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Aquaria/BBGE/Shader.h

95 lines
2.1 KiB
C++

/*
Copyright (C) 2007, 2010 - Bit-Blot
This file is part of Aquaria.
Aquaria 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; either version 2
of the License, or (at your option) any later version.
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 for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef BBGE_SHADER_H
#define BBGE_SHADER_H
#include "Base.h"
#include "ScriptObject.h"
class Shader
{
public:
Shader();
~Shader();
bool isLoaded() const;
void load(const std::string &file, const std::string &fragFile);
void loadSrc(const char *vertCode, const char *fragCode);
void reload();
void unload();
void bind();
void unbind();
void setInt(const char *name, int x, int y = 0, int z = 0, int w = 0);
void setFloat(const char *name, float x, float y = 0, float z = 0, float w = 0);
// TODO: other setters needed?
protected:
std::string vertFile, fragFile;
#ifdef BBGE_BUILD_OPENGL
GLuint g_programObj;
int numUniforms;
#endif
private:
static void staticInit();
static bool _wasInited;
static bool _useShaders;
static unsigned int _compileShader(int type, const char *src, char *errbuf, size_t errbufsize);
struct Uniform
{
int location; // GL location variable
int type;
bool dirty; // need to flush if true
union
{
struct
{
int i[4];
};
struct
{
float f[4];
};
} data;
char name[32];
bool operator< (const Uniform&) const;
};
static bool _sortUniform(const Uniform& a, const char *bname);
void _queryUniforms();
void _flushUniforms();
void _registerUniform();
void _setUniform(Uniform *u);
int _getUniformIndex(const char *name);
typedef std::vector<Uniform> UniformVec;
UniformVec uniforms;
bool uniformsDirty;
};
#endif