github: support ARM linux in backend and renderdiff tests (#9817)

- Update get-mesa.sh to query dpkg --print-architecture to install
  the correct packages dynamically, enabling aarch64 support.
- Update get-vulkan-sdk.sh to install via apt-get on Linux
  (libvulkan-dev, vulkan-validationlayers, glslang-tools,
  spirv-tools) instead of downloading LunarG's x86_64 tarball.
- Add runner architecture to Mesa and Vulkan SDK GitHub Action cache
  keys to prevent collision.
- Update test.sh and preamble.sh to detect aarch64 and point to
  the appropriate aarch64-linux-gnu libraries.
- Fix typos and some renaming

.github/actions/get-mesa/action.yml

@@ -9,7 +9,7 @@ runs:
       uses: actions/cache@v4
       with:
         path: mesa
-        key: ${{ runner.os }}-mesa-deps-${{ env.GITHUB_MESA_VERSION }}
+        key: ${{ runner.os }}-${{ runner.arch }}-mesa-deps-${{ env.GITHUB_MESA_VERSION }}
     - name: Get Mesa
       run: |
         bash build/common/get-mesa.sh

.github/actions/get-vulkan-sdk/action.yml

@@ -9,7 +9,7 @@ runs:
       id: cache-vulkan-sdk
       with:
         path: ~/VulkanSDK
-        key: vulkansdk-${{ env.GITHUB_VULKANSDK_VERSION }}-2-${{ runner.os }}
+        key: vulkansdk-${{ env.GITHUB_VULKANSDK_VERSION }}-2-${{ runner.os }}-${{ runner.arch }}
     - name: Download Vulkan SDK
       if: steps.cache-vulkan-sdk.outputs.cache-hit != 'true'
       run: |
@@ -23,6 +23,7 @@ runs:
         unpack_vulkan_installer
       shell: bash
     - name: Run Vulkan SDK setup
+      if: runner.os != 'Linux'
       run: |
         pushd .
         cd ~/VulkanSDK/${GITHUB_VULKANSDK_VERSION}

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

@@ -1,4 +1,4 @@
-name: 'Web Preqrequisites'
+name: 'Web Prerequisites'
 runs:
   using: "composite"
   steps:

.github/workflows/presubmit.yml

@@ -96,7 +96,7 @@ jobs:
       - name: Run build script
         run: |
           cd build/linux && printf "y" | ./build.sh presubmit
-      - name: Test material parser
+      - name: Test - material parser
         run: |
           out/cmake-release/filament/test/test_material_parser
 
@@ -266,10 +266,10 @@ jobs:
             echo "accept=false" >> "$GITHUB_OUTPUT"
           fi
         shell: bash
-      - name: Renderdiff Generate
+      - name: Renderdiff generate
         if: steps.check_accept.outputs.accept != 'true'
         uses: ./.github/actions/renderdiff-generate
-      - name: Render and compare
+      - name: Compare rendered images
         if: steps.check_accept.outputs.accept != 'true'
         id: render_compare
         env:
@@ -301,12 +301,13 @@ jobs:
              echo "$DELIMITER" >> "$GITHUB_OUTPUT"
           fi
         shell: bash
-      - uses: actions/upload-artifact@v4
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
         if: steps.check_accept.outputs.accept != 'true'
         with:
           name: presubmit-renderdiff-result
           path: ./out/renderdiff
-      - name: Compare result
+      - name: Check results
         if: steps.check_accept.outputs.accept != 'true'
         run: |
           ERROR_STR="${{ steps.render_compare.outputs.err }}"
@@ -315,7 +316,7 @@ jobs:
               exit 1
           fi
 
-  validate-wgsl-webgpu:
+  build-wgsl-webgpu:
     name: validate-wgsl-webgpu
     runs-on: 'arm-ubuntu-24.04-16core'
     needs: [check-verification]

