messagecallback.cpp

static void GLMessageCallback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar* message, const void*)
{
  std::cout << message << std::endl;
}

static void SetupMessageCallback {
  if (!ogl_ext_KHR_debug) return;
  glDebugMessageCallback(GLMessageCallback, nullptr);
  glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
  glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, nullptr, GL_TRUE);
}