iSDGE/Engine/Graphics/sgShader.h

//
//      sgShader.h
//      iSDGE
//
//      Created by Nils Daumann on 17.04.10.
//      Copyright (c) 2010 Nils Daumann

//      Permission is hereby granted, free of charge, to any person obtaining a copy
//      of this software and associated documentation files (the "Software"), to deal
//      in the Software without restriction, including without limitation the rights
//      to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//      copies of the Software, and to permit persons to whom the Software is
//      furnished to do so, subject to the following conditions:

//      The above copyright notice and this permission notice shall be included in
//      all copies or substantial portions of the Software.

//      THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//      IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//      FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//      AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//      LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//      OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
//      THE SOFTWARE.

#import "string"

#import <OpenGLES/ES2/gl.h>
#import <OpenGLES/ES2/glext.h>

#import "sgDebug.h"
#import "sgBase.h"
#import "sgRessourceManager.h"

class sgShader : public sgBase
{
        public:
                sgShader();
                
                sgShader(const char *vsfilename, const char *fsfilename);
        
                ~sgShader();
                
                static sgShader *getShader(const char *vsfilename, const char *fsfilename);
        
                static sgShader *getShader(unsigned int shad);
        
                void destroy();
        
                BOOL validateProgram();
        
                unsigned int maxlights;
        
                GLuint program;

        
                unsigned int matproj;
                unsigned int matview;
                unsigned int matmodel;
                unsigned int matnormal;
                unsigned int mattex;
        
                unsigned int position;
                unsigned int normal;
                unsigned int texcoord0;
                unsigned int color;
        
                unsigned int mambientloc;
                unsigned int mdiffuseloc;
                unsigned int mspecularloc;
                unsigned int mshininessloc;
                unsigned int memissiveloc;
                unsigned int malphatestvalue;
        
                unsigned int lambientloc;
                unsigned int ldiffuseloc;
                unsigned int lspecularloc;
                unsigned int lpositionloc;
                unsigned int lattenuationloc;
        
        private:
                BOOL create(const char *vsfilename, const char *fsfilename);
                BOOL compileShader(GLuint *shader, GLenum type, const char *filepath);
                BOOL linkProgram(GLuint prog);
                void getEngineUniforms();
};

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