build/common/get-mesa.sh

@@ -54,8 +54,13 @@ if [[ "$OS_NAME" == "Linux" ]]; then
         #   is constantly being updated and sometimes not compatible with the current
         #   linux platform.
         # Note that we assume this platform is compatible with ubuntu-22.04 x86_64
+        DPKG_ARCH=$(dpkg --print-architecture)
+        EXTRA_PACKAGES=""
+        if [[ "$DPKG_ARCH" == "amd64" ]]; then
+            EXTRA_PACKAGES="lib32gcc-s1 lib32stdc++6 libc6-i386"
+        fi
         sudo apt-get -y install \
-             autoconf automake autopoint autotools-dev bindgen bison build-essential bzip2 cpp cpp-11 debhelper debugedit dh-autoreconf dh-strip-nondeterminism diffstat directx-headers-dev dpkg-dev dwz flex g++ g++-11 gcc gcc-11 gcc-11-base:amd64 gettext glslang-tools icu-devtools intltool-debian lib32gcc-s1 lib32stdc++6 libarchive-zip-perl libasan6:amd64 libatomic1:amd64 libc-dev-bin libc6-dbg:amd64 libc6-dev:amd64 libc6-i386 libcc1-0:amd64 libclang-${GITHUB_CLANG_VERSION}-dev libclang-common-${GITHUB_CLANG_VERSION}-dev libclang-cpp${GITHUB_CLANG_VERSION} libclang-cpp${GITHUB_CLANG_VERSION}-dev libclang1-14 libclang1-${GITHUB_CLANG_VERSION} libclc-${GITHUB_CLANG_VERSION} libclc-${GITHUB_CLANG_VERSION}-dev libcrypt-dev:amd64 libdebhelper-perl libdpkg-perl libdrm-amdgpu1:amd64 libdrm-dev:amd64 libdrm-intel1:amd64 libdrm-nouveau2:amd64 libdrm-radeon1:amd64 libelf-dev:amd64 libexpat1-dev:amd64 libffi-dev:amd64 libfile-stripnondeterminism-perl libgc1:amd64 libgcc-11-dev:amd64 libgl1:amd64 libgl1-mesa-dri:amd64 libglapi-mesa:amd64 libglvnd-core-dev:amd64 libglvnd0:amd64 libglx-mesa0:amd64 libglx0:amd64 libgomp1:amd64 libicu-dev:amd64 libisl23:amd64 libitm1:amd64 libllvm14:amd64 libllvm${GITHUB_CLANG_VERSION}:amd64 libllvmspirvlib-${GITHUB_CLANG_VERSION}-dev:amd64 libllvmspirvlib${GITHUB_CLANG_VERSION}:amd64 liblsan0:amd64 libmpc3:amd64 libncurses-dev:amd64 libnsl-dev:amd64 libobjc-11-dev:amd64 libobjc4:amd64 libpciaccess-dev:amd64 libpciaccess0f:amd64 libpfm4:amd64 libpthread-stubs0-dev:amd64 libquadmath0:amd64 libsensors-config libsensors-dev:amd64 libsensors5:amd64 libset-scalar-perl libstd-rust-1.75:amd64 libstd-rust-dev:amd64 libstdc++-11-dev:amd64 libsub-override-perl libtinfo-dev:amd64 libtirpc-dev:amd64 libtool libtsan0:amd64 libubsan1:amd64 libva-dev:amd64 libva-drm2:amd64 libva-glx2:amd64 libva-wayland2:amd64 libva-x11-2:amd64 libva2:amd64 libvdpau-dev:amd64 libvdpau1:amd64 libvulkan-dev:amd64 libvulkan1:amd64 libwayland-bin libwayland-client0:amd64 libwayland-cursor0:amd64 libwayland-dev:amd64 libwayland-egl-backend-dev:amd64 libwayland-egl1:amd64 libwayland-server0:amd64 libx11-dev:amd64 libx11-xcb-dev:amd64 libx11-xcb1:amd64 libxau-dev:amd64 