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72 lines
2.1 KiB
C++
72 lines
2.1 KiB
C++
// Copyright 2015 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#pragma once
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#include <d3d12.h>
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#include <unordered_map>
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#include "VideoBackends/D3D12/D3DState.h"
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namespace DX12
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{
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// This class provides an abstraction for D3D12 descriptor heaps.
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class D3DDescriptorHeapManager
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{
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public:
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D3DDescriptorHeapManager(D3D12_DESCRIPTOR_HEAP_DESC* desc, ID3D12Device* device, unsigned int temporarySlots = 0);
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~D3DDescriptorHeapManager();
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bool Allocate(D3D12_CPU_DESCRIPTOR_HANDLE* cpu_handle, D3D12_GPU_DESCRIPTOR_HANDLE* gpu_handle = nullptr, D3D12_CPU_DESCRIPTOR_HANDLE* gpu_handle_cpu_shadow = nullptr, bool temporary = false);
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bool AllocateGroup(D3D12_CPU_DESCRIPTOR_HANDLE* cpu_handles, unsigned int num_handles, D3D12_GPU_DESCRIPTOR_HANDLE* gpu_handles = nullptr, D3D12_CPU_DESCRIPTOR_HANDLE* gpu_handle_cpu_shadows = nullptr, bool temporary = false);
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D3D12_GPU_DESCRIPTOR_HANDLE GetHandleForSamplerGroup(SamplerState* sampler_state, unsigned int num_sampler_samples);
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ID3D12DescriptorHeap* GetDescriptorHeap() const;
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struct SamplerStateSet
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{
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SamplerState desc0;
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SamplerState desc1;
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SamplerState desc2;
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SamplerState desc3;
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SamplerState desc4;
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SamplerState desc5;
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SamplerState desc6;
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SamplerState desc7;
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};
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private:
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ID3D12Device* m_device = nullptr;
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ID3D12DescriptorHeap* m_descriptor_heap = nullptr;
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ID3D12DescriptorHeap* m_descriptor_heap_cpu_shadow = nullptr;
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D3D12_CPU_DESCRIPTOR_HANDLE m_heap_base_cpu;
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D3D12_GPU_DESCRIPTOR_HANDLE m_heap_base_gpu;
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D3D12_CPU_DESCRIPTOR_HANDLE m_heap_base_gpu_cpu_shadow;
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struct hash_sampler_desc
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{
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size_t operator()(const SamplerStateSet sampler_state_set) const
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{
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return sampler_state_set.desc0.hex;
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}
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};
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std::unordered_map<SamplerStateSet, D3D12_GPU_DESCRIPTOR_HANDLE, hash_sampler_desc> m_sampler_map;
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unsigned int m_current_temporary_offset_in_heap = 0;
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unsigned int m_current_permanent_offset_in_heap = 0;
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unsigned int m_descriptor_increment_size;
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unsigned int m_descriptor_heap_size;
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bool m_gpu_visible;
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unsigned int m_first_temporary_slot_in_heap;
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};
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} // namespace
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