message: Just skip GL function calls if we don't have function pointers
  * This is completely invalid but better than crashing. This can happen as a
  race-condition if the user injects into a running program that's already using
  GL on one thread, before we've completed installing our hooks.
diff: @@ -116,12 +116,26 @@ void DisableGLHooks()
  glhook.enabled = false;
  }
  +template <typename ret_type>
  +ret_type default_ret()
  +{
  + return (ret_type)0;
  +}
  +
  +template <>
  +void default_ret()
  +{
  +}
  +
  // if we were injected and aren't ready to capture, skip out and call the real function
  #define UNINIT_CALL(function, ...) \
  if(!glhook.enabled) \
  { \
  if(GL.function == NULL) \
  + { \
  RDCERR("No function pointer for '%s' while uninitialised!", STRINGIZE(function)); \
  + return default_ret<decltype(GL.function(__VA_ARGS__))>(); \
  + } \
  return GL.function(__VA_ARGS__); \
  }
  