Thread View: comp.sys.sgi.bugs
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Started by Robert M. Shectman
Mon, 28 Dec 1992 20:24
rectzoom on Indigo
Author: Robert M. Shectman
Date: Mon, 28 Dec 1992 20:24
Date: Mon, 28 Dec 1992 20:24
25 lines
1824 bytes
1824 bytes
I have a brand new Indigo 4000 Elan, running 4.0.5f and I am in the process of moving some code from a VGX to the Indigo.
I have a true color window with pixmode(PM_TTOB,1) and
rectzoom(4.0,4.0)
When I run this program, and do an lrectwrite to this window, I get a graphics error that wipes out the graphics server. The SYSLOG reports:
unix: WARNING: VDMA error : MC rev 1 (1) status 1
unix: WARNING: Gr2PixelDma graphics error
unix: WARNING: Graphics error: GE PC = 0x4045
Xsession: shectman: fatal IO error 32 (Broken pipe)
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?
Robert M. Shectman
Lawrence Livermore National Laboratory
shectman@llnl.gov
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