chore: Remove OpenGL graphics API

.github/workflows/build-linux-runtime.yml

@@ -27,24 +27,14 @@ on:
         options:
           - Debug
           - Release
-      graphics-api:
-        description: Graphics API
-        default: OpenGL
-        type: choice
-        options:
-          - OpenGL
-          - Vulkan
   workflow_call:
     inputs:
       build-type:
         default: Debug
         type: string
-      graphics-api:
-        default: OpenGL
-        type: string
 
 concurrency:
-  group: build-linux-runtime-${{ github.event.pull_request.number || github.ref }}-${{ github.event.inputs.build-type || inputs.build-type || 'Debug' }}-${{ github.event.inputs.graphics-api || inputs.graphics-api || 'OpenGL' }}
+  group: build-linux-runtime-${{ github.event.pull_request.number || github.ref }}-${{ github.event.inputs.build-type || inputs.build-type || 'Debug' }}
   cancel-in-progress: true
 
 jobs:
@@ -53,7 +43,7 @@ jobs:
   #
   Linux-Runtime:
     if: ${{ github.event_name == 'workflow_dispatch' || github.event_name == 'workflow_call' || github.event.pull_request.draft == false }}
-    name: Build (${{ github.event.inputs.build-type || inputs.build-type || 'Debug' }}, ${{ github.event.inputs.graphics-api || inputs.graphics-api || 'OpenGL' }})
+    name: Build (${{ github.event.inputs.build-type || inputs.build-type || 'Debug' }})
     runs-on: windows-2025-vs2026
     steps:
       - uses: actions/checkout@v4
@@ -70,6 +60,5 @@ jobs:
             -v:m -p:WarningLevel=0 `
             -p:Configuration=${{ github.event.inputs.build-type || inputs.build-type || 'Debug' }} `
             -p:StridePlatforms=Linux `
-            -p:StrideGraphicsApis=${{ github.event.inputs.graphics-api || inputs.graphics-api || 'OpenGL' }} `
             -p:StrideSkipUnitTests=true `
             -p:StrideSkipAutoPack=true

.github/workflows/build-windows-runtime.yml

@@ -34,8 +34,6 @@ on:
         options:
           - Direct3D11
           - Direct3D12
-          - OpenGL
-          - OpenGLES
           - Vulkan
   workflow_call:
     inputs:

.github/workflows/main.yml

@@ -75,18 +75,16 @@ jobs:
     strategy:
       matrix:
         build-type: [Release]
-        graphics-api: [OpenGL, Vulkan]
     uses: ./.github/workflows/build-linux-runtime.yml
     secrets: inherit
     with:
       build-type: ${{ matrix.build-type }}
-      graphics-api: ${{ matrix.graphics-api }}
 
   Windows-Runtime:
     strategy:
       matrix:
         build-type: [Release]
-        graphics-api: [Direct3D11, Direct3D12, OpenGL, OpenGLES, Vulkan]
+        graphics-api: [Direct3D11, Direct3D12, Vulkan]
     uses: ./.github/workflows/build-windows-runtime.yml
     secrets: inherit
     with:

.github/workflows/test-linux.yml

@@ -72,8 +72,7 @@ jobs:
             -restore -m:1 -nr:false \
             -v:m -p:WarningLevel=0 \
             -p:Configuration=${{ github.event.inputs.build-type || inputs.build-type }} \
-            -p:StridePlatforms=Linux \
-            -p:StrideGraphicsApis=OpenGL \
+            -p:StridePlatforms=Linux
       # This step isn't needed, it lists the NuGet sources again
       # - name: Inspect NuGet Local Sources (always)
       #   if: always()

build/Stride.build

@@ -177,22 +177,6 @@ Example of use:
     <MSBuild Targets="Build" Projects="$(StrideRuntimeSolution)" Properties="$(BuildProperties);StrideGraphicsApis=Direct3D12;StrideSkipAutoPack=true;StrideSkipUnitTests=true"/>
   </Target>
 
