An implementation of glDebugMessageCallbackARB callback

DebugMessageCallback.cpp

#include <gl/glew.h>
#include <string>

void GLAPIENTRY DebugMessageCallback(GLenum source,
                                     GLenum type,
                                     GLuint id,
                                     GLenum severity,
                                     GLsizei length,
                                     const GLchar* message,
                                     const void* userParam)
{
  // Convert enums into a humen readable text
  // See: https://www.opengl.org/registry/specs/ARB/debug_output.txt

  const char* sourceText = "Unknown";
  switch (source)
  {
  case GL_DEBUG_SOURCE_API_ARB:
    // The GL
    sourceText = "API";
    break;
    // The GLSL shader compiler or compilers for other extension - provided languages
  case GL_DEBUG_SOURCE_SHADER_COMPILER_ARB:
    sourceText = "Shader compiler";
    break;
    // The window system, such as WGL or GLX
  case GL_DEBUG_SOURCE_WINDOW_SYSTEM_ARB:
    sourceText = "Window system";
    break;
    // External debuggers or third-party middleware libraries
  case GL_DEBUG_SOURCE_THIRD_PARTY_ARB:
    sourceText = "Third party";
    break;
    // The application
  case GL_DEBUG_SOURCE_APPLICATION_ARB:
    sourceText = "Application";
    break;
    // Sources that do not fit to any of the ones listed above
  case GL_DEBUG_SOURCE_OTHER_ARB:
    sourceText = "Other";
    break;
  }

  const char* typeText = "Unknown";
  switch (type)
  {
    // Events that generated an error
  case GL_DEBUG_TYPE_ERROR_ARB:
    typeText = "Error";
    break;
    // Behavior that has been marked for deprecation
  case GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB:
    typeText = "Deprecated behavior";
    break;
    // Behavior that is undefined according to the specification
  case GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB:
    typeText = "Undefined behavior";
    break;
    // Implementation-dependent performance warnings
  case GL_DEBUG_TYPE_PERFORMANCE_ARB:
    typeText = "Performance";
    break;
    // Use of extensions or shaders in a way that is highly vendor - specific
  case GL_DEBUG_TYPE_PORTABILITY_ARB:
    typeText = "Portability";
    break;
    // Types of events that do not fit any of the ones listed above
  case GL_DEBUG_TYPE_OTHER_ARB:
    typeText = "Other";
    break;
  }

  const char* severityText = "Unknown";
  switch (severity)
  {
    // Any GL error; dangerous undefined behavior; any GLSL or ARB shader compiler and linker errors;
  case GL_DEBUG_SEVERITY_HIGH_ARB:
    severityText = "High";
    break;
    // Severe performance warnings; GLSL or other shader compiler and linker warnings; use of currently deprecated behavior
  case GL_DEBUG_SEVERITY_MEDIUM_ARB:
    severityText = "Medium";
    break;
    // Performance warnings from redundant state changes; trivial undefined behavior
  case GL_DEBUG_SEVERITY_LOW_ARB:
    severityText = "Low";
    break;
  }

  // Unused params
  (void)id;
  (void)length;
  (void)userParam;

  // Replace LogDebug with your logging function
  LogDebug(SDL_LOG_CATEGORY_VIDEO, "[OpenGL:source='%s', type='%s', severity='%s'] %s",
           sourceText,
           typeText,
           severityText,
           message);
}