In the spirit of being short and sweet, that fits very well with the concepts of Glucose:

  • it's an OpenGL based acceleration architecture (as XAA and EXA);
  • it uses Software/Xgl code, so it accelerates everything using exactly the same paths as Software/Xgl does, so there's no duplicate code/work;
  • all driver code is limited to just initialising it (a call to glucoseDriverInit).

Known issues

  • Xorg will crash if the number of clients reaches zero.
  • Changes to the screen geometry via RandR extension are not yet supported.


Source is only available from Git and for Intel cards. You need to follow the instructions to build a modular Xorg, but using instead:

  • yuv-porting branch from pixman module,
  • master of Software/glitz module,
  • glucose-2 branch from xserver module,
  • glucose branch from xf86-video-intel module. Then add the following line to the Device section of you xorg.conf:
  Option  "AccelMethod"  "glucose"


If things are slow check on the resulting /var/log/Xorg.0.log for the following (or similar) lines:

 AIGLX: Loaded and initialized /usr/lib/dri/
 intel(0): Using GLUCOSE for acceleration

If either is missing then you're either using glucose with GL software rendering, or no glucose at all.