[Bug 93435] [HSW bisected] Render error when running Unigine-Heave_v4.0

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93435

Alejandro Piñeiro (freenode IRC: apinheiro) <apinheiro at igalia.com> changed:

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

--- Comment #2 from Alejandro Piñeiro (freenode IRC: apinheiro) <apinheiro at igalia.com> ---
(In reply to ye.tian from comment #0)
> Created attachment 120580 [details]
> Xorg.0.log info
> 
> System Environment:
> --------------------------
> Mesa Regression: yes
> Failed Platform: HSW
> 
> Bug detailed description:
> -----------------------------
> Render error with black pictures when running Unigine-Heave_v4.0
> pls refer to attached error picture and xorg.log

Recently I was doing some benchmarking on older versions of mesa, and I found
this problem. Having said so ...

> 
> It's mesa regression, by bisect, shows the first bad mesa commit is 5ead448.
> commit 5ead448719f39d27bfbf4cabf138324dfee34a4f

... not exactly on this commit.

In any case, all seems to work fine using mesa. Doing a git bisect to see when
this problem got solved, I found this commit:

commit 4acf71c89b5ef5e2fe8c1a3d7ecf6031e191463c
Author: Kenneth Graunke <kenneth at whitecape.org>
Date:   Mon Dec 28 14:20:28 2015 -0800

    drirc: Disable ARB_blend_func_extended for Heaven 4.0/Valley 1.0.

    Unigine Heaven 4.0 and Valley 1.0 use dual color blending but don't
    specify which fragment shader output is which, so there's at best a
    50/50 chance of us guessing it correctly.  This is invalid.

    Unigine fixed this in 4.1 and 1.1 versions over a year and a half ago,
    but hasn't actually released them for whatever reason.  So, add the
    workaround back so that it works for most people.

    Fixes Heaven 4.0/Valley 1.0 rendering on Ivybridge.  For whatever
    reason, Broadwell worked.  4.1 and 1.1 have always worked.

    Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92233
    Reviewed-by: Marek Olšák <marek.olsak at amd.com>
    Cc: mesa-stable at lists.freedesktop.org


So I will close this bug. I guess that RESOLVED:WORKSFORME is the proper status
change.

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