The lrectwrite is writing a 128 x 128 truecolor array into a 512 x 512 window.
It is the rectzoom that is the cause of the problem. If I comment out the
rectzoom the program does not trigger the graphics error.
If I run the same program on a VGX sending the graphics to my Indigo with
a rectzoom of 4x4, the program does not crash with an error. On the other hand the rectzoom is not performed correctly either. It appears more like a 2.5x4 zoom with the upper section of the window appearing as mostly black with an occasional random colored pixel thrown in.
Is this a known problem? Are there any work-arounds other than not zooming?