Bug 48120

Summary:	GL_EXT_texture_sRGB_decode still broken
Product:	Mesa	Reporter:	andreas.sturmlechner
Component:	Drivers/DRI/i965	Assignee:	Ian Romanick <idr>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	medium	CC:	darkbasic, imamdxl8805, mike
Version:	git
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:
Attachments:	screenshot of civ4 on wine-1.3.15 with mesa-7.11.2 output of glxinfo32 with latest mesa git

Description andreas.sturmlechner 2012-03-31 06:11:03 UTC

Created attachment 59307 [details]
screenshot of civ4 on wine-1.3.15 with mesa-7.11.2

My problem appears to be identical to bug 35373. After all, it was the same with the mesa version that was supposed to have it fixed.

The system:
Gentoo amd64 multilib, kernel-3.3, GMA4500MHD
Intel userspace driver version: git

Affected/tested mesa versions:
7.11.2, 8.0, git

The problem:
Starting Civilization IV from wine-1.3.15 onwards (the first version to use that extension) it paints too dark images as soon as accessing the main menu.

Temporary solution (as in above bug 35373):
MESA_EXTENSION_OVERRIDE="-GL_EXT_texture_sRGB_decode"


There is an option in wine-1.3.15 to disable hardware pixel- and vertexshader, turned off it renders graphics less dark, but still not right.

Comment 1 andreas.sturmlechner 2012-03-31 06:33:05 UTC

Created attachment 59308 [details]
output of glxinfo32 with latest mesa git

Comment 2 Md Imam Hossain 2012-04-01 15:33:02 UTC

still present in Mesa 8 and Mesa 8-devel (git)

Comment 3 Gregory 2012-05-21 09:16:27 UTC

I have this problem on i915 too. So MESA_EXTENSION_OVERRIDE="-GL_EXT_texture_sRGB_decode" is not working.

Comment 4 network723 2012-05-29 22:34:31 UTC

Have the same problem on Sandy Bridge gen2. Too dark s3tc-compressed textures in most of games on wine. Disabling s3tc makes some textures to bright. 

Disabling GL_EXT_texture_sRGB_decode helps.

Comment 5 network723 2012-05-29 22:46:26 UTC

Have the same problem on Sandy Bridge gen2. Too dark s3tc-compressed textures in most of games on wine. Disabling s3tc makes some textures too bright. 

Disabling GL_EXT_texture_sRGB_decode helps.

Comment 6 Eric Anholt 2012-07-30 20:14:13 UTC

Care to try:

http://lists.freedesktop.org/archives/mesa-dev/2012-July/024917.html

Comment 7 andreas.sturmlechner 2012-07-30 20:40:43 UTC

Thx, I tried it immediately (patched mesa-8.1_rc1_pre20120724) but without success. Builds fine, but the same graphics issue as before.

Comment 8 andreas.sturmlechner 2012-07-30 21:05:59 UTC

Pardon, I failed. :) After patching the actually relevant mesa-32bit packge it seems to be FIXED! :D

Comment 9 Eric Anholt 2012-07-30 21:08:26 UTC

*** Bug 40509 has been marked as a duplicate of this bug. ***

Comment 10 Eric Anholt 2012-07-31 18:15:27 UTC

Thanks!

commit 19bd5936af7278c0cce0728e8d6dec1a951eaf58
Author: Eric Anholt <eric@anholt.net>
Date:   Mon Jul 30 11:04:57 2012 -0700

    i965: Add support for GL_SKIP_DECODE_EXT on other SRGB formats.
    
    Fixes some failures in getteximage-formats.
    
    v2: Remove stray include, and drop extra test for encoding == GL_SRGB --
        _mesa_get_srgb_format_linear() returns the same format if it wasn't SRGB.
    
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=48120
    Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> (v1)
    NOTE: This is a candidate for the 8.0 branch.

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