Add rust deps to CI

Author: LegNeato

.github/workflows/rust.yml

@@ -13,17 +13,68 @@ env:
 
 jobs:
   test:
-    name: Test Rust Shaders
+    name: Test Rust Shaders - ${{ matrix.name }}
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, windows-latest, macos-latest]
+        include:
+          - os: ubuntu-latest
+            name: Ubuntu
+          - os: windows-latest
+            name: Windows
+          - os: macos-latest
+            name: macOS-MoltenVK
+            use_moltenvk: true
+          - os: macos-latest
+            name: macOS-SwiftShader
+            use_swiftshader: true
 
     steps:
       - uses: actions/checkout@v4
         with:
           submodules: "recursive"
 
+      - name: Install Vulkan SDK
+        uses: jakoch/install-vulkan-sdk-action@v1.0.0
+        with:
+          vulkan_version: 1.3.268.0
+          optional_components: com.lunarg.vulkan.debug
+          install_runtime: true
+          cache: true
+          stripdown: true
+      
+      - if: ${{ runner.os == 'Linux' }}
+        name: Install xvfb, llvmpipe and lavapipe
+        run: |
+          sudo apt-get update -y -qq
+          sudo add-apt-repository ppa:kisak/turtle -y
+          sudo apt-get update
+          sudo apt install -y xvfb libgl1-mesa-dri libxcb-xfixes0-dev mesa-vulkan-drivers
+      
+      - if: ${{ matrix.use_moltenvk == true }}
+        name: Setup MoltenVK on macOS
+        run: |
+          # MoltenVK should be installed with the Vulkan SDK
+          # Find and set the ICD path
+          VULKAN_SDK_VERSION=$(ls -1 $HOME/VulkanSDK | head -n 1)
+          echo "VK_ICD_FILENAMES=$HOME/VulkanSDK/$VULKAN_SDK_VERSION/macOS/share/vulkan/icd.d/MoltenVK_icd.json" >> $GITHUB_ENV
+      
+      - if: ${{ matrix.use_swiftshader == true }}
+        name: Install SwiftShader on macOS
+        run: |
+          # Based on https://github.com/GDRETools/gdsdecomp/blob/master/.github/actions/install-swiftshader/action.yml
+          git clone https://github.com/google/swiftshader.git
+          cd swiftshader
+          mkdir build && cd build
+          cmake -DSWIFTSHADER_BUILD_TESTS=OFF -DSWIFTSHADER_BUILD_SAMPLES=OFF ..
+          cmake --build . --config Release
+          sudo mkdir -p /usr/local/share/vulkan/icd.d
+          sudo cp Darwin/vk_swiftshader_icd.json /usr/local/share/vulkan/icd.d/
+          sudo mkdir -p /usr/local/lib
+          sudo cp Darwin/libvk_swiftshader.dylib /usr/local/lib/
+          # Set environment variable for SwiftShader ICD
+          echo "VK_ICD_FILENAMES=/usr/local/share/vulkan/icd.d/vk_swiftshader_icd.json" >> $GITHUB_ENV
+      
       - name: Install Rust
         uses: dtolnay/rust-toolchain@stable
         with: