dolphin/Source/Core/VideoBackends/Vulkan/ShaderCache.h

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// Copyright 2016 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <cstddef>
#include <map>
#include <memory>
#include <string>
#include <unordered_map>
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#include <utility>
#include "Common/CommonTypes.h"
#include "Common/LinearDiskCache.h"
#include "VideoBackends/Vulkan/Constants.h"
#include "VideoBackends/Vulkan/ObjectCache.h"
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#include "VideoBackends/Vulkan/ShaderCompiler.h"
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#include "VideoCommon/AsyncShaderCompiler.h"
#include "VideoCommon/GeometryShaderGen.h"
#include "VideoCommon/PixelShaderGen.h"
#include "VideoCommon/RenderState.h"
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#include "VideoCommon/UberShaderPixel.h"
#include "VideoCommon/UberShaderVertex.h"
#include "VideoCommon/VertexShaderGen.h"
namespace Vulkan
{
class CommandBufferManager;
class VertexFormat;
class StreamBuffer;
class CommandBufferManager;
class VertexFormat;
class StreamBuffer;
struct PipelineInfo
{
// These are packed in descending order of size, to avoid any padding so that the structure
// can be copied/compared as a single block of memory. 64-bit pointer size is assumed.
const VertexFormat* vertex_format;
VkPipelineLayout pipeline_layout;
VkShaderModule vs;
VkShaderModule gs;
VkShaderModule ps;
VkRenderPass render_pass;
BlendingState blend_state;
RasterizationState rasterization_state;
DepthStencilState depth_stencil_state;
VkPrimitiveTopology primitive_topology;
};
struct PipelineInfoHash
{
std::size_t operator()(const PipelineInfo& key) const;
};
bool operator==(const PipelineInfo& lhs, const PipelineInfo& rhs);
bool operator!=(const PipelineInfo& lhs, const PipelineInfo& rhs);
bool operator<(const PipelineInfo& lhs, const PipelineInfo& rhs);
bool operator>(const PipelineInfo& lhs, const PipelineInfo& rhs);
bool operator==(const SamplerState& lhs, const SamplerState& rhs);
bool operator!=(const SamplerState& lhs, const SamplerState& rhs);
bool operator>(const SamplerState& lhs, const SamplerState& rhs);
bool operator<(const SamplerState& lhs, const SamplerState& rhs);
struct ComputePipelineInfo
{
VkPipelineLayout pipeline_layout;
VkShaderModule cs;
};
struct ComputePipelineInfoHash
{
std::size_t operator()(const ComputePipelineInfo& key) const;
};
bool operator==(const ComputePipelineInfo& lhs, const ComputePipelineInfo& rhs);
bool operator!=(const ComputePipelineInfo& lhs, const ComputePipelineInfo& rhs);
bool operator<(const ComputePipelineInfo& lhs, const ComputePipelineInfo& rhs);
bool operator>(const ComputePipelineInfo& lhs, const ComputePipelineInfo& rhs);
class ShaderCache
{
public:
ShaderCache();
~ShaderCache();
// Get utility shader header based on current config.
std::string GetUtilityShaderHeader() const;
// Accesses ShaderGen shader caches
VkShaderModule GetVertexShaderForUid(const VertexShaderUid& uid);
VkShaderModule GetGeometryShaderForUid(const GeometryShaderUid& uid);
VkShaderModule GetPixelShaderForUid(const PixelShaderUid& uid);
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// Ubershader caches
VkShaderModule GetVertexUberShaderForUid(const UberShader::VertexShaderUid& uid);
VkShaderModule GetPixelUberShaderForUid(const UberShader::PixelShaderUid& uid);
// Accesses ShaderGen shader caches asynchronously
std::pair<VkShaderModule, bool> GetVertexShaderForUidAsync(const VertexShaderUid& uid);
std::pair<VkShaderModule, bool> GetPixelShaderForUidAsync(const PixelShaderUid& uid);
// Perform at startup, create descriptor layouts, compiles all static shaders.
bool Initialize();
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void Shutdown();
// Creates a pipeline for the specified description. The resulting pipeline, if successful
// is not stored anywhere, this is left up to the caller.
VkPipeline CreatePipeline(const PipelineInfo& info);
// Find a pipeline by the specified description, if not found, attempts to create it.
VkPipeline GetPipeline(const PipelineInfo& info);
// Find a pipeline by the specified description, if not found, attempts to create it. If this
// resulted in a pipeline being created, the second field of the return value will be false,
// otherwise for a cache hit it will be true.
std::pair<VkPipeline, bool> GetPipelineWithCacheResult(const PipelineInfo& info);
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std::pair<std::pair<VkPipeline, bool>, bool>
GetPipelineWithCacheResultAsync(const PipelineInfo& info);
// Creates a compute pipeline, and does not track the handle.
