I've been going through the opengl nehe tutorials and I am on the 10th one, but I've noticed in all the programs I've made there is a big speed difference between fullscreen mode and non-full-screen mode. That is when it is not full screen everything rotates more slowly, then when I switch to full screen all of a sudden everything spins really fast and increases or decreases more quickly. What's going on?? Thanks, Brian

Sneftel

1,788

July 01, 2005 11:12 AM

windowed applications tend to be less efficient, since (a) they have to share the device context with other applications, and (b) if they're double-buffered they have to blit in order to swap buffers, instead of switching pointers in video memory. Don't worry about it.

Anonymous

July 07, 2005 08:16 AM

i'll think you'll find this is a sync issue, he has video sync on in opengl fullscreen and none in windowed

Kalasjniekof

246

July 07, 2005 08:22 AM

He doesn't. His application goes FASTER in fullscreen mode, which really isn't a problem.

Anonymous

July 07, 2005 02:56 PM

my apologies, i read the post a bit to quickly, thought fullscreen was slower. what i meant by that anyway is that if u rotate the cube in tut 7 for instance, it'll spin rapidly in windowed as there is no video sync on, switch to full, sync is on and all is smoother.

sorry for the hickup :)