From: Allan Schaffer (allan++at++sgi.com)
Date: 12/04/2001 16:31:33
> Etienne Pétremand wrote:
> visualizing our FLT-model with Perfly under Performer 2.5 (demo, SuSE Linux
> 7.3), the draw is increased by 25% versus a Perfly under Performer 2.4. Could
> the SGI/Performer logo slowing down the draw process ?
Hello Etienne,
Our pre-release benchmarking showed 2.5 faster than 2.4, so there's
probably something basic going on.
Do you have an accelerated or unaccelerated OpenGL driver, e.g. Mesa?
I could imagine a hit if you are not running accelerated -- but otherwise
(with e.g. nvidia drivers) we saw no difference, logo vs no logo.
Another (more vague I know) possibility is that 2.5 is detecting
a capability in your driver and activating a feature that puts you on
a software path. This isn't particularly likely but for example
do you see anti-aliasing or some other image-quality improvement
being active that wasn't with 2.4?
It does all come back to, which OpenGL driver & gfx card?
I'll have to defer to the experts here for more suggestions.
Allan
-- Allan Schaffer allan++at++sgi.com Engineering Manager, OpenGL Performer 1-650-933-2160 Silicon Graphics http://www.sgi.com
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