +71,6 @@ import static com.google.android.filament.Texture.Type.COMPRESSED;
  * @see MaterialInstance#setParameter(String, Texture, TextureSampler)
  */
 public class Texture {
-
-    private static Class<?> HardwareBufferClass = null;
-
-    static {
-        try {
-            HardwareBufferClass = Class.forName("android.hardware.HardwareBuffer");
-        } catch (ClassNotFoundException ignored) {
-        }
-    }
-
     private static final Sampler[] sSamplerValues = Sampler.values();
     private static final InternalFormat[] sInternalFormatValues = InternalFormat.values();
 
@@ -795,17 +785,6 @@ public class Texture {
             return this;
         }
 
-        /**
-         * Specifies the number of samples for multisample anti-aliasing.
-         * @param samples number of samples, must be at least 1. Default is 1.
-         * @return This Builder, for chaining calls.
-         */
-        @NonNull
-        public Builder samples(@IntRange(from = 1) int samples) {
-            nBuilderSamples(mNativeBuilder, samples);
-            return this;
-        }
-
         /**
          * Specifies the texture's internal format.
          * <p>The internal format specifies how texels are stored (which may be different from how
@@ -1193,38 +1172,6 @@ public class Texture {
         nSetExternalImage(getNativeObject(), engine.getNativeObject(), eglImage);
     }
 
-    /**
-     * Specifies the external image to associate with this <code>Texture</code>.
-     *
-     * <p>Typically, the external image is OS specific, and can be a video or camera frame.
-     * There are many restrictions when using an external image as a texture, such as:</p>
-     * <ul>
-     *   <li> only the level of detail (lod) 0 can be specified</li>
-     *   <li> only nearest or linear filtering is supported</li>
-     *   <li> the size and format of the texture is defined by the external image</li>
-     *   <li> only the CLAMP_TO_EDGE wrap mode is supported</li>
-     * </ul>
-     *
-     * @param engine    {@link Engine} this texture is associated to. Must be the
-     *                  instance passed to {@link Builder#build Builder.build()}.
-     * @param externalImageRef An OS specific Object. On Android it must be a
-     *                         <code>android.hardware.HardwareBuffer</code>
-     */
-    public void setExternalImage(@NonNull Engine engine, Object externalImageRef) {
-        if (HardwareBufferClass != null) {
-            if (!HardwareBufferClass.isInstance(externalImageRef)) {
-                throw new IllegalArgumentException("externalImageRef must be a AHardwareBuffer");
-            }
-            if (!nSetExternalImageByAHB(getNativeObject(), engine.getNativeObject(), externalImageRef)) {
-                throw new IllegalStateException("Error setting AHardwareBuffer as external image");
-            }
-        } else {
-            throw new UnsupportedOperationException(
-                "setExternalImage(Engine, Object) not supported on this platform");
-        }
-    }
-
-
     /**
      * Specifies the external stream to associate with this <code>Texture</code>.
      *
@@ -1381,7 +1328,6 @@ public class Texture {
     private static native void nBuilderFormat(long nativeBuilder, int format);
     private static native void nBuilderUsage(long nativeBuilder, int flags);
     private static native void nBuilderSwizzle(long nativeBuilder, int r, int g, int b, int a);
-    private static native void nBuilderSamples(long nativeBuilder, int samples);
     private static native void nBuilderImportTexture(long nativeBuilder, long id);
     private static native void nBuilderExternal(long nativeBuilder);
     private static native long nBuilderBuild(long nativeBuilder, long nativeEngine);
@@ -1418,8 +1364,6 @@ public class Texture {
     private static native void nSetExternalImage(
             long nativeObject, long nativeEngine, long eglImage);
 
-    private static native boolean nSetExternalImageByAHB(long nativeTexture, long nativeObject, Object ahb);
-
     private static native void nSetExternalStream(long nativeTexture,
             long nativeEngine, long nativeStream);
 

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

@@ -294,8 +294,8 @@ public class TextureSampler {
     /**
      * This controls anisotropic filtering.
      *
-     * @param anisotropy Amount of anisotropy, should be a power-of-two. The default is 1.
-     *                   The maximum permissible value is 128.
+     * @param anisotropy Amount of anisotropy, should be a power-of-two. The default is 0.
+     *                   The maximum permissible value is 7.
      */
     public void setAnisotropy(float anisotropy) {
         mSampler = nSetAnisotropy(mSampler, anisotropy);

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

@@ -24,7 +24,6 @@ package com.google.android.filament;
  *   <li>ACESLegacyToneMapper</li>
  *   <li>FilmicToneMapper</li>
  *   <li>PBRNeutralToneMapper</li>
- *   <li>GT7ToneMapper</li>
  * </ul>
  * <li>Debug/validation tone mapping operators</li>
  * <ul>
@@ -112,19 +111,6 @@ public class ToneMapper {
         }
     }
 
-    /**
-     * Gran Turismo 7 tone mapping operator. This tone mapper was designed
-     * to preserve the appearance of materials across lighting conditions while
-     * avoiding artifacts in the highlights in high dynamic range conditions.
-     * This tone mapper targets an SDR paper white value of 250 nits, with a
-     * reference luminance of 100 cd/m^2 (a value of 1.0 in the HDR framebuffer).
-     */
-    public static class GT7ToneMapper extends ToneMapper {
-        public GT7ToneMapper() {
-            super(nCreateGT7ToneMapper());
-        }
-    }
-
     /**
      * AgX tone mapping operator.
      */
@@ -258,7 +244,6 @@ public class ToneMapper {
     private static native long nCreateACESLegacyToneMapper();
     private static native long nCreateFilmicToneMapper();
     private static native long nCreatePBRNeutralToneMapper();
-    private static native long nCreateGT7ToneMapper();
     private static native long nCreateAgxToneMapper(int look);
     private static native long nCreateGenericToneMapper(
             float contrast, float midGrayIn, float midGrayOut, float hdrMax);

android/filament-tools/.gitignore

@@ -1,12 +0,0 @@
-*.iml
-.gradle
-/local.properties
-/.idea/workspace.xml
-/.idea/libraries
-/.idea/caches
-/.idea/gradle.xml
-.DS_Store
-/build
-/captures
-.externalNativeBuild
-/.cxx

android/filament-tools/build.gradle

@@ -1,64 +0,0 @@
-plugins {
-    id "de.undercouch.download" version "5.6.0"
-}
-
-apply from: rootProject.file('gradle/gradle-mvn-push.gradle')
-
-def tools = ['matc', 'cmgen']
-
-def platforms = [
-    'mac':     [classifier: 'osx-aarch_64',    archive: "filament-v${VERSION_NAME}-mac.tgz",     path: { t -> "filament/bin/${t}" }],
-    'linux':   [classifier: 'linux-x86_64',   archive: "filament-v${VERSION_NAME}-linux.tgz",   path: { t -> "filament/bin/${t}" }],
-    'windows': [classifier: 'windows-x86_64', archive: "filament-v${VERSION_NAME}-windows.tgz", path: { t -> "bin/${t}.exe" }]
-]
-
-platforms.each { platform, config ->
-    def platformName = platform.capitalize()
-    def remoteUrl = "https://github.com/google/filament/releases/download/v${VERSION_NAME}/${config.archive}"
-    def downloadFile = file("${buildDir}/downloads/${config.archive}")
-    def extractDir = file("${buildDir}/extracted/filament-v${VERSION_NAME}-${platform}")
-
-    task "downloadRelease${platformName}"(type: Download) {
-        src remoteUrl
-        dest downloadFile
-        overwrite false
-    }
-
-    def extractionTask = task "extractTools${platformName}"(dependsOn: "downloadRelease${platformName}", type: Copy) {
-        group = "setup"
-        from tarTree(resources.gzip(downloadFile))
-
-        // Include specific tools based on platform pattern
-        include tools.collect { tool -> config.path(tool) }
-
-        // Flatten the path so it lands directly in 'into'
-        eachFile { fcd ->
-            fcd.relativePath = new RelativePath(true, fcd.name)
-        }
-
-        into extractDir
-        includeEmptyDirs = false
-    }
-}
-
-publishing {
-    publications {
-        tools.each { toolName ->
-            create(toolName, MavenPublication) {
-                artifactId = toolName
-
-                platforms.each { platform, config ->
-                    def extractDir = file("${buildDir}/extracted/filament-v${VERSION_NAME}-${platform}")
-                    def archivePath = config.path(toolName)
-                    def exeName = new File(archivePath).name
-
-                    artifact(new File(extractDir, exeName)) {
-                        classifier = config.classifier
-                        extension = "exe"
-                        builtBy tasks.named("extractTools${platform.capitalize()}")
-                    }
-                }
-            }
-        }
-    }
-}

android/filament-tools/gradle.properties

@@ -1,2 +0,0 @@
-POM_NAME=Filament
-POM_PACKAGING=exe

android/filament-utils-android/CMakeLists.txt

@@ -22,10 +22,6 @@ add_library(image STATIC IMPORTED)
 set_target_properties(image PROPERTIES IMPORTED_LOCATION
         ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libimage.a)
 
-add_library(imageio-lite STATIC IMPORTED)
-set_target_properties(imageio-lite PROPERTIES IMPORTED_LOCATION
-        ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libimageio-lite.a)
-
 add_library(ktxreader STATIC IMPORTED)
 set_target_properties(ktxreader PROPERTIES IMPORTED_LOCATION
         ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libktxreader.a)
@@ -34,10 +30,6 @@ add_library(viewer STATIC IMPORTED)
 set_target_properties(viewer PROPERTIES IMPORTED_LOCATION
         ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libviewer.a)
 
-add_library(imagediff STATIC IMPORTED)
-set_target_properties(imagediff PROPERTIES IMPORTED_LOCATION
-        ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libimagediff.a)
-
 add_library(civetweb STATIC IMPORTED)
 set_target_properties(civetweb PROPERTIES IMPORTED_LOCATION
         ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libcivetweb.a)
@@ -65,7 +57,6 @@ add_library(filament-utils-jni SHARED
         src/main/cpp/IBLPrefilterContext.cpp
         src/main/cpp/Utils.cpp
         src/main/cpp/Manipulator.cpp
-        src/main/cpp/ImageDiff.cpp
         src/main/cpp/RemoteServer.cpp
 
         ${IMAGEIO_DIR}/include/imageio/ImageDecoder.h
@@ -83,7 +74,6 @@ target_include_directories(filament-utils-jni PRIVATE
         ${FILAMENT_DIR}/include
         ../../filament/backend/include
         ${IMAGEIO_DIR}/include
-        ../../libs/imagediff/include
         ../../libs/utils/include)
 
 set_target_properties(filament-utils-jni PROPERTIES LINK_DEPENDS ${VERSION_SCRIPT})
@@ -95,13 +85,10 @@ target_link_libraries(filament-utils-jni
         PRIVATE camutils
         PRIVATE iblprefilter
         PRIVATE image
-        PRIVATE imageio-lite
         PRIVATE filament-jni
         PRIVATE ktxreader
         PRIVATE viewer
-        PRIVATE imagediff
         PRIVATE log
         PRIVATE utils
         PRIVATE perfetto        # needed only when FILAMENT_ENABLE_PERFETTO is defined
-        PRIVATE jnigraphics     # needed for AndroidBitmap_* functions in ImageDiff
 )

android/filament-utils-android/src/main/cpp/AutomationEngine.cpp

@@ -159,50 +159,37 @@ extern "C" JNIEXPORT void JNICALL
 Java_com_google_android_filament_utils_AutomationEngine_nGetViewerOptions(JNIEnv* env, jclass,
         jlong nativeObject, jobject result) {
     AutomationEngine* automation = (AutomationEngine*) nativeObject;
-    const auto& settings = automation->getSettings();
-    const auto& options = settings.viewer;
+    auto options = automation->getViewerOptions();
 
     const jclass klass = env->GetObjectClass(result);
 
+    const jfieldID cameraAperture = env->GetFieldID(klass, "cameraAperture", "F");
+    const jfieldID cameraSpeed = env->GetFieldID(klass, "cameraSpeed", "F");
+    const jfieldID cameraISO = env->GetFieldID(klass, "cameraISO", "F");
+    const jfieldID cameraNear = env->GetFieldID(klass, "cameraNear", "F");
+    const jfieldID cameraFar = env->GetFieldID(klass, "cameraFar", "F");
     const jfieldID groundShadowStrength = env->GetFieldID(klass, "groundShadowStrength", "F");
     const jfieldID groundPlaneEnabled = env->GetFieldID(klass, "groundPlaneEnabled", "Z");
     const jfieldID skyboxEnabled = env->GetFieldID(klass, "skyboxEnabled", "Z");
+    const jfieldID cameraFocalLength = env->GetFieldID(klass, "cameraFocalLength", "F");
+    const jfieldID cameraFocusDistance = env->GetFieldID(klass, "cameraFocusDistance", "F");
     const jfieldID autoScaleEnabled = env->GetFieldID(klass, "autoScaleEnabled", "Z");
     const jfieldID autoInstancingEnabled = env->GetFieldID(klass, "autoInstancingEnabled", "Z");
 
+    env->SetFloatField(result, cameraAperture, options.cameraAperture);
+    env->SetFloatField(result, cameraSpeed, options.cameraSpeed);
+    env->SetFloatField(result, cameraISO, options.cameraISO);
+    env->SetFloatField(result, cameraNear, options.cameraNear);
+    env->SetFloatField(result, cameraFar, options.cameraFar);
     env->SetFloatField(result, groundShadowStrength, options.groundShadowStrength);
     env->SetBooleanField(result, groundPlaneEnabled, options.groundPlaneEnabled);
     env->SetBooleanField(result, skyboxEnabled, options.skyboxEnabled);
+    env->SetFloatField(result, cameraFocalLength, options.cameraFocalLength);
+    env->SetFloatField(result, cameraFocusDistance, options.cameraFocusDistance);
     env->SetBooleanField(result, autoScaleEnabled, options.autoScaleEnabled);
     env->SetBooleanField(result, autoInstancingEnabled, options.autoInstancingEnabled);
 }
 
-extern "C" JNIEXPORT void JNICALL
-Java_com_google_android_filament_utils_AutomationEngine_nGetCameraSettings(JNIEnv* env, jclass,
-        jlong nativeObject, jobject result) {
-    AutomationEngine* automation = (AutomationEngine*) nativeObject;
-    const auto& settings = automation->getSettings();
-    const auto& camera = settings.camera;
-
-    const jclass klass = env->GetObjectClass(result);
-
-    const jfieldID aperture = env->GetFieldID(klass, "aperture", "F");
-    const jfieldID shutterSpeed = env->GetFieldID(klass, "shutterSpeed", "F");
-    const jfieldID sensitivity = env->GetFieldID(klass, "sensitivity", "F");
-    const jfieldID near = env->GetFieldID(klass, "near", "F");
-    const jfieldID far = env->GetFieldID(klass, "far", "F");
-    const jfieldID focalLength = env->GetFieldID(klass, "focalLength", "F");
-    const jfieldID focusDistance = env->GetFieldID(klass, "focusDistance", "F");
-
-    env->SetFloatField(result, aperture, camera.aperture);
-    env->SetFloatField(result, shutterSpeed, camera.shutterSpeed);
-    env->SetFloatField(result, sensitivity, camera.sensitivity);
-    env->SetFloatField(result, near, camera.near);
-    env->SetFloatField(result, far, camera.far);
-    env->SetFloatField(result, focalLength, camera.focalLength);
-    env->SetFloatField(result, focusDistance, camera.focusDistance);
-}
-
 extern "C" JNIEXPORT jlong JNICALL
 Java_com_google_android_filament_utils_AutomationEngine_nGetColorGrading(JNIEnv*, jclass,
         jlong nativeObject, jlong nativeEngine) {
@@ -228,18 +215,6 @@ Java_com_google_android_filament_utils_AutomationEngine_nShouldClose(JNIEnv*, jc
     return automation->shouldClose();
 }
 
