radeon exa/render bug?

[Benjamin Herrenschmidt]

On Sun, 2006-02-12 at 03:30 -0500, John Clemens wrote:
> I think I found a buglet in radeon_exa_render.c:R100TextureSetup(). 
> Unless I'm waay too tired, the test for a bad texture offset should 
> happen before we set the byte-swap and MACRO_TILE control bits.  As 
> it stands now, it looks like we always fall back if we have a Colortiling 
> on, or a byte swapped texture format.   Patch attached.
> 
> But it doesn't solve my main issue. I'm looking at the ati driver for my 
> iBook G3 (Radeon M6), trying to figure out what's causing corruption with 
> EXA and Render acceleration.  A tiny screenshot of the corruption can be 
> seen here: https://bugs.freedesktop.org/attachment.cgi?id=4299 .  The 
> problem goes away if you turn off either render acceleration or EXA (or 
> both).  If anyone has any ideas, I'm all ears.  Just please be patient, 
> I've never worked on video drivers before, much less opengl.
> 
> Also, I'm assuming that there's no way to use colortiling on linux/ppc? 
> because we have to use 'UseFBDev' for mode switching?

You shouldn't need UseFBDev ...

Ben.