src/dawn/native/metal/ComputePipelineMTL.h

// Copyright 2017 The Dawn & Tint Authors
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#ifndef SRC_DAWN_NATIVE_METAL_COMPUTEPIPELINEMTL_H_
#define SRC_DAWN_NATIVE_METAL_COMPUTEPIPELINEMTL_H_

#include <vector>

#include "dawn/native/ComputePipeline.h"
#include "dawn/native/CreatePipelineAsyncEvent.h"

#include "dawn/common/NSRef.h"

#import <Metal/Metal.h>

namespace dawn::native::metal {

class Device;

class ComputePipeline final : public ComputePipelineBase {
  public:
    static Ref<ComputePipeline> CreateUninitialized(
        Device* device,
        const UnpackedPtr<ComputePipelineDescriptor>& descriptor);

    ComputePipeline(DeviceBase* device, const UnpackedPtr<ComputePipelineDescriptor>& descriptor);
    ~ComputePipeline() override;

    void Encode(id<MTLComputeCommandEncoder> encoder);
    MTLSize GetLocalWorkGroupSize() const;
    bool RequiresStorageBufferLength() const;

  private:
    using ComputePipelineBase::ComputePipelineBase;
    MaybeError InitializeImpl() override;

    NSPRef<id<MTLComputePipelineState>> mMtlComputePipelineState;
    MTLSize mLocalWorkgroupSize;
    bool mRequiresStorageBufferLength;
    std::vector<uint32_t> mWorkgroupAllocations;
};

}  // namespace dawn::native::metal

#endif  // SRC_DAWN_NATIVE_METAL_COMPUTEPIPELINEMTL_H_