-extern "C" JNIEXPORT jint JNICALL
-Java_com_google_android_filament_utils_AutomationEngine_nGetTestCount(JNIEnv*, jclass, jlong native) {
-    AutomationEngine* automation = (AutomationEngine*) native;
-    return (jint) automation->testCount();
-}
-
-extern "C" JNIEXPORT jint JNICALL
-Java_com_google_android_filament_utils_AutomationEngine_nGetCurrentTest(JNIEnv*, jclass, jlong native) {
-    AutomationEngine* automation = (AutomationEngine*) native;
-    return (jint) automation->currentTest();
-}
-
 extern "C" JNIEXPORT void JNICALL
 Java_com_google_android_filament_utils_AutomationEngine_nDestroy(JNIEnv*, jclass, jlong native) {
     AutomationEngine* automation = (AutomationEngine*) native;

android/filament-utils-android/src/main/cpp/ImageDiff.cpp

@@ -1,217 +0,0 @@
-/*
- * Copyright (C) 2026 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 <jni.h>
-#include <android/bitmap.h>
-
-#include <imagediff/ImageDiff.h>
-#include <utils/Log.h>
-
-#include <vector>
-
-using namespace imagediff;
-using namespace utils;
-
-namespace {
-
-struct BitmapLock {
-    JNIEnv* env;
-    jobject bitmap;
-    void* pixels;
-    AndroidBitmapInfo info;
-
-    BitmapLock(JNIEnv* env, jobject bitmap) : env(env), bitmap(bitmap), pixels(nullptr) {
-        if (!bitmap) return;
-        if (AndroidBitmap_getInfo(env, bitmap, &info) < 0) {
-            return;
-        }
-        if (AndroidBitmap_lockPixels(env, bitmap, &pixels) < 0) {
-            pixels = nullptr;
-        }
-    }
-
-    ~BitmapLock() {
-        if (pixels) {
-            AndroidBitmap_unlockPixels(env, bitmap);
-        }
-    }
-
-    bool isValid() const { return pixels != nullptr; }
-
-    imagediff::Bitmap toBitmap() const {
-        return {
-            .width = (uint32_t) info.width,
-            .height = (uint32_t) info.height,
-            .stride = (size_t) info.stride,
-            .data = pixels
-        };
-    }
-};
-
-} // namespace
-
-
-
-// Helper to convert C++ ImageDiffResult to Java Result
-jobject createResult(JNIEnv* env, ImageDiffResult const& result, bool generateDiff) {
-    // Create Result class/objects
-    jclass resultClass = env->FindClass("com/google/android/filament/utils/ImageDiff$Result");
-    jmethodID resultCtor = env->GetMethodID(resultClass, "<init>", "()V");
-    jobject resultObj = env->NewObject(resultClass, resultCtor);
-    jfieldID statusField = env->GetFieldID(resultClass, "status", "Lcom/google/android/filament/utils/ImageDiff$Result$Status;");
-    jfieldID failingCountField = env->GetFieldID(resultClass, "failingPixelCount", "J");
-    jfieldID maxDiffField = env->GetFieldID(resultClass, "maxDiffFound", "[F");
-    jfieldID diffImageField = env->GetFieldID(resultClass, "diffImage", "Landroid/graphics/Bitmap;");
-
-    // Map Status enum
-    jclass statusEnum = env->FindClass("com/google/android/filament/utils/ImageDiff$Result$Status");
-    jobject statusObj = nullptr;
-    jfieldID enumField = nullptr;
-    switch (result.status) {
-        case ImageDiffResult::Status::PASSED:
-            enumField = env->GetStaticFieldID(statusEnum, "PASSED", "Lcom/google/android/filament/utils/ImageDiff$Result$Status;");
-            break;
-        case ImageDiffResult::Status::SIZE_MISMATCH:
-             enumField = env->GetStaticFieldID(statusEnum, "SIZE_MISMATCH", "Lcom/google/android/filament/utils/ImageDiff$Result$Status;");
-            break;
-        case ImageDiffResult::Status::PIXEL_DIFFERENCE:
-             enumField = env->GetStaticFieldID(statusEnum, "PIXEL_DIFFERENCE", "Lcom/google/android/filament/utils/ImageDiff$Result$Status;");
-            break;
-    }
-    statusObj = env->GetStaticObjectField(statusEnum, enumField);
-    env->SetObjectField(resultObj, statusField, statusObj);
-
-    env->SetLongField(resultObj, failingCountField, (jlong) result.failingPixelCount);
-
-    jfloatArray maxDiffArray = env->NewFloatArray(4);
-    env->SetFloatArrayRegion(maxDiffArray, 0, 4, result.maxDiffFound);
-    env->SetObjectField(resultObj, maxDiffField, maxDiffArray);
-
-    if (generateDiff && result.diffImage.getWidth() > 0) {
-        jclass bitmapClass = env->FindClass("android/graphics/Bitmap");
-        jmethodID createBitmap = env->GetStaticMethodID(bitmapClass, "createBitmap", 
-            "(IILandroid/graphics/Bitmap$Config;)Landroid/graphics/Bitmap;");
-        
-        jclass configClass = env->FindClass("android/graphics/Bitmap$Config");
-        jfieldID argb8888 = env->GetStaticFieldID(configClass, "ARGB_8888", "Landroid/graphics/Bitmap$Config;");
-        jobject configObj = env->GetStaticObjectField(configClass, argb8888);
-
-        uint32_t width = result.diffImage.getWidth();
-        uint32_t height = result.diffImage.getHeight();
-        jobject diffBitmap = env->CallStaticObjectMethod(bitmapClass, createBitmap, (jint)width, (jint)height, configObj);
-        
-        if (diffBitmap) {
-            void* diffPixels;
-            if (AndroidBitmap_lockPixels(env, diffBitmap, &diffPixels) == 0) {
-                float const* src = result.diffImage.getPixelRef();
-                uint8_t* dst = (uint8_t*) diffPixels;
-                uint32_t channels = result.diffImage.getChannels(); // usually 4
-                
-                for (size_t i = 0; i < width * height; ++i) {
-                    for (int c = 0; c < 4; ++c) {
-                        float v = 0.0f;
-                        if (c < channels) v = src[i * channels + c];
-                        if (c == 3 && channels < 4) v = 1.0f; // Alpha 1.0 if missing
-                        dst[i * 4 + c] = (uint8_t) std::min(255.0f, std::max(0.0f, v * 255.0f));
-                    }
-                }
-                AndroidBitmap_unlockPixels(env, diffBitmap);
-                env->SetObjectField(resultObj, diffImageField, diffBitmap);
-            }
-        }
-    }
-    
-    return resultObj;
-}
-
-extern "C" JNIEXPORT jobject JNICALL
-Java_com_google_android_filament_utils_ImageDiff_nCompareBasic(JNIEnv* env, jclass,
-        jobject refBitmap, jobject candBitmap, jint mode, jint swizzle, jint channelMask,
-        jfloat maxAbsDiff, jfloat maxFailingPixelsFraction, jobject maskBitmap) {
-
-    BitmapLock refArg(env, refBitmap);
-    BitmapLock candArg(env, candBitmap);
-    BitmapLock maskArg(env, maskBitmap);
-
-    if (!refArg.isValid() || !candArg.isValid()) {
-         ImageDiffResult emptyResult; 
-         emptyResult.status = ImageDiffResult::Status::SIZE_MISMATCH; // or ERROR
-         return createResult(env, emptyResult, false);
-    }
-
-    ImageDiffConfig config;
-    config.mode = (ImageDiffConfig::Mode) mode;
-    config.swizzle = (ImageDiffConfig::Swizzle) swizzle;
-    config.channelMask = (uint8_t) channelMask;
-    config.maxAbsDiff = maxAbsDiff;
-    config.maxFailingPixelsFraction = maxFailingPixelsFraction;
-
-    imagediff::Bitmap const* maskPtr = nullptr;
-    imagediff::Bitmap maskVal;
-    if (maskBitmap && maskArg.isValid()) {
-         maskVal = maskArg.toBitmap();
-         maskPtr = &maskVal;
-    }
-
-    bool generateDiff = true;
-    ImageDiffResult result = compare(refArg.toBitmap(), candArg.toBitmap(), config, maskPtr, generateDiff);
-
-    return createResult(env, result, generateDiff);
-}
-
-extern "C" JNIEXPORT jobject JNICALL
-Java_com_google_android_filament_utils_ImageDiff_nCompareJson(JNIEnv* env, jclass,
-        jobject refBitmap, jobject candBitmap, jstring jsonConfig, jobject maskBitmap) {
-        
-    BitmapLock refArg(env, refBitmap);
-    BitmapLock candArg(env, candBitmap);
-    BitmapLock maskArg(env, maskBitmap);
-
-    if (!refArg.isValid() || !candArg.isValid()) {
-         ImageDiffResult emptyResult; 
-         emptyResult.status = ImageDiffResult::Status::SIZE_MISMATCH; // or ERROR
-         return createResult(env, emptyResult, false);
-    }
-
-    ImageDiffConfig config;
-    const char* nativeJson = env->GetStringUTFChars(jsonConfig, 0);
-    size_t length = env->GetStringUTFLength(jsonConfig);
-    
-    bool parsed = parseConfig(nativeJson, length, &config);
-    env->ReleaseStringUTFChars(jsonConfig, nativeJson);
-
-    if (!parsed) {
-        // Fallback to default or error?
-        // We could log error.
-        utils::slog.e << "ImageDiff JNI: Failed to parse JSON config" << utils::io::endl;
-        ImageDiffResult errResult;
-        errResult.status = ImageDiffResult::Status::PIXEL_DIFFERENCE; // assume fail
-        return createResult(env, errResult, false);
-    }
-
-    imagediff::Bitmap const* maskPtr = nullptr;
-    imagediff::Bitmap maskVal;
-    if (maskBitmap && maskArg.isValid()) {
-         maskVal = maskArg.toBitmap();
-         maskPtr = &maskVal;
-    }
-
-    bool generateDiff = true;
-    ImageDiffResult result = compare(refArg.toBitmap(), candArg.toBitmap(), config, maskPtr, generateDiff);
-
-    return createResult(env, result, generateDiff);
-}
-

android/filament-utils-android/src/main/java/com/google/android/filament/utils/AutomationEngine.java

@@ -94,23 +94,20 @@ public class AutomationEngine {
      * Allows remote control for the viewer.
      */
     public static class ViewerOptions {
+        public float cameraAperture = 16.0f;
+        public float cameraSpeed = 125.0f;
+        public float cameraISO = 100.0f;
+        public float cameraNear = 0.1f;
+        public float cameraFar = 100.0f;
         public float groundShadowStrength = 0.75f;
         public boolean groundPlaneEnabled = false;
         public boolean skyboxEnabled = true;
+        public float cameraFocalLength = 28.0f;
+        public float cameraFocusDistance = 0.0f;
         public boolean autoScaleEnabled = true;
         public boolean autoInstancingEnabled = false;
     }
 
-    public static class CameraSettings {
-        public float aperture = 16.0f;
-        public float shutterSpeed = 125.0f;
-        public float sensitivity = 100.0f;
-        public float near = 0.1f;
-        public float far = 100.0f;
-        public float focalLength = 28.0f;
-        public float focusDistance = 10.0f;
-    }
-
     /**
      * Creates an automation engine from a JSON specification.
      *
@@ -232,13 +229,6 @@ public class AutomationEngine {
         return result;
     }
 
-    @NonNull
-    public CameraSettings getCameraSettings() {
-        CameraSettings result = new CameraSettings();
-        nGetCameraSettings(mNativeObject, result);
-        return result;
-    }
-
     /**
      * Gets a color grading object that corresponds to the latest settings.
      *
@@ -271,9 +261,6 @@ public class AutomationEngine {
      */
     public boolean shouldClose() { return nShouldClose(mNativeObject); }
 
-    public int getTestCount() { return nGetTestCount(mNativeObject); }
-    public int getCurrentTest() { return nGetCurrentTest(mNativeObject); }
-
     @Override
     protected void finalize() throws Throwable {
         nDestroy(mNativeObject);
@@ -293,12 +280,9 @@ public class AutomationEngine {
             long[] materials, long ibl, int sunlight, int[] assetLights, long lightManager,
             long scene, long renderer);
     private static native void nGetViewerOptions(long nativeObject, Object result);
-    private static native void nGetCameraSettings(long nativeObject, Object result);
     private static native long nGetColorGrading(long nativeObject, long nativeEngine);
     private static native void nSignalBatchMode(long nativeObject);
     private static native void nStopRunning(long nativeObject);
     private static native boolean nShouldClose(long nativeObject);
-    private static native int nGetTestCount(long nativeObject);
-    private static native int nGetCurrentTest(long nativeObject);
     private static native void nDestroy(long nativeObject);
 }

android/filament-utils-android/src/main/java/com/google/android/filament/utils/ImageDiff.java

