as gemwin features things like stereoscopic display alternatives i was wondering if it might be easy to implement something that distorts the complete gemwin output in a polar coordinate system (for projecting in domes and planetariums).

it might be not too hard to build something like that using snap2tex a sphere and some adjustments in the texture coordinates. but somehow i sense a strong smell that openGL might feature such things "directly"

two examples what i mean by "polar coordinte system" are attached

best wolgang