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

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// Copyright (C) 2003-2008 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 _PIXELSHADERMANAGER_H
#define _PIXELSHADERMANAGER_H
#include <map>
#include "BPMemory.h"
struct FRAGMENTSHADER
{
FRAGMENTSHADER() : glprogid(0) { }
GLuint glprogid; // opengl program id
#ifdef _DEBUG
std::string strprog;
#endif
};
class PIXELSHADERUID
{
public:
u32 values[4+32+6+11];
u16 tevstages, indstages;
PIXELSHADERUID() {
memset(values, 0, (4+32+6+11) * 4);
tevstages = indstages = 0;
}
PIXELSHADERUID(const PIXELSHADERUID& r)
{
tevstages = r.tevstages;
indstages = r.indstages;
int N = tevstages + indstages + 3;
_assert_(N <= 4+32+6+11);
for (int i = 0; i < N; ++i)
values[i] = r.values[i];
}
int GetNumValues() const {
return tevstages + indstages + 3; // numTevStages*3/2+1
}
bool operator <(const PIXELSHADERUID& _Right) const
{
if (values[0] < _Right.values[0])
return true;
else if (values[0] > _Right.values[0])
return false;
int N = GetNumValues();
for (int i = 1; i < N; ++i) {
if (values[i] < _Right.values[i])
return true;
else if (values[i] > _Right.values[i])
return false;
}
return false;
}
bool operator ==(const PIXELSHADERUID& _Right) const
{
if (values[0] != _Right.values[0])
return false;
int N = GetNumValues();
for (int i = 1; i < N; ++i) {
if (values[i] != _Right.values[i])
return false;
}
return true;
}
};
class PixelShaderMngr
{
struct PSCacheEntry
{
FRAGMENTSHADER shader;
int frameCount;
PSCacheEntry() : frameCount(0) {}
~PSCacheEntry() {}
void Destroy() {
// printf("Destroying ps %i\n", shader.glprogid);
glDeleteProgramsARB(1, &shader.glprogid);
shader.glprogid = 0;
}
};
typedef std::map<PIXELSHADERUID, PSCacheEntry> PSCache;
static FRAGMENTSHADER* pShaderLast; // last used shader
static PSCache pshaders;
static void GetPixelShaderId(PIXELSHADERUID&);
static PIXELSHADERUID s_curuid; // the current pixel shader uid (progressively changed as memory is written)
static void SetPSConstant4f(int const_number, float f1, float f2, float f3, float f4);
static void SetPSConstant4fv(int const_number, const float *f);
static void SetPSTextureDims(int texid);
public:
static void Init();
static void Cleanup();
static void Shutdown();
static FRAGMENTSHADER* GetShader();
static bool CompilePixelShader(FRAGMENTSHADER& ps, const char* pstrprogram);
static void SetConstants(); // sets pixel shader constants
// constant management, should be called after memory is committed
static void SetColorChanged(int type, int index);
static void SetAlpha(const AlphaFunc& alpha);
static void SetDestAlpha(const ConstantAlpha& alpha);
static void SetTexDims(int texmapid, u32 width, u32 height, u32 wraps, u32 wrapt);
static void SetZTetureBias(u32 bias);
static void SetIndTexScaleChanged();
static void SetIndMatrixChanged(int matrixidx);
static void SetGenModeChanged();
static void SetTevCombinerChanged(int id);
static void SetTevKSelChanged(int id);
static void SetTevOrderChanged(int id);
static void SetTevIndirectChanged(int id);
static void SetZTetureOpChanged();
static void SetTexturesUsed(u32 nonpow2tex);
static void SetTexDimsChanged(int texmapid);
static void SetColorMatrix(const float* pmatrix, const float* pfConstAdd);
static GLuint GetColorMatrixProgram();
};
#endif