@@ -1,91 +0,0 @@
-/*
- * Copyright (C) 2026 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.
- */
-
-package com.google.android.filament.utils;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import android.graphics.Bitmap;
-
-public class ImageDiff {
-    public enum Mode {
-        LEAF, AND, OR
-    }
-
-    public enum Swizzle {
-        RGBA, BGRA
-    }
-
-    public static class Config {
-        @NonNull
-        public Mode mode = Mode.LEAF;
-        @NonNull
-        public Swizzle swizzle = Swizzle.RGBA;
-        public int channelMask = 0xF;
-        public float maxAbsDiff = 0.0f;
-        public float maxFailingPixelsFraction = 0.0f;
-        // Children not supported in this simple wrapper for now, can be added if needed
-    }
-
-    public static class Result {
-        public enum Status {
-            PASSED,
-            SIZE_MISMATCH,
-            PIXEL_DIFFERENCE
-        }
-
-        public Status status;
-        public long failingPixelCount;
-        public float[] maxDiffFound; // [R, G, B, A]
-        public Bitmap diffImage; // Null if not generated
-    }
-
-    /**
-     * Compares two bitmaps using a configuration object.
-     *
-     * @param reference Golden image
-     * @param candidate Actual image
-     * @param config    Comparison configuration
-     * @param mask      Optional mask (grayscale)
-     * @return Result of comparison
-     */
-    @NonNull
-    public static Result compareBasic(@NonNull Bitmap reference, @NonNull Bitmap candidate,
-            @NonNull Config config, @Nullable Bitmap mask) {
-        return nCompareBasic(reference, candidate, config.mode.ordinal(), config.swizzle.ordinal(),
-                config.channelMask, config.maxAbsDiff, config.maxFailingPixelsFraction, mask);
-    }
-
-    /**
-     * Compares two bitmaps using a JSON configuration string.
-     *
-     * @param reference Golden image
-     * @param candidate Actual image
-     * @param jsonConfig Comparison configuration in JSON format
-     * @param mask      Optional mask (grayscale)
-     * @return Result of comparison
-     */
-    @NonNull
-    public static Result compare(@NonNull Bitmap reference, @NonNull Bitmap candidate,
-            @NonNull String jsonConfig, @Nullable Bitmap mask) {
-        return nCompareJson(reference, candidate, jsonConfig, mask);
-    }
-
-    private static native Result nCompareBasic(Bitmap reference, Bitmap candidate, int mode, int swizzle,
-            int channelMask, float maxAbsDiff, float maxFailingPixelsFraction, Bitmap mask);
-
-    private static native Result nCompareJson(Bitmap reference, Bitmap candidate, String jsonConfig, Bitmap mask);
-}

android/filament-utils-android/src/main/java/com/google/android/filament/utils/ModelViewer.kt

@@ -16,9 +16,6 @@
 
 package com.google.android.filament.utils
 
-import android.graphics.Bitmap
-import android.os.Handler
-import android.os.Looper
 import android.view.MotionEvent
 import android.view.Surface
 import android.view.SurfaceView
@@ -29,7 +26,6 @@ import com.google.android.filament.android.UiHelper
 import com.google.android.filament.gltfio.*
 import kotlinx.coroutines.*
 import java.nio.Buffer
-import java.nio.ByteBuffer
 
 private const val kNearPlane = 0.05f     // 5 cm
 private const val kFarPlane = 1000.0f    // 1 km
@@ -123,8 +119,6 @@ class ModelViewer(
     private val target = DoubleArray(3)
     private val upward = DoubleArray(3)
 
-    private var debugFrameCallback: ((Bitmap) -> Unit)? = null
-
     init {
         renderer = engine.createRenderer()
         scene = engine.createScene()
@@ -311,39 +305,10 @@ class ModelViewer(
         // Render the scene, unless the renderer wants to skip the frame.
         if (renderer.beginFrame(swapChain!!, frameTimeNanos)) {
             renderer.render(view)
-
-            debugFrameCallback?.let {
-                val viewport = view.viewport
-                val bitmap = Bitmap.createBitmap(viewport.width, viewport.height,
-                        Bitmap.Config.ARGB_8888)
-                val buffer = ByteBuffer.allocateDirect(viewport.width * viewport.height * 4)
-
-                val handler = Handler(Looper.getMainLooper())
-                val pixelBufferDescriptor = Texture.PixelBufferDescriptor(buffer,
-                        Texture.Format.RGBA, Texture.Type.UBYTE, 1, 0, 0, 0, handler) {
-                    buffer.rewind()
-                    bitmap.copyPixelsFromBuffer(buffer)
-                    it(bitmap)
-                }
-                renderer.readPixels(viewport.left, viewport.bottom, viewport.width,
-                                    viewport.height, pixelBufferDescriptor)
-                debugFrameCallback = null
-            }
-
             renderer.endFrame()
         }
     }
 
-    /*
-     * Sets a callback that will be invoked with the next rendered frame as a Bitmap. Note that this
-     * is a one-time callback.
-     *
-     *  @param callback   callback to be invoked with a rendered frame as [Bitmap]
-     */
-    fun debugGetNextFrameCallback(callback: (Bitmap) -> Unit) {
-        debugFrameCallback = callback
-    }
-
     private fun populateScene(asset: FilamentAsset) {
         val rcm = engine.renderableManager
         var count = 0

android/filament-utils-android/src/main/java/com/google/android/filament/utils/TextureLoader.kt

@@ -40,21 +40,7 @@ fun loadTexture(engine: Engine, resources: Resources, resourceId: Int, type: Tex
     options.inPremultiplied = type == TextureType.COLOR
 
     val bitmap = BitmapFactory.decodeResource(resources, resourceId, options)
-    return buildTexture(engine, bitmap, type)
-}
 
-fun loadTexture(engine: Engine, bytes: ByteArray, type: TextureType, offset: Int = 0, length: Int = bytes.size): Texture {
-    val options = BitmapFactory.Options()
-    // Color is the only type of texture we want to pre-multiply with the alpha channel
-    // Pre-multiplication is the default behavior, so we need to turn it off here
-    options.inPremultiplied = type == TextureType.COLOR
-
-    val bitmap = BitmapFactory.decodeByteArray(bytes, offset, length, options)
-    return buildTexture(engine, bitmap, type)
-}
-
-
-private fun buildTexture(engine: Engine, bitmap: Bitmap, type: TextureType): Texture {
     val texture = Texture.Builder()
             .width(bitmap.width)
             .height(bitmap.height)

android/filament-utils-android/src/main/java/com/google/android/filament/utils/Utils.kt

@@ -22,7 +22,6 @@ object Utils {
     /**
      * Initializes the utils JNI layer. Must be called before using any utils functionality.
      */
-    @JvmStatic
     fun init() {
         // Load Filament first to ensure that the NioUtils Java class is available in the JNIEnv.
         Filament.init()

android/gltfio-android/CMakeLists.txt

@@ -6,7 +6,6 @@ option(FILAMENT_ENABLE_FGVIEWER "Enables Frame Graph Viewer" OFF)
 option(FILAMENT_ENABLE_MATDBG "Enables Material debugger" OFF)
 option(FILAMENT_DISABLE_MATOPT "Disables material optimizations" OFF)
 option(FILAMENT_SUPPORTS_WEBGPU "Enables WebGPU on Android" OFF)
-option(FILAMENT_SUPPORTS_WEBP_TEXTURES "Enable webp texture support on Android" OFF)
 
 set(CMAKE_CXX_STANDARD 20)
 
@@ -31,12 +30,6 @@ add_library(stb STATIC IMPORTED)
 set_target_properties(stb PROPERTIES IMPORTED_LOCATION
         ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libstb.a)
 
-if (FILAMENT_SUPPORTS_WEBP_TEXTURES)
-        add_library(webpdecoder STATIC IMPORTED)
-        set_target_properties(webpdecoder PROPERTIES IMPORTED_LOCATION
-                ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libwebpdecoder.a)
-endif()
-
 add_library(basis_transcoder STATIC IMPORTED)
 set_target_properties(basis_transcoder PROPERTIES IMPORTED_LOCATION
         ${FILAMENT_DIR}/lib/${ANDROID_ABI}/libbasis_transcoder.a)
@@ -88,10 +81,6 @@ set(GLTFIO_INCLUDE_DIRS
         ../../libs/ktxreader/include
 )
 
-if (FILAMENT_SUPPORTS_WEBP_TEXTURES)
-        list(APPEND GLTFIO_INCLUDE_DIRS ../../third_party/libwebp/src)
-endif()
-
 add_library(gltfio-jni SHARED ${GLTFIO_SRCS})
 
 target_compile_definitions(gltfio-jni PUBLIC GLTFIO_DRACO_SUPPORTED=1)
@@ -118,6 +107,3 @@ target_link_libraries(gltfio-jni
         PRIVATE perfetto        # needed only when FILAMENT_ENABLE_PERFETTO is defined
         PRIVATE log             # needed only when perfetto above is used
 )
-if (FILAMENT_SUPPORTS_WEBP_TEXTURES)
-        target_link_libraries(gltfio-jni PRIVATE webpdecoder)
-endif()

android/gltfio-android/src/main/cpp/ResourceLoader.cpp

@@ -128,18 +128,6 @@ Java_com_google_android_filament_gltfio_ResourceLoader_nCreateKtx2Provider(JNIEn
     return (jlong) createKtx2Provider(engine);
 }
 
-extern "C" JNIEXPORT jboolean JNICALL
-Java_com_google_android_filament_gltfio_ResourceLoader_nIsWebpSupported(JNIEnv*, jclass) {
-    return (jboolean) isWebpSupported();
-}
-
-extern "C" JNIEXPORT jlong JNICALL
-Java_com_google_android_filament_gltfio_ResourceLoader_nCreateWebpProvider(JNIEnv*, jclass,
-        jlong nativeEngine) {
-    Engine* engine = (Engine*) nativeEngine;
-    return (jlong) createWebpProvider(engine);
-}
-
 extern "C" JNIEXPORT void JNICALL
 Java_com_google_android_filament_gltfio_ResourceLoader_nDestroyTextureProvider(JNIEnv*, jclass,
         jlong nativeProvider) {

android/gltfio-android/src/main/java/com/google/android/filament/gltfio/ResourceLoader.java

@@ -37,7 +37,6 @@ public class ResourceLoader {
     private final long mNativeObject;
     private final long mNativeStbProvider;
     private final long mNativeKtx2Provider;
-    private final long mNativeWebpProvider;
 
     /**
      * Constructs a resource loader tied to the given Filament engine.
@@ -51,17 +50,9 @@ public class ResourceLoader {
         mNativeObject = nCreateResourceLoader(nativeEngine, false);
         mNativeStbProvider = nCreateStbProvider(nativeEngine);
         mNativeKtx2Provider = nCreateKtx2Provider(nativeEngine);
-
         nAddTextureProvider(mNativeObject, "image/jpeg", mNativeStbProvider);
         nAddTextureProvider(mNativeObject, "image/png", mNativeStbProvider);
         nAddTextureProvider(mNativeObject, "image/ktx2", mNativeKtx2Provider);
-        if (nIsWebpSupported()) {
-            mNativeWebpProvider = nCreateWebpProvider(nativeEngine);            
-            nAddTextureProvider(mNativeObject, "image/webp", mNativeWebpProvider);
-        }
-        else {
-            mNativeWebpProvider = 0;
-        }
     }
 
     /**
@@ -77,17 +68,9 @@ public class ResourceLoader {
         mNativeObject = nCreateResourceLoader(nativeEngine, normalizeSkinningWeights);
         mNativeStbProvider = nCreateStbProvider(nativeEngine);
         mNativeKtx2Provider = nCreateKtx2Provider(nativeEngine);
- 
         nAddTextureProvider(mNativeObject, "image/jpeg", mNativeStbProvider);
         nAddTextureProvider(mNativeObject, "image/png", mNativeStbProvider);
         nAddTextureProvider(mNativeObject, "image/ktx2", mNativeKtx2Provider);
-        if (nIsWebpSupported()) {
-            mNativeWebpProvider = nCreateWebpProvider(nativeEngine);            
-            nAddTextureProvider(mNativeObject, "image/webp", mNativeWebpProvider);
-        }
-        else {
-            mNativeWebpProvider = 0;
-        }
     }
 
     /**
@@ -97,9 +80,6 @@ public class ResourceLoader {
         nDestroyResourceLoader(mNativeObject);
         nDestroyTextureProvider(mNativeStbProvider);
         nDestroyTextureProvider(mNativeKtx2Provider);
-        if (nIsWebpSupported()) {       
-            nDestroyTextureProvider(mNativeWebpProvider);        
-        }
     }
 
     /**
@@ -211,9 +191,6 @@ public class ResourceLoader {
 
     private static native long nCreateStbProvider(long nativeEngine);
     private static native long nCreateKtx2Provider(long nativeEngine);
-    private static native boolean nIsWebpSupported();
-    private static native long nCreateWebpProvider(long nativeEngine);
-
     private static native void nAddTextureProvider(long nativeLoader, String url, long nativeProvider);
     private static native void nDestroyTextureProvider(long nativeProvider);
 }

android/gradle.properties

@@ -1,5 +1,5 @@
 GROUP=com.google.android.filament
-VERSION_NAME=1.69.2
+VERSION_NAME=1.65.2
 
 POM_DESCRIPTION=Real-time physically based rendering engine for Android.
 

android/samples/README.md

@@ -80,12 +80,54 @@ frame and the external texture are perfectly synchronized.
 
 ![Stream Test](../../docs/images/samples/sample_stream_test.jpg)
 
-## Building Samples
+## Prerequisites
 
 Before you start, make sure to read [Filament's README](../../README.md). You need to be able to
 compile Filament's native library and Filament's AAR for this project. The easiest way to proceed
 is to install all the required dependencies and to run the following commands at the root of the
-source tree.
+source tree:
 
-To build the samples, please follow the steps described in [BUILDING.md](../../BUILDING.md#android)
+```shell
+./build.sh -p desktop -i release
+./build.sh -p android release
+```
 
+This will build all the native components and the AAR required by this sample application.
+
+If you do not use the build script, you must set the `filament_tools_dir` property when invoking
+Gradle, either from the command line or from `local.properties`. This property must point to the
+distribution/install directory for desktop (produced by make/ninja install). This directory must
+contain `bin/matc` and `bin/cmgen`.
+
+Example:
+```shell
+./gradlew -Pfilament_tools_dir=../../dist-release assembleDebug
+```
+
+## Important: SDK location
+
+Either ensure your `ANDROID_HOME` environment variable is set or make sure the root project
+contains a `local.properties` file with the `sdk.dir` property pointing to your installation of
+the Android SDK.
+
+## Compiling
+
+### Android Studio
+
+You must use the latest stable release of Android Studio. To open the project, point Studio to the
+`android` folder. After opening the project and syncing to gradle, select the sample of your choice
+using the drop-down widget in the toolbar.
+
+To compile and run each sample make sure you have selected the appropriate build variant
+(arm7, arm8, x86 or x86_64). If you are not sure you can simply select the "universal"
+variant which includes all the other ones.
+
+### Command Line
+
+From the `android` directory in the project root:
+
+```shell
+./gradlew :samples:sample-hello-triangle:installDebug
+```
+
+Replace `sample-hello-triangle` with your preferred project.

android/samples/sample-gltf-viewer/build.gradle

@@ -17,20 +17,12 @@ filamentTools {
 }
 
 // don't forget to update MainACtivity.kt when/if changing this.
-tasks.register('copyDamagedHelmetGltf', Copy) {
-    from file("../../../third_party/models/DamagedHelmet/DamagedHelmet.glb")
-    into file("src/main/assets/models")
-    rename {String fileName -> "helmet.glb"}
-}
-
-// don't forget to update MainACtivity.kt when/if changing this.
-tasks.register('copyBusterGltf', Copy) {
+tasks.register('copyMesh', Copy) {
     from "../../../third_party/models/BusterDrone"
     into "src/main/assets/models"
 }
 
-preBuild.dependsOn copyDamagedHelmetGltf
-preBuild.dependsOn copyBusterGltf
+preBuild.dependsOn copyMesh
 
 clean.doFirst {
     delete "src/main/assets"

android/samples/sample-gltf-viewer/src/main/java/com/google/android/filament/gltf/MainActivity.kt

