fixed incorrect checking of the existence of GLX_EXT_swap_control and friends
[demo_prior] / src / demo.h
2020-12-12 John Tsiombikasdbg gui, imtk text drawing
2020-12-12 John Tsiombikas- added libdrawtext
2020-12-03 John Tsiombikaspart system
2020-12-03 John Tsiombikasinitial commit