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// Copyright 2019 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <map>
#include "VideoBackends/D3D12/DescriptorHeapManager.h"
#include "VideoCommon/Constants.h"
namespace DX12
{
class DescriptorAllocator
{
public:
DescriptorAllocator();
~DescriptorAllocator();
ID3D12DescriptorHeap* GetDescriptorHeap() const { return m_descriptor_heap.Get(); }
u32 GetDescriptorIncrementSize() const { return m_descriptor_increment_size; }
bool Create(ID3D12Device* device, D3D12_DESCRIPTOR_HEAP_TYPE type, u32 num_descriptors);
bool Allocate(u32 num_handles, DescriptorHandle* out_base_handle);
void Reset();
protected:
ComPtr<ID3D12DescriptorHeap> m_descriptor_heap;
u32 m_descriptor_increment_size = 0;
u32 m_num_descriptors = 0;
u32 m_current_offset = 0;
D3D12_CPU_DESCRIPTOR_HANDLE m_heap_base_cpu = {};
D3D12_GPU_DESCRIPTOR_HANDLE m_heap_base_gpu = {};
};
struct SamplerStateSet final
{
SamplerState states[VideoCommon::MAX_PIXEL_SHADER_SAMPLERS];
};
bool operator==(const SamplerStateSet& lhs, const SamplerStateSet& rhs);
bool operator!=(const SamplerStateSet& lhs, const SamplerStateSet& rhs);
bool operator<(const SamplerStateSet& lhs, const SamplerStateSet& rhs);
class SamplerAllocator final : public DescriptorAllocator
{
public:
SamplerAllocator();
~SamplerAllocator();
bool Create(ID3D12Device* device);
bool GetGroupHandle(const SamplerStateSet& sss, D3D12_GPU_DESCRIPTOR_HANDLE* handle);
bool ShouldReset() const;
void Reset();
private:
std::map<SamplerStateSet, D3D12_GPU_DESCRIPTOR_HANDLE> m_sampler_map;
};
} // namespace DX12
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