@@ -389,9 +389,9 @@ class MainActivity : Activity() {
         viewerContent.assetLights = modelViewer.asset?.lightEntities
         automation.applySettings(modelViewer.engine, json, viewerContent)
         modelViewer.view.colorGrading = automation.getColorGrading(modelViewer.engine)
-        modelViewer.cameraFocalLength = automation.cameraSettings.focalLength
-        modelViewer.cameraNear = automation.cameraSettings.near
-        modelViewer.cameraFar = automation.cameraSettings.far
+        modelViewer.cameraFocalLength = automation.viewerOptions.cameraFocalLength
+        modelViewer.cameraNear = automation.viewerOptions.cameraNear
+        modelViewer.cameraFar = automation.viewerOptions.cameraFar
         updateRootTransform()
     }
 

android/samples/sample-material-instance-stress/.gitignore

@@ -1,12 +0,0 @@
-*.iml
-.gradle
-/local.properties
-/.idea/workspace.xml
-/.idea/libraries
-/.idea/caches
-/.idea/gradle.xml
-.DS_Store
-/build
-/captures
-/src/main/assets
-.externalNativeBuild

android/samples/sample-material-instance-stress/build.gradle

@@ -1,52 +0,0 @@
-plugins {
-    id 'com.android.application'
-    id 'kotlin-android'
-    id 'filament-tools-plugin'
-}
-
-project.ext.isSample = true
-
-kotlin {
-    jvmToolchain(versions.jdk)
-}
-
-filamentTools {
-    materialInputDir = project.layout.projectDirectory.dir("src/main/materials")
-    materialOutputDir = project.layout.projectDirectory.dir("src/main/assets/materials")
-}
-
-clean.doFirst {
-    delete "src/main/assets"
-}
-android {
-    namespace 'com.google.android.filament.materialinstancestress'
-
-    compileSdkVersion versions.compileSdk
-    defaultConfig {
-        applicationId "com.google.android.filament.materialinstancestress"
-        minSdkVersion versions.minSdk
-        targetSdkVersion versions.targetSdk
-    }
-
-    // NOTE: This is a workaround required because the AGP task collectReleaseDependencies
-    //       is not configuration-cache friendly yet; this is only useful for Play publication
-    dependenciesInfo {
-        includeInApk = false
-    }
-
-    // We use the .filamat extension for materials compiled with matc
-    // Telling aapt to not compress them allows to load them efficiently
-    aaptOptions {
-        noCompress 'filamat', 'ktx'
-    }
-
-    compileOptions {
-        sourceCompatibility versions.jdk
-        targetCompatibility versions.jdk
-    }
-}
-
-dependencies {
-    implementation deps.kotlin
-    implementation project(':filament-android')
-}

android/samples/sample-material-instance-stress/src/main/AndroidManifest.xml

@@ -1,22 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android">
-
-  <application
-      android:allowBackup="true"
-      android:icon="@mipmap/ic_launcher"
-      android:label="@string/app_name"
-      android:roundIcon="@mipmap/ic_launcher_round"
-      android:supportsRtl="true"
-      android:theme="@style/AppTheme">
-    <activity
-        android:exported="true"
-        android:name=".MainActivity">
-      <intent-filter>
-        <action android:name="android.intent.action.MAIN"/>
-
-        <category android:name="android.intent.category.LAUNCHER"/>
-      </intent-filter>
-    </activity>
-  </application>
-
-</manifest>

android/samples/sample-material-instance-stress/src/main/java/com/google/android/filament/materialinstancestress/MainActivity.kt

@@ -1,532 +0,0 @@
-/*
- * Copyright (C) 2025 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.google.android.filament.materialinstancestress
-
-import android.animation.ValueAnimator
-import android.app.Activity
-import android.opengl.Matrix
-import android.os.Bundle
-import android.view.Choreographer
-import android.view.Surface
-import android.view.SurfaceView
-import android.view.animation.LinearInterpolator
-
-import com.google.android.filament.*
-import com.google.android.filament.RenderableManager.*
-import com.google.android.filament.VertexBuffer.*
-import com.google.android.filament.android.DisplayHelper
-import com.google.android.filament.android.FilamentHelper
-import com.google.android.filament.android.UiHelper
-
-import java.nio.ByteBuffer
-import java.nio.ByteOrder
-import java.nio.channels.Channels
-import kotlin.math.cos
-import kotlin.math.sin
-
-class MainActivity : Activity() {
-    // Make sure to initialize Filament first
-    // This loads the JNI library needed by most API calls
-    companion object {
-        init {
-            Filament.init()
-        }
-
-        private const val NUM_CUBES = 1000
-        private const val GRID_SIZE = 10
-        private const val SPACING = 2.5f
-    }
-
-    // The View we want to render into
-    private lateinit var surfaceView: SurfaceView
-    // UiHelper is provided by Filament to manage SurfaceView and SurfaceTexture
-    private lateinit var uiHelper: UiHelper
-    // DisplayHelper is provided by Filament to manage the display
-    private lateinit var displayHelper: DisplayHelper
-    // Choreographer is used to schedule new frames
-    private lateinit var choreographer: Choreographer
-
-    // Engine creates and destroys Filament resources
-    // Each engine must be accessed from a single thread of your choosing
-    // Resources cannot be shared across engines
-    private lateinit var engine: Engine
-    // A renderer instance is tied to a single surface (SurfaceView, TextureView, etc.)
-    private lateinit var renderer: Renderer
-    // A scene holds all the renderable, lights, etc. to be drawn
-    private lateinit var scene: Scene
-    // A view defines a viewport, a scene and a camera for rendering
-    private lateinit var view: View
-    // Should be pretty obvious :)
-    private lateinit var camera: Camera
-
-    private lateinit var material: Material
-    private lateinit var vertexBuffer: VertexBuffer
-    private lateinit var indexBuffer: IndexBuffer
-
-    // Filament entity representing a renderable object
-    @Entity private val renderables = IntArray(NUM_CUBES)
-    private val materialInstances = arrayOfNulls<MaterialInstance>(NUM_CUBES)
-    private val translationMatrices = Array(NUM_CUBES) { FloatArray(16) }
-
-    @Entity private var light = 0
-
-    // A swap chain is Filament's representation of a surface
-    private var swapChain: SwapChain? = null
-
-    private var cameraRadius = 42.7f // Initial distance (calculated from original 15Y, 40Z)
-    private var cameraTheta = 0.0f  // Azimuth (horizontal) in radians
-    private var cameraPhi = 0.358f  // Elevation (vertical) in radians (from original 15Y, 40Z)
-
-    private var mLastX = 0.0f
-    private var mLastY = 0.0f
-    private val DRAG_SPEED = 0.005f
-
-    // Performs the rendering and schedules new frames
-    private val frameScheduler = FrameCallback()
-
-    private val animator = ValueAnimator.ofFloat(0.0f, 360.0f)
-
-    private val animatorListener = object : ValueAnimator.AnimatorUpdateListener {
-        // Pre-allocate matrix to avoid GC churn
-        private val transformMatrix = FloatArray(16)
-
-        override fun onAnimationUpdate(a: ValueAnimator) {
-            val tcm = engine.transformManager
-            val time = a.animatedFraction // 0.0 to 1.0
-
-            // Calculate the sine wave scale factor.
-            // sin(time * 2 * PI) oscillates between -1.0 and 1.0.
-            // We multiply by 0.5f (so it's -0.5 to 0.5) and add 1.0f.
-            // This makes the final 'scale' oscillate between 0.5 and 1.5.
-            val scale = 1.0f + sin(time * 2.0 * Math.PI).toFloat() * 0.5f
-
-            val localScale = (scale - 0.5f) * 0.5f + 0.5f
-
-            for (i in 0 until NUM_CUBES) {
-                val inst = tcm.getInstance(renderables[i])
-                val materialInst = materialInstances[i] ?: continue
-
-                // Get the cube's base position from its stored matrix
-                // The translation is in elements 12 (x), 13 (y), and 14 (z)
-                val baseX = translationMatrices[i][12]
-                val baseY = translationMatrices[i][13]
-                val baseZ = translationMatrices[i][14]
-
-                // Set the transformMatrix to a new translation matrix,
-                // scaled from the center (0,0,0)
-                Matrix.setIdentityM(transformMatrix, 0)
-                Matrix.translateM(transformMatrix, 0,
-                        baseX * scale,
-                        baseY * scale,
-                        baseZ * scale)
-                Matrix.scaleM(transformMatrix, 0, localScale, localScale, localScale)
-
-                tcm.setTransform(inst, transformMatrix)
-
-                // Vary roughness
-                val roughness = 0.5f + 0.5f * sin(time * 2.0 * Math.PI + i * 0.1).toFloat()
-                materialInst.setParameter("roughness", roughness)
-
-                // Vary color (using linear RGB)
-                val r = 0.5f + 0.5f * cos(time * 2.0 * Math.PI + i * 0.5).toFloat()
-                val g = 0.5f + 0.5f * sin(time * 2.0 * Math.PI + i * 0.3).toFloat()
-                val b = 0.5f + 0.5f * cos(time * 2.0 * Math.PI + i * 0.1).toFloat()
-                materialInst.setParameter("baseColor", Colors.RgbType.LINEAR, r, g, b)
-            }
-        }
-    }
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-
-        surfaceView = SurfaceView(this)
-        setContentView(surfaceView)
-
-        surfaceView.setOnTouchListener(touchListener)
-        choreographer = Choreographer.getInstance()
-
-        displayHelper = DisplayHelper(this)
-
-        setupSurfaceView()
-        setupFilament()
-        setupView()
-        setupScene()
-    }
-
-    private fun setupSurfaceView() {
-        uiHelper = UiHelper(UiHelper.ContextErrorPolicy.DONT_CHECK)
-        uiHelper.renderCallback = SurfaceCallback()
-        uiHelper.attachTo(surfaceView)
-    }
-
-    private fun setupFilament() {
-        engine = Engine.create()
-        renderer = engine.createRenderer()
-        scene = engine.createScene()
-        view = engine.createView()
-        camera = engine.createCamera(engine.entityManager.create())
-    }
-
-    private fun setupView() {
-        scene.skybox = Skybox.Builder().color(0.035f, 0.035f, 0.035f, 1.0f).build(engine)
-        view.camera = camera
-        view.scene = scene
-    }
-
-    private fun setupScene() {
-        loadMaterial()
-        createMesh()
-
-        val tcm = engine.transformManager
-        val center = (GRID_SIZE - 1) * 0.5f
-
-        for (i in 0 until NUM_CUBES) {
-            // Calculate grid position
-            val x = (i % GRID_SIZE) - center
-            val y = ((i / GRID_SIZE) % GRID_SIZE) - center
-            val z = (i / (GRID_SIZE * GRID_SIZE)) - center
-
-            val posX = x * SPACING
-            val posY = y * SPACING
-            val posZ = z * SPACING
-
-            // Create material instance for this cube
-            materialInstances[i] = material.createInstance()
-
-            // Set initial parameters (will be overwritten by animator, but good practice)
-            materialInstances[i]?.setParameter("baseColor", Colors.RgbType.SRGB, 1.0f, 0.85f, 0.57f)
-            materialInstances[i]?.setParameter("metallic", 0.0f)
-            materialInstances[i]?.setParameter("roughness", 0.3f)
-
-            // Create the renderable entity
-            renderables[i] = EntityManager.get().create()
-
-            // Create the renderable component
-            RenderableManager.Builder(1)
-                .boundingBox(Box(0.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f))
-                .geometry(0, PrimitiveType.TRIANGLES, vertexBuffer, indexBuffer, 0, 6 * 6)
-                .material(0, materialInstances[i]!!)
-                .build(engine, renderables[i])
-
-            // Add to scene
-            scene.addEntity(renderables[i])
-
-            // Set its initial transform
-            // Store the base translation matrix
-            Matrix.setIdentityM(translationMatrices[i], 0)
-            Matrix.translateM(translationMatrices[i], 0, posX, posY, posZ)
-
-            // Get the transform component instance
-            val inst = tcm.getInstance(renderables[i])
-            tcm.setTransform(inst, translationMatrices[i])
-        }
-
-        // We now need a light, let's create a directional light
-        light = EntityManager.get().create()
-
-        val (r, g, b) = Colors.cct(5_500.0f)
-        LightManager.Builder(LightManager.Type.DIRECTIONAL)
-                .color(r, g, b)
-                .intensity(110_000.0f)
-                .direction(0.0f, -0.5f, -1.0f)
-                .castShadows(true)
-                .build(engine, light)
-
-        scene.addEntity(light)
-
-        camera.setExposure(16.0f, 1.0f / 125.0f, 100.0f)
-
-        updateCamera()
-
-        startAnimation()
-    }
-
-    private fun loadMaterial() {
-        readUncompressedAsset("materials/lit.filamat").let {
-            material = Material.Builder().payload(it, it.remaining()).build(engine)
-        }
-    }
-
-    private fun createMesh() {
-        val floatSize = 4
-        val shortSize = 2
-        val vertexSize = 3 * floatSize + 4 * floatSize
-
-        // A vertex is a position + a tangent frame:
-        // 3 floats for XYZ position, 4 floats for normal+tangents (quaternion)
-        @Suppress("ArrayInDataClass")
-        data class Vertex(val x: Float, val y: Float, val z: Float, val tangents: FloatArray)
-        fun ByteBuffer.put(v: Vertex): ByteBuffer {
-            putFloat(v.x)
-            putFloat(v.y)
-            putFloat(v.z)
-            v.tangents.forEach { putFloat(it) }
-            return this
-        }
-
-        // 6 faces, 4 vertices per face
-        val vertexCount = 6 * 4
-
-        // Create tangent frames, one per face
-        val tfPX = FloatArray(4)
-        val tfNX = FloatArray(4)
-        val tfPY = FloatArray(4)
-        val tfNY = FloatArray(4)
-        val tfPZ = FloatArray(4)
-        val tfNZ = FloatArray(4)
-
-        MathUtils.packTangentFrame( 0.0f,  1.0f, 0.0f, 0.0f, 0.0f, -1.0f,  1.0f,  0.0f,  0.0f, tfPX)
-        MathUtils.packTangentFrame( 0.0f,  1.0f, 0.0f, 0.0f, 0.0f, -1.0f, -1.0f,  0.0f,  0.0f, tfNX)
-        MathUtils.packTangentFrame(-1.0f,  0.0f, 0.0f, 0.0f, 0.0f, -1.0f,  0.0f,  1.0f,  0.0f, tfPY)
-        MathUtils.packTangentFrame(-1.0f,  0.0f, 0.0f, 0.0f, 0.0f,  1.0f,  0.0f, -1.0f,  0.0f, tfNY)
-        MathUtils.packTangentFrame( 0.0f,  1.0f, 0.0f, 1.0f, 0.0f,  0.0f,  0.0f,  0.0f,  1.0f, tfPZ)
-        MathUtils.packTangentFrame( 0.0f, -1.0f, 0.0f, 1.0f, 0.0f,  0.0f,  0.0f,  0.0f, -1.0f, tfNZ)
-
-        val vertexData = ByteBuffer.allocate(vertexCount * vertexSize)
-                // It is important to respect the native byte order
-                .order(ByteOrder.nativeOrder())
-                // Face -Z
-                .put(Vertex(-1.0f, -1.0f, -1.0f, tfNZ))
-                .put(Vertex(-1.0f,  1.0f, -1.0f, tfNZ))
-                .put(Vertex( 1.0f,  1.0f, -1.0f, tfNZ))
-                .put(Vertex( 1.0f, -1.0f, -1.0f, tfNZ))
-                // Face +X
-                .put(Vertex( 1.0f, -1.0f, -1.0f, tfPX))
-                .put(Vertex( 1.0f,  1.0f, -1.0f, tfPX))
-                .put(Vertex( 1.0f,  1.0f,  1.0f, tfPX))
-                .put(Vertex( 1.0f, -1.0f,  1.0f, tfPX))
-                // Face +Z
-                .put(Vertex(-1.0f, -1.0f,  1.0f, tfPZ))
-                .put(Vertex( 1.0f, -1.0f,  1.0f, tfPZ))
-                .put(Vertex( 1.0f,  1.0f,  1.0f, tfPZ))
-                .put(Vertex(-1.0f,  1.0f,  1.0f, tfPZ))
-                // Face -X
-                .put(Vertex(-1.0f, -1.0f,  1.0f, tfNX))
-                .put(Vertex(-1.0f,  1.0f,  1.0f, tfNX))
-                .put(Vertex(-1.0f,  1.0f, -1.0f, tfNX))
-                .put(Vertex(-1.0f, -1.0f, -1.0f, tfNX))
-                // Face -Y
-                .put(Vertex(-1.0f, -1.0f,  1.0f, tfNY))
-                .put(Vertex(-1.0f, -1.0f, -1.0f, tfNY))
-                .put(Vertex( 1.0f, -1.0f, -1.0f, tfNY))
-                .put(Vertex( 1.0f, -1.0f,  1.0f, tfNY))
-                // Face +Y
-                .put(Vertex(-1.0f,  1.0f, -1.0f, tfPY))
-                .put(Vertex(-1.0f,  1.0f,  1.0f, tfPY))
-                .put(Vertex( 1.0f,  1.0f,  1.0f, tfPY))
-                .put(Vertex( 1.0f,  1.0f, -1.0f, tfPY))
-                // Make sure the cursor is pointing in the right place in the byte buffer
-                .flip()
-
-        // Declare the layout of our mesh
-        vertexBuffer = VertexBuffer.Builder()
-                .bufferCount(1)
-                .vertexCount(vertexCount)
-                // Because we interleave position and color data we must specify offset and stride
-                // We could use de-interleaved data by declaring two buffers and giving each
-                // attribute a different buffer index
-                .attribute(VertexAttribute.POSITION, 0, AttributeType.FLOAT3, 0,             vertexSize)
-                .attribute(VertexAttribute.TANGENTS, 0, AttributeType.FLOAT4, 3 * floatSize, vertexSize)
-                .build(engine)
-
-        // Feed the vertex data to the mesh
-        // We only set 1 buffer because the data is interleaved
-        vertexBuffer.setBufferAt(engine, 0, vertexData)
-
-        // Create the indices
-        val indexData = ByteBuffer.allocate(6 * 2 * 3 * shortSize)
-                .order(ByteOrder.nativeOrder())
-        repeat(6) {
-            val i = (it * 4).toShort()
-            indexData
-                    .putShort(i).putShort((i + 1).toShort()).putShort((i + 2).toShort())
-                    .putShort(i).putShort((i + 2).toShort()).putShort((i + 3).toShort())
-        }
-        indexData.flip()
-
-        // 6 faces, 2 triangles per face,
-        indexBuffer = IndexBuffer.Builder()
-                .indexCount(vertexCount * 2)
-                .bufferType(IndexBuffer.Builder.IndexType.USHORT)
-                .build(engine)
-        indexBuffer.setBuffer(engine, indexData)
-    }
-
-    private fun updateCamera() {
-        // Calculate eye position from spherical coordinates
-        val eyeY = cameraRadius * sin(cameraPhi)
-        val horizontalRadius = cameraRadius * cos(cameraPhi)
-        val eyeX = horizontalRadius * sin(cameraTheta)
-        val eyeZ = horizontalRadius * cos(cameraTheta)
-
-        // Point the camera at the center (0,0,0)
-        camera.lookAt(eyeX.toDouble(), eyeY.toDouble(), eyeZ.toDouble(), // eye
-                0.0, 0.0, 0.0, // center
-                0.0, 1.0, 0.0) // up
-    }
-
-    private val touchListener = object : android.view.View.OnTouchListener {
-        override fun onTouch(v: android.view.View?, event: android.view.MotionEvent?): Boolean {
-            if (event == null) return false
-            when (event.action) {
-                android.view.MotionEvent.ACTION_DOWN -> {
-                    mLastX = event.x
-                    mLastY = event.y
-                    return true
-                }
-                android.view.MotionEvent.ACTION_MOVE -> {
-                    val dx = event.x - mLastX
-                    val dy = event.y - mLastY
-
-                    cameraTheta -= dx * DRAG_SPEED
-                    cameraPhi += dy * DRAG_SPEED
-
-                    // Clamp vertical angle to avoid flipping over
-                    cameraPhi = cameraPhi.coerceIn(-1.5f, 1.5f)
-
-                    updateCamera()
-
-                    mLastX = event.x
-                    mLastY = event.y
-                    return true
-                }
-            }
-            return v?.onTouchEvent(event) ?: false
-        }
-    }
-
-    private fun startAnimation() {
-        animator.interpolator = LinearInterpolator()
-        animator.duration = 6000
-        animator.repeatMode = ValueAnimator.RESTART
-        animator.repeatCount = ValueAnimator.INFINITE
-        animator.addUpdateListener(animatorListener)
-        animator.start()
-    }
-
-    override fun onResume() {
-        super.onResume()
-        choreographer.postFrameCallback(frameScheduler)
-        animator.start()
-    }
-
-    override fun onPause() {
-        super.onPause()
-        choreographer.removeFrameCallback(frameScheduler)
-        animator.cancel()
-    }
-
-    override fun onDestroy() {
-        super.onDestroy()
-
-        // Stop the animation and any pending frame
-        choreographer.removeFrameCallback(frameScheduler)
-        animator.cancel();
-
-        // Always detach the surface before destroying the engine
-        uiHelper.detach()
-
-        // Cleanup all resources
-        engine.destroyEntity(light)
-
-        // Destroy all 1000 entities and material instances
-        for (i in 0 until NUM_CUBES) {
-            engine.destroyEntity(renderables[i])
-            materialInstances[i]?.let { engine.destroyMaterialInstance(it) }
-        }
-
-        engine.destroyRenderer(renderer)
-        engine.destroyVertexBuffer(vertexBuffer)
-        engine.destroyIndexBuffer(indexBuffer)
-        engine.destroyMaterial(material)
-        engine.destroyView(view)
-        engine.destroyScene(scene)
-        engine.destroyCameraComponent(camera.entity)
-
-        // Engine.destroyEntity() destroys Filament related resources only
-        // (components), not the entity itself
-        val entityManager = EntityManager.get()
-        entityManager.destroy(light)
-        for (entity in renderables) {
-            entityManager.destroy(entity)
-        }
-        entityManager.destroy(camera.entity)
-
-        // Destroying the engine will free up any resource you may have forgotten
-        // to destroy, but it's recommended to do the cleanup properly
-        engine.destroy()
-    }
-
-    inner class FrameCallback : Choreographer.FrameCallback {
-        override fun doFrame(frameTimeNanos: Long) {
-            // Schedule the next frame
-            choreographer.postFrameCallback(this)
-
-            // This check guarantees that we have a swap chain
-            if (uiHelper.isReadyToRender) {
-                // If beginFrame() returns false you should skip the frame
-                // This means you are sending frames too quickly to the GPU
-                if (renderer.beginFrame(swapChain!!, frameTimeNanos)) {
-                    renderer.render(view)
-                    renderer.endFrame()
-                }
-            }
-        }
-    }
-
-    inner class SurfaceCallback : UiHelper.RendererCallback {
-        override fun onNativeWindowChanged(surface: Surface) {
-            swapChain?.let { engine.destroySwapChain(it) }
-            swapChain = engine.createSwapChain(surface)
-            displayHelper.attach(renderer, surfaceView.display)
-        }
-
-        override fun onDetachedFromSurface() {
-            displayHelper.detach()
-            swapChain?.let {
-                engine.destroySwapChain(it)
-                // Required to ensure we don't return before Filament is done executing the
-                // destroySwapChain command, otherwise Android might destroy the Surface
-                // too early
-                engine.flushAndWait()
-                swapChain = null
-            }
-        }
-
-        override fun onResized(width: Int, height: Int) {
-            val aspect = width.toDouble() / height.toDouble()
-            camera.setProjection(45.0, aspect, 0.1, 100.0, Camera.Fov.VERTICAL)
-
-            view.viewport = Viewport(0, 0, width, height)
-
-            FilamentHelper.synchronizePendingFrames(engine)
-        }
-    }
-
-    private fun readUncompressedAsset(assetName: String): ByteBuffer {
-        assets.openFd(assetName).use { fd ->
-            val input = fd.createInputStream()
-            val dst = ByteBuffer.allocate(fd.length.toInt())
-
-            val src = Channels.newChannel(input)
-            src.read(dst)
-            src.close()
-
-            return dst.apply { rewind() }
-        }
-    }
-}