-  <Target Name="BuildWindowsOpenGL">
-    <PropertyGroup>
-      <StrideRuntimeSolution>$(StrideRoot)build\Stride.Runtime.slnf</StrideRuntimeSolution>
-    </PropertyGroup>
-    <MSBuild Targets="Restore" Projects="$(MSBuildThisFileFullPath)" Properties="StridePlatforms=$(StridePlatforms);StrideSolution=$(StrideRuntimeSolution);StrideGraphicsApis=OpenGL"/>
-    <MSBuild Targets="Build" Projects="$(StrideRuntimeSolution)" Properties="$(BuildProperties);StrideGraphicsApis=OpenGL;StrideSkipAutoPack=true;StrideSkipUnitTests=true"/>
-  </Target>
-
-  <Target Name="BuildWindowsOpenGLES">
-    <PropertyGroup>
-      <StrideRuntimeSolution>$(StrideRoot)build\Stride.Runtime.slnf</StrideRuntimeSolution>
-    </PropertyGroup>
-    <MSBuild Targets="Restore" Projects="$(MSBuildThisFileFullPath)" Properties="StridePlatforms=$(StridePlatforms);StrideSolution=$(StrideRuntimeSolution);StrideGraphicsApis=OpenGLES"/>
-    <MSBuild Targets="Build" Projects="$(StrideRuntimeSolution)" Properties="$(BuildProperties);StrideGraphicsApis=OpenGLES;StrideSkipAutoPack=true;StrideSkipUnitTests=true"/>
-  </Target>
-
   <Target Name="BuildAndroid">
     <PropertyGroup>
       <StrideAndroidSolution>$(StrideRoot)build\Stride.Android.slnf</StrideAndroidSolution>
@@ -232,16 +216,7 @@ Example of use:
       <StridePlatforms>Linux</StridePlatforms>
     </PropertyGroup>
     <MSBuild Targets="Restore" Projects="$(MSBuildThisFileFullPath)" Properties="StridePlatforms=$(StridePlatforms);StrideSolution=$(StrideRuntimeSolution);StrideGraphicsApiDependentBuildAll=$(StrideGraphicsApiDependentBuildAll)"/>
-    <MSBuild Targets="Build" Projects="$(StrideRuntimeSolution)" Properties="$(BuildProperties);StridePlatforms=$(StridePlatforms);StrideGraphicsApis=OpenGL;StrideSkipAutoPack=true;StrideSkipUnitTests=true;StrideGraphicsApiDependentBuildAll=$(StrideGraphicsApiDependentBuildAll)"/>
-  </Target>
-
-  <Target Name="BuildLinuxVulkan">
-    <PropertyGroup>
-      <StrideRuntimeSolution>$(StrideRoot)build\Stride.Runtime.slnf</StrideRuntimeSolution>
-      <StridePlatforms>Linux</StridePlatforms>
-    </PropertyGroup>
-    <MSBuild Targets="Restore" Projects="$(MSBuildThisFileFullPath)" Properties="StridePlatforms=$(StridePlatforms);StrideSolution=$(StrideRuntimeSolution);StrideGraphicsApis=Vulkan"/>
-    <MSBuild Targets="Build" Projects="$(StrideRuntimeSolution)" Properties="$(BuildProperties);StridePlatforms=$(StridePlatforms);StrideGraphicsApis=Vulkan;StrideSkipAutoPack=true;StrideSkipUnitTests=true"/>
+    <MSBuild Targets="Build" Projects="$(StrideSolution).sln" Properties="$(BuildProperties);StridePlatforms=$(StridePlatforms);StrideSkipAutoPack=true;StrideSkipUnitTests=true;StrideGraphicsApiDependentBuildAll=$(StrideGraphicsApiDependentBuildAll)"/>
   </Target>
 
