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// Copyright 2011 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#pragma once
#include <memory>
#include <tuple>
#include "Common/GL/GLUtil.h"
#include "Common/LinearDiskCache.h"
#include "VideoCommon/AsyncShaderCompiler.h"
#include "VideoCommon/GeometryShaderGen.h"
#include "VideoCommon/PixelShaderGen.h"
#include "VideoCommon/UberShaderPixel.h"
#include "VideoCommon/UberShaderVertex.h"
#include "VideoCommon/VertexShaderGen.h"
class cInterfaceBase;
namespace OGL
{
class GLVertexFormat;
class SHADERUID
{
public:
VertexShaderUid vuid;
PixelShaderUid puid;
GeometryShaderUid guid;
bool operator<(const SHADERUID& r) const
{
return std::tie(vuid, puid, guid) < std::tie(r.vuid, r.puid, r.guid);
}
bool operator==(const SHADERUID& r) const
{
return std::tie(vuid, puid, guid) == std::tie(r.vuid, r.puid, r.guid);
}
};
class UBERSHADERUID
{
public:
UberShader::VertexShaderUid vuid;
UberShader::PixelShaderUid puid;
GeometryShaderUid guid;
bool operator<(const UBERSHADERUID& r) const
{
return std::tie(vuid, puid, guid) < std::tie(r.vuid, r.puid, r.guid);
}
bool operator==(const UBERSHADERUID& r) const
{
return std::tie(vuid, puid, guid) == std::tie(r.vuid, r.puid, r.guid);
}
};
struct SHADER
{
void Destroy()
{
DestroyShaders();
if (glprogid)
{
glDeleteProgram(glprogid);
glprogid = 0;
}
}
GLuint vsid = 0;
GLuint gsid = 0;
GLuint psid = 0;
GLuint glprogid = 0;
void SetProgramVariables();
void SetProgramBindings(bool is_compute);
void Bind() const;
void DestroyShaders();
};
class ProgramShaderCache
{
public:
struct PCacheEntry
{
SHADER shader;
bool in_cache;
bool pending;
void Destroy() { shader.Destroy(); }
};
static PCacheEntry GetShaderProgram();
static SHADER* SetShader(u32 primitive_type, const GLVertexFormat* vertex_format);
static SHADER* SetUberShader(u32 primitive_type, const GLVertexFormat* vertex_format);
static void BindVertexFormat(const GLVertexFormat* vertex_format);
static void InvalidateVertexFormat();
static void BindLastVertexFormat();
static bool CompileShader(SHADER& shader, const std::string& vcode, const std::string& pcode,
const std::string& gcode = "");
static bool CompileComputeShader(SHADER& shader, const std::string& code);
static GLuint CompileSingleShader(GLenum type, const std::string& code);
static bool CheckShaderCompileResult(GLuint id, GLenum type, const std::string& code);
static bool CheckProgramLinkResult(GLuint id, const std::string& vcode, const std::string& pcode,
const std::string& gcode);
static void UploadConstants();
static void Init();
static void Reload();
static void Shutdown();
static void CreateHeader();
static void RetrieveAsyncShaders();
static void PrecompileUberShaders();
private:
template <typename UIDType>
class ProgramShaderCacheInserter : public LinearDiskCacheReader<UIDType, u8>
{
public:
ProgramShaderCacheInserter(std::map<UIDType, PCacheEntry>& shader_map)
: m_shader_map(shader_map)
{
}
void Read(const UIDType& key, const u8* value, u32 value_size) override
{
if (m_shader_map.find(key) != m_shader_map.end())
return;
PCacheEntry& entry = m_shader_map[key];
if (!CreateCacheEntryFromBinary(&entry, value, value_size))
{
m_shader_map.erase(key);
return;
}
}
private:
std::map<UIDType, PCacheEntry>& m_shader_map;
};
class SharedContextAsyncShaderCompiler : public VideoCommon::AsyncShaderCompiler
{
protected:
bool WorkerThreadInitMainThread(void** param) override;
bool WorkerThreadInitWorkerThread(void* param) override;
void WorkerThreadExit(void* param) override;
};
struct SharedContextData
{
std::unique_ptr<cInterfaceBase> context;
GLuint prerender_FBO;
GLuint prerender_FBO_tex;
GLuint prerender_FBO_depth;
GLuint prerender_VBO;
GLuint prerender_VAO;
GLuint prerender_IBO;
};
class ShaderCompileWorkItem : public VideoCommon::AsyncShaderCompiler::WorkItem
{
public:
ShaderCompileWorkItem(const SHADERUID& uid);
bool Compile() override;
void Retrieve() override;
private:
SHADERUID m_uid;
SHADER m_program;
};
class UberShaderCompileWorkItem : public VideoCommon::AsyncShaderCompiler::WorkItem
{
public:
UberShaderCompileWorkItem(const UBERSHADERUID& uid);
bool Compile() override;
void Retrieve() override;
private:
UBERSHADERUID m_uid;
SHADER m_program;
};
typedef std::map<SHADERUID, PCacheEntry> PCache;
typedef std::map<UBERSHADERUID, PCacheEntry> UberPCache;
static GLuint CreateProgramFromBinary(const u8* value, u32 value_size);
static bool CreateCacheEntryFromBinary(PCacheEntry* entry, const u8* value, u32 value_size);
static void LoadProgramBinaries();
static void SaveProgramBinaries();
static void DestroyShaders();
static void CreatePrerenderArrays(SharedContextData* data);
static void DestroyPrerenderArrays(SharedContextData* data);
static void DrawPrerenderArray(const SHADER& shader, u32 primitive_type);
static PCache pshaders;
static UberPCache ubershaders;
static PCacheEntry* last_entry;
static PCacheEntry* last_uber_entry;
static SHADERUID last_uid;
static UBERSHADERUID last_uber_uid;
static std::unique_ptr<SharedContextAsyncShaderCompiler> s_async_compiler;
static u32 s_ubo_buffer_size;
static s32 s_ubo_align;
static u32 s_last_VAO;
};
} // namespace OGL
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