Re: 3D texture size limitations in mesa/r200?

On Jan 8, 2008 12:33 PM, Roland Scheidegger <[email protected]>
wrote:

> Roland Scheidegger wrote:
> > R. Aditya Kadambi wrote:
> >>     Alternatively, you could try out the attached quick patch against
> radeon
> >>     drm, which is completely untested. I guess the problem could be
> >>     fixed in
> >>     userspace instead by breaking up a single texture upload into
> several
> >>     smaller ones (ugly).
> >>
> >>     Roland
> >>
> >>
> >> Hi Roland;
> >>
> >> I just applied the patch.
> >>
> >> Well, even the smaller volumes (like 64x64x64 that used to work) don't
> >> work with this patch. Sorry.
> > Yes, there are obvious bugs in this patch. This one might work better. I
> > think though it might be very broken (due to texture tiling) if texture
> > width * texture bpp is not a multiple of 1024.
> Wait no that's broken too. Try the new version here instead...
> In fact, texture tiling shouldn't be a problem since the byte offset
> will always be a multiple of 1024.
>
> Roland


Hi Roland;

It works!!

I had texture size set to 512 in r200 driver. Do you mean that with this
patch, it'd work even if I had not set it to 512? if so, what would be the
new limit?

Thanks for all your help.

I will send another email regarding viable volume rendering using open
source mesa/dri/r200.

-Aditya

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