Intel ( i845G ) profiling

Simon Thum simon.thum at
Fri Mar 7 11:32:01 PST 2008

Stephane Marchesin wrote:
> On 3/7/08, The Rasterman Carsten Haitzler <raster at> wrote:
>>  of course a pure box filter would be even better than this... and i suspect
>>  some hardware may support that. beyond that you might not find much hardware
>>  support and if its back to software in xrender with what i consider "phd
>>  research level filter experiments" then i dont think this is something xorg
>>  developers should be worrying about. if you want such a filter - it will end up
>>  in software anyway and so you may as well implement it yourself and pre-scale in
>>  software.
> Not really, there are a couple of papers on the topic of implementing
> better filters on existing hardware which prove that this is possible
> :
> So what you're discussing is definitely feasible today, it's just that
> people are not ready to invest much time into the implementation.
I don't think that argument extends to the linear filters I described 
(the abstracts don't mention linearity aspects so they'll probably 
ignore it), leaving as an implementation option only software or some 
form of GPGPU programming. So we're again with the integrated 2D/3D 
pipeline everyone wants :)

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