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Performance questions.


Performance questions.

Postby A. Cicak » Nov 29, 2003 @ 1:47am

Hello,

I have two questions regarding GapiDraw 2.05 performance:

1. I use BltFast, and performance drops significally even on stationary PC (abnormally, maybe about 60%) if I use Opacity (GDBLTFAST_KEYSRC | GDBLTFAST_OPACITY). It happens even if I use very small surfaces. If I just turn off GDBLTFAST_OPACITY performance is good again. What am I doing wrong? Does GapiDraw use hardware acceleration for opacity, because I worked in Direct3D and giving opacity to textures on accelerated hardware almost does not affect performance?

2. On PPC performance drops from 30 fps to 12 fps when I start to move stylus, when I stop using it performance returns to 30 fps. This happens even if I dont do anything OnStylusMove. Is there any workaround or this is PPC problem?

Thanks in advance!
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Performance questions.

Postby ppcStudios » Nov 29, 2003 @ 3:12am

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Postby Johan » Nov 29, 2003 @ 9:05am

Johan Sanneblad, M.Sc, Ph.D
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Performance questions.

Postby Kak » Nov 29, 2003 @ 11:08am

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Postby ppcStudios » Nov 29, 2003 @ 12:35pm

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Postby Kzinti » Oct 11, 2005 @ 7:35pm

No the problem is simply that polling the touchscreen takes a lot of time.
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Postby StephC » Oct 11, 2005 @ 8:48pm

Stephane Cocquereaumont / Game Developer at <a href=http://int13.net>int13 production</a> (code monkey)
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The Cross-platform Graphics SDK for Palms, Pocket PCs, Symbian Devices, and Stationary PCs.

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