glutReportErrors  -  for  debugging  purposes;  prints out
OpenGL run-time errors.

glutReportErrors
	glutReportErrors() -> None

void glutReportErrors(void);

This routine prints out any OpenGL run-time errors pending
and clears the errors.  This routine typically should only
be used for debugging purposes since calling it will  slow
OpenGL programs.  It is provided as a convenience; all the
routine does is call glGetError until no more  errors  are
reported.   Any  errors  detected are reported with a GLUT
warning and the corresponding text  message  generated  by
gluErrorString.

Calling  glutReportErrors  repeatedly  in your program can
help isolate OpenGL errors to the  offending  OpenGL  com-
mand.   Remember  that  you can use the -gldebug option to
detect OpenGL errors in any GLUT program.

glutInit,  glutCreateWindow,  glutInitDisplayMode,  gluEr-
rorString, glGetError

Mark J. Kilgard (mjk@nvidia.com)