libxcb-dri2-0:amd64 libxcb-dri2-0-dev:amd64 libxcb-dri3-0:amd64 libxcb-dri3-dev:amd64 libxcb-glx0:amd64 libxcb-glx0-dev:amd64 libxcb-present-dev:amd64 libxcb-present0:amd64 libxcb-randr0:amd64 libxcb-randr0-dev:amd64 libxcb-render0:amd64 libxcb-render0-dev:amd64 libxcb-shape0:amd64 libxcb-shape0-dev:amd64 libxcb-shm0:amd64 libxcb-shm0-dev:amd64 libxcb-sync-dev:amd64 libxcb-sync1:amd64 libxcb-xfixes0:amd64 libxcb-xfixes0-dev:amd64 libxcb1-dev:amd64 libxdmcp-dev:amd64 libxext-dev:amd64 libxfixes-dev:amd64 libxfixes3:amd64 libxml2-dev:amd64 libxrandr-dev:amd64 libxrandr2:amd64 libxrender-dev:amd64 libxrender1:amd64 libxshmfence-dev:amd64 libxshmfence1:amd64 libxxf86vm-dev:amd64 libxxf86vm1:amd64 libz3-4:amd64 libz3-dev:amd64 libzstd-dev:amd64 linux-libc-dev:amd64 llvm-${LLVM_VERSION} llvm-${LLVM_VERSION}-dev llvm-${LLVM_VERSION}-linker-tools llvm-${LLVM_VERSION}-runtime llvm-${LLVM_VERSION}-tools llvm-spirv-${LLVM_VERSION} lto-disabled-list m4 make meson ninja-build pkg-config po-debconf python3-mako python3-ply python3-pygments quilt rpcsvc-proto rustc spirv-tools valgrind wayland-protocols x11proto-dev xorg-sgml-doctools xtrans-dev zlib1g-dev:amd64 \
+             autoconf automake autopoint autotools-dev bindgen bison build-essential bzip2 cpp cpp-11 debhelper debugedit dh-autoreconf dh-strip-nondeterminism diffstat directx-headers-dev dpkg-dev dwz flex g++ g++-11 gcc gcc-11 gcc-11-base:${DPKG_ARCH} gettext glslang-tools icu-devtools intltool-debian ${EXTRA_PACKAGES} libarchive-zip-perl libasan6:${DPKG_ARCH} libatomic1:${DPKG_ARCH} libc-dev-bin libc6-dbg:${DPKG_ARCH} libc6-dev:${DPKG_ARCH} libcc1-0:${DPKG_ARCH} libclang-${GITHUB_CLANG_VERSION}-dev libclang-common-${GITHUB_CLANG_VERSION}-dev libclang-cpp${GITHUB_CLANG_VERSION} libclang-cpp${GITHUB_CLANG_VERSION}-dev libclang1-14 libclang1-${GITHUB_CLANG_VERSION} libclc-${GITHUB_CLANG_VERSION} libclc-${GITHUB_CLANG_VERSION}-dev libcrypt-dev:${DPKG_ARCH} libdebhelper-perl libdpkg-perl libdrm-amdgpu1:${DPKG_ARCH} libdrm-dev:${DPKG_ARCH} libdrm-intel1:${DPKG_ARCH} libdrm-nouveau2:${DPKG_ARCH} libdrm-radeon1:${DPKG_ARCH} libelf-dev:${DPKG_ARCH} libexpat1-dev:${DPKG_ARCH} libffi-dev:${DPKG_ARCH} libfile-stripnondeterminism-perl libgc1:${DPKG_ARCH} libgcc-11-dev:${DPKG_ARCH} libgl1:${DPKG_ARCH} libgl1-mesa-dri:${DPKG_ARCH} libglapi-mesa:${DPKG_ARCH} libglvnd-core-dev:${DPKG_ARCH} libglvnd0:${DPKG_ARCH} libglx-mesa0:${DPKG_ARCH} libglx0:${DPKG_ARCH} libgomp1:${DPKG_ARCH} libicu-dev:${DPKG_ARCH} libisl23:${DPKG_ARCH} libitm1:${DPKG_ARCH} libllvm14:${DPKG_ARCH} libllvm${GITHUB_CLANG_VERSION}:${DPKG_ARCH} libllvmspirvlib-${GITHUB_CLANG_VERSION}-dev:${DPKG_ARCH} libllvmspirvlib${GITHUB_CLANG_VERSION}:${DPKG_ARCH} liblsan0:${DPKG_ARCH} libmpc3:${DPKG_ARCH} libncurses-dev:${DPKG_ARCH} libnsl-dev:${DPKG_ARCH} libobjc-11-dev:${DPKG_ARCH} libobjc4:${DPKG_ARCH} libpciaccess-dev:${DPKG_ARCH} libpciaccess0f:${DPKG_ARCH} libpfm4:${DPKG_ARCH} libpthread-stubs0-dev:${DPKG_ARCH} libquadmath0:${DPKG_ARCH} libsensors-config