Posted by Edward K. Chew on January 22, 2004 at 16:37:32:
Has anyone noticed a problem with kQ3BackfacingStyleFlip not flipping
the normals properly on a G5? (I ran my Quesa app on the 1.8 GHz dual
processor machine which just arrived and observed this symptom.)As an experiment, I turned on a flag which has it render into a pixmap
context and CopyBits it back into the window. (I put that in because I
have occasional need to overlay the 3D image with Quickdraw graphics
and that was the only way I could get it to work. If anyone knows a
better way, I'm all ears!) Anyway, when I do this,
kQ3BackfacingStyleFlip DOES work the way it should, so maybe it's a
hardware rendering problem?This was my experience with the latest CVS version of Quesa. Fearing
maybe it was a recently introduced bug, I went back to the d17 release
and things got even worse! The G5 became unresponsive and I eventually
had to do a hard reset. Very unusual in OS X! Then I went back to my
G4 with the exact same executable and it was happy as a clam. (Also,
software rendering with d17 worked fine on the G5.)Something has evidently changed with the G5, and the problem might be
in OpenGL for all I know.-Ted