android/samples/sample-material-instance-stress/src/main/materials/lit.mat

@@ -1,53 +0,0 @@
-// Simple lit material that defines 3 parameters:
-// - baseColor
-// - roughness
-// - metallic
-//
-// These parameters can be used by the application to change the appearance of the material.
-//
-// This source material must be compiled to a binary material using the matc tool.
-// The command used to compile this material is:
-// matc -p mobile -a opengl -o app/src/main/assets/lit.filamat app/src/materials/lit.mat
-//
-// See build.gradle for an example of how to compile materials automatically
-// Please refer to the documentation for more information about matc and the materials system.
-
-material {
-    name : lit,
-
-    // Dynamic lighting is enabled on this material
-    shadingModel : lit,
-
-    // We don't need to declare a "requires" array, lit materials
-    // always requires the "tangents" vertex attribute (the normal
-    // is required for lighting, tangent/bitangent for normal mapping
-    // and anisotropy)
-
-    // List of parameters exposed by this material
-    parameters : [
-        // The color must be passed in linear space, not sRGB
-        {
-            type : float3,
-            name : baseColor
-        },
-        {
-            type : float,
-            name : roughness
-        },
-        {
-            type : float,
-            name : metallic
-        }
-    ],
-}
-
-fragment {
-    void material(inout MaterialInputs material) {
-        prepareMaterial(material);
-
-        // Nothing fancy here, we simply copy the parameters
-        material.baseColor.rgb = materialParams.baseColor;
-        material.roughness = materialParams.roughness;
-        material.metallic = materialParams.metallic;
-    }
-}

android/samples/sample-material-instance-stress/src/main/res/drawable-v24/ic_launcher_foreground.xml

@@ -1,34 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:aapt="http://schemas.android.com/aapt"
-    android:width="108dp"
-    android:height="108dp"
-    android:viewportHeight="108"
-    android:viewportWidth="108">
-  <path
-      android:fillType="evenOdd"
-      android:pathData="M32,64C32,64 38.39,52.99 44.13,50.95C51.37,48.37 70.14,49.57 70.14,49.57L108.26,87.69L108,109.01L75.97,107.97L32,64Z"
-      android:strokeColor="#00000000"
-      android:strokeWidth="1">
-    <aapt:attr name="android:fillColor">
-      <gradient
-          android:endX="78.5885"
-          android:endY="90.9159"
-          android:startX="48.7653"
-          android:startY="61.0927"
-          android:type="linear">
-        <item
-            android:color="#44000000"
-            android:offset="0.0"/>
-        <item
-            android:color="#00000000"
-            android:offset="1.0"/>
-      </gradient>
-    </aapt:attr>
-  </path>
-  <path
-      android:fillColor="#FFFFFF"
-      android:fillType="nonZero"
-      android:pathData="M66.94,46.02L66.94,46.02C72.44,50.07 76,56.61 76,64L32,64C32,56.61 35.56,50.11 40.98,46.06L36.18,41.19C35.45,40.45 35.45,39.3 36.18,38.56C36.91,37.81 38.05,37.81 38.78,38.56L44.25,44.05C47.18,42.57 50.48,41.71 54,41.71C57.48,41.71 60.78,42.57 63.68,44.05L69.11,38.56C69.84,37.81 70.98,37.81 71.71,38.56C72.44,39.3 72.44,40.45 71.71,41.19L66.94,46.02ZM62.94,56.92C64.08,56.92 65,56.01 65,54.88C65,53.76 64.08,52.85 62.94,52.85C61.8,52.85 60.88,53.76 60.88,54.88C60.88,56.01 61.8,56.92 62.94,56.92ZM45.06,56.92C46.2,56.92 47.13,56.01 47.13,54.88C47.13,53.76 46.2,52.85 45.06,52.85C43.92,52.85 43,53.76 43,54.88C43,56.01 43.92,56.92 45.06,56.92Z"
-      android:strokeColor="#00000000"
-      android:strokeWidth="1"/>
-</vector>

android/samples/sample-material-instance-stress/src/main/res/drawable/ic_launcher_background.xml

