Re: R200 texel Max size

Roland Scheidegger <[email protected]> Fri, 21 Mar 2008 14:43:52 +0100
Newsgroups gmane.comp.video.dri.user
Message-ID <[email protected]>
R. Aditya Kadambi wrote:
> Hi;
> 
> I had a question about max texel size on the R200 driver (I am using
> 9250 card). Am I correct in assuming from the driver code that the max
> texel size is 32 (r200_context.c)?
> 
> I can render a texture with 8 bit image fine but am having some issues
> with 16 bit images. Hence the inquiry about the limits.
> 
> If the texel limit is indeed 32 bit for grayscale, is it  8+8+8+8 for RGBA?

I am not quite sure what you're looking for. 32bit RGBA textures are
certainly not a problem (neither are 16bit RGBA), pretty much only a
maximum of 8bit is supported per channel (though the chip could in
theory support a 16+16 format too). If you feed the driver formats it
doesn't understand it should still work but the data will get converted
(see r200_texstate.c to easily see what format your data will end up).

Roland

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