.github/workflows/CI.yml

name: CI

# Controls when the action will run.
on:
  # Triggers the workflow on push or pull request events
  push:
  pull_request:
  # Allows you to run this workflow manually from the Actions tab
  workflow_dispatch:

# A workflow run is made up of one or more jobs that can run sequentially or in parallel
# See the following, which includes links to supported macOS versions, including supported Xcode versions
# https://docs.github.com/en/actions/using-github-hosted-runners/about-github-hosted-runners/about-github-hosted-runners#supported-runners-and-hardware-resources
jobs:
  build:
    strategy:
      matrix:
        # Primary build on latest macOS and its default Xcode version
        os: [ "macos-latest" ]
        platform: [ "all", "macos", "ios" ]
        upload_artifacts: [ true ]
        select_xcode: [ false ]
        private_api: [ false ]

        include:
          # macOS build with private APIs enabled.
          - os: "macos-latest"
            platform: "macos"
            upload_artifacts: true
            select_xcode: false
            private_api: true
          # Legacy build. Up to 3 versions behind latest (or beta).
          - os: "macos-14"
            xcode: "15.0.1"
            platform: "macos"
            upload_artifacts: false
            select_xcode: true
            private_api: false
      fail-fast: false

    name: MoltenVK (Xcode ${{ matrix.xcode }} - ${{ matrix.platform }}${{ matrix.private_api && '-privateapi' || '' }})

    runs-on: ${{ matrix.os }}

    env:
      XCODE_DEV_PATH: "/Applications/Xcode_${{ matrix.xcode }}.app/Contents/Developer"
      ARTIFACT_TYPE: ${{ matrix.platform }}${{ matrix.private_api && '-privateapi' || '' }}
      BUILD_ARGUMENTS: ${{ matrix.platform }} ${{ matrix.private_api && 'MVK_USE_METAL_PRIVATE_API=1' || '' }}

    steps:
      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
      - uses: actions/checkout@v4

      # Python 3.12 removed distutils, which is used by glslang::update_glslang_sources.py called from fetchDependencies
      - uses: actions/setup-python@v5
        with:
          python-version: '3.11'

      - name: List available Xcode versions
        run: ls /Applications | grep Xcode

      - name: Select Xcode version
        if: matrix.select_xcode == true
        run: sudo xcode-select -switch "${XCODE_DEV_PATH}"

      - name: Prep
        id: prep
        run: |
          echo "Get Xcode version info"
          XCODE_VERSION="$(xcodebuild -version)"
          echo "${XCODE_VERSION}"
          XCODE_VERSION="$(echo "${XCODE_VERSION}" | tr '\t\r\n ' '_')"
          echo "${XCODE_VERSION}"
          echo "XCODE_VERSION=${XCODE_VERSION}" >> $GITHUB_OUTPUT

      - name: Cache Dependencies
        id: cache-dependencies
        if: success() && !(github.event_name == 'push' && contains(github.ref, 'refs/tags/')) # never cache dependencies for pushed tags
        uses: actions/cache@v3
        with:
          path: |
            External/build
            !External/build/Intermediates
          key: ${{ runner.os }}-${{ steps.prep.outputs.XCODE_VERSION }}-${{ matrix.platform }}-${{ hashFiles('fetchDependencies','ExternalRevisions/**','ExternalDependencies.xcodeproj/**','Scripts/**') }}

      - name: Fetch Dependencies (Use Built Cache)
        if: steps.cache-dependencies.outputs.cache-hit == 'true'
        run: |
          ./fetchDependencies -v --none

      - name: Fetch Dependencies
        if: steps.cache-dependencies.outputs.cache-hit != 'true'
        run: |
          ./fetchDependencies -v --${{ matrix.platform }}

      - name: Output Dependency Build Logs on Failure
        if: failure()
        run: cat "dependenciesbuild.log"

      - name: Build MoltenVK
        run: |
          make ${BUILD_ARGUMENTS}

      - name: Output MoltenVK Build Logs on Failure
        if: failure()
        run: |
          if [ -f "xcodebuild.log" ]; then
            cat "xcodebuild.log"
          fi

      - name: Tar Artifacts
        if: success() && matrix.upload_artifacts == true
        # See: https://github.com/actions/upload-artifact#maintaining-file-permissions-and-case-sensitive-files
        # To reduce artifact size, don't include any stand-alone shader converter binaries.
        run: |
          rm -rf Package/Release/MoltenVKShaderConverter
          tar -C Package -s/Release/MoltenVK/ -cvf "MoltenVK-${ARTIFACT_TYPE}.tar" Release/

      - name: Upload Artifacts
        if: success() && matrix.upload_artifacts == true
        uses: actions/upload-artifact@v4
        with:
          name: "MoltenVK-${{ env.ARTIFACT_TYPE }}"
          path: "MoltenVK-${{ env.ARTIFACT_TYPE }}.tar"

  build_cmake:
    strategy:
      matrix:
        # Primary build on latest macOS and its default Xcode version
        os: [ "macos-latest" ]
        # platform: [ "all", "macos", "ios" ]
        config: [Debug, Release]
      fail-fast: false

    name: 'MoltenVK (Cmake - ${{ matrix.config }})'

    runs-on: ${{ matrix.os }}

    steps:
      - uses: actions/checkout@v4

      - name: Dependencies
        if: runner.os == 'macOS'
        run: |
          brew install ccache
          echo 'CACHE_PATH=~/Library/Caches/ccache' >> "$GITHUB_ENV"

      - name: Get number of CPU cores
        uses: SimenB/github-actions-cpu-cores@v2.0.0
        id: cpu-cores

      - name: Cache Build
        id: cache-build
        uses: actions/cache@v4
        with:
          path: ${{ env.CACHE_PATH }}
          key: ${{ runner.os }}-${{ matrix.config }}-cache

      - name: Prepare ccache
        run: |
          ccache --max-size=1.0G
          ccache -V && ccache --show-config
          ccache --show-stats && ccache --zero-stats

      - name: Configure
        run: |
          mkdir -p build
          cd build
          cmake .. -DCMAKE_BUILD_TYPE=${{ matrix.config }}

      - name: Build
        run: |
          cmake --build build -j ${{ steps.cpu-cores.outputs.count }}
          ccache --show-stats

  release:
    name: 'Release'

    needs: [build]

    runs-on: ubuntu-latest

    if: ${{ startsWith(github.ref, 'refs/tags/') }}

    permissions:
      contents: write

    steps:
      - name: Download Artifacts
        uses: actions/download-artifact@v4

      - name: Create Release
        uses: ncipollo/release-action@v1
        with:
          # Allow updating existing releases if the workflow is triggered by release creation or re-run.
          allowUpdates: true
          # When the release is updated, delete the existing artifacts for replacement.
          removeArtifacts: true
          # If a release is being replaced, omit updating the name and body.
          # Allows for creating a release and filling these in before the workflow runs.
          # Then, the workflow will populate the release with the artifacts.
          omitNameDuringUpdate: true
          omitBodyDuringUpdate: true
          # Upload all MoltenVK CI artifacts as release assets.
          artifacts: "MoltenVK*/*"
          artifactErrorsFailBuild: true