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Old 09-13-06, 09:41 AM   #1
shriekback
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Join Date: Sep 2006
Posts: 1
Question glPointSize Issue

In an OpenGL application, I have a display that plots points. Simple. An example plot shows concentric rings spaced 100 pixels apart. Looks pretty. However, if I set glPointSize() to a value > 1, then my circles show discontinuities on the X and Y axis, as if the OpenGL driver is not using the center of the point to plot, but rather the corner of a square with dimensions of the glPointSize value. This is not seen on a Macintosh using a ATI card; I can crank up the glPointSize value and circles look like circles.

Has anyone else seen this? I'll try and file a bug report, but the machine I'm doing the testing on does not have net access.

Regards,

Brad
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Old 09-13-06, 10:13 AM   #2
Thunderbird
 
Join Date: Jul 2002
Location: Netherlands, Europe
Posts: 2,105
Default Re: glPointSize Issue

In case of issues like this create a small testcase and attach it to a bugreport if you really think it is a bug. If you aren't sure if it is a bug or not build a testcase aswell and attach it to this thread so that people (including ones from nvidia) could take a look at it. Keep the testcase as simple as possible.
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Old 09-13-06, 11:00 AM   #3
netllama
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Join Date: Dec 2004
Posts: 8,763
Default Re: glPointSize Issue

Yes, please provide what Thunderbird requested, along with an nvidia-bug-report.log.

Thanks,
Lonni
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