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Add shader compiler for WebGPU

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Use existing Vulkan compiler to generate SPIR-V and convert it into WGSL with tint compiler
https://github.com/google/dawn/releases/tag/v20260219.200501
This commit is contained in:
Wojtek Figat
2026-02-24 17:55:26 +01:00
parent 9158e1c270
commit 9be8589437
17 changed files with 337 additions and 50 deletions
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28
Source/Engine/GraphicsDevice/WebGPU/GPUPipelineStateWebGPU.cpp
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@@ -166,8 +166,14 @@ WGPURenderPipeline GPUPipelineStateWebGPU::GetPipeline(const Key& key)
for (int32 i = 0; i < _fragmentDesc.targetCount; i++)
_colorTargets[i].format = (WGPUTextureFormat)key.RenderTargetFormats[i];
WGPUVertexBufferLayout buffers[GPU_MAX_VB_BINDED];
PipelineDesc.vertex.bufferCount = key.VertexBufferCount;
int32 shaderLocation = 0;
for (int32 i = 0; i < PipelineDesc.vertex.bufferCount; i++)
{
buffers[i] = *key.VertexBuffers[i];
for (int32 j = 0; j < buffers[i].attributeCount; j++)
((WGPUVertexAttribute&)buffers[i].attributes[j]).shaderLocation = shaderLocation++;
}
PipelineDesc.vertex.buffers = buffers;
// Create object
@@ -196,13 +202,10 @@ bool GPUPipelineStateWebGPU::Init(const Description& desc)
if (IsValid())
OnReleaseGPU();
// Cache shaders
VS = (GPUShaderProgramVSWebGPU*)desc.VS;
PS = (GPUShaderProgramPSWebGPU*)desc.PS;
// Initialize description (without dynamic state from context such as render targets, vertex buffers, etc.)
PipelineDesc = WGPU_RENDER_PIPELINE_DESCRIPTOR_INIT;
#if GPU_ENABLE_RESOURCE_NAMING
DebugDesc = desc;
GetDebugName(_debugName);
PipelineDesc.label = { _debugName.Get(), (size_t)_debugName.Count() - 1 };
#endif
@@ -257,17 +260,24 @@ bool GPUPipelineStateWebGPU::Init(const Description& desc)
writeMask |= WGPUColorWriteMask_Blue;
if (EnumHasAllFlags(desc.BlendMode.RenderTargetWriteMask, BlendingMode::ColorWrite::Alpha))
writeMask |= WGPUColorWriteMask_Alpha;
}
for (auto& e : _colorTargets)
} for (auto& e : _colorTargets)
{
e = WGPU_COLOR_TARGET_STATE_INIT;
e.blend = &_blendState;
if (desc.BlendMode.BlendEnable)
e.blend = &_blendState;
e.writeMask = writeMask;
}
// Cache shaders
VS = (GPUShaderProgramVSWebGPU*)desc.VS;
PipelineDesc.vertex.module = VS->ShaderModule;
PS = (GPUShaderProgramPSWebGPU*)desc.PS;
if (PS)
{
_fragmentDesc.module = PS->ShaderModule;
}
// TODO: set resources binding into PipelineDesc.layout
// TODO: set vertex shader into PipelineDesc.vertex
// TODO: set pixel shader into PipelineDesc.fragment
_memoryUsage = 1;
return GPUPipelineState::Init(desc);