libGL error

[pradal]

When running PlantGL, I have liGL errors

libGL error: dlopen /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so failed (/usr/lib/x86_64-linux-gnu/dri/swrast_dri.so: cannot open shared object file: No such file or directory)
libGL error: dlopen ${ORIGIN}/dri/swrast_dri.so failed (${ORIGIN}/dri/swrast_dri.so: cannot open shared object file: No such file or directory)
libGL error: dlopen /usr/lib/dri/swrast_dri.so failed (/usr/lib/dri/swrast_dri.so: cannot open shared object file: No such file or directory)
libGL error: unable to load driver: swrast_dri.so
libGL error: failed to load driver: swrast

It seems related to openai/gym#509

One solution would be to add to the Docker image

apt-get install -y mesa-utils libgl1-mesa-glx

[thomasarsouze]

@pradal Can you specify a workflow please, I cannot reproduce ? I have visualea running, Webber&Penn demo -> plot3D and a successfull PlantGL window display.

[pradal]

I have the same workflow. When I plot with PlantGL, i have this error.
But I havn't a NVIDIA Card

[thomasarsouze]

Me neither... Will investigate this

[pradal]

libGL error: failed to load driver: swrast
X Error: GLXBadContext 161
Extension: 149 (Uknown extension)
Minor opcode: 4 (Unknown request)
Resource id: 0x600026

[thomasarsouze]

@pradal can you tests some possible workaround (doesn't look like stable solutions though) ?

• export QT_MAC_WANTS_LAYER=1
• defaults write org.xquartz.X11 enable_iglx bool and/or defaults write org.macosforge.xquartz.X11 enable_iglx -bool true
• export LIBGL_ALWAYS_INDIRECT=1 inside the container
• check XQuartz version
  (ref: Indirect GLX not functioning in some cases XQuartz/XQuartz#144)