[Bug 1424] Font rendering glitches with Render Acceleration enabled on radeon

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https://bugs.freedesktop.org/show_bug.cgi?id=1424          
     




------- Additional Comments From mhopf at suse.de  2005-04-04 08:05 -------
(In reply to comment #64)
> > Kevin, if I read your patch in attachment 2178 [edit] [edit] correctly, this one
> disables my
> > patch but changes the texture size to 2^n *instead*. Am I right?
> 
> Partially correct.  It does disable your patch, but the texture size is actually
> set to max(32,2^ceil(log2(width))).  Basically, it's just rounding the dst_pitch
> up to the next power of two that completely contains the texture but makes sure
> that the pitch is at least 32.

Right. Ok, just wanted to make sure that prerendering is disabled with your patch.

> I had troubles with pitches less than 32, so that was why I made the minimum
> texture width 32.  However, note that this was just for the second solution to
> the problem (see comment #45 for details).  The first solution is the change to
> tex_size = (height << 16) | width; which is the code path that is taken most
> (all?) of the time.

I think we're safe to assume there have been 2 problems.

> Maybe I'm trying to explain too much in this patch.  I'll create two different
> patches, each with their own solution.  That should help make the two different
> solutions clearer.

No need, I think this is clear now.
I'll try your patch and a aligned non-power-of-2 patch. I'll let all of you know
about the outcome.
          
     
     
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