Debian Bug report logs - #808857
Screen is darker than expected on intel with mesa >= 10.6

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Deve <deveee@gmail.com>

To: submit@bugs.debian.org

Subject: Screen is darker than expected on intel with mesa >= 10.6

Date: Wed, 23 Dec 2015 20:54:31 +0100

[Message part 1 (text/plain, inline)]

Package: supertuxkart
Version: 0.9.1-2

This affects all intel graphics cards, which have at least OpenGL 3.x, 
with mesa >= 10.6. The reason of this bug is that with current drivers, 
the visual is not srgb-capable anymore. Here is more info:
https://github.com/supertuxkart/stk-code/issues/2190
https://bugs.freedesktop.org/show_bug.cgi?id=92759
http://patchwork.freedesktop.org/patch/67844/

It's not fixed in mesa yet, because the fix is not trivial and it causes 
another issues.

We made a workaround by setting WithAlphaChannel parameter to true, 
which forces to use proper format on mesa side.

Additionally I hid it inside a graphics restriction to avoid any 
modifications for other drivers. This is valid only for intel drivers. 
The radeon/nvidia drivers are not affected by this change.

It also checks if this workaround is really needed. If we already have 
srgb-capable visual, then we don't do anything.

The commits with this workaround are already applied upstream.

The diff is in attachment.

Regards,
Deve

[srgb_workaround.diff (text/x-patch, attachment)]

Message #10 received at 808857-close@bugs.debian.org (full text, mbox, reply):

From: Vincent Cheng <vcheng@debian.org>

To: 808857-close@bugs.debian.org

Subject: Bug#808857: fixed in supertuxkart 0.9.1-3

Date: Wed, 23 Dec 2015 22:37:58 +0000

Source: supertuxkart
Source-Version: 0.9.1-3

We believe that the bug you reported is fixed in the latest version of
supertuxkart, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 808857@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Vincent Cheng <vcheng@debian.org> (supplier of updated supertuxkart package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)


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Hash: SHA256

Format: 1.8
Date: Wed, 23 Dec 2015 13:50:29 PST
Source: supertuxkart
Binary: supertuxkart supertuxkart-data supertuxkart-dbg
Architecture: source all
Version: 0.9.1-3
Distribution: unstable
Urgency: medium
Maintainer: Debian Games Team <pkg-games-devel@lists.alioth.debian.org>
Changed-By: Vincent Cheng <vcheng@debian.org>
Description: 
 supertuxkart - 3D kart racing game
 supertuxkart-data - 3D kart racing game (data)
 supertuxkart-dbg - 3D kart racing game (debug)
Closes: 808857
Changes:
 supertuxkart (0.9.1-3) unstable; urgency=medium
 .
   * Add srgb_workaround.patch to provide workaround for darker screens on
     Intel GPUs with mesa >= 10.6. (Closes: #808857) More info upstream at:
     https://github.com/supertuxkart/stk-code/issues/2190
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Checksums-Sha1: 
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 788918d1609dd311bfd952adca50d6ea 29144 games optional supertuxkart_0.9.1-3.debian.tar.xz
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