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Does rendering outside the canvas still use CPU?

Stuart Geipel
Greenhorn

Joined: Jun 27, 2009
Posts: 10
I'm doing active rendering for a game, and I was wondering...

If you try to draw something outside the frame, (as in whatever I drew won't be visible) will it sill use just as much CPU?
Stuart Geipel
Greenhorn

Joined: Jun 27, 2009
Posts: 10
Bump. Is the answer to this unknown?
Paul Clapham
Bartender

Joined: Oct 14, 2005
Posts: 18989
    
    8

I don't know the answer to that. However it seems to me that you could set up a benchmark to find the answer to that. One piece of code would draw in a visible place, the other in a not-visible place, and you would compare the run times. (I don't think you can find elapsed CPU time, but isn't elapsed clock time what you are really interested in?)

It might turn out that the answer is "It doesn't matter" but only you can make that decision for your situation.
Stuart Geipel
Greenhorn

Joined: Jun 27, 2009
Posts: 10
Tried myself: Rendering outside it doesn't use CPU! Yay!
 
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