Hi, I''m new here. I read the tutorial from NeHe and I''m trying draw a triangle and square. It''s no problem when running in windows mode. When I switch to fullscreen mode, the shapes show up but the color became navy(it should be white). So I tried to add the line "glColor3f(1.0f,1.0f,1.0f)" just before drawing the two shapes, what happened, it still navy. The strange thing is I tried another color(red), and now the shapes are gone(black, same color with background). I have no idea what''s going on, it displaed fine in windows mode. I''m using windows xp with voodoo 5 video card. Could anyon help? Thanks

Well, problem solved.
I download the CA Voodoo3/4/5 driver from:
http://www.voodoofiles.com/
(the 3rd party driver)

simply change the Gamma setting from 3dfx tools after installed
the driver for XP.
Now the color seems OK running in fullscreen mode.