   <Target Name="BuildmacOS">
@@ -295,13 +270,13 @@ Example of use:
   </ItemGroup>
 
   <ItemGroup>
-    <MobileUnitTestApk Include="$(StrideRoot)\Bin\Android\Tests\OpenGLES\Stride.Engine.Tests\Stride.Engine.Tests-Signed.apk"/>
-    <MobileUnitTestApk Include="$(StrideRoot)\Bin\Android\Tests\OpenGLES\Stride.Physics.Tests\Stride.Physics.Tests-Signed.apk"/>
-    <MobileUnitTestApk Include="$(StrideRoot)\Bin\Android\Tests\OpenGLES\Stride.Audio.Tests\Stride.Audio.Tests-Signed.apk"/>
-    <MobileUnitTestApk Include="$(StrideRoot)\Bin\Android\Tests\OpenGLES\Stride.Graphics.Tests.10_0\Stride.Graphics.Tests_10_0-Signed.apk"/>
-    <MobileUnitTestApk Include="$(StrideRoot)\Bin\Android\Tests\OpenGLES\Stride.Graphics.Tests\Stride.Graphics.Tests-Signed.apk"/>
-    <MobileUnitTestApk Include="$(StrideRoot)\Bin\Android\Tests\OpenGLES\Stride.Input.Tests\Stride.Input.Tests-Signed.apk"/>
-    <MobileUnitTestApk Include="$(StrideRoot)\Bin\Android\Tests\OpenGLES\Stride.Particles.Tests\Stride.Particles.Tests-Signed.apk"/>
+    <MobileUnitTestApk Include="$(StrideRoot)\Bin\Android\Tests\Vulkan\Stride.Engine.Tests\Stride.Engine.Tests-Signed.apk"/>
+    <MobileUnitTestApk Include="$(StrideRoot)\Bin\Android\Tests\Vulkan\Stride.Physics.Tests\Stride.Physics.Tests-Signed.apk"/>
+    <MobileUnitTestApk Include="$(StrideRoot)\Bin\Android\Tests\Vulkan\Stride.Audio.Tests\Stride.Audio.Tests-Signed.apk"/>
+    <MobileUnitTestApk Include="$(StrideRoot)\Bin\Android\Tests\Vulkan\Stride.Graphics.Tests.10_0\Stride.Graphics.Tests_10_0-Signed.apk"/>
+    <MobileUnitTestApk Include="$(StrideRoot)\Bin\Android\Tests\Vulkan\Stride.Graphics.Tests\Stride.Graphics.Tests-Signed.apk"/>
+    <MobileUnitTestApk Include="$(StrideRoot)\Bin\Android\Tests\Vulkan\Stride.Input.Tests\Stride.Input.Tests-Signed.apk"/>
+    <MobileUnitTestApk Include="$(StrideRoot)\Bin\Android\Tests\Vulkan\Stride.Particles.Tests\Stride.Particles.Tests-Signed.apk"/>
   </ItemGroup>
 
   <Target Name="RunTestsMobile" DependsOnTargets="DownloadXunitRunnerConsole" Outputs="%(MobileUnitTestProject.Identity)">

build/docs/SDK-GUIDE.md

@@ -140,7 +140,7 @@ Use `git` to revert the project file changes (all 125 `.csproj` files). The dire
 
