dolphin/Source/Plugins/Plugin_VideoOGL/Src/ProgramShaderCache.h

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// Copyright (C) 2003 Dolphin Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#ifndef _ProgramShaderCache_H_
#define _ProgramShaderCache_H_
#include "GLUtil.h"
#include "VertexShaderCache.h"
#include "PixelShaderCache.h"
#include "PixelShaderGen.h"
#include "VertexShaderGen.h"
#include "LinearDiskCache.h"
#include "ConfigManager.h"
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union PID
{
struct {
GLuint vsid, psid;
};
u64 id;
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};
class PROGRAMUID
{
public:
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PID uid;
PROGRAMUID()
{
uid.id = 0;
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}
PROGRAMUID(const PROGRAMUID& r)
{
uid.id = r.uid.id;
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}
PROGRAMUID(GLuint _v, GLuint _p)
{
uid.vsid = _v;
uid.psid = _p;
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}
int GetNumValues() const
{
return uid.id;
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}
};
void GetProgramShaderId(PROGRAMUID *uid, GLuint _v, GLuint _p);
namespace OGL
{
#define NUM_UNIFORMS 27
extern const char *UniformNames[NUM_UNIFORMS];
extern GLenum ProgramFormat;
struct PROGRAMSHADER
{
PROGRAMSHADER() : glprogid(0), vsid(0), psid(0), binaryLength(0){}
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GLuint glprogid; // opengl program id
GLuint vsid, psid;
PROGRAMUID uid;
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GLint UniformLocations[NUM_UNIFORMS];
GLint binaryLength;
u8 *Data()
{
#ifdef GLEW_VERSION_4_0
glGetProgramiv(glprogid, GL_PROGRAM_BINARY_LENGTH, &binaryLength);
u8* binary = (u8*)malloc(binaryLength);
glGetProgramBinary(glprogid, binaryLength, NULL, &ProgramFormat, binary);
return binary;
#else
return NULL;
#endif
}
GLint Size()
{
#ifdef GLEW_VERSION_4_0
if(!binaryLength)
glGetProgramiv(glprogid, GL_PROGRAM_BINARY_LENGTH, &binaryLength);
return binaryLength;
#else
return 0;
#endif
}
};
class ProgramShaderCache
{
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struct PCacheEntry
{
PROGRAMSHADER program;
int frameCount;
PCacheEntry() : frameCount(0) {}
void Destroy() {
glDeleteProgram(program.glprogid);
program.glprogid = 0;
}
u8* Data()
{
return program.Data();
}
GLint Size()
{
return program.Size();
}
};
class ProgramShaderCacheInserter : public LinearDiskCacheReader<PROGRAMUID, u8>
{
public:
void Read(const PROGRAMUID &key, const u8 *value, u32 value_size)
{
#ifdef GLEW_VERSION_4_0
PCacheEntry entry;
// The two shaders might not even exist anymore
// But it is fine, no need to worry about that
entry.program.vsid = key.uid.vsid;
entry.program.psid = key.uid.psid;
entry.program.glprogid = glCreateProgram();
glProgramBinary(entry.program.glprogid, ProgramFormat, value, value_size);
GLint success;
glGetProgramiv(entry.program.glprogid, GL_LINK_STATUS, &success);
if (success)
{
pshaders[std::make_pair(key.uid.psid, key.uid.vsid)] = entry;
glUseProgram(entry.program.glprogid);
SetProgramVariables(entry, key);
}
#endif
}
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};
typedef std::map<std::pair<u32, u32>, PCacheEntry> PCache;
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static PCache pshaders;
static GLuint CurrentFShader, CurrentVShader, CurrentProgram;
static std::pair<u32, u32> CurrentShaderProgram;
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static GLuint s_ps_vs_ubo;
static GLintptr s_vs_data_offset;
static void SetProgramVariables(PCacheEntry &entry, const PROGRAMUID &uid);
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public:
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static PROGRAMSHADER GetShaderProgram(void);
static void SetBothShaders(GLuint PS, GLuint VS);
static GLuint GetCurrentProgram(void);
static void SetMultiPSConstant4fv(unsigned int offset, const float *f, unsigned int count);
static void SetMultiVSConstant4fv(unsigned int offset, const float *f, unsigned int count);
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static void Init(void);
static void Shutdown(void);
};
} // namespace OGL
#endif