creon@nas.nasa.gov (Creon C. Levit) (08/11/90)
I know that this has come up before, but how do you draw "large" points
(i.e. 2x2 pixels) efficiently using GL. Here are some ideas that I have
thought of and perhaps even tried. Is there a "right" way (on the VGX?) or
any other ideas?
1. Use cmove() and charstr("."). This is slow and kludgy.
2. Draw the image halfsize and use rectzoom() (of course this magnifies
*everything*)
3. Keep careful track of transformation matrices, map world-x-y-z to screen-
x-y-z, use rectf(screen-x-y-z), or filled polygons in screen space.
What I want is pointsize(int) that behaves like the GL call linewidth().
--
Creon Levit
mail stop T045-1
NASA Ames Research Center
Moffett Field, California 94035
(415)-604-4403
creon@nas.nasa.gov (Internet)