@@ -1,171 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<vector
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="108dp"
-    android:height="108dp"
-    android:viewportHeight="108"
-    android:viewportWidth="108">
-  <path
-      android:fillColor="#26A69A"
-      android:pathData="M0,0h108v108h-108z"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M9,0L9,108"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M19,0L19,108"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M29,0L29,108"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M39,0L39,108"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M49,0L49,108"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M59,0L59,108"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M69,0L69,108"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M79,0L79,108"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M89,0L89,108"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M99,0L99,108"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M0,9L108,9"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M0,19L108,19"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M0,29L108,29"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M0,39L108,39"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M0,49L108,49"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M0,59L108,59"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M0,69L108,69"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M0,79L108,79"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M0,89L108,89"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M0,99L108,99"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M19,29L89,29"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M19,39L89,39"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M19,49L89,49"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M19,59L89,59"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M19,69L89,69"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M19,79L89,79"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M29,19L29,89"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M39,19L39,89"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M49,19L49,89"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M59,19L59,89"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M69,19L69,89"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-  <path
-      android:fillColor="#00000000"
-      android:pathData="M79,19L79,89"
-      android:strokeColor="#33FFFFFF"
-      android:strokeWidth="0.8"/>
-</vector>

android/samples/sample-material-instance-stress/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-  <background android:drawable="@drawable/ic_launcher_background"/>
-  <foreground android:drawable="@drawable/ic_launcher_foreground"/>
-</adaptive-icon>

android/samples/sample-material-instance-stress/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-  <background android:drawable="@drawable/ic_launcher_background"/>
-  <foreground android:drawable="@drawable/ic_launcher_foreground"/>
-</adaptive-icon>

android/samples/sample-material-instance-stress/src/main/res/values/colors.xml

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-  <color name="colorPrimary">#3F51B5</color>
-  <color name="colorPrimaryDark">#303F9F</color>
-  <color name="colorAccent">#FF4081</color>
-</resources>

android/samples/sample-material-instance-stress/src/main/res/values/strings.xml

@@ -1,3 +0,0 @@
-<resources>
-  <string name="app_name">Material Instance Stress</string>
-</resources>

android/samples/sample-material-instance-stress/src/main/res/values/styles.xml

@@ -1,8 +0,0 @@
-<resources>
-
-  <!-- Base application theme. -->
-  <style name="AppTheme" parent="android:Theme.Material.Light.DarkActionBar">
-    <!-- Customize your theme here. -->
-  </style>
-
-</resources>

android/samples/sample-render-validation/build.gradle

@@ -1,35 +0,0 @@
-plugins {
-    id 'com.android.application'
-    id 'kotlin-android'
-}
-
-project.ext.isSample = true
-
-kotlin {
-    jvmToolchain(versions.jdk)
-}
-
-android {
-    namespace 'com.google.android.filament.validation'
-
-    compileSdkVersion versions.compileSdk
-    defaultConfig {
-        applicationId "com.google.android.filament.validation"
-        minSdkVersion versions.minSdk
-        targetSdkVersion versions.targetSdk
-    }
-
-    compileOptions {
-        sourceCompatibility versions.jdk
-        targetCompatibility versions.jdk
-    }
-}
-
-dependencies {
-    implementation deps.kotlin
-    implementation deps.coroutines.core
-    implementation project(':filament-android')
-    implementation project(':gltfio-android')
-    implementation project(':filament-utils-android')
-    implementation project(':filament-utils-android')
-}

android/samples/sample-render-validation/src/main/AndroidManifest.xml

@@ -1,28 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android">
-
-    <uses-permission android:name="android.permission.INTERNET" />
-    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
-    <uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE" />
-
-    <application
-        android:allowBackup="true"
-        android:label="Filament Validation"
-        android:supportsRtl="true"
-        android:largeHeap="true"
-        android:requestLegacyExternalStorage="true"
-        android:theme="@android:style/Theme.NoTitleBar">
-        <activity
-            android:name=".MainActivity"
-            android:exported="true"
-            android:configChanges="orientation|screenSize|screenLayout|keyboardHidden"
-            android:screenOrientation="fullSensor">
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN" />
-                <category android:name="android.intent.category.LAUNCHER" />
-            </intent-filter>
-        </activity>
-    </application>
-
-</manifest>

android/samples/sample-render-validation/src/main/java/com/google/android/filament/validation/MainActivity.kt

@@ -1,154 +0,0 @@
-/*
- * Copyright (C) 2026 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.
- */
-
-package com.google.android.filament.validation
-
-import android.app.Activity
-import android.os.Bundle
-import android.util.Log
-import android.view.Choreographer
-import android.view.SurfaceView
-import android.view.WindowManager
-import android.widget.TextView
-import android.widget.Toast
-import com.google.android.filament.utils.ModelViewer
-import com.google.android.filament.utils.Utils
-import java.io.File
-
-class MainActivity : Activity(), ValidationRunner.Callback {
-
-    companion object {
-        init {
-            Utils.init()
-            System.loadLibrary("filament-utils-jni")
-        }
-        private const val TAG = "FilamentValidation"
-    }
-
-    private lateinit var surfaceView: SurfaceView
-    private lateinit var choreographer: Choreographer
-    private lateinit var modelViewer: ModelViewer
-    private lateinit var statusTextView: TextView
-    private var validationRunner: ValidationRunner? = null
-    
-    // Frame callback
-    private val frameScheduler = object : Choreographer.FrameCallback {
-        override fun doFrame(frameTimeNanos: Long) {
-            choreographer.postFrameCallback(this)
-            modelViewer.render(frameTimeNanos)
-            validationRunner?.onFrame(frameTimeNanos)
-        }
-    }
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        
-        // Simple layout
-        val layout = android.widget.FrameLayout(this)
-        surfaceView = SurfaceView(this)
-        layout.addView(surfaceView)
-        
-        statusTextView = TextView(this)
-        statusTextView.setTextColor(0xFFFFFFFF.toInt())
-        statusTextView.textSize = 16f
-        statusTextView.setPadding(20, 20, 20, 20)
-        statusTextView.text = "Initializing..."
-        layout.addView(statusTextView)
-        
-        setContentView(layout)
-        window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
-
-        choreographer = Choreographer.getInstance()
-        modelViewer = ModelViewer(surfaceView)
-        
-        // Check permissions? 
-        // We assume 'adb install -g' or permissions granted.
-        // But for scoped storage we might not need PERMISSION if reading from app-specific dirs, 
-        // but user mentioned /sdcard/ so we need MANAGE_EXTERNAL_STORAGE or READ_EXTERNAL_STORAGE.
-        // For waiting/simplicity, we just try.
-        
-        handleIntent()
-    }
-    
-    private fun handleIntent() {
-        val intent = intent
-        val testConfigPath = intent.getStringExtra("test_config")
-        
-        if (testConfigPath != null) {
-            startValidation(testConfigPath)
-        } else {
-             statusTextView.text = "No test_config provided via Intent.\nUse -e test_config <path>"
-             Log.w(TAG, "No test config provided")
-        }
-    }
-
-    private fun startValidation(configPath: String) {
-        try {
-            Log.i(TAG, "Parsing config from $configPath")
-            val config = ConfigParser.parseFromPath(configPath)
-            
-            val outputDir = File(getExternalFilesDir(null), "validation_results")
-            Log.i(TAG, "Output dir: ${outputDir.absolutePath}")
-            
-            validationRunner = ValidationRunner(this, modelViewer, config, outputDir)
-            validationRunner?.callback = this
-            validationRunner?.start()
-            
-        } catch (e: Exception) {
-            Log.e(TAG, "Failed to start validation", e)
-            statusTextView.text = "Error: ${e.message}"
-        }
-    }
-
-    override fun onResume() {
-        super.onResume()
-        choreographer.postFrameCallback(frameScheduler)
-    }
-
-    override fun onPause() {
-        super.onPause()
-        choreographer.removeFrameCallback(frameScheduler)
-    }
-
-    override fun onDestroy() {
-        super.onDestroy()
-        choreographer.removeFrameCallback(frameScheduler)
-    }
-
-    override fun onTestFinished(result: ValidationRunner.TestResult) {
-        runOnUiThread {
-            val status = "Test ${result.name} finished: ${if(result.passed) "PASS" else "FAIL"}"
-            statusTextView.text = status
-            Log.i(TAG, status)
-        }
-    }
-
-    override fun onAllTestsFinished() {
-        runOnUiThread {
-            statusTextView.text = "All tests finished!"
-            Log.i(TAG, "All tests finished")
-            // Optional: Auto-close activity?
-            // finish()
-        }
-    }
-
-    override fun onStatusChanged(status: String) {
-        runOnUiThread {
-            statusTextView.text = status
-        }
-    }
-}
-

android/samples/sample-render-validation/src/main/java/com/google/android/filament/validation/TestConfig.kt

@@ -1,166 +0,0 @@
-/*
- * Copyright (C) 2026 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.
- */
-
-package com.google.android.filament.validation
-
-import org.json.JSONArray
-import org.json.JSONObject
-import java.io.File
-import java.io.IOException
-
-data class RenderTestConfig(
-    val name: String,
-    val backends: List<String>,
-    val models: Map<String, String>, // name -> path
-    val tests: List<TestConfig>
-)
-
-data class TestConfig(
-    val name: String,
-    val description: String?,
-    val backends: List<String>,
-    val models: Set<String>,
-    val rendering: JSONObject,
-    val tolerance: JSONObject?
-)
-
-
-// See test/renderdiff/FORMAT.md for the full specification matched by this parser.
-class ConfigParser {
-    companion object {
-        fun parseFromPath(path: String): RenderTestConfig {
-            val file = File(path)
-            val jsonTxt = removeComments(file.readText())
-            val json = JSONObject(jsonTxt)
-            return parseRenderTestConfig(json, file.parentFile)
-        }
-
-        private fun removeComments(json: String): String {
-            return json.lines().joinToString("\n") { it.substringBefore("//") }
-        }
-
-        private fun parseRenderTestConfig(json: JSONObject, baseDir: File?): RenderTestConfig {
-            val name = json.getString("name")
-            val backends = json.getJSONArray("backends").toList<String>()
-            
-            val modelSearchPaths = json.optJSONArray("model_search_paths")?.toList<String>() ?: emptyList()
-            val models = mutableMapOf<String, String>()
-            
-            baseDir?.let { dir ->
-                modelSearchPaths.forEach { searchPath ->
-                    val searchDir = File(dir, searchPath)
-                    if (searchDir.exists()) {
-                        searchDir.walkTopDown().filter { it.isFile && (it.extension == "glb" || it.extension == "gltf") }.forEach { file ->
-                            models[file.nameWithoutExtension] = file.absolutePath
-                        }
-                    }
-                }
-            }
-
-            val presetsJson = json.optJSONArray("presets")
-            val presets = mutableMapOf<String, PresetConfig>()
-            if (presetsJson != null) {
-                for (i in 0 until presetsJson.length()) {
-                    val p = parsePreset(presetsJson.getJSONObject(i), models.keys)
-                    presets[p.name] = p
-                }
-            }
-
-            val testsJson = json.getJSONArray("tests")
-            val tests = mutableListOf<TestConfig>()
-            for (i in 0 until testsJson.length()) {
-                tests.add(parseTestConfig(testsJson.getJSONObject(i), models.keys, presets, backends))
-            }
-
-            return RenderTestConfig(name, backends, models, tests)
-        }
-
-        private fun parsePreset(json: JSONObject, existingModels: Set<String>): PresetConfig {
-            val name = json.getString("name")
-            val rendering = json.getJSONObject("rendering")
-            val models = json.optJSONArray("models")?.toList<String>() ?: emptyList()
-            
-            // Validate models
-            models.forEach { if (!existingModels.contains(it)) throw IllegalArgumentException("Model $it not found") }
-
-            val tolerance = json.optJSONObject("tolerance")
-            return PresetConfig(name, rendering, models, tolerance)
-        }
-
-        private fun parseTestConfig(
-            json: JSONObject, 
-            existingModels: Set<String>, 
-            presets: Map<String, PresetConfig>, 
-            defaultBackends: List<String>
-        ): TestConfig {
-            val name = json.getString("name")
-            val description = json.optString("description")
-            val backends = json.optJSONArray("backends")?.toList<String>() ?: defaultBackends
-            
-            val applyPresets = json.optJSONArray("apply_presets")?.toList<String>() ?: emptyList()
-            
-            val rendering = JSONObject()
-            val combinedModels = mutableSetOf<String>()
-            var lastTolerance: JSONObject? = null
-
-            applyPresets.forEach { presetName ->
-                val preset = presets[presetName] ?: throw IllegalArgumentException("Unknown preset $presetName")
-                // Merge rendering (flat copy)
-                val keys = preset.rendering.keys()
-                while(keys.hasNext()) {
-                    val k = keys.next()
-                    rendering.put(k, preset.rendering.get(k))
-                }
-                combinedModels.addAll(preset.models)
-                if (preset.tolerance != null) lastTolerance = preset.tolerance
-            }
-
-            val testRendering = json.optJSONObject("rendering")
-            if (testRendering != null) {
-                val keys = testRendering.keys()
-                while(keys.hasNext()) {
-                    val k = keys.next()
-                    rendering.put(k, testRendering.get(k))
-                }
-            }
-
-            val testModels = json.optJSONArray("models")?.toList<String>() ?: emptyList()
-            combinedModels.addAll(testModels)
-            
-             // Validate models
-            combinedModels.forEach { if (!existingModels.contains(it)) throw IllegalArgumentException("Model $it not found") }
-
-            val tolerance = json.optJSONObject("tolerance") ?: lastTolerance
-
-            return TestConfig(name, description, backends, combinedModels, rendering, tolerance)
-        }
-    }
-}
-
-data class PresetConfig(
-    val name: String,
-    val rendering: JSONObject,
-    val models: List<String>,
-    val tolerance: JSONObject?
-)
-
-private inline fun <reified T> JSONArray.toList(): List<T> {
-    val list = mutableListOf<T>()
-    for (i in 0 until length()) {
-        list.add(get(i) as T)
-    }
-    return list
-}

android/samples/sample-render-validation/src/main/java/com/google/android/filament/validation/ValidationRunner.kt

