GLProgram.h

#pragma once

#include <GL/glew.h>
#include <glm/glm.hpp>
#include <vector>
#include <map>

#include "GLTexture.h"
#include "GLShader.h"

namespace GL
{
  class GLProgram
  {
  public:

    explicit GLProgram();

    void initialize();
    void attachShader(const GLShader& shader); 
    void link(); 
    void bind(); 
    int getNumberOfAttributes(); 
    int getNumberOfUniforms(); 
    int getAttributeByName(char const* name); 
    int getUniformByName(char const* name); 
    void bindFragDataLocation(int loc, const char* variableName); 
      
    // uniform setters
    void setUniform(const char* name, float u); 
    void setUniform(const char* name, int u); 
    void setUniform(const char* name, const glm::vec2& u);
    void setUniform(const char* name, const glm::vec3& u);
    void setUniform(const char* name, const glm::vec4& u);
    void setUniform(const char* name, const glm::mat3& u);
    void setUniform(const char* name, const glm::mat4& u);
    void setUniform(const char* name, const std::vector<glm::mat4>& u);
    void setUniform(const char* name, const GLTexture& tex, int iTextureSlot);

  private:
    GLuint handle;
    std::map<std::string, GLuint> uniformCache;
  };
}