libsensors-dev:${DPKG_ARCH} libsensors5:${DPKG_ARCH} libset-scalar-perl libstd-rust-1.75:${DPKG_ARCH} libstd-rust-dev:${DPKG_ARCH} libstdc++-11-dev:${DPKG_ARCH} libsub-override-perl libtinfo-dev:${DPKG_ARCH} libtirpc-dev:${DPKG_ARCH} libtool libtsan0:${DPKG_ARCH} libubsan1:${DPKG_ARCH} libva-dev:${DPKG_ARCH} libva-drm2:${DPKG_ARCH} libva-glx2:${DPKG_ARCH} libva-wayland2:${DPKG_ARCH} libva-x11-2:${DPKG_ARCH} libva2:${DPKG_ARCH} libvdpau-dev:${DPKG_ARCH} libvdpau1:${DPKG_ARCH} libvulkan-dev:${DPKG_ARCH} libvulkan1:${DPKG_ARCH} libwayland-bin libwayland-client0:${DPKG_ARCH} libwayland-cursor0:${DPKG_ARCH} libwayland-dev:${DPKG_ARCH} libwayland-egl-backend-dev:${DPKG_ARCH} libwayland-egl1:${DPKG_ARCH} libwayland-server0:${DPKG_ARCH} libx11-dev:${DPKG_ARCH} libx11-xcb-dev:${DPKG_ARCH} libx11-xcb1:${DPKG_ARCH} libxau-dev:${DPKG_ARCH} libxcb-dri2-0:${DPKG_ARCH} libxcb-dri2-0-dev:${DPKG_ARCH} libxcb-dri3-0:${DPKG_ARCH} libxcb-dri3-dev:${DPKG_ARCH} libxcb-glx0:${DPKG_ARCH} libxcb-glx0-dev:${DPKG_ARCH} libxcb-present-dev:${DPKG_ARCH} libxcb-present0:${DPKG_ARCH} libxcb-randr0:${DPKG_ARCH} libxcb-randr0-dev:${DPKG_ARCH} libxcb-render0:${DPKG_ARCH} libxcb-render0-dev:${DPKG_ARCH} libxcb-shape0:${DPKG_ARCH} libxcb-shape0-dev:${DPKG_ARCH} libxcb-shm0:${DPKG_ARCH} libxcb-shm0-dev:${DPKG_ARCH} libxcb-sync-dev:${DPKG_ARCH} libxcb-sync1:${DPKG_ARCH} libxcb-xfixes0:${DPKG_ARCH} libxcb-xfixes0-dev:${DPKG_ARCH} libxcb1-dev:${DPKG_ARCH} libxdmcp-dev:${DPKG_ARCH} libxext-dev:${DPKG_ARCH} libxfixes-dev:${DPKG_ARCH} libxfixes3:${DPKG_ARCH} libxml2-dev:${DPKG_ARCH} libxrandr-dev:${DPKG_ARCH} libxrandr2:${DPKG_ARCH} libxrender-dev:${DPKG_ARCH} libxrender1:${DPKG_ARCH} libxshmfence-dev:${DPKG_ARCH} libxshmfence1:${DPKG_ARCH} libxxf86vm-dev:${DPKG_ARCH} libxxf86vm1:${DPKG_ARCH} libz3-4:${DPKG_ARCH} libz3-dev:${DPKG_ARCH} libzstd-dev:${DPKG_ARCH} linux-libc-dev:${DPKG_ARCH} llvm-${LLVM_VERSION} llvm-${LLVM_VERSION}-dev llvm-${LLVM_VERSION}-linker-tools llvm-${LLVM_VERSION}-runtime llvm-${LLVM_VERSION}-tools llvm-spirv-${LLVM_VERSION} lto-disabled-list m4 make meson ninja-build pkg-config po-debconf python3-mako python3-ply python3-pygments quilt rpcsvc-proto rustc spirv-tools valgrind wayland-protocols x11proto-dev xorg-sgml-doctools xtrans-dev zlib1g-dev:${DPKG_ARCH} \
              clang-$GITHUB_CLANG_VERSION libc++-$GITHUB_CLANG_VERSION-dev libc++abi-$GITHUB_CLANG_VERSION-dev
 
