User Tools

Site Tools


wiki:development:glx-xlib-workaround

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
Next revision Both sides next revision
wiki:development:glx-xlib-workaround [2020/01/23 18:21]
uli42 [Approach]
wiki:development:glx-xlib-workaround [2020/06/02 19:13]
uli42
Line 11: Line 11:
 Use a wrapper/proxy library provided by Mesa. The applications will use the supplied libGL.so, which in turn uses the lib interface to talk to the X server (nxagent) rather than the GLX interface. From the applications' perspective, they have GLX 1.4. Use a wrapper/proxy library provided by Mesa. The applications will use the supplied libGL.so, which in turn uses the lib interface to talk to the X server (nxagent) rather than the GLX interface. From the applications' perspective, they have GLX 1.4.
  
-Please note: the following is not current anymore since mesa now mainly uses meson for building. Please consult https://mesa3d.org/llvmpipe.html for a description how to compile the required libraryNot that that instructions are incomplete as of Mesa 19.3.2you need to call meson with some further parameters: meson -D glx=gallium-xlib -D gallium-drivers=swrast -D platforms=x11 -D dri3=false -D dri-drivers="" -D vulkan-drivers="" -D buildtype=release -D optimization=3+ 
 +==== Mesa 19 and newer ==== 
 +Please note: the instructions below are valid for olter Mesa releases. In Mesa 19 //meson// is recommended for building. Please consult https://mesa3d.org/llvmpipe.html for a basic compilation instructionSince those instructions will not work out of the box (Error: "gallium-xlib conflicts 
 +with any dri driver"as of Mesa 19.3.2 you need to call //meson// with some further parameters like this: 
 +<code> 
 +meson -D glx=gallium-xlib -D gallium-drivers=swrast -D platforms=x11 -D dri3=false -D dri-drivers="" -D vulkan-drivers="" -D buildtype=release -D optimization=3 
 +$ ninja 
 +</code> 
 + 
 +==== Debian Buster and Mesa 19.3.2 ==== 
 + 
 +<code> 
 +$ (download and extract tarball from mesa3d.org) 
 +$ cd mesa-19.3.2 
 +$ mkdir build 
 +$ cd build 
 +$ meson -D glx=gallium-xlib -D gallium-drivers=swrast -D platforms=x11 -D dri3=false -D dri-drivers="" -D vulkan-drivers="" -D buildtype=release -D optimization=3 
 +$ ninja 
 +$ LD_LIBRARY_PATH=`pwd`/src/gallium/targets/libgl-xlib/:${LD_LIBRARY_PATH} glxinfo | grep 'GLX version:' 
 +</code> 
 + 
 +If you want you can copy the libgl-xlib directory to some location of your likes and write a small wrapper "x2goglx" for starting GLX applications: 
 +<code> 
 +#!/bin/sh 
 +LD_LIBRARY_PATH=<your directory>/libgl-xlib exec "$@" 
 +</code> 
 + 
 +<code> 
 +$ chmod u+rx x2goglx 
 +$ x2goglx glxinfo 
 +</code>
 ==== Ubuntu 14.04 ==== ==== Ubuntu 14.04 ====
  
Line 63: Line 93:
 ebuild "/usr/portage/media-libs/mesa/mesa-${mesa_version}.ebuild" clean ebuild "/usr/portage/media-libs/mesa/mesa-${mesa_version}.ebuild" clean
 </code> </code>
 +
 +===== Matlab 2019b =====
 +
 +Compile like this:
 +<code>
 +meson -D glx=gallium-xlib -D gallium-drivers=swrast -D platforms=x11 -D dri3=false -D dri-drivers="" -D vulkan-drivers="" -D buildtype=release -D optimization=3 -Dprefix=/usr/local/mesa-20.1.0/
 +</code>
 +
 +To make Matlab load the new driver modify Matlab's lib search path:
 +cp $MATLAB_DIRECTORY/bin/.matlab7rc.sh ~
 +
 +Edit the file ~/.matlab7rc.sh, find the glnxa* section and add ''/usr/local/mesa-20.1.0/lib/x86_64-linux-gnu'' to LDPATH_PREFIX
 +
 +Add to your .profile: export MESA_GL_VERSION_OVERRIDE=3.0
wiki/development/glx-xlib-workaround.txt · Last modified: 2021/10/25 21:01 by uli42