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Wojtek Figat
204
Source/Engine/GraphicsDevice/DirectX/DX12/GPUContextDX12.h
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204
Source/Engine/GraphicsDevice/DirectX/DX12/GPUContextDX12.h
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// Copyright (c) 2012-2020 Wojciech Figat. All rights reserved.
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#pragma once
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#include "Engine/Graphics/GPUContext.h"
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#include "IShaderResourceDX12.h"
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#include "DescriptorHeapDX12.h"
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#include "../IncludeDirectXHeaders.h"
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#if GRAPHICS_API_DIRECTX12
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class GPUDeviceDX12;
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class GPUPipelineStateDX12;
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class GPUBufferDX12;
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class GPUConstantBufferDX12;
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class GPUTextureViewDX12;
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/// <summary>
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/// Size of the resource barriers buffer size (will be flushed on overflow)
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/// </summary>
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#define DX12_RB_BUFFER_SIZE 16
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/// <summary>
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/// GPU Commands Context implementation for DirectX 12
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/// </summary>
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class GPUContextDX12 : public GPUContext
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{
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friend GPUDeviceDX12;
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public:
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typedef DescriptorHeapRingBufferDX12::Allocation Descriptor;
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private:
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GPUDeviceDX12* _device;
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ID3D12GraphicsCommandList* _commandList;
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ID3D12CommandAllocator* _currentAllocator;
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GPUPipelineStateDX12* _currentState;
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GPUShaderProgramCS* _currentCompute;
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int32 _swapChainsUsed;
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int32 _vbCount;
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int32 _rtCount;
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int32 _rbBufferSize;
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uint32 _srMaskDirtyGraphics;
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uint32 _srMaskDirtyCompute;
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uint32 _uaMaskDirtyGraphics;
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uint32 _uaMaskDirtyCompute;
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int32 _isCompute : 1;
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int32 _rtDirtyFlag : 1;
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int32 _psDirtyFlag : 1;
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int32 _cbDirtyFlag : 1;
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GPUTextureViewDX12* _rtDepth;
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GPUTextureViewDX12* _rtHandles[GPU_MAX_RT_BINDED];
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IShaderResourceDX12* _srHandles[GPU_MAX_SR_BINDED];
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IShaderResourceDX12* _uaHandles[GPU_MAX_UA_BINDED + 1];
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GPUBufferDX12* _ibHandle;
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GPUBufferDX12* _vbHandles[GPU_MAX_VB_BINDED];
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D3D12_INDEX_BUFFER_VIEW _ibView;
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D3D12_VERTEX_BUFFER_VIEW _vbViews[GPU_MAX_VB_BINDED];
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D3D12_RESOURCE_BARRIER _rbBuffer[DX12_RB_BUFFER_SIZE];
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GPUConstantBufferDX12* _cbHandles[GPU_MAX_CB_BINDED];
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public:
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/// <summary>
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/// Init
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/// </summary>
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/// <param name="device">Graphics device</param>
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/// <param name="type">Context type</param>
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GPUContextDX12(GPUDeviceDX12* device, D3D12_COMMAND_LIST_TYPE type);
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/// <summary>
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/// Destructor
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/// </summary>
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~GPUContextDX12();
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public:
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/// <summary>
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/// Gets command list
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/// </summary>
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/// <returns>Command list to use</returns>
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FORCE_INLINE ID3D12GraphicsCommandList* GetCommandList() const
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{
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return _commandList;
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}
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public:
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/// <summary>
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/// Adds the transition barrier for the given resource (or subresource). Supports batching barriers.
