Mailinglist Archive: radeonhd (427 mails)

[Clemens Eisserer <linuxhippy@xxxxxxxxx>]

Hi Conn,

>   Back when I was using a machine that had a 5xx and was using
> FEA/CFD software that required meshing grids and viewing them, XAA
> spanked EXA on performance because it had the hardware accelerated
> diagonal line function. When viewing 1.5 million nodes connected
> together lines to form pyramid shaped cells that particular feature
> helped a lot.

Yes I have experienced this case, too.
Especially problematic are cases where you toggle between accelerated
and software-fallback situations, where almost all time is wasted
copying pixmap contents arround.

What would help EXA a lot would probably be a better decision if
something is really worth migration to VRAM.
I have some ideas which probably could help to avoid those worst-cases
altogether, but I don't have time or the knowledge needed to implement
it.

- Clemens
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