GLES again

[Martin Gräßlin]

On Monday 15 August 2011 23:35:35 Sebastian Kügler wrote:
> hey all,
> 
> I've been poking at running kwin using OpenGL-ES again, and made some progress 
> there. I now have Mesa builds that provide the needed GLES libraries, thanks 
> to help from Martin with configuring it. It builds and runs fine on my laptop 
> (Mesa package, kde-workspace from the 4.7 branch. CMake finds OpenGL-ES and 
> says that it's building the mobile version of kwin. Kwin starts, and 
> apparently works, I notice no major difference. So far so good. Building the 
> package, however throws me a linker error when linking kwin against libgbm.
> 
> I've two problems left:
> 
> - Is it really using GLES?
> 
> When starting KWin, it outputs:
> kwin(24933) KWin::CompositingPrefs::detect: glx version is  1 . 4
> OpenGL vendor string:                   Tungsten Graphics, Inc
> OpenGL renderer string:                 Mesa DRI Intel(R) Ironlake Mobile 
> OpenGL version string:                  2.1 Mesa 7.11-rc3
> OpenGL shading language version string: 1.20
> Driver:                                 Intel
> GPU class:                              i965
> OpenGL version:                         2.1
> GLSL version:                           1.20
> Mesa version:                           7.11
> X server version:                       1.9.3
> Linux kernel version:                   3.0
> Direct rendering:                       yes
> Requires strict binding:                yes
> GLSL shaders:                           yes
> Texture NPOT support:                   yes
> 
> This looks like it's using the desktop GLX, or does it?
This is GLX as it says in first debug output. If you are using master try kwin_gles binary.
> 
> 
> - Linker problem during package build:
> 
> /usr/lib/libgbm.so.1: undefined reference to `gbm_dri_backend'
> collect2: ld returned 1 exit status
> make[2]: *** [kwin/kwin] Error 1
Strange, I do not link at this at all.
martin at martin-desktop:~$ ldd /opt/kde/bin/kwin_gles | grep gbm
martin at martin-desktop:~$ 

> 
> This works when building from source, but not during packages. (Source is the 
> same, I've packaged the code from the same git clone I've built locally.) I'm 
> quite puzzled here, maybe someone has a pointer where to start looking?
I think the gbm is used by mesa. Can you try building Mesa without it?

Cheers
Martin
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 198 bytes
Desc: This is a digitally signed message part.
URL: <http://mail.kde.org/pipermail/plasma-devel/attachments/20110816/127ebc1c/attachment.sig>