[Mesa-dev] "glsl: Vectorize multiple scalar assignments" (mesa 4bd6e0d) breaks League of Legends on wine

[Matt Turner]

On Fri, Feb 7, 2014 at 10:22 PM, Andrew Guertin <lists at dolphinling.net> wrote:
> Hi,
>
> I updated mesa and started getting some bad behavior in League of Legends
> (played through wine). After starting a game, upon hovering any of the skill
> buttons, instead of an info tooltip appearing, the whole screen is covered
> in grey. Some other problems are visible too, like the options menu missing
> most of its text.
>
> I bisected down to
>
> 4bd6e0d7c69b304be88996a6c2b96ce7d996e627 is the first bad commit
> commit 4bd6e0d7c69b304be88996a6c2b96ce7d996e627
> Author: Matt Turner <mattst88 at gmail.com>
> Date:   Sat Dec 21 11:28:05 2013 -0800
>
>     glsl: Vectorize multiple scalar assignments
>
>     Reduces vertex shader instruction counts in DOTA2 by 6.42%, L4D2 by
>     4.61%, and CS:GO by 5.71%.
>
>     total instructions in shared programs: 1500153 -> 1498191 (-0.13%)
>     instructions in affected programs:     59919 -> 57957 (-3.27%)
>
>     Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>
>
>
> System info:
> CPU: i7-3770
> GPU: HD 4000
> Kernel: 3.12
>
> I am not subscribed to this mailing list, so please keep me cc'd.
>
> Thanks,
> --Andrew

Presumably you have the following commits on top of that, and none of
them affect it?

8e2b8bd0
37f1903e
60654421

Could you send me (privately) or file a bug report with the output of
the game running with MESA_GLSL=dump ?

Thanks for the report.

Matt