ComputeQueueMTL.h

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// Jolt Physics Library (https://github.com/jrouwe/JoltPhysics)
// SPDX-FileCopyrightText: 2025 Jorrit Rouwe
// SPDX-License-Identifier: MIT
 
#pragma once
 
#ifdef JPH_USE_MTL
 
#include <MetalKit/MetalKit.h>
 
#include <Jolt/Compute/ComputeQueue.h>
 
JPH_NAMESPACE_BEGIN
 
class ComputeShaderMTL;

class JPH_EXPORT ComputeQueueMTL final : public ComputeQueue
{
public:
    JPH_OVERRIDE_NEW_DELETE

                                        ComputeQueueMTL(id<MTLDevice> inDevice);
    virtual                             ~ComputeQueueMTL() override;
 
    // See: ComputeQueue
    virtual void                        SetShader(const ComputeShader *inShader) override;
    virtual void                        SetConstantBuffer(const char *inName, const ComputeBuffer *inBuffer) override;
    virtual void                        SetBuffer(const char *inName, const ComputeBuffer *inBuffer) override;
    virtual void                        SetRWBuffer(const char *inName, ComputeBuffer *inBuffer, EBarrier inBarrier = EBarrier::Yes) override;
    virtual void                        ScheduleReadback(ComputeBuffer *inDst, const ComputeBuffer *inSrc) override;
    virtual void                        Dispatch(uint inThreadGroupsX, uint inThreadGroupsY, uint inThreadGroupsZ) override;
    virtual void                        Execute() override;
    virtual void                        Wait() override;
 
private:
    void                                BeginCommandBuffer();
 
    id<MTLCommandQueue>                 mCommandQueue;
    id<MTLCommandBuffer>                mCommandBuffer;
    id<MTLComputeCommandEncoder>        mComputeEncoder;
    RefConst<ComputeShaderMTL>          mShader;
    bool                                mIsExecuting = false;
};
 
JPH_NAMESPACE_END
 
#endif // JPH_USE_MTL