Improve Windows vcpkg setup and error handling in OpenXR engine installation

Add vcpkg PATH resolution using VCPKG_INSTALLATION_ROOT. Add error checking after simple_engine and openxr-loader installation steps. Implement vcpkg caching in GitHub Actions workflow to speed up CI builds. Consolidate vcpkg environment setup into separate step with binary cache configuration.

Author: gpx1000

.github/workflows/openxr_engine_ci.yml

@@ -121,10 +121,22 @@ jobs:
           echo "CMAKE_PREFIX_PATH=$SDK_SYSROOT" >> "$GITHUB_ENV"
           echo "Vulkan_INCLUDE_DIR=$SDK_SYSROOT/include" >> "$GITHUB_ENV"
 
-      - name: Bootstrap vcpkg (Windows)
+      # Use the engine's dependency install scripts instead of calling vcpkg directly in CI.
+      - name: Cache vcpkg (Windows)
         if: runner.os == 'Windows'
+        id: cache-vcpkg-windows
+        uses: actions/cache@v4
+        with:
+          path: |
+            ${{ runner.temp }}/vcpkg
+            ${{ runner.temp }}/vcpkg-cache
+          key: ${{ runner.os }}-openxr-vcpkg-${{ hashFiles('attachments/simple_engine/vcpkg.json') }}
+
+      - name: Bootstrap vcpkg (Windows)
+        if: runner.os == 'Windows' && steps.cache-vcpkg-windows.outputs.cache-hit != 'true'
         shell: pwsh
         run: |
+          $ErrorActionPreference = 'Stop'
           $vcpkgRoot = Join-Path $env:RUNNER_TEMP "vcpkg"
           if (-not (Test-Path $vcpkgRoot)) {
             git clone https://github.com/microsoft/vcpkg $vcpkgRoot
@@ -133,7 +145,23 @@ jobs:
           .\bootstrap-vcpkg.bat
           Pop-Location
           "VCPKG_INSTALLATION_ROOT=$vcpkgRoot" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+          "$vcpkgRoot" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
+          "CMAKE_TOOLCHAIN_FILE=$vcpkgRoot\scripts\buildsystems\vcpkg.cmake" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+
+      - name: Set vcpkg env (Windows)
+        if: runner.os == 'Windows'
+        shell: pwsh
+        run: |
+          $vcpkgRoot = Join-Path $env:RUNNER_TEMP "vcpkg"
+          $vcpkgCache = Join-Path $env:RUNNER_TEMP "vcpkg-cache"
+          if (-not (Test-Path $vcpkgCache)) {
+            New-Item -Path $vcpkgCache -ItemType Directory
+          }
+          "VCPKG_INSTALLATION_ROOT=$vcpkgRoot" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+          "$vcpkgRoot" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
           "CMAKE_TOOLCHAIN_FILE=$vcpkgRoot\scripts\buildsystems\vcpkg.cmake" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+          "VCPKG_DEFAULT_BINARY_CACHE=$vcpkgCache" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+          "VCPKG_BINARY_SOURCES=clear;files,$vcpkgCache,readwrite" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
 
       - name: Install dependencies (Windows)
         if: runner.os == 'Windows'

attachments/openxr_engine/install_dependencies_windows.bat

@@ -7,12 +7,30 @@ if not exist "%SIMPLE_ENGINE_DIR%" (
     exit /b 1
 )
 
+:: Ensure vcpkg is accessible
+where vcpkg >nul 2>nul
+if %ERRORLEVEL% neq 0 (
+    if defined VCPKG_INSTALLATION_ROOT (
+        if exist "%VCPKG_INSTALLATION_ROOT%\vcpkg.exe" (
+            set "PATH=%VCPKG_INSTALLATION_ROOT%;%PATH%"
+        )
+    )
+)
+
 echo Calling simple_engine dependencies installer...
 call "%SIMPLE_ENGINE_DIR%\install_dependencies_windows.bat"
+if %ERRORLEVEL% neq 0 (
+    echo Error: simple_engine dependencies installation failed.
+    exit /b %ERRORLEVEL%
+)
 
 echo.
 echo Installing OpenXR loader...
 vcpkg install openxr-loader --triplet=x64-windows
+if %ERRORLEVEL% neq 0 (
+    echo Error: Failed to install openxr-loader.
+    exit /b %ERRORLEVEL%
+)
 
 echo.
 echo OpenXR dependencies installation completed!