@@ -1,327 +0,0 @@
-/*
- * Copyright (C) 2026 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.
- */
-
-package com.google.android.filament.validation
-
-import android.content.Context
-import android.graphics.Bitmap
-import android.util.Log
-import com.google.android.filament.Engine
-import com.google.android.filament.Renderer
-import com.google.android.filament.View
-import com.google.android.filament.utils.AutomationEngine
-import com.google.android.filament.utils.ImageDiff
-import com.google.android.filament.utils.ModelViewer
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.withContext
-import org.json.JSONObject
-import java.io.File
-import java.io.FileOutputStream
-import java.nio.ByteBuffer
-import java.nio.ByteOrder
-
-class ValidationRunner(
-    private val context: Context,
-    private val modelViewer: ModelViewer,
-    private val config: RenderTestConfig,
-    private val outputDir: File
-) {
-
-    private var currentState = State.IDLE
-    private var currentTestIndex = 0
-    private var currentModelIndex = 0
-    private var currentEngine: AutomationEngine? = null
-    private var currentTestConfig: TestConfig? = null
-    private var currentModelName: String? = null
-    
-    private var loadStartFence: com.google.android.filament.Fence? = null
-    private var loadStartTime = 0L
-
-    enum class State {
-        IDLE,
-        LOADING_MODEL,
-        WAITING_FOR_FENCE,
-        RUNNING_TEST,
-        COMPARING
-    }
-
-    interface Callback {
-        fun onTestFinished(result: TestResult)
-        fun onAllTestsFinished()
-        fun onStatusChanged(status: String)
-    }
-
-    var callback: Callback? = null
-
-    fun start() {
-        if (config.tests.isEmpty()) {
-            callback?.onAllTestsFinished()
-            return
-        }
-        currentTestIndex = 0
-        currentModelIndex = 0
-        startTest(config.tests[0])
-    }
-
-    private fun startTest(test: TestConfig) {
-        currentTestConfig = test
-        if (test.models.isEmpty()) {
-            nextTest()
-            return
-        }
-        currentModelIndex = 0
-        startModel(test.models.elementAt(0))
-    }
-
-    private fun startModel(modelName: String) {
-        currentModelName = modelName
-        val modelPath = config.models[modelName]
-        if (modelPath == null) {
-            Log.e("ValidationRunner", "Model $modelName not found")
-            nextModel()
-            return
-        }
-        
-        currentState = State.LOADING_MODEL
-        callback?.onStatusChanged("Loading $modelName for ${currentTestConfig?.name}")
-        
-        // Load model on main thread (required by ModelViewer)
-        // We assume this is called from main thread or we dispatch
-        loadModel(modelPath)
-    }
-
-    private fun loadModel(path: String) {
-        // Assume called on Main Thread
-        modelViewer.destroyModel()
-        try {
-            val bytes = File(path).readBytes()
-            val buffer = ByteBuffer.wrap(bytes)
-            modelViewer.loadModelGlb(buffer)
-            modelViewer.transformToUnitCube()
-            loadStartFence = modelViewer.engine.createFence()
-            loadStartTime = System.nanoTime()
-            currentState = State.WAITING_FOR_FENCE
-        } catch (e: Exception) {
-             Log.e("ValidationRunner", "Failed to load $path", e)
-             nextModel()
-        }
-    }
-
-    fun onFrame(frameTimeNanos: Long) {
-        when (currentState) {
-            State.IDLE -> {}
-            State.WAITING_FOR_FENCE -> {
-                loadStartFence?.let { fence ->
-                     if (fence.wait(com.google.android.filament.Fence.Mode.FLUSH, 0) == com.google.android.filament.Fence.FenceStatus.CONDITION_SATISFIED) {
-                         modelViewer.engine.destroyFence(fence)
-                         loadStartFence = null
-                         
-                         // Compile materials (simplified)
-                         modelViewer.scene.forEach { entity ->
-                             // ... existing material compilation logic ...
-                         }
-                         
-                         startAutomation()
-                     }
-                }
-            }
-            State.RUNNING_TEST -> {
-                currentEngine?.let { engine ->
-                    val content = AutomationEngine.ViewerContent()
-                    content.view = modelViewer.view
-                    content.renderer = modelViewer.renderer
-                    content.scene = modelViewer.scene
-                    content.lightManager = modelViewer.engine.lightManager
-                    
-                    // Tick
-                    // Delta time? 
-                    val deltaTime = 1.0f / 60.0f // Fixed step for consistency?
-                    engine.tick(modelViewer.engine, content, deltaTime)
-                    
-                    if (!engine.isRunning) {
-                        // Test finished (for this spec)
-                        currentState = State.COMPARING
-                        captureAndCompare()
-                    }
-                }
-            }
-            State.COMPARING -> {} // Busy
-            State.LOADING_MODEL -> {}
-        }
-    }
-
-    private fun startAutomation() {
-        val test = currentTestConfig!!
-        val specJson = JSONObject()
-        specJson.put("name", test.name)
-        specJson.put("base", test.rendering)
-        val fullSpec = "[${specJson.toString()}]"
-
-        currentEngine = AutomationEngine(fullSpec)
-        val options = AutomationEngine.Options()
-        options.sleepDuration = 0.0f // Minimal sleep, let frames drive it
-        options.minFrameCount = 5 // Ensure some frames pass
-        currentEngine?.setOptions(options)
-        currentEngine?.startRunning()
-        currentState = State.RUNNING_TEST
-    }
-
-
-    private fun captureAndCompare() {
-        callback?.onStatusChanged("Comparing ${currentTestConfig?.name}...")
-        val view = modelViewer.view
-        val renderer = modelViewer.renderer
-        val width = view.viewport.width
-        val height = view.viewport.height
-
-        val buffer = ByteBuffer.allocateDirect(width * height * 4)
-        
-        val pbd = com.google.android.filament.Texture.PixelBufferDescriptor(
-            buffer,
-            com.google.android.filament.Texture.Format.RGBA,
-            com.google.android.filament.Texture.Type.UBYTE,
-            1, 0, 0, 0, 0, // alignment, left, top, stride (0=default)
-            null // handler (null = current thread? no, handler is for callback)
-        ) {
-            // Callback when readPixels is done
-            // Dispatch to background thread for comparison to avoid blocking UI?
-            // "it" is undefined here? The callback interface is Runnable?
-            // Kotlin lambda for Runnable.
-            compareCapturedImage(buffer, width, height)
-        }
-        renderer.readPixels(0, 0, width, height, pbd)
-    }
-
-    private fun compareCapturedImage(buffer: java.nio.Buffer, width: Int, height: Int) {
-         // This runs on... which thread? Filament driver thread possibly.
-         // We should use a helper to process.
-         
-         val testName = currentTestConfig!!.name
-         val modelName = currentModelName!!
-         val backend = "opengl" // Hardcoded for now, or get from View/Engine?
-         val testFullName = "${testName}.${backend}.${modelName}"
-         
-         // Golden path
-         // We expect a golden directory.
-         val goldenFile = File(config.models.get(modelName)!!).parentFile.parentFile.resolve("golden/${testFullName}.png") 
-         // Strategy: models are in .../models/model.glb
-         // Goldens are in .../golden/
-         
-         Thread {
-             try {
-                // Convert buffer to Bitmap
-                val bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888)
-                bitmap.copyPixelsFromBuffer(buffer)
-                
-                // Flip Y? ReadPixels is typically bottom-up?
-                // Filament readPixels is bottom-left? YES.
-                // Bitmap is top-left.
-                // We need to flip.
-                val matrix = android.graphics.Matrix()
-                matrix.postScale(1f, -1f)
-                val flipped = Bitmap.createBitmap(bitmap, 0, 0, width, height, matrix, true)
-                
-                var passed = false
-                if (goldenFile.exists()) {
-                    val golden = android.graphics.BitmapFactory.decodeFile(goldenFile.absolutePath)
-                    if (golden != null) {
-                        // Populate tolerance from config
-                        val tol = currentTestConfig?.tolerance ?: org.json.JSONObject()
-                        val tolJson = tol.toString()
-                        
-                        val result = ImageDiff.compare(golden, flipped, tolJson, null)
-                        passed = (result.status == ImageDiff.Result.Status.PASSED)
-                        
-                        // Save diff if failed?
-                         if (!passed) {
-                            val diffFile = File(outputDir, "${testFullName}_diff.png")
-                            if (result.diffImage != null) {
-                                FileOutputStream(diffFile).use { out ->
-                                    result.diffImage.compress(Bitmap.CompressFormat.PNG, 100, out)
-                                }
-                            }
-                         }
-                    } else {
-                        Log.e("ValidationRunner", "Failed to load golden: ${goldenFile.absolutePath}")
-                    }
-                } else {
-                    Log.w("ValidationRunner", "Golden not found: ${goldenFile.absolutePath}")
-                }
-                
-                // Save output
-                val outFile = File(outputDir, "${testFullName}.png")
-                FileOutputStream(outFile).use { out ->
-                    flipped.compress(Bitmap.CompressFormat.PNG, 100, out)
-                }
-
-                callback?.onTestFinished(TestResult(testFullName, passed))
-                
-                // Schedule next model on main thread
-                // Use Handler or View.post
-                modelViewer.view.viewport
-                // dispatch nextModel()
-                android.os.Handler(android.os.Looper.getMainLooper()).post {
-                    nextModel()
-                }
-
-             } catch (e: Exception) {
-                 Log.e("ValidationRunner", "Comparison failed", e)
-                 android.os.Handler(android.os.Looper.getMainLooper()).post { nextModel() }
-             }
-         }.start()
-    }
-
-    private fun nextModel() {
-        currentModelIndex++
-        if (currentTestConfig != null && currentModelIndex < currentTestConfig!!.models.size) {
-            startModel(currentTestConfig!!.models.elementAt(currentModelIndex))
-        } else {
-            nextTest()
-        }
-    }
-
-
-    private fun nextTest() {
-        currentTestIndex++
-        if (currentTestIndex < config.tests.size) {
-            startTest(config.tests[currentTestIndex])
-        } else {
-            currentState = State.IDLE
-            zipResults()
-            callback?.onAllTestsFinished()
-        }
-    }
-
-    private fun zipResults() {
-        callback?.onStatusChanged("Zipping results...")
-        val zipFile = File(outputDir, "results.zip")
-        try {
-            java.util.zip.ZipOutputStream(java.io.FileOutputStream(zipFile)).use { zos ->
-                outputDir.walkTopDown().filter { it.isFile && it.name != "results.zip" }.forEach { file ->
-                    val entryName = file.relativeTo(outputDir).path
-                    zos.putNextEntry(java.util.zip.ZipEntry(entryName))
-                    file.inputStream().use { it.copyTo(zos) }
-                    zos.closeEntry()
-                }
-            }
-            Log.i("ValidationRunner", "Zipped results to ${zipFile.absolutePath}")
-        } catch (e: Exception) {
-            Log.e("ValidationRunner", "Failed to zip results", e)
-        }
-    }
-
-    data class TestResult(val name: String, val passed: Boolean)
-

android/samples/sample-texture-target/.gitignore

@@ -1,12 +0,0 @@
-*.iml
-.gradle
-/local.properties
-/.idea/workspace.xml
-/.idea/libraries
-/.idea/caches
-/.idea/gradle.xml
-.DS_Store
-/build
-/captures
-/src/main/assets
-.externalNativeBuild

android/samples/sample-texture-target/build.gradle

@@ -1,53 +0,0 @@
-plugins {
-    id 'com.android.application'
-    id 'kotlin-android'
-    id 'filament-tools-plugin'
-}
-
-project.ext.isSample = true
-
-kotlin {
-    jvmToolchain(versions.jdk)
-}
-
-filamentTools {
-    materialInputDir = project.layout.projectDirectory.dir("src/main/materials")
-    materialOutputDir = project.layout.projectDirectory.dir("src/main/assets/materials")
-}
-
-clean.doFirst {
-    delete "src/main/assets"
-}
-
-android {
-    namespace 'com.google.android.filament.texturetarget'
-
-    compileSdkVersion versions.compileSdk
-    defaultConfig {
-        applicationId "com.google.android.filament.texturetarget"
-        minSdkVersion 26
-        targetSdkVersion versions.targetSdk
-    }
-
-    // NOTE: This is a workaround required because the AGP task collectReleaseDependencies
-    //       is not configuration-cache friendly yet; this is only useful for Play publication
-    dependenciesInfo {
-        includeInApk = false
-    }
-
-    // We use the .filamat extension for materials compiled with matc
-    // Telling aapt to not compress them allows to load them efficiently
-    aaptOptions {
-        noCompress 'filamat', 'ktx'
-    }
-
-    compileOptions {
-        sourceCompatibility versions.jdk
-        targetCompatibility versions.jdk
-    }
-}
-
-dependencies {
-    implementation deps.kotlin
-    implementation project(':filament-android')
-}

android/samples/sample-texture-target/src/main/AndroidManifest.xml

@@ -1,22 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android">
-
-  <application
-      android:allowBackup="true"
-      android:icon="@mipmap/ic_launcher"
-      android:label="@string/app_name"
-      android:roundIcon="@mipmap/ic_launcher_round"
-      android:supportsRtl="true"
-      android:theme="@style/AppTheme">
-    <activity
-        android:exported="true"
-        android:name=".MainActivity">
-      <intent-filter>
-        <action android:name="android.intent.action.MAIN"/>
-
-        <category android:name="android.intent.category.LAUNCHER"/>
-      </intent-filter>
-    </activity>
-  </application>
-
-</manifest>

android/samples/sample-texture-target/src/main/java/com/google/android/filament/texturetarget/MainActivity.kt