         sudo update-alternatives --install /usr/bin/cc cc /usr/bin/clang-${GITHUB_CLANG_VERSION} 100

build/common/get-vulkan-sdk.sh

@@ -63,6 +63,10 @@ function _preferred_os_filename() {
 
 function download_vulkan_installer() {
   local os=$(_get_os)
+  if [[ "$os" == "linux" ]]; then
+    echo "Linux uses apt to install vulkan dependencies, skipping tarball download." >&2
+    return 0
+  fi
   local dl_filename=$(_os_filename ${VULKAN_SDK_VERSION})
   local filename=$(_preferred_os_filename)
   local url=https://sdk.lunarg.com/sdk/download/$VULKAN_SDK_VERSION/$os/$dl_filename?Human=true
@@ -79,15 +83,22 @@ function download_vulkan_installer() {
 
 function unpack_vulkan_installer() {
   local os=$(_get_os)
+  if [[ "$os" == "linux" ]]; then
+    install_${os}
+    return 0
+  fi
   local filename=$(_preferred_os_filename $os)
   test -f $filename
   install_${os}
 }
 
 function install_linux() {
-  test -d $VULKAN_SDK_DIR && test -f vulkan_sdk.tar.gz
-  echo "extract just the SDK's prebuilt binaries ($VULKAN_SDK_VERSION/x86_64) from vulkan_sdk.tar.gz into $VULKAN_SDK" >&2
-  tar -C "$VULKAN_SDK_DIR" --strip-components 2 -xf vulkan_sdk.tar.gz $VULKAN_SDK_VERSION/x86_64
+  echo "Installing Vulkan dependencies via apt for Linux..." >&2
+  sudo apt-get update -y
+  sudo apt-get install -y libvulkan-dev vulkan-validationlayers glslang-tools spirv-tools
+
+  # Create a dummy SDK dir to satisfy scripts expecting a VulkanSDK folder structure
+  mkdir -p ~/VulkanSDK/${VULKAN_SDK_VERSION}
 }
 
 function install_mac() {

test/backend/test.sh

@@ -17,9 +17,15 @@ BACKEND_TEST_TARGET=''
 
 # Set environment variables to use Mesa drivers.
 os_name=$(uname -s)
+arch_name=$(uname -m)
 if [[ "$os_name" == "Linux" ]]; then
-    export LD_LIBRARY_PATH="${PROJECT_ROOT_DIR}/mesa/out/lib/x86_64-linux-gnu"
-    export VK_ICD_FILENAMES="${PROJECT_ROOT_DIR}/mesa/out/share/vulkan/icd.d/lvp_icd.x86_64.json"
+    if [[ "$arch_name" == "aarch64" ]]; then
+        export LD_LIBRARY_PATH="${PROJECT_ROOT_DIR}/mesa/out/lib/aarch64-linux-gnu"
+        export VK_ICD_FILENAMES="${PROJECT_ROOT_DIR}/mesa/out/share/vulkan/icd.d/lvp_icd.aarch64.json"
+    else
+        export LD_LIBRARY_PATH="${PROJECT_ROOT_DIR}/mesa/out/lib/x86_64-linux-gnu"
+        export VK_ICD_FILENAMES="${PROJECT_ROOT_DIR}/mesa/out/share/vulkan/icd.d/lvp_icd.x86_64.json"
+    fi
     BACKEND_TEST_TARGET=backend_test_linux
 elif [[ "$os_name" == "Darwin" ]]; then
     export DYLD_LIBRARY_PATH="${PROJECT_ROOT_DIR}/mesa/out/lib"

test/renderdiff/src/preamble.sh

@@ -26,9 +26,15 @@ GLTF_DIR="$(pwd)/gltf/Models"
 BUILD_COMMON_DIR="$(pwd)/build/common"
 
 os_name=$(uname -s)
+arch_name=$(uname -m)
 if [[ "$os_name" == "Linux" ]]; then
-    MESA_LIB_DIR="${MESA_DIR}lib/x86_64-linux-gnu"
-    MESA_VK_ICD_PATH="${MESA_DIR}share/vulkan/icd.d/lvp_icd.x86_64.json"
+    if [[ "$arch_name" == "aarch64" ]]; then
+        MESA_LIB_DIR="${MESA_DIR}lib/aarch64-linux-gnu"
+        MESA_VK_ICD_PATH="${MESA_DIR}share/vulkan/icd.d/lvp_icd.aarch64.json"
+    else
+        MESA_LIB_DIR="${MESA_DIR}lib/x86_64-linux-gnu"
+        MESA_VK_ICD_PATH="${MESA_DIR}share/vulkan/icd.d/lvp_icd.x86_64.json"
+    fi
 elif [[ "$os_name" == "Darwin" ]]; then
     MESA_LIB_DIR="${MESA_DIR}lib"
     MESA_VK_ICD_PATH="${MESA_DIR}share/vulkan/icd.d/lvp_icd.aarch64.json"