/etc/wings3d.rc is in wings3d 2.1.5-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 | # uncomment this if you have problems with OpenGL (vertices are small,
# faces are invisible, ...). This is caused by buggy drivers, buggy
# graphics cards, etc.
#
# You usually want to leave this as-is:
# LIBGL_ALWAYS_INDIRECT=1
# export LIBGL_ALWAYS_INDIRECT
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