| Re: [AD] About the speed of flat polygon primitives |
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> $ ./misc/cmplog.pl tests/noaccel.log tests/accel.log
> (note the order)
> before -> after
> putpixel() = 96% -> 95%
> hline() = 41% -> 42%
> vline() = 69% -> 78%
> line() = 16% -> 16%
> rectfill() = 273% -> 271%
> circle() = 21% -> 21%
> circlefill() = 22% -> 51%
> ellipse() = 28% -> 28%
> ellipsefill() = 20% -> 49%
> arc() = 20% -> 21%
> triangle() = 18% -> 46%
>
> Improvements for circlefill, ellipsefill and triangle,
Yes, roughly double the speed. I'm going to commit the patch.
But the performances are still cut off by 50% compared with the software
driver.
> but otherwise no effect.
It wasn't meant to have any effect on other primitives.
The remaining gap is purely an internal problem of the DGA2 driver: an extra
layer of synchronization is added by the accel driver even if it reverts to
software drawing for line(), circle(), circlefill(), ellipse(),
ellipsefill(), arc() and triangle().
--
Eric Botcazou
ebotcazou@xxxxxxxxxx