[Mesa-dev] [PATCH] Anisotropic filtering extension for swrast

Maxim Levitsky maximlevitsky at gmail.com
Wed May 18 10:05:05 PDT 2011

On Wed, 2011-05-18 at 08:06 -0600, Brian Paul wrote: 
> On 05/17/2011 05:08 AM, Andreas Faenger wrote:
> > Hi,
> >
> > this patch makes it possible to have high quality texture filtering
> > with the pure software renderer. The main purpose is to use it with
> > osmesa. The anisotropic filtering is based on Elliptical Weighted Avarage (EWA).
> >
> > The patch was designed to make as little changes to the existing codebase as possible. Therefore, the existing texture_sample_func
> > signature has not been adjusted although this was required; a "hack"
> > was used instead to pass the required arguments.
> >
> > I provide this patch as other people might be interessted in
> > using anisotropic filtering for osmesa, especially when rendering
> > images in a headless environment.
> Thanks.  I'm about to commit your patch (with some formatting fixes).
> Would you be interested in implementing this feature in the Gallium 
> softpipe driver too?

Offtopic: @phoronix: please don't write an excitement article about how
mesa now supports anisotropic filtering (with writing in very small text
that is only for software renderer...) :-)

Best regards,
Maxim Levitsly

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