X3100 performance issue

[Richard Goedeken]

Keith Packard wrote:
> 
>> However now alpha blending appears to be broken.  When testing both in 
>> fullscreen and windowed mode, all or most of the output window will be covered 
>> by a black rectangle, with only one side or corner visible (or none at all 
>> visible).  Also in the emulator, for sprites which are rendered with an alpha 
>> channel to mask the opaque part of the sprite, the transparent part is rendered 
>> as black rather than transparent.
> 
> Yeah, we saw that on Friday, but didn't stop to fix it, I'm afraid. It
> would be great if you could use git-bisect to figure out which patch
> caused the problem.

I ran a test series with git bisect this morning, and it reported:

d9edd8e90588417e3d549f25132dab2f21445792 is first bad commit
commit d9edd8e90588417e3d549f25132dab2f21445792
Author: Eric Anholt <eric at anholt.net>
Date:   Wed Jan 9 13:24:29 2008 -0800

     [965] Remove drawing rect upload, which is handled (better) by the kernel.