From ac4526744af59f4ae4cf301cb7d815f951bdbec6 Mon Sep 17 00:00:00 2001
From: Wojtek Figat <wojtek@figat.pl>
Date: Thu, 26 Feb 2026 11:08:12 +0100
Subject: [PATCH] Add GPU profile events to WebGPU and use the by default in
 non-Release builds

---
 .../WebGPU/GPUContextWebGPU.cpp               | 21 +++++++++++++++++++
 .../GraphicsDevice/WebGPU/GPUContextWebGPU.h  |  6 +++++-
 Source/Engine/Platform/Web/WebDefines.h       |  3 ++-
 Source/Engine/Profiler/ProfilerGPU.cpp        |  4 ++++
 4 files changed, 32 insertions(+), 2 deletions(-)

diff --git a/Source/Engine/GraphicsDevice/WebGPU/GPUContextWebGPU.cpp b/Source/Engine/GraphicsDevice/WebGPU/GPUContextWebGPU.cpp
index 9e24286aa..2111d9629 100644
--- a/Source/Engine/GraphicsDevice/WebGPU/GPUContextWebGPU.cpp
+++ b/Source/Engine/GraphicsDevice/WebGPU/GPUContextWebGPU.cpp
@@ -115,6 +115,27 @@ void GPUContextWebGPU::FrameEnd()
     Flush();
 }
 
+#if GPU_ALLOW_PROFILE_EVENTS
+
+#include "Engine/Utilities/StringConverter.h"
+
+void GPUContextWebGPU::EventBegin(const Char* name)
+{
+    StringAsANSI<> nameAnsi(name);
+    wgpuCommandEncoderPushDebugGroup(Encoder, { nameAnsi.Get(), (size_t)nameAnsi.Length() });
+}
+
+void GPUContextWebGPU::EventEnd()
+{
+    // Cannot insert commands in encoder during render pass
+    if (_renderPass)
+        EndRenderPass();
+
+    wgpuCommandEncoderPopDebugGroup(Encoder);
+}
+
+#endif
+
 void* GPUContextWebGPU::GetNativePtr() const
 {
     return Encoder;
diff --git a/Source/Engine/GraphicsDevice/WebGPU/GPUContextWebGPU.h b/Source/Engine/GraphicsDevice/WebGPU/GPUContextWebGPU.h
index c13c8e8c6..0b8852e51 100644
--- a/Source/Engine/GraphicsDevice/WebGPU/GPUContextWebGPU.h
+++ b/Source/Engine/GraphicsDevice/WebGPU/GPUContextWebGPU.h
@@ -57,7 +57,7 @@ private:
     int32 _indexBuffer32Bit : 1;
     int32 _blendFactorDirty : 1;
     int32 _blendFactorSet : 1;
-    int32 _renderTargetCount : 3;
+    int32 _renderTargetCount : 4;
     int32 _vertexBufferCount : 3;
     uint32 _stencilRef;
     Float4 _blendFactor;
@@ -97,6 +97,10 @@ public:
     // [GPUContext]
     void FrameBegin() override;
     void FrameEnd() override;
+#if GPU_ALLOW_PROFILE_EVENTS
+    void EventBegin(const Char* name) override;
+    void EventEnd() override;
+#endif
     void* GetNativePtr() const override;
     bool IsDepthBufferBinded() override;
     void Clear(GPUTextureView* rt, const Color& color) override;
diff --git a/Source/Engine/Platform/Web/WebDefines.h b/Source/Engine/Platform/Web/WebDefines.h
index d5511d1f7..f52cf0e94 100644
--- a/Source/Engine/Platform/Web/WebDefines.h
+++ b/Source/Engine/Platform/Web/WebDefines.h
@@ -18,7 +18,8 @@
 // Configure graphics
 #define GPU_ALLOW_TESSELLATION_SHADERS 0
 #define GPU_ALLOW_GEOMETRY_SHADERS 0
-#define GPU_ALLOW_PROFILE_EVENTS 0
+//#define GPU_ALLOW_PROFILE_EVENTS 0
+#define GPU_AUTO_PROFILE_EVENTS (!BUILD_RELEASE)
 #define GPU_ENABLE_PRELOADING_RESOURCES 0 // Don't preload things unless needed
 
 // Threading is optional
diff --git a/Source/Engine/Profiler/ProfilerGPU.cpp b/Source/Engine/Profiler/ProfilerGPU.cpp
index 1ac51c83e..1ede560f7 100644
--- a/Source/Engine/Profiler/ProfilerGPU.cpp
+++ b/Source/Engine/Profiler/ProfilerGPU.cpp
@@ -16,7 +16,11 @@ RenderStatsData RenderStatsData::Counter;
 
 int32 ProfilerGPU::_depth = 0;
 bool ProfilerGPU::Enabled = false;
+#if GPU_AUTO_PROFILE_EVENTS
+bool ProfilerGPU::EventsEnabled = true;
+#else
 bool ProfilerGPU::EventsEnabled = false;
+#endif
 int32 ProfilerGPU::CurrentBuffer = 0;
 ProfilerGPU::EventBuffer ProfilerGPU::Buffers[PROFILER_GPU_EVENTS_FRAMES];