https://bugs.freedesktop.org/show_bug.cgi?id=29725
--- Comment #3 from jonathan bioinfornatics@gmail.com 2010-08-21 11:06:29 PDT --- with gam configuration file: shadows = true noframebufferobject = false
==> crash ____________________ shadows = false noframebufferobject = false
==> crash ____________________ shadows = true noframebufferobject = true
==> no crash
____________________ shadows = true noframebufferobject = true
==> no crash
then in 0ad code when noframebufferobject is false it try use EXT_framebuffer_object extension