Graphics Performance

Carsten Haitzler (The Rasterman) raster at
Fri Apr 3 10:02:01 CEST 2009

On Fri, 3 Apr 2009 09:45:37 +0200 Miguel Ángel Calderón
< at> said:

> 2009/4/3 Carsten Haitzler <raster at>
> >
> >
> > so the other side of that is to do everything with the cpu in system ram
> > and
> > transfer to the glamo when done - so you only deal with the slow write
> > once, at
> > the end. but remember the write - when being done, will hold the cpu
> > hostage
> > and as it is now slowed down to 1/6th its normal speed during this write -
> > you
> > lose even more cpu power.
> >
> > the solution is to just update less of the screen, make drawing simple so
> > the
> > cpu has to do less when software-rendering, and/or drop down to qvga.
> >
> > please dig over the archives of this list. this has been gone over in gory
> > detail before :)
> >
> Hi Raster. Thanks for your splendid presentation of the graphics issue... I
> didn't
> manage to find it from the archives.
> What really surprises me is the fact that if this is so clear, why is
> Comunity not working
> on qvga graphics yet? Is it not a waste of time to try to get glamo fully
> working and then
> keep on going over VGA resolution?

1. for a while qvga was broken and didnt work -0 not sure if it was fixed.
2. qvga means you no longer can "impress people with your amazing high dpi
screen" (you no longer can play showoff).
3. qvga on this screen really does look blocky as pixels are doubled... :)

> I'd prefer to drive the funnier modest car than to have the ferrary parked
> outside... I though
> linux and free software people were mostly this way.

i even bandied the idea about before gta02 release to drop to a qvga lcd -
cheaper than vga, and more appropriate to the hw behind it - but there was
pretty much a very vocal group saying "hell no way". so vga it is. you are free
to try run it at qvga if you want - but i suspect you wont have many friends
following you :)

------------- Codito, ergo sum - "I code, therefore I am" --------------
The Rasterman (Carsten Haitzler)    raster at

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