112 lines
3.6 KiB
C++
112 lines
3.6 KiB
C++
// Copyright (c) Wojciech Figat. All rights reserved.
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#pragma once
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#include "Engine/Graphics/GPUDevice.h"
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#include "ResourceOwnerDX12.h"
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#if GRAPHICS_API_DIRECTX12
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class GPUDeviceDX12;
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class UploadBufferPageDX12;
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// Upload buffer page size
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#define DX12_DEFAULT_UPLOAD_PAGE_SIZE (4 * 1014 * 1024) // 4 MB
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// Upload buffer generations timeout to dispose
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#define DX12_UPLOAD_PAGE_GEN_TIMEOUT DX12_BACK_BUFFER_COUNT
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// Upload buffer pages that are not used for a few frames are disposed
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#define DX12_UPLOAD_PAGE_NOT_USED_FRAME_TIMEOUT 60
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/// <summary>
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/// Uploading data to GPU buffer utility
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/// </summary>
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class UploadBufferDX12
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{
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public:
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/// <summary>
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/// Upload buffer allocation
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/// </summary>
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struct Allocation
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{
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/// <summary>
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/// CPU memory address of the allocation start.
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/// </summary>
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void* CPUAddress;
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/// <summary>
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/// Allocation offset in bytes (from the start of the heap buffer).
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/// </summary>
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uint64 Offset;
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/// <summary>
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/// Allocation size in bytes
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/// </summary>
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uint64 Size;
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/// <summary>
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/// GPU virtual memory address of the allocation start.
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/// </summary>
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D3D12_GPU_VIRTUAL_ADDRESS GPUAddress;
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/// <summary>
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/// Upload buffer page resource that owns that allocation
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/// </summary>
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ID3D12Resource* Resource;
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/// <summary>
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/// Generation number of that allocation (generally allocation is invalid after one or two generations)
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/// </summary>
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uint64 Generation;
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};
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private:
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GPUDeviceDX12* _device;
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UploadBufferPageDX12* _currentPage;
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uint64 _currentOffset;
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uint64 _currentGeneration;
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Array<UploadBufferPageDX12*, InlinedAllocation<64>> _freePages;
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Array<UploadBufferPageDX12*, InlinedAllocation<64>> _usedPages;
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public:
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UploadBufferDX12(GPUDeviceDX12* device);
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public:
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/// <summary>
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/// Allocates memory for custom data in the buffer.
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/// </summary>
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/// <param name="size">Size of the data in bytes</param>
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/// <param name="align">Data alignment in buffer in bytes</param>
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/// <returns>Dynamic location</returns>
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Allocation Allocate(uint64 size, uint64 align);
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/// <summary>
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/// Uploads data to the buffer.
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/// </summary>
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/// <param name="commandList">GPU command list to record upload command to it</param>
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/// <param name="buffer">Destination buffer</param>
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/// <param name="bufferOffset">Destination buffer offset in bytes.</param>
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/// <param name="data">Data to allocate</param>
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/// <param name="size">Size of the data in bytes</param>
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void UploadBuffer(ID3D12GraphicsCommandList* commandList, ID3D12Resource* buffer, uint32 bufferOffset, const void* data, uint64 size);
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/// <summary>
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/// Uploads data to the texture.
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/// </summary>
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/// <param name="commandList">GPU command list to record upload command to it</param>
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/// <param name="texture">Destination texture</param>
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/// <param name="srcData">Data to allocate</param>
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/// <param name="srcRowPitch">Source data row pitch value to upload.</param>
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/// <param name="srcSlicePitch">Source data slice pitch value to upload.</param>
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/// <param name="mipIndex">Mip map to stream index</param>
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/// <param name="arrayIndex">Texture array index</param>
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void UploadTexture(ID3D12GraphicsCommandList* commandList, ID3D12Resource* texture, const void* srcData, uint32 srcRowPitch, uint32 srcSlicePitch, int32 mipIndex, int32 arrayIndex);
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public:
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void BeginGeneration(uint64 generation);
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void ReleaseGPU();
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};
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#endif
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