GL error handling

gistfile1.txt

static const char* glErrorString(GLenum err) {
  switch(err) {
    case GL_INVALID_ENUM: return "Invalid Enum";
    case GL_INVALID_VALUE: return "Invalid Value";
    case GL_INVALID_OPERATION: return "Invalid Operation";
    case GL_STACK_OVERFLOW: return "Stack Overflow";
    case GL_STACK_UNDERFLOW: return "Stack Underflow";
    case GL_OUT_OF_MEMORY: return "Out of Memory";
    case GL_TABLE_TOO_LARGE: return "Table too Large";
    default: return "Unknown Error";
  }
}

static const char* fboErrorString(GLenum status) {
  switch(status) {
    case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT: return "Incomplete Attachment";
    case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT: return "Missing Attachment";
    case GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER: return "Incomplete Draw Buffer";
    case GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER: return "Incomplete Read Buffer";
    case GL_FRAMEBUFFER_UNSUPPORTED: return "Unsupposed Configuration";
    default: return "Unknown Error";
  }
}

class gl_error : public std::runtime_error {
public:
  gl_error(std::string location, GLenum err) : std::runtime_error(glErrorString(err)+location) {}
};

class fbo_error : public std::runtime_error {
public:
  fbo_error(std::string location, GLenum status) : std::runtime_error(fboErrorString(status)+location) {}
};

#define STRING(X) #X
#define TOSTRING(X) STRING(X)
#define FILE_LINE " @ " __FILE__ ":" TOSTRING(__LINE__)
#ifndef NDEBUG
#define GL_CHECK(func) func; { GLenum glerr = glGetError(); if(GL_NO_ERROR != glerr) throw gl_error(FILE_LINE, glerr); }
#define FBO_CHECK { GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER); if(GL_FRAMEBUFFER_COMPLETE != status) throw fbo_error(FILE_LINE, status); }
#else
#define GL_CHECK(func) func;
#define FBO_CHECK
#endif