 **Step 5 — Re-add `BuildSdk` target to `build/Stride.build`:**
 
-Restore the target and add `DependsOnTargets="BuildSdk"` (or `BuildSdk;` prefix where multiple dependencies exist) to: `Build`, `BuildRuntime`, `BuildWindows`, `BuildWindowsDirect3D11`, `BuildWindowsDirect3D12`, `BuildWindowsOpenGL`, `BuildWindowsOpenGLES`, `BuildAndroid`, `BuildiOS`, `BuildUWP`, `BuildWindowsVulkan`, `BuildLinux`, `BuildLinuxVulkan`, `BuildmacOS`, `BuildLauncher`, `RunTestsWindows`, `RunTestsMobile`.
+Restore the target and add `DependsOnTargets="BuildSdk"` (or `BuildSdk;` prefix where multiple dependencies exist) to: `Build`, `BuildRuntime`, `BuildWindows`, `BuildWindowsDirect3D11`, `BuildWindowsDirect3D12`, `BuildAndroid`, `BuildiOS`, `BuildUWP`, `BuildWindowsVulkan`, `BuildLinux`, `BuildmacOS`, `BuildLauncher`, `RunTestsWindows`, `RunTestsMobile`.
 
 ```xml
 <!--
@@ -354,7 +354,7 @@ Stride.Build.Sdk/Sdk/Sdk.targets (top)
 
 | Property | Purpose | Set by |
 |----------|---------|--------|
-| `StrideGraphicsApi` | Current API (Direct3D11, Direct3D12, OpenGL, OpenGLES, Vulkan) | Stride.Graphics.props (platform default) |
+| `StrideGraphicsApi` | Current API (Direct3D11, Direct3D12, Vulkan) | Stride.Graphics.props (platform default) |
 | `StrideGraphicsApis` | Semicolon-separated list of target APIs | Stride.Graphics.props |
 | `StrideDefaultGraphicsApi` | Default/fallback API for the platform | Stride.Graphics.props |
 | `StrideGraphicsApiDependent` | Enable multi-API inner builds | Project (.csproj) |
@@ -364,20 +364,18 @@ Stride.Build.Sdk/Sdk/Sdk.targets (top)
 
 | Platform | Default | Available |
 |----------|---------|-----------|
-| Windows | Direct3D11 | Direct3D11, Direct3D12, OpenGL, OpenGLES, Vulkan |
-| Linux | OpenGL | OpenGL, Vulkan |
+| Windows | Direct3D11 | Direct3D11, Direct3D12,Vulkan |
+| Linux | Vulkan | Vulkan |
 | macOS | Vulkan | Vulkan |
-| Android | OpenGLES | OpenGLES, Vulkan |
-| iOS | OpenGLES | OpenGLES |
+| Android | VUlkan | Vulkan |
+| iOS | Vulkan | Vulkan |
 
 **Graphics API defines** (added to `DefineConstants`):
 
 | API | Defines |
 |-----|---------|
 | Direct3D11 | `STRIDE_GRAPHICS_API_DIRECT3D;STRIDE_GRAPHICS_API_DIRECT3D11` |
 | Direct3D12 | `STRIDE_GRAPHICS_API_DIRECT3D;STRIDE_GRAPHICS_API_DIRECT3D12` |
-| OpenGL | `STRIDE_GRAPHICS_API_OPENGL;STRIDE_GRAPHICS_API_OPENGLCORE` |
-| OpenGLES | `STRIDE_GRAPHICS_API_OPENGL;STRIDE_GRAPHICS_API_OPENGLES` |
 | Vulkan | `STRIDE_GRAPHICS_API_VULKAN` |
 
 ### Build Control

sources/Directory.Packages.props

@@ -28,9 +28,6 @@
     <PackageVersion Include="Silk.NET.Direct3D11" Version="2.22.0" />
     <PackageVersion Include="Silk.NET.Direct3D12" Version="2.22.0" />
     <PackageVersion Include="Silk.NET.Direct3D.Compilers" Version="2.22.0" />
-    <PackageVersion Include="Silk.NET.OpenGL" Version="2.22.0" />
-    <PackageVersion Include="Silk.NET.OpenGLES" Version="2.22.0" />
-    <PackageVersion Include="Silk.NET.OpenGLES.Extensions.EXT" Version="2.22.0" />
     <PackageVersion Include="Silk.NET.OpenXR" Version="2.22.0" />
     <PackageVersion Include="Silk.NET.OpenXR.Extensions.FB" Version="2.22.0" />
     <PackageVersion Include="Silk.NET.Sdl" Version="2.22.0" />

sources/engine/Stride.Assets/AssetCompilerContextExtensions.cs

@@ -49,9 +49,7 @@ public static GraphicsPlatform GetDefaultGraphicsPlatform(this PlatformType plat
                     return GraphicsPlatform.Direct3D11;
                 case PlatformType.Android:
                 case PlatformType.iOS:
-                    return GraphicsPlatform.OpenGLES;
                 case PlatformType.Linux:
-                    return GraphicsPlatform.OpenGL;
                 case PlatformType.macOS:
                     return GraphicsPlatform.Vulkan;
                 default:

sources/engine/Stride.Assets/Effect/EffectBytecodeToSourceCodeWriter.cs

@@ -65,8 +65,6 @@ public static void Write(string name, CompilerParameters parameters, EffectBytec
         {
             GraphicsPlatform.Direct3D11 or
             GraphicsPlatform.Direct3D12 => "STRIDE_GRAPHICS_API_DIRECT3D",
