J:/Caro/C++_Coding/HierarchicalEdgeBundle/HierarchicalEdgeBundle/header/Shader.h

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#pragma once
#include "AbstractShader.h"
#include "ShaderObj.h"
#include <vector>


class Shader : public AbstractShader
{
public:
        Shader(ShaderObj* shaderobj)
        {
                gTransformQuadric = createShader(shaderobj->vertexshader,shaderobj->fragmentshader, shaderobj);

                //glDeleteShader(vertexShaderHandle);
                //glDeleteShader(fragmentShaderHandle);
        };

        ~Shader()
        {
                glDeleteShader(gTransformQuadric->shaderID);
        }

        ShaderObj* createShader(const char* vertexshadername, const char* fragmentshadername, ShaderObj* shaderID)
        {
                GLhandleARB vertexShaderHandle;
                GLhandleARB fragmentShaderHandle;
                vertexShaderHandle   = loadShader(vertexshadername,GL_VERTEX_SHADER);
                fragmentShaderHandle = loadShader(fragmentshadername,GL_FRAGMENT_SHADER);
                shaderID->shaderID = glCreateProgramObjectARB();
                glAttachObjectARB(shaderID->shaderID,vertexShaderHandle);
                glAttachObjectARB(shaderID->shaderID,fragmentShaderHandle);
                glLinkProgramARB(shaderID->shaderID);

                for(unsigned int i = 0; i  < shaderID->parameters.size(); i++)
                {
                        shaderID->parameters[i]->id = glGetUniformLocationARB(shaderID->shaderID, shaderID->parameters[i]->var);
                }
        
                return shaderID;
        }
        
        void start(ShaderObj* obj)
        {
                ShaderObj* Shader = gTransformQuadric;
                glUseProgramObjectARB(obj->shaderID);

                for(unsigned int i = 0; i < obj->parameters.size(); i++)
                {
                        switch(obj->parameters[i]->type)
                        {
                        case ParameterObj::PT_INT: 
                                        glUniform1iARB(obj->parameters[i]->id, (int)obj->parameters[i]->value[0]);
                                break;
                        case ParameterObj::PT_FLOAT: 
                                        glUniform1fARB(obj->parameters[i]->id, obj->parameters[i]->value[0]);
                                break;
                        case ParameterObj::PT_INT2: 
                                        glUniform2iARB(obj->parameters[i]->id, (int)obj->parameters[i]->value[0], (int)obj->parameters[i]->value[1]);
                                break;
                        case ParameterObj::PT_FLOAT2: 
                                        glUniform2fARB(obj->parameters[i]->id, obj->parameters[i]->value[0], obj->parameters[i]->value[1]);
                                break;
                        case ParameterObj::PT_INT3: 
                                glUniform3iARB(obj->parameters[i]->id, (int)obj->parameters[i]->value[0], (int)obj->parameters[i]->value[1], (int)obj->parameters[2]->value[2]); 
                                break;
                        case ParameterObj::PT_FLOAT3: 
                                        glUniform3fARB(obj->parameters[i]->id, obj->parameters[i]->value[0], obj->parameters[i]->value[1], obj->parameters[2]->value[2]); 
                                break;
                        /*case ParameterObj::PT_MAT2: 
                                        glUniformMatrix2fvARB(obj->parameters[i]->id, &obj->parameters[i]->value[0]);
                                break;
                        case ParameterObj::PT_MAT3: 
                                        glUniformMatrix3fvARB(obj->parameters[i]->id, &obj->parameters[i]->value[0]);
                                break;
                        case ParameterObj::PT_MAT4: 
                                        glUniformMatrix4fvARB(obj->parameters[i]->id, &obj->parameters[i]->value[0]);
                                break;*/
                        }
                }
        };

        void stop()
        {
                glUseProgramObjectARB(0);
        };

private:
        ShaderObj* gTransformQuadric;
};