Function error_handler

tutorials/common/tutorial/tutorial.cpp:78–92

error reporting function */

  /* error reporting function */
  void error_handler(void* userPtr, const RTCError code, const char* str)
  {
    if (code == RTC_ERROR_NONE)
      return;

    printf("Embree: %s", rtcGetErrorString(code));
    if (str) {
      printf(" (");
      while (*str) putchar(*str++);
      printf(")\n");
    } else {
      printf("\n");
    }
    exit(1);
  }

  TutorialApplication* TutorialApplication::instance = nullptr;