-            GraphicsPlatform.OpenGL => "STRIDE_GRAPHICS_API_OPENGLCORE",
-            GraphicsPlatform.OpenGLES => "STRIDE_GRAPHICS_API_OPENGLES",
             GraphicsPlatform.Vulkan => "STRIDE_GRAPHICS_API_VULKAN",
 
             _ => "undefined"

sources/engine/Stride.Assets/Textures/TextureHelper.cs

@@ -257,7 +257,6 @@ public static PixelFormat DetermineOutputFormat(ImportParameters parameters, Siz
                             {
                                 case GraphicsPlatform.Direct3D11:
                                 case GraphicsPlatform.Direct3D12:
-                                case GraphicsPlatform.OpenGL:
                                 case GraphicsPlatform.Vulkan:
 
                                     // https://msdn.microsoft.com/en-us/library/windows/desktop/hh308955%28v=vs.85%29.aspx
@@ -296,11 +295,11 @@ public static PixelFormat DetermineOutputFormat(ImportParameters parameters, Siz
                                     // Support some specific optimized formats based on the hint or input type
                                     if (parameters.GraphicsProfile >= GraphicsProfile.Level_10_0)
                                     {
-                                        if (parameters.GraphicsPlatform != GraphicsPlatform.OpenGL && hint == TextureHint.NormalMap)
+                                        if (hint == TextureHint.NormalMap)
                                         {
                                             outputFormat = PixelFormat.BC5_UNorm;
                                         }
-                                        else if (parameters.GraphicsPlatform != GraphicsPlatform.OpenGL && hint == TextureHint.Grayscale)
+                                        else if (hint == TextureHint.Grayscale)
                                         {
                                             outputFormat = PixelFormat.BC4_UNorm;
                                         }
@@ -313,40 +312,8 @@ public static PixelFormat DetermineOutputFormat(ImportParameters parameters, Siz
                                         // TODO support the BC6/BC7 but they are so slow to compile that we can't use them right now
                                     }
                                     break;
-                                case GraphicsPlatform.OpenGLES: // OpenGLES on Windows
-                                    if (inputImageFormat.IsHDR)
-                                    {
-                                        outputFormat = inputImageFormat;
-                                    }
-                                    else if (parameters.IsSRgb)
-                                    {
-                                        outputFormat = PixelFormat.R8G8B8A8_UNorm_SRgb;
-                                    }
-                                    else
-                                    {
-                                        switch (parameters.GraphicsProfile)
-                                        {
-                                            case GraphicsProfile.Level_9_1:
-                                            case GraphicsProfile.Level_9_2:
-                                            case GraphicsProfile.Level_9_3:
-                                                outputFormat = alphaMode == AlphaFormat.None ? PixelFormat.ETC1 : PixelFormat.R8G8B8A8_UNorm;
-                                                break;
-                                            case GraphicsProfile.Level_10_0:
-                                            case GraphicsProfile.Level_10_1:
-                                            case GraphicsProfile.Level_11_0:
-                                            case GraphicsProfile.Level_11_1:
-                                            case GraphicsProfile.Level_11_2:
-                                                // GLES3.0 starting from Level_10_0, this profile enables ETC2 compression on Android
-                                                outputFormat = alphaMode == AlphaFormat.None ? PixelFormat.ETC1 : PixelFormat.ETC2_RGBA;
