OpenGL 4 Shading Language Cookbook - Third Edition

How to do it...

First, we'll use a custom exception class for errors that might occur during compilation or linking:

class GLSLProgramException : public std::runtime_error { 
public: 
  GLSLProgramException( const string & msg ) :        std::runtime_error(msg) { } 
};

We'll use enum for the various shader types:

namespace GLSLShader { 
  enum GLSLShaderType { 
        VERTEX = GL_VERTEX_SHADER,  
        FRAGMENT = GL_FRAGMENT_SHADER,  
        GEOMETRY = GL_GEOMETRY_SHADER,  
        TESS_CONTROL = GL_TESS_CONTROL_SHADER,        TESS_EVALUATION = GL_TESS_EVALUATION_SHADER,  
        COMPUTE = GL_COMPUTE_SHADER 
  }; 
}; 

The program class itself has the following interface:

class GLSLProgram  { 
private: 
  int  handle; 
  bool linked; 
  std::map<string, int> uniformLocations; GLint getUniformLocation(const char *); // ...