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newbie
12-14-2000, 12:43 AM
Is there a way to do pixel exact line drawing in opengl?
Beside drawing images, I need to do simple things like drawing points, lines, rectangles, circles etc for a GUI. I once tested it with a 45 degree diagonal line (with glBegin(GL_LINES)), but when I resized the window, the line changed a bit, which will look very ugly in a GUI.

zed
12-14-2000, 11:57 AM
use an ortho projection matrix with (0,0) mapping as the bottom left of the screen and (screenwidth,screenheight) mapping as the top right.
your lines will look better if u use antialiasing as well