mike@ames.arc.nasa.gov (Mike Smithwick) (04/07/90)
[]
I am trying to do some simple double-buffering in an intuition window.
(rendering to an offscreen rastport and clipblitting to the displaying
window.) Predictably, I am getting some of the flashing. In this application
the flashing is quite disturbing. Is there a convenient way to get around that.
One is led to believe that performing a WaitBOVP() right before the ClipBlit
would help to get rid it. But that doesn't seem to do a thing. What gives?
mike
*** mike smithwick ***
"I'm totally awed by what you've done!" (Arthur C. Clarke
commenting about Distant Suns)
[disclaimer : nope, I don't work for NASA, I take full blame for my ideas]rogers@iris.ucdavis.edu (Brewski Rogers) (04/08/90)
In article <46786@ames.arc.nasa.gov> mike@ames.arc.nasa.gov (Mike Smithwick) writes: >One is led to believe that performing a WaitBOVP() right before the ClipBlit >would help to get rid it. But that doesn't seem to do a thing. What gives? >mike > Two things: 1] WaitBOVP() expects a pointer to a viewport, but you probably know that. 2] WaitBOVP() doesn't Wait, but does a busy-loop so it sucks up CPU time. -bruce ------------------------------------------------------ Quantum _\/_ 2727 Eel Bruce (6502 RULES!) Rogers |\ Duck ( 0 0) Davis, Ca 95616 Quantum Duck Software, |\ \______/ / \\\ 916-756-2684 rogers@iris.ucdavis.edu |\ < < | \/ "My brain is on fire!" \________/ Quark!