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Smooth update "skipping"

Started by nzo Jan 11, 2005 at 8:11 AM 1 replies 2k views

Original Post

Jan 11, 2005 at 8:11 AM

I sometimes see the usual smooth update "skip" or "judder" for no apparent reason. There could be less rendering / processing going on and still it happens. I am using flip and wait for vblank and the framerate dips to 40 or so, then returns to 60. Is it a good idea to grab all the available cpu etc to the program?

Sly

Jan 12, 2005 at 9:28 PM

My game update loop usually looks something like this

procedure TForm1.ApplicationIdle(Sender: TObject; var Done: Boolean);begin  Done := False;  Update();  Render();end;

Note that I do nto use a timer. No commercial games use a timer for their main loop. They all basically do what I described above (with possibly some more code for maintaining a capped framerate or performing updates at a constant rate while allowing more draws, etc).

nzo

Jan 15, 2005 at 2:18 PM

I`ve been looking around, but do you have a simple example of the capping?

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