[Bug 37417] New: No Alpha Channel for all XPixmaps with KWin+GLES

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=37417

           Summary: No Alpha Channel for all XPixmaps with KWin+GLES
           Product: Mesa
           Version: 7.10
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r600
        AssignedTo: dri-devel at lists.freedesktop.org
        ReportedBy: mgraesslin at kde.org


Created an attachment (id=46961)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=46961)
ARGB window without alpha channel

After updating mesa on Debian Testing to package version 7.10.2-2 everything
mapped from a XPixmap lost the Alpha Channel. ARGB windows are no longer
translucent (screenshot attached) as well everything else mapped from an
XPixmap. This only affects OpenGL ES/EGL build of KWin, building against
desktop GL/GLX does not show the symptoms.

Debug output of KWin with GLES:

OpenGL vendor string:                   X.Org
OpenGL renderer string:                 Gallium 0.4 on AMD RV710
OpenGL version string:                  OpenGL ES 2.0 Mesa 7.10.2
OpenGL shading language version string: OpenGL ES GLSL ES 1.0.16
Driver:                                 R600G
GPU class:                              R700
OpenGL version:                         2.0
GLSL version:                           1.0.16
Mesa version:                           7.10.2
X server version:                       1.10.1
Linux kernel version:                   2.6.38
Direct rendering:                       yes
Requires strict binding:                yes
GLSL shaders:                           yes
Texture NPOT support:                   yes

Debug output of KWin with GLX:

OpenGL vendor string:                   Advanced Micro Devices, Inc.
OpenGL renderer string:                 Mesa DRI R600 (RV710 954F) 20090101 
TCL DRI2
OpenGL version string:                  2.1 Mesa 7.10.2
OpenGL shading language version string: 1.20
Driver:                                 R600C
GPU class:                              R700
OpenGL version:                         2.1
GLSL version:                           1.20
Mesa version:                           7.10.2
X server version:                       1.10.1
Linux kernel version:                   2.6.38
Direct rendering:                       yes
Requires strict binding:                no
GLSL shaders:                           yes
Texture NPOT support:                   yes


This worked fine until update of the package. KWin has not changed (recent
master, build from today).

If you need any help to investigate, please ask. We want to push the GLES build
of KWin with our upcoming release (beta 1 next week).

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