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Implement bind groups in WebGPU to provide resources to shaders

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This commit is contained in:
Wojtek Figat
2026-02-25 18:22:55 +01:00
parent 9d95bbaa8c
commit b535791c66
9 changed files with 444 additions and 125 deletions
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17
Source/Engine/GraphicsDevice/WebGPU/GPUDeviceWebGPU.cpp
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@@ -45,13 +45,13 @@ GPUVertexLayoutWebGPU::GPUVertexLayoutWebGPU(GPUDeviceWebGPU* device, const Elem
}
}
GPUDataUploaderWebGPU::Allocation GPUDataUploaderWebGPU::Allocate(uint32 size, uint32 alignment, WGPUBufferUsage usage)
GPUDataUploaderWebGPU::Allocation GPUDataUploaderWebGPU::Allocate(uint32 size, WGPUBufferUsage usage, uint32 alignment)
{
// Find a free buffer from the current frame
for (auto& e : _entries)
{
uint32 alignedOffset = Math::AlignUp(e.ActiveOffset, alignment);
if (e.ActiveFrame == _frame && (usage ? (e.Usage & usage) == usage : e.Usage == WGPUBufferUsage_CopyDst) && alignedOffset + size <= e.Size)
if (e.ActiveFrame == _frame && e.Usage == usage && alignedOffset + size <= e.Size)
{
e.ActiveOffset = alignedOffset + size;
return { e.Buffer, alignedOffset };
@@ -61,7 +61,7 @@ GPUDataUploaderWebGPU::Allocation GPUDataUploaderWebGPU::Allocate(uint32 size, u
// Find an unused buffer from the old frames
for (auto& e : _entries)
{
if (e.ActiveFrame < _frame - 3 && (e.Usage & usage) == usage && size <= e.Size)
if (e.ActiveFrame < _frame - 3 && e.Usage == usage && size <= e.Size)
{
e.ActiveOffset = size;
e.ActiveFrame = _frame;
@@ -79,7 +79,7 @@ GPUDataUploaderWebGPU::Allocation GPUDataUploaderWebGPU::Allocate(uint32 size, u
desc.label = WEBGPU_STR("Upload Buffer");
#endif
desc.size = Math::Max<uint32>(16 * 1024, Math::RoundUpToPowerOf2(size)); // Allocate larger pages for good suballocations
desc.usage = WGPUBufferUsage_CopyDst | usage;
desc.usage = usage;
WGPUBuffer buffer = wgpuDeviceCreateBuffer(_device, &desc);
if (buffer == nullptr)
{
@@ -490,6 +490,14 @@ void GPUDeviceWebGPU::DrawBegin()
GPUDevice::DrawBegin();
DataUploader.DrawBegin();
// Create default texture
if (!DefaultTexture)
{
DefaultTexture = New<GPUTextureWebGPU>(this, TEXT("DefaultTexture"));
DefaultTexture->Init(GPUTextureDescription::New2D(1, 1, PixelFormat::R8G8B8A8_UNorm, GPUTextureFlags::ShaderResource));
DefaultTexture->SetResidentMipLevels(1);
}
}
GPUDeviceWebGPU::~GPUDeviceWebGPU()
@@ -565,6 +573,7 @@ void GPUDeviceWebGPU::Dispose()
// Clear device resources
DataUploader.ReleaseGPU();
SAFE_DELETE_GPU_RESOURCE(DefaultTexture);
SAFE_DELETE_GPU_RESOURCES(DefaultSamplers);
SAFE_DELETE(_mainContext);
SAFE_DELETE(Adapter);