src/dawn/native/metal/ShaderModuleMTL.h

// Copyright 2017 The Dawn & Tint Authors
//
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// modification, are permitted provided that the following conditions are met:
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// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
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//    this list of conditions and the following disclaimer in the documentation
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#ifndef SRC_DAWN_NATIVE_METAL_SHADERMODULEMTL_H_
#define SRC_DAWN_NATIVE_METAL_SHADERMODULEMTL_H_

#include <string>
#include <vector>

#include "dawn/native/ShaderModule.h"

#include "dawn/common/NSRef.h"
#include "dawn/native/Error.h"

#import <Metal/Metal.h>

namespace dawn::native {
struct ProgrammableStage;
}

namespace dawn::native::metal {

class Device;
class PipelineLayout;
class RenderPipeline;

class ShaderModule final : public ShaderModuleBase {
  public:
    static ResultOrError<Ref<ShaderModule>> Create(
        Device* device,
        const UnpackedPtr<ShaderModuleDescriptor>& descriptor,
        ShaderModuleParseResult* parseResult,
        OwnedCompilationMessages* compilationMessages);

    struct MetalFunctionData {
        NSPRef<id<MTLFunction>> function;
        bool needsStorageBufferLength;
        std::vector<uint32_t> workgroupAllocations;
        MTLSize localWorkgroupSize;
    };

    MaybeError CreateFunction(
        SingleShaderStage stage,
        const ProgrammableStage& programmableStage,
        const PipelineLayout* layout,
        MetalFunctionData* out,
        uint32_t sampleMask = 0xFFFFFFFF,
        const RenderPipeline* renderPipeline = nullptr,
        std::optional<uint32_t> maxSubgroupSizeForFullSubgroups = std::nullopt);

  private:
    ShaderModule(Device* device, const UnpackedPtr<ShaderModuleDescriptor>& descriptor);
    ~ShaderModule() override;
    MaybeError Initialize(ShaderModuleParseResult* parseResult,
                          OwnedCompilationMessages* compilationMessages);
};

}  // namespace dawn::native::metal

#endif  // SRC_DAWN_NATIVE_METAL_SHADERMODULEMTL_H_