@@ -1,449 +0,0 @@
-/*
- * Copyright (C) 2024 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.google.android.filament.texturetarget
-
-import android.animation.ValueAnimator
-import android.app.Activity
-import android.hardware.HardwareBuffer
-import android.opengl.Matrix
-import android.os.Bundle
-import android.view.Choreographer
-import android.view.Surface
-import android.view.SurfaceView
-import android.view.animation.LinearInterpolator
-import com.google.android.filament.*
-import com.google.android.filament.RenderableManager.PrimitiveType
-import com.google.android.filament.VertexBuffer.AttributeType
-import com.google.android.filament.VertexBuffer.VertexAttribute
-import com.google.android.filament.android.DisplayHelper
-import com.google.android.filament.android.FilamentHelper
-import com.google.android.filament.android.UiHelper
-import java.nio.ByteBuffer
-import java.nio.ByteOrder
-import java.nio.channels.Channels
-import kotlin.math.PI
-import kotlin.math.cos
-import kotlin.math.sin
-
-class MainActivity : Activity() {
-    companion object {
-        init {
-            Filament.init()
-        }
-    }
-
-    private lateinit var surfaceView: SurfaceView
-    private lateinit var uiHelper: UiHelper
-    private lateinit var displayHelper: DisplayHelper
-    private lateinit var choreographer: Choreographer
-
-    private lateinit var engine: Engine
-    private lateinit var renderer: Renderer
-    private lateinit var scene: Scene
-    private lateinit var view: View
-    private lateinit var camera: Camera
-
-    private lateinit var triangleMaterial: Material
-    private lateinit var texturedMaterial: Material
-    private lateinit var triangleVertexBuffer: VertexBuffer
-    private lateinit var triangleIndexBuffer: IndexBuffer
-    private lateinit var quadVertexBuffer: VertexBuffer
-    private lateinit var quadIndexBuffer: IndexBuffer
-
-    @Entity private var triangleRenderable = 0
-    @Entity private var quadRenderable = 0
-
-    private var swapChain: SwapChain? = null
-
-    private val frameScheduler = FrameCallback()
-    private val animator = ValueAnimator.ofFloat(0.0f, 360.0f)
-
-    private var hardwareBuffer: HardwareBuffer? = null
-    private var texture: Texture? = null
-    private var renderTarget: RenderTarget? = null
-
-    private var useExternalTexture = true
-
-    private lateinit var offscreenView: View
-    private lateinit var offscreenCamera: Camera
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        // To use set this flag with adb, run
-        // adb shell am start -n com.google.android.filament.texturetarget/.MainActivity --ez useExternalTexture false
-        useExternalTexture = intent.getBooleanExtra("useExternalTexture", true)
-        surfaceView = SurfaceView(this)
-        setContentView(surfaceView)
-        choreographer = Choreographer.getInstance()
-        displayHelper = DisplayHelper(this)
-        setupSurfaceView()
-        setupFilament()
-        setupView()
-        setupScene()
-    }
-
-    private fun setupSurfaceView() {
-        uiHelper = UiHelper(UiHelper.ContextErrorPolicy.DONT_CHECK)
-        uiHelper.renderCallback = SurfaceCallback()
-        uiHelper.attachTo(surfaceView)
-    }
-
-    private fun setupFilament() {
-        engine = Engine.create()
-        renderer = engine.createRenderer()
-        scene = engine.createScene()
-        view = engine.createView()
-        camera = engine.createCamera(engine.entityManager.create())
-        offscreenView = engine.createView()
-        offscreenCamera = engine.createCamera(engine.entityManager.create())
-    }
-
-    private fun setupView() {
-        scene.skybox = Skybox.Builder()
-            .priority(0)
-            .color(0.0f, 0.0f, 1.0f, 1.0f).build(engine)
-
-        // This is the view that will be drawn on screen.
-        view.camera = camera
-        view.scene = scene
-        view.isPostProcessingEnabled = false
-
-        // This is the view that will be rendered off-screen.
-        offscreenView.camera = offscreenCamera
-        offscreenView.scene = scene
-        offscreenView.isPostProcessingEnabled = false
-    }
-
-    private fun setupScene() {
-        loadMaterials()
-        createTriangleMesh()
-        createQuadMesh()
-
-        // layer 1: skybox
-        // layer 2: triangle
-        // layer 3: quad
-
-        triangleMaterial.defaultInstance.cullingMode = Material.CullingMode.NONE;
-        texturedMaterial.defaultInstance.cullingMode = Material.CullingMode.NONE;
-
-        // The triangle is a regular renderable.
-        triangleRenderable = EntityManager.get().create()
-        RenderableManager.Builder(1)
-            .geometry(0, PrimitiveType.TRIANGLES, triangleVertexBuffer, triangleIndexBuffer, 0, 3)
-            .material(0, triangleMaterial.defaultInstance)
-            .culling(false)
-            .castShadows(false)
-            .receiveShadows(false)
-            .layerMask(7, 2)
-            .build(engine, triangleRenderable)
-
-        // The quad is a regular renderable.
-        quadRenderable = EntityManager.get().create()
-        RenderableManager.Builder(1)
-            .geometry(0, PrimitiveType.TRIANGLES, quadVertexBuffer, quadIndexBuffer, 0, 6)
-            .material(0, texturedMaterial.defaultInstance)
-            .culling(false)
-            .castShadows(false)
-            .receiveShadows(false)
-            .layerMask(7, 4)
-            .build(engine, quadRenderable)
-
-        // We only want to render the triangle in the offscreen view.
-        offscreenView.setVisibleLayers(7, 3)    // render skybox + triangle
-
-        // We only want to render the quad in the on-screen view.
-        view.setVisibleLayers(7, 4)             // render quad only
-
-        scene.addEntity(triangleRenderable)
-        scene.addEntity(quadRenderable)
-
-        startAnimation()
-    }
-
-    private fun loadMaterials() {
-        readUncompressedAsset("materials/baked_color.filamat").let {
-            triangleMaterial = Material.Builder().payload(it, it.remaining()).build(engine)
-        }
-
-        if (useExternalTexture) {
-            readUncompressedAsset("materials/texturedExternal.filamat").let {
-                texturedMaterial = Material.Builder().payload(it, it.remaining()).build(engine)
-            }
-        } else {
-            readUncompressedAsset("materials/textured.filamat").let {
-                texturedMaterial = Material.Builder().payload(it, it.remaining()).build(engine)
-            }
-        }
-    }
-
-    private fun createTriangleMesh() {
-        val intSize = 4
-        val floatSize = 4
-        val shortSize = 2
-        val vertexSize = 3 * floatSize + intSize
-
-        data class Vertex(val x: Float, val y: Float, val z: Float, val color: Int)
-        fun ByteBuffer.put(v: Vertex): ByteBuffer {
-            putFloat(v.x)
-            putFloat(v.y)
-            putFloat(v.z)
-            putInt(v.color)
-            return this
-        }
-
-        val vertexCount = 3
-        val a1 = PI * 2.0 / 3.0
-        val a2 = PI * 4.0 / 3.0
-
-        val vertexData = ByteBuffer.allocate(vertexCount * vertexSize)
-            .order(ByteOrder.nativeOrder())
-            .put(Vertex(1.0f, 0.0f, 0.0f, 0xffff0000.toInt()))
-            .put(Vertex(cos(a1).toFloat(), sin(a1).toFloat(), 0.0f, 0xff00ff00.toInt()))
-            .put(Vertex(cos(a2).toFloat(), sin(a2).toFloat(), 0.0f, 0xff0000ff.toInt()))
-            .flip()
-
-        triangleVertexBuffer = VertexBuffer.Builder()
-            .bufferCount(1)
-            .vertexCount(vertexCount)
-            .attribute(VertexAttribute.POSITION, 0, AttributeType.FLOAT3, 0, vertexSize)
-            .attribute(VertexAttribute.COLOR, 0, AttributeType.UBYTE4, 3 * floatSize, vertexSize)
-            .normalized(VertexAttribute.COLOR)
-            .build(engine)
-        triangleVertexBuffer.setBufferAt(engine, 0, vertexData)
-
-        val indexData = ByteBuffer.allocate(vertexCount * shortSize)
-            .order(ByteOrder.nativeOrder())
-            .putShort(0)
-            .putShort(1)
-            .putShort(2)
-            .flip()
-
-        triangleIndexBuffer = IndexBuffer.Builder()
-            .indexCount(3)
-            .bufferType(IndexBuffer.Builder.IndexType.USHORT)
-            .build(engine)
-        triangleIndexBuffer.setBuffer(engine, indexData)
-    }
-
-    private fun createQuadMesh() {
-        val floatSize = 4
-        val shortSize = 2
-        val vertexSize = (2 * floatSize) + (2 * floatSize) // position + UV
-
-        data class Vertex(val x: Float, val y: Float, val u: Float, val v: Float)
-        fun ByteBuffer.put(v: Vertex): ByteBuffer {
-            putFloat(v.x)
-            putFloat(v.y)
-            putFloat(v.u)
-            putFloat(v.v)
-            return this
-        }
-
-        val vertexCount = 4
-        val vertexData = ByteBuffer.allocate(vertexCount * vertexSize)
-            .order(ByteOrder.nativeOrder())
-            .put(Vertex(-1.0f, -1.0f, 0.0f, 0.0f))
-            .put(Vertex( 1.0f, -1.0f, 1.0f, 0.0f))
-            .put(Vertex( 1.0f,  1.0f, 1.0f, 1.0f))
-            .put(Vertex(-1.0f,  1.0f, 0.0f, 1.0f))
-            .flip()
-
-        quadVertexBuffer = VertexBuffer.Builder()
-            .bufferCount(1)
-            .vertexCount(vertexCount)
-            .attribute(VertexAttribute.POSITION, 0, AttributeType.FLOAT2, 0, vertexSize)
-            .attribute(VertexAttribute.UV0, 0, AttributeType.FLOAT2, 2 * floatSize, vertexSize)
-            .build(engine)
-        quadVertexBuffer.setBufferAt(engine, 0, vertexData)
-
-        val indexData = ByteBuffer.allocate(6 * shortSize)
-            .order(ByteOrder.nativeOrder())
-            .putShort(0).putShort(1).putShort(2)
-            .putShort(0).putShort(2).putShort(3)
-            .flip()
-
-        quadIndexBuffer = IndexBuffer.Builder()
-            .indexCount(6)
-            .bufferType(IndexBuffer.Builder.IndexType.USHORT)
-            .build(engine)
-        quadIndexBuffer.setBuffer(engine, indexData)
-    }
-
-    private fun startAnimation() {
-        animator.interpolator = LinearInterpolator()
-        animator.duration = 4000
-        animator.repeatMode = ValueAnimator.RESTART
-        animator.repeatCount = ValueAnimator.INFINITE
-        animator.addUpdateListener { a ->
-            val transformMatrix = FloatArray(16)
-            Matrix.setRotateM(transformMatrix, 0, -(a.animatedValue as Float), 0.0f, 0.0f, 1.0f)
-            val tcm = engine.transformManager
-            tcm.setTransform(tcm.getInstance(triangleRenderable), transformMatrix)
-        }
-        animator.start()
-    }
-
-    override fun onResume() {
-        super.onResume()
-        choreographer.postFrameCallback(frameScheduler)
-        animator.start()
-    }
-
-    override fun onPause() {
-        super.onPause()
-        choreographer.removeFrameCallback(frameScheduler)
-        animator.cancel()
-    }
-
-    override fun onDestroy() {
-        super.onDestroy()
-        choreographer.removeFrameCallback(frameScheduler)
-        animator.cancel()
-        uiHelper.detach()
-
-        // Destroy all renderables.
-        scene.remove(triangleRenderable)
-        scene.remove(quadRenderable)
-
-        // Destroy all resources.
-        engine.destroyEntity(triangleRenderable)
-        engine.destroyEntity(quadRenderable)
-        engine.destroyRenderer(renderer)
-        engine.destroyVertexBuffer(triangleVertexBuffer)
-        engine.destroyIndexBuffer(triangleIndexBuffer)
-        engine.destroyVertexBuffer(quadVertexBuffer)
-        engine.destroyIndexBuffer(quadIndexBuffer)
-        engine.destroyMaterial(triangleMaterial)
-        engine.destroyMaterial(texturedMaterial)
-        engine.destroyView(view)
-        engine.destroyView(offscreenView)
-        engine.destroyScene(scene)
-        engine.destroyCameraComponent(camera.entity)
-        engine.destroyCameraComponent(offscreenCamera.entity)
-        renderTarget?.let { engine.destroyRenderTarget(it) }
-        texture?.let { engine.destroyTexture(it) }
-        hardwareBuffer?.close()
-
-        val entityManager = EntityManager.get()
-        entityManager.destroy(triangleRenderable)
-        entityManager.destroy(quadRenderable)
-        entityManager.destroy(camera.entity)
-        entityManager.destroy(offscreenCamera.entity)
-
-        engine.destroy()
-    }
-
-    inner class FrameCallback : Choreographer.FrameCallback {
-        override fun doFrame(frameTimeNanos: Long) {
-            choreographer.postFrameCallback(this)
-            if (uiHelper.isReadyToRender) {
-                if (renderer.beginFrame(swapChain!!, frameTimeNanos)) {
-                    // Render the triangle to the texture.
-                    renderer.render(offscreenView)
-                    // Render the quad to the screen.
-                    renderer.render(view)
-                    renderer.endFrame()
-                }
-            }
-        }
-    }
-
-    inner class SurfaceCallback : UiHelper.RendererCallback {
-        override fun onNativeWindowChanged(surface: Surface) {
-            swapChain?.let { engine.destroySwapChain(it) }
-            swapChain = engine.createSwapChain(surface, uiHelper.swapChainFlags)
-            displayHelper.attach(renderer, surfaceView.display)
-        }
-
-        override fun onDetachedFromSurface() {
-            displayHelper.detach()
-            swapChain?.let {
-                engine.destroySwapChain(it)
-                engine.flushAndWait()
-                swapChain = null
-            }
-        }
-
-        override fun onResized(width: Int, height: Int) {
-            // On-screen camera
-            val zoom = 1.0
-            val aspect = width.toDouble() / height.toDouble()
-            camera.setProjection(Camera.Projection.ORTHO, -aspect * zoom, aspect * zoom, -zoom, zoom, 0.0, 10.0)
-            view.viewport = Viewport(0, 0, width, height)
-
-            // Off-screen camera
-            val offscreenZoom = 1.5
-            offscreenCamera.setProjection(Camera.Projection.ORTHO,
-                -aspect * offscreenZoom, aspect * offscreenZoom,
-                -offscreenZoom, offscreenZoom, 0.0, 10.0)
-            offscreenView.viewport = Viewport(0, 0, width, height)
-
-            // If we have a render target, destroy it.
-            renderTarget?.let { engine.destroyRenderTarget(it) }
-            texture?.let { engine.destroyTexture(it) }
-            hardwareBuffer?.close()
-
-            if (useExternalTexture) {
-                // Create a new render target.
-                hardwareBuffer = HardwareBuffer.create(width, height,
-                    HardwareBuffer.RGBA_8888, 1,
-                    HardwareBuffer.USAGE_GPU_SAMPLED_IMAGE or HardwareBuffer.USAGE_GPU_COLOR_OUTPUT)
-
-                texture = Texture.Builder()
-                    .width(width)
-                    .height(height)
-                    .usage(Texture.Usage.COLOR_ATTACHMENT or Texture.Usage.SAMPLEABLE)
-                    .sampler(Texture.Sampler.SAMPLER_EXTERNAL)
-                    .format(Texture.InternalFormat.RGBA8)
-                    .external()
-                    .build(engine)
-
-                texture!!.setExternalImage(engine, hardwareBuffer!!)
-            } else {
-                texture = Texture.Builder()
-                    .width(width)
-                    .height(height)
-                    .levels(1)
-                    .usage(Texture.Usage.COLOR_ATTACHMENT or Texture.Usage.SAMPLEABLE)
-                    .format(Texture.InternalFormat.RGBA8)
-                    .build(engine)
-            }
-
-            renderTarget = RenderTarget.Builder()
-                .texture(RenderTarget.AttachmentPoint.COLOR, texture!!)
-                .build(engine)
-
-            offscreenView.renderTarget = renderTarget
-            // Set the texture on the quad material.
-            texturedMaterial.defaultInstance.setParameter("texture", texture!!,
-                TextureSampler(TextureSampler.MinFilter.LINEAR, TextureSampler.MagFilter.LINEAR,
-                               TextureSampler.WrapMode.CLAMP_TO_EDGE))
-            FilamentHelper.synchronizePendingFrames(engine)
-        }
-    }
-
-    private fun readUncompressedAsset(assetName: String): ByteBuffer {
-        assets.openFd(assetName).use { fd ->
-            val input = fd.createInputStream()
-            val dst = ByteBuffer.allocate(fd.length.toInt())
-            val src = Channels.newChannel(input)
-            src.read(dst)
-            src.close()
-            return dst.apply { rewind() }
-        }
-    }
-}

android/samples/sample-texture-target/src/main/materials/baked_color.mat

@@ -1,18 +0,0 @@
-material {
-    name : baked_color,
-    shadingModel : unlit,
-    requires : [
-        color
-    ]
-}
-
-fragment {
-    void material(inout MaterialInputs material) {
-        // You must always call the prepareMaterial() function
-        prepareMaterial(material);
-
-        // We set the material's color to the color interpolated from
-        // the model's vertices
-        material.baseColor = getColor();
-    }
-}

android/samples/sample-texture-target/src/main/materials/textured.mat

@@ -1,20 +0,0 @@
-material {
-    name : textured,
-    shadingModel : unlit,
-    parameters : [
-        {
-            type : sampler2d,
-            name : texture
-        }
-    ],
-    requires: [
-        uv0
-    ]
-}
-
-fragment {
-    void material(inout MaterialInputs material) {
-        prepareMaterial(material);
-        material.baseColor = texture(materialParams_texture, uvToRenderTargetUV(getUV0()));
-    }
-}

android/samples/sample-texture-target/src/main/materials/texturedExternal.mat

@@ -1,20 +0,0 @@
-material {
-    name : textured,
-    shadingModel : unlit,
-    parameters : [
-        {
-            type : samplerExternal,
-            name : texture
-        }
-    ],
-    requires: [
-        uv0
-    ]
-}
-
-fragment {
-    void material(inout MaterialInputs material) {
-        prepareMaterial(material);
-        material.baseColor = texture(materialParams_texture, uvToRenderTargetUV(getUV0()));
-    }
-}