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OSMesa is used since Octave 4.0 for offscreen rendering from OpenGL toolkits FLTK and Qt.
OSMesa is used since Octave 4.0 for offscreen rendering from OpenGL toolkits FLTK and Qt.
This enables printing without a X display, for example when ssh'ing to a remote machine, or if the figure is invisible (Bug #33180).
This enables printing without a X display, for example when ssh'ing to a remote machine, or if the figure is invisible ({{bug|33180}}).
Needed for example for Debian wheezy or Ubuntu 12.04.5 which ships OSMesa 8.0.5.
Needed for example for Debian wheezy or Ubuntu 12.04.5 which ships OSMesa 8.0.5.
wget -nc ftp://ftp.freedesktop.org/pub/mesa/current/MesaLib-10.2.2.tar.bz2
wget -nc ftp://ftp.freedesktop.org/pub/mesa/current/mesa-10.5.4.tar.xz
tar xjf MesaLib-10.2.2.tar.bz2
tar Jxf mesa-10.5.4.tar.xz
cd Mesa-10.2.2/
cd mesa-10.5.4/
autoreconf -fi
autoreconf -fi
Floating point textures are disabled by default due to patent restrictions. We should check if we can enable it with "--enable-texture-float"
Floating point textures are disabled by default due to patent restrictions. We should check if we can enable it with "--enable-texture-float"
== known problems ==
Unfortunately, there are several known problems with using on-screen Mesa and OSMesa at the same time.
The --without-OSMesa configure can be used to disable OSMesa if a problem is encountered.
* {{bug|44478}} segmentation fault when using proprietary Nvidia drivers
* {{bug|44979}} clumsy/missing configure check, relies on runtime failure
* {{bug|44338}} doesn't work at all on Windows
* [https://bugs.launchpad.net/bugs/1424059 LP #1424059] libosmesa6 is not installable on Ubuntu 14.04 with HWE updates
* {{bug|50479}} doesn't work at all with libglvnd, now standard in most distributions
=== workarounds ===
* Preload the Mesa libGL.so, for example
export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libGL.so
== Reporting Bugs ==
* Please include the output of
glxinfo | grep "^OpenGL \(renderer\|core profile version\|vendor\)"