-                                                break;
-                                            default:
-                                                throw new ArgumentOutOfRangeException("GraphicsProfile");
-                                        }
-                                    }
-                                    break;
                                 default:
-                                    // OpenGL on Windows
-                                    // TODO: Need to handle OpenGL Desktop compression
+                                    // Null platform
                                     outputFormat = parameters.IsSRgb ? PixelFormat.R8G8B8A8_UNorm_SRgb : PixelFormat.R8G8B8A8_UNorm;
                                     break;
                             }
@@ -363,32 +330,6 @@ public static PixelFormat DetermineOutputFormat(ImportParameters parameters, Siz
                     throw new ArgumentOutOfRangeException();
             }
 
-            // OpenGLES: avoid BGRA (optional extension)
-            if (parameters.GraphicsPlatform == GraphicsPlatform.OpenGLES)
-            {
-                switch (outputFormat)
-                {
-                    case PixelFormat.B8G8R8A8_UNorm:
-                        outputFormat = PixelFormat.R8G8B8A8_UNorm;
-                        break;
-                    case PixelFormat.B8G8R8A8_UNorm_SRgb:
-                        outputFormat = PixelFormat.R8G8B8A8_UNorm_SRgb;
-                        break;
-                }
-            }
-
-            // OpenGL and OpenGLES: avoid R5G6B5 (not implemented)
-            if (parameters.GraphicsPlatform == GraphicsPlatform.OpenGLES || parameters.GraphicsPlatform == GraphicsPlatform.OpenGL)
-            {
-                switch (outputFormat)
-                {
-                    case PixelFormat.B5G5R5A1_UNorm:
-                    case PixelFormat.B5G6R5_UNorm:
-                        outputFormat = PixelFormat.R8G8B8A8_UNorm;
-                        break;
-                }
-            }
-
             return outputFormat;
         }
 

sources/engine/Stride.Assets/WindowsGameSettingsProfile.cs

@@ -21,7 +21,7 @@ public WindowsGameSettingsProfile()
 
         public override IEnumerable<GraphicsPlatform> GetSupportedGraphicsPlatforms()
         {
-            return new[] { GraphicsPlatform.Direct3D11, GraphicsPlatform.OpenGL, GraphicsPlatform.OpenGLES, };
+            return [GraphicsPlatform.Direct3D11];
         }
     }
 }

sources/engine/Stride.Engine.Tests/TesselationTest.cs

@@ -210,8 +210,6 @@ private void ChangeMaterial(int i)
         [SkippableFact]
         public void RunTestGame()
         {
-            SkipTestForGraphicPlatform(GraphicsPlatform.OpenGL);
-            SkipTestForGraphicPlatform(GraphicsPlatform.OpenGLES);
             SkipTestForGraphicPlatform(GraphicsPlatform.Vulkan);
             // Note: D3D12 WARP tessellation is limited to first frame only (see RegisterTests)
 

sources/engine/Stride.Engine/Rendering/Compositing/ForwardRenderer.cs

@@ -138,12 +138,8 @@ protected override void InitializeCore()
                 actualMultisampleCount = (MultisampleCount)Math.Min((int)actualMultisampleCount, (int)GraphicsDevice.Features[DepthBufferFormat].MultisampleCountMax);
 
                 // Note: we cannot support MSAA on DX10 now
-                if (GraphicsDevice.Features.HasMultiSampleDepthAsSRV == false && // TODO: Try enabling MSAA on DX9!
-                    GraphicsDevice.Platform != GraphicsPlatform.OpenGL &&
-                    GraphicsDevice.Platform != GraphicsPlatform.OpenGLES)
+                if (GraphicsDevice.Features.HasMultiSampleDepthAsSRV == false)
                 {
-                    // OpenGL has MSAA support on every version.
-                    // OpenGL ES has MSAA support starting from version 3.0.
                     // Direct3D has MSAA support starting from version 11 because it requires multisample depth buffers as shader resource views.
                     // Therefore we force-disable MSAA on any platform that doesn't support MSAA.