[Bug 48310] Slow 2D rendering on r300 with xf86-video-ati-6.14.x

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=48310

Alex Deucher <agd5f at yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |DUPLICATE

--- Comment #1 from Alex Deucher <agd5f at yahoo.com> 2012-04-04 13:18:39 PDT ---
(In reply to comment #0)
> So my questions are:
> 
> Is ColorTiling supposed to be on or off for r300 on xorg-server 1.11.2 (i.e.
> does it work in theory), and if it's supposed to work then why doesn't it in my
> case (i.e. do I have a new bug, or is this an ongoing issue with EXA)?
> 

It depends whether the xserver you are using suports EXA_MIXED_PIXMAPS or not. 
If tiling is enabled, then presumably your xserver does support
EXA_MIXED_PIXMAPS.

Your issue is a duplicate of bug 34486.

> Is xf86-video-ati-6.14.3 supposed to turn off ColorTiling by default, and if so
> then why isn't it doing so in my case (was the commit reversed, or do I have
> some weirdness happing)?

Tiling is enabled by default assuming your xserver supports EXA_MIXED_PIXMAPS.

> 
> Just to be clear, I have a working solution (Option "ColorTiling" "off"), but I
> have to create an xorg.conf and specify this manually, and IMO this should be
> handled automatically by the xserver instead (e.g. LiveCD scenario), or fixed
> if it's an EXA bug.

The bug is that the applications you are using are choosing software rendering
paths rather than hardware rendering paths.  Tilint improves performance for hw
accelerated paths at the cost of software rendering performance.

*** This bug has been marked as a duplicate of bug 34486 ***

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