VkPipeline CreateComputePipeline(const ComputePipelineInfo& info);
// Find a pipeline by the specified description, if not found, attempts to create it
VkPipeline GetComputePipeline(const ComputePipelineInfo& info);
// Clears our pipeline cache of all objects. This is necessary when recompiling shaders,
// as drivers are free to return the same pointer again, which means that we may end up using
// and old pipeline object if they are not cleared first. Some stutter may be experienced
// while our cache is rebuilt on use, but the pipeline cache object should mitigate this.
// NOTE: Ensure that none of these objects are in use before calling.
void ClearPipelineCache();
// Saves the pipeline cache to disk. Call when shutting down.
void SavePipelineCache();
// Recompile shared shaders, call when stereo mode changes.
void RecompileSharedShaders();
// Reload pipeline cache. This will destroy all pipelines.
void ReloadShaderAndPipelineCaches();
// Shared shader accessors
VkShaderModule GetScreenQuadVertexShader() const { return m_screen_quad_vertex_shader; }
VkShaderModule GetPassthroughVertexShader() const { return m_passthrough_vertex_shader; }
VkShaderModule GetScreenQuadGeometryShader() const { return m_screen_quad_geometry_shader; }
VkShaderModule GetPassthroughGeometryShader() const { return m_passthrough_geometry_shader; }
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void PrecompileUberShaders();
void WaitForBackgroundCompilesToComplete();
void RetrieveAsyncShaders();
private:
bool CreatePipelineCache();
bool LoadPipelineCache();
bool ValidatePipelineCache(const u8* data, size_t data_length);
void DestroyPipelineCache();
void LoadShaderCaches();
void DestroyShaderCaches();
bool CompileSharedShaders();
void DestroySharedShaders();
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// We generate a dummy pipeline with some defaults in the blend/depth states,
// that way the driver is forced to compile something (looking at you, NVIDIA).
// It can then hopefully re-use part of this pipeline for others in the future.
void CreateDummyPipeline(const UberShader::VertexShaderUid& vuid, const GeometryShaderUid& guid,
const UberShader::PixelShaderUid& puid);
template <typename Uid>
struct ShaderModuleCache
{
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std::map<Uid, std::pair<VkShaderModule, bool>> shader_map;
LinearDiskCache<Uid, u32> disk_cache;
};
ShaderModuleCache<VertexShaderUid> m_vs_cache;
ShaderModuleCache<GeometryShaderUid> m_gs_cache;
ShaderModuleCache<PixelShaderUid> m_ps_cache;
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ShaderModuleCache<UberShader::VertexShaderUid> m_uber_vs_cache;
ShaderModuleCache<UberShader::PixelShaderUid> m_uber_ps_cache;
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std::unordered_map<PipelineInfo, std::pair<VkPipeline, bool>, PipelineInfoHash>
m_pipeline_objects;
std::unordered_map<ComputePipelineInfo, VkPipeline, ComputePipelineInfoHash>
m_compute_pipeline_objects;
VkPipelineCache m_pipeline_cache = VK_NULL_HANDLE;
std::string m_pipeline_cache_filename;
// Utility/shared shaders
VkShaderModule m_screen_quad_vertex_shader = VK_NULL_HANDLE;
VkShaderModule m_passthrough_vertex_shader = VK_NULL_HANDLE;
VkShaderModule m_screen_quad_geometry_shader = VK_NULL_HANDLE;
VkShaderModule m_passthrough_geometry_shader = VK_NULL_HANDLE;
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std::unique_ptr<VideoCommon::AsyncShaderCompiler> m_async_shader_compiler;
// TODO: Use templates to reduce the number of these classes.
class VertexShaderCompilerWorkItem : public VideoCommon::AsyncShaderCompiler::WorkItem
{
public:
VertexShaderCompilerWorkItem(const VertexShaderUid& uid) : m_uid(uid) {}
bool Compile() override;
void Retrieve() override;
private:
VertexShaderUid m_uid;
ShaderCompiler::SPIRVCodeVector m_spirv;
VkShaderModule m_module = VK_NULL_HANDLE;
};
class PixelShaderCompilerWorkItem : public VideoCommon::AsyncShaderCompiler::WorkItem
{
public:
PixelShaderCompilerWorkItem(const PixelShaderUid& uid) : m_uid(uid) {}
bool Compile() override;
void Retrieve() override;
private:
PixelShaderUid m_uid;
ShaderCompiler::SPIRVCodeVector m_spirv;
VkShaderModule m_module = VK_NULL_HANDLE;
};
class PipelineCompilerWorkItem : public VideoCommon::AsyncShaderCompiler::WorkItem
{
public:
PipelineCompilerWorkItem(const PipelineInfo& info) : m_info(info) {}
bool Compile() override;
void Retrieve() override;
private:
PipelineInfo m_info;
VkPipeline m_pipeline;
};
};
extern std::unique_ptr<ShaderCache> g_shader_cache;
} // namespace Vulkan