Bug 40509

Summary:	GL_EXT_texture_sRGB_decode Extension is incompatible with WINE
Product:	Mesa	Reporter:	Md Imam Hossain <imamdxl8805>
Component:	Drivers/DRI/i965	Assignee:	Ian Romanick <idr>
Status:	RESOLVED DUPLICATE	QA Contact:
Severity:	normal
Priority:	medium
Version:	7.11
Hardware:	x86 (IA32)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Md Imam Hossain 2011-08-31 02:42:58 UTC

Recent versions of WINE starting to use fairly new OpenGL extensions like GL_EXT_texture_sRGB_decode, GL_ARB_draw_elements_base_vertex and GL_ARB_map_buffer_range to further optimise various component of WINE's Direct3D.

from WINE's release notes, WINE uses GL_EXT_texture_sRGB_decode extension to prevent texture duplication:
http://www.winehq.org/announce/1.3.15

Normally running any game with WINE results darker graphics ( games that use shaders )

but if I disable GL_EXT_texture_sRGB_decode extension by
MESA_EXTENSION_OVERRIDE="-GL_EXT_texture_sRGB_decode"
than games graphics becomes normal.


Spec:

Ubuntu 11.04
Linux 3.0.1-030001-generic
X.Org X Server 1.10.2.902 (1.10.3 RC 2)
xf86-video-intel-2.16.0
Mesa 7.12-devel 66e8d223b61dc034fb941e7d704a85ee44d7bbcc (older Mesa versions have same problem)

Comment 1 Md Imam Hossain 2011-08-31 20:04:09 UTC

This is tested on Intel GMA 4500

Comment 2 Eric Anholt 2012-07-30 20:14:54 UTC

Possible fix:

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

Comment 3 Eric Anholt 2012-07-30 21:08:26 UTC

marking as a dup of the later bug that specifies a particular way to reproduce the problem.

*** This bug has been marked as a duplicate of bug 48120 ***

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