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/// </summary>
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/// <param name="resource">The resource.</param>
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/// <param name="before">The 'before' state.</param>
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/// <param name="after">The 'after' state.</param>
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/// <param name="subresourceIndex">The index of the subresource.</param>
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void AddTransitionBarrier(ResourceOwnerDX12* resource, const D3D12_RESOURCE_STATES before, const D3D12_RESOURCE_STATES after, const int32 subresourceIndex);
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/// <summary>
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/// Set DirectX 12 resource state using resource barrier
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/// </summary>
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/// <param name="resource">Resource to use</param>
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/// <param name="after">The target state to resource have.</param>
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/// <param name="subresourceIndex">The subresource index. Use -1 to apply for the whole resource.</param>
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void SetResourceState(ResourceOwnerDX12* resource, D3D12_RESOURCE_STATES after, int32 subresourceIndex = -1);
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/// <summary>
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/// Reset commands list and request new allocator for commands
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/// </summary>
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void Reset();
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/// <summary>
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/// Flush existing commands to the GPU
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/// </summary>
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/// <param name="waitForCompletion">True if CPU should wait for GPU to wait job</param>
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/// <returns>Next fence value used for CPU/GPU work synchronization</returns>
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uint64 Execute(bool waitForCompletion = false);
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/// <summary>
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/// External event called by swap chain after using context end
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/// </summary>
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void OnSwapChainFlush();
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/// <summary>
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/// Flush pending resource barriers
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/// </summary>
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FORCE_INLINE void FlushResourceBarriers()
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{
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flushRBs();
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}
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protected:
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void GetActiveHeapDescriptor(const D3D12_CPU_DESCRIPTOR_HANDLE& cpuHandle, Descriptor& descriptor);
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private:
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void flushSRVs();
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void flushRTVs();
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void flushUAVs();
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void flushCBs();
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void flushRBs();
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void flushPS();
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void onDrawCall();
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public:
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// [GPUContext]
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void FrameBegin() override;
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void FrameEnd() override;
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#if GPU_ALLOW_PROFILE_EVENTS
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void EventBegin(const Char* name) override;
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void EventEnd() override;
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#endif
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void* GetNativePtr() const override;
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bool IsDepthBufferBinded() override;
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void Clear(GPUTextureView* rt, const Color& color) override;
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void ClearDepth(GPUTextureView* depthBuffer, float depthValue) override;
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void ClearUA(GPUBuffer* buf, const Vector4& value) override;
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void ResetRenderTarget() override;
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void SetRenderTarget(GPUTextureView* rt) override;
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void SetRenderTarget(GPUTextureView* depthBuffer, GPUTextureView* rt) override;
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void SetRenderTarget(GPUTextureView* depthBuffer, const Span<GPUTextureView*>& rts) override;
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void SetRenderTarget(GPUTextureView* rt, GPUBuffer* uaOutput) override;
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void ResetSR() override;
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void ResetUA() override;
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void ResetCB() override;
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void BindCB(int32 slot, GPUConstantBuffer* cb) override;
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void BindSR(int32 slot, GPUResourceView* view) override;
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void BindUA(int32 slot, GPUResourceView* view) override;
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void BindVB(const Span<GPUBuffer*>& vertexBuffers, const uint32* vertexBuffersOffsets = nullptr) override;
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void BindIB(GPUBuffer* indexBuffer) override;
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void UpdateCB(GPUConstantBuffer* cb, const void* data) override;
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void Dispatch(GPUShaderProgramCS* shader, uint32 threadGroupCountX, uint32 threadGroupCountY, uint32 threadGroupCountZ) override;
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void DispatchIndirect(GPUShaderProgramCS* shader, GPUBuffer* bufferForArgs, uint32 offsetForArgs) override;
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void ResolveMultisample(GPUTexture* sourceMultisampleTexture, GPUTexture* destTexture, int32 sourceSubResource, int32 destSubResource, PixelFormat format) override;
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void DrawInstanced(uint32 verticesCount, uint32 instanceCount, int32 startInstance, int32 startVertex) override;
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void DrawIndexedInstanced(uint32 indicesCount, uint32 instanceCount, int32 startInstance, int32 startVertex, int32 startIndex) override;
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void DrawInstancedIndirect(GPUBuffer* bufferForArgs, uint32 offsetForArgs) override;
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void DrawIndexedInstancedIndirect(GPUBuffer* bufferForArgs, uint32 offsetForArgs) override;
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void SetViewport(const Viewport& viewport) override;
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void SetScissor(const Rectangle& scissorRect) override;
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GPUPipelineState* GetState() const override;
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void SetState(GPUPipelineState* state) override;
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void ClearState() override;
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void FlushState() override;
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void Flush() override;
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void UpdateBuffer(GPUBuffer* buffer, const void* data, uint32 size, uint32 offset) override;
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void CopyBuffer(GPUBuffer* dstBuffer, GPUBuffer* srcBuffer, uint32 size, uint32 dstOffset, uint32 srcOffset) override;
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void UpdateTexture(GPUTexture* texture, int32 arrayIndex, int32 mipIndex, const void* data, uint32 rowPitch, uint32 slicePitch) override;
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void CopyTexture(GPUTexture* dstResource, uint32 dstSubresource, uint32 dstX, uint32 dstY, uint32 dstZ, GPUTexture* srcResource, uint32 srcSubresource) override;
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void ResetCounter(GPUBuffer* buffer) override;
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void CopyCounter(GPUBuffer* dstBuffer, uint32 dstOffset, GPUBuffer* srcBuffer) override;
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void CopyResource(GPUResource* dstResource, GPUResource* srcResource) override;
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void CopySubresource(GPUResource* dstResource, uint32 dstSubresource, GPUResource* srcResource, uint32 srcSubresource) override;
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};
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#endif
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