Add initial base implementation for WebGPU rendering backend

Source/Engine/Graphics/Enums.h

@@ -75,6 +75,11 @@ API_ENUM() enum class RendererType
     /// </summary>
     PS5 = 12,
 
+    /// <summary>
+    /// WebGPU
+    /// </summary>
+    WebGPU = 13,
+
     API_ENUM(Attributes="HideInEditor")
     MAX
 };
@@ -131,6 +136,11 @@ API_ENUM() enum class ShaderProfile
     /// </summary>
     PS5 = 8,
 
+    /// <summary>
+    /// WebGPU
+    /// </summary>
+    WebGPU = 9,
+
     API_ENUM(Attributes="HideInEditor")
     MAX
 };

Source/Engine/Graphics/Graphics.Build.cs

@@ -97,8 +97,7 @@ public class Graphics : EngineModule
                 Log.WarningOnce(string.Format("Building for {0} without Vulkan rendering backend (Vulkan SDK is missing)", options.Platform.Target), ref _logMissingVulkanSDK);
             break;
         case TargetPlatform.Web:
-            options.PrivateDependencies.Add("GraphicsDeviceNull");
-            // TODO: add WebGPU
+            options.PrivateDependencies.Add("GraphicsDeviceWebGPU");
             break;
         default: throw new InvalidPlatformException(options.Platform.Target);
         }

Source/Engine/Graphics/Graphics.cpp

@@ -175,6 +175,11 @@ bool GraphicsService::Init()
         extern GPUDevice* CreateGPUDevicePS5();
         if (!device)
             device = CreateGPUDevicePS5();
+#endif
+#if GRAPHICS_API_WEBGPU
+        extern GPUDevice* CreateGPUDeviceWebGPU();
+        if (!device)
+            device = CreateGPUDeviceWebGPU();
 #endif
     }
 

Source/Engine/Graphics/RenderTools.cpp

@@ -58,6 +58,9 @@ const Char* ToString(RendererType value)
     case RendererType::PS5:
         result = TEXT("PS5");
         break;
+    case RendererType::WebGPU:
+        result = TEXT("WebGPU");
+        break;
     default:
         result = TEXT("?");
     }
@@ -96,6 +99,9 @@ const Char* ToString(ShaderProfile value)
     case ShaderProfile::PS5:
         result = TEXT("PS5");
         break;
+    case ShaderProfile::WebGPU:
+        result = TEXT("WebGPU");
+        break;
     default:
         result = TEXT("?");
     }
@@ -268,6 +274,7 @@ FeatureLevel RenderTools::GetFeatureLevel(ShaderProfile profile)
     case ShaderProfile::GLSL_440:
     case ShaderProfile::GLSL_410:
     case ShaderProfile::Unknown:
+    case ShaderProfile::WebGPU:
         return FeatureLevel::ES2;
     default:
         return FeatureLevel::ES2;

Source/Engine/Graphics/Shaders/Cache/ShaderCacheManager.cpp

@@ -27,6 +27,7 @@ const Char* ShaderProfileCacheDirNames[] =
     TEXT("PS4"), // PS4
     TEXT("DX_SM6"), // DirectX_SM6
     TEXT("PS5"), // PS5
+    TEXT("WEB"), // WebGPU
     // @formatter:on
 };
 

Source/Engine/Graphics/Textures/GPUSampler.cpp

@@ -19,6 +19,7 @@ void GPUSamplerDescription::Clear()
 {
     Platform::MemoryClear(this, sizeof(GPUSamplerDescription));
     MaxMipLevel = MAX_float;
+    MaxAnisotropy = 1.0f;
 }
 
 bool GPUSamplerDescription::Equals(const GPUSamplerDescription& other) const