src/dawn/native/webgpu/ToWGPU.h

// Copyright 2025 The Dawn & Tint Authors
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#ifndef SRC_DAWN_NATIVE_WEBGPU_TOWGPU_H_
#define SRC_DAWN_NATIVE_WEBGPU_TOWGPU_H_

#include <webgpu/webgpu.h>
#include <string>
#include <vector>
#include "dawn/native/ShaderModule.h"
#include "dawn/native/wgpu_structs_autogen.h"

// A bunch of ToWGPU helper functions to convert dawn::native descriptors to WGPU C descriptors.

namespace dawn::native {

class BufferBase;
struct BufferCopy;
struct RenderPassColorAttachmentInfo;
struct RenderPassDepthStencilAttachmentInfo;
struct TexelOrigin3D;
struct TexelExtent3D;
struct TextureCopy;
struct TimestampWrites;
struct TypedTexelBlockInfo;
struct Origin2D;
struct Extent2D;

}  // namespace dawn::native

namespace dawn::native::webgpu {

WGPUBlendState ToWGPU(const BlendState* desc);
WGPUColor ToWGPU(const dawn::native::Color& color);
WGPUDepthStencilState ToWGPU(const DepthStencilState* desc);
WGPUExtent3D ToWGPU(const TexelExtent3D& extent);
WGPUOrigin2D ToWGPU(const Origin2D& origin);
WGPUExtent2D ToWGPU(const Extent2D& extent);
WGPUIndexFormat ToWGPU(const wgpu::IndexFormat format);
WGPULoadOp ToWGPU(const wgpu::LoadOp op);
WGPUMultisampleState ToWGPU(const MultisampleState* desc);
WGPUOrigin3D ToWGPU(const TexelOrigin3D& origin);
WGPUPassTimestampWrites ToWGPU(const TimestampWrites& writes);
WGPUPrimitiveState ToWGPU(const PrimitiveState* desc);
WGPURenderPassColorAttachment ToWGPU(const RenderPassColorAttachmentInfo& info);
WGPURenderPassDepthStencilAttachment ToWGPU(const RenderPassDepthStencilAttachmentInfo& info);
WGPUStencilFaceState ToWGPU(const StencilFaceState* desc);
WGPUStencilFaceState ToWGPU(const StencilFaceState* desc);
WGPUStoreOp ToWGPU(const wgpu::StoreOp op);
WGPUTexelCopyBufferInfo ToWGPU(const BufferCopy& copy, const TypedTexelBlockInfo& blockInfo);
WGPUTexelCopyBufferInfo ToWGPU(const TexelCopyBufferLayout& copy, const BufferBase* buffer);
WGPUTexelCopyBufferLayout ToWGPU(const TexelCopyBufferLayout& copy);
WGPUTexelCopyTextureInfo ToWGPU(const TextureCopy& copy);
WGPUTextureAspect ToWGPU(const Aspect aspect);

// A vector of keys need to pass alongside constants to preserve the memory of WGPUStringView data
// pointer.
void PopulateWGPUConstants(std::vector<WGPUConstantEntry>* constants,
                           std::vector<std::string>* keys,
                           const PipelineConstantEntries& entries);

}  // namespace dawn::native::webgpu

#endif  // SRC_DAWN_NATIVE_WEBGPU_TOWGPU_H_