Added install_llvmpipe script

dist/platforms/windows/build.ps1

@@ -154,7 +154,7 @@ $_, $customParametersArray = Invoke-Expression('Write-Output -- "" ' + $Env:CUST
 $unityArgs = @(
     "-quit",
     "-batchmode",
-    "-nographics",
+    ($Env:LLVMPIPE_INSTALLED -eq "true" ? "-force-opengl" : "-nographics"),
     "-silent-crashes",
     "-customBuildName", "`"$Env:BUILD_NAME`"",
     "-projectPath", "`"$Env:UNITY_PROJECT_PATH`"",

dist/platforms/windows/entrypoint.ps1

@@ -13,6 +13,9 @@ Get-Process -Name regsvr32 | ForEach-Object { Stop-Process -Id $_.Id -Force }
 # Setup Git Credentials
 . "c:\steps\set_gitcredential.ps1"
 
+# Install LLVMpipe software graphics driver
+. "c:\steps\install_llvmpipe.ps1"
+
 # Activate Unity
 if ($env:SKIP_ACTIVATION -ne "true") {
   . "c:\steps\activate.ps1"

dist/platforms/windows/install_llvmpipe.ps1

@@ -0,0 +1,55 @@
+$Private:repo = "mmozeiko/build-mesa"
+$Private:downloadPath = "$Env:TEMP\mesa.zip"
+$Private:extractPath = "$Env:TEMP\mesa"
+$Private:destinationPath = "$Env:UNITY_PATH\Editor\"
+
+$LLVMPIPE_INSTALLED = "false"
+
+try {
+    # Get the latest release info from GitHub API
+    $releaseUrl = "https://api.github.com/repos/$repo/releases/latest"
+    $release = Invoke-RestMethod -Uri $releaseUrl -Headers @{ "User-Agent" = "PowerShell" }
+
+    # Get the download URL for the zip asset
+    $zipUrl = $release.assets | Where-Object { $_.name -like "mesa-llvmpipe-x64*.zip" } | Select-Object -First 1 -ExpandProperty browser_download_url
+
+    if (-not $zipUrl) {
+        throw "No zip file found in the latest release."
+    }
+
+    # Download the zip file
+    Write-Host "Downloading $zipUrl..."
+    Invoke-WebRequest -Uri $zipUrl -OutFile $downloadPath
+
+    # Create extraction directory if it doesn't exist
+    if (-not (Test-Path $extractPath)) {
+        New-Item -ItemType Directory -Path $extractPath | Out-Null
+    }
+
+    # Extract the zip file
+    Write-Host "Extracting $downloadPath to $extractPath..."
+    Expand-Archive -Path $downloadPath -DestinationPath $extractPath -Force
+
+    # Create destination directory if it doesn't exist
+    if (-not (Test-Path $destinationPath)) {
+        New-Item -ItemType Directory -Path $destinationPath | Out-Null
+    }
+
+    # Copy extracted files to destination
+    Write-Host "Copying files to $destinationPath..."
+    Copy-Item -Path "$extractPath\*" -Destination $destinationPath -Recurse -Force
+
+    Write-Host "Successfully downloaded, extracted, and copied Mesa files to $destinationPath"
+
+    $LLVMPIPE_INSTALLED = "true"
+} catch {
+    Write-Error "An error occurred: $_"
+} finally {
+    # Clean up temporary files
+    if (Test-Path $downloadPath) {
+        Remove-Item $downloadPath -Force
+    }
+    if (Test-Path $extractPath) {
+        Remove-Item $extractPath -Recurse -Force
+    }
+}