On Jun 23, 2005, at 11:30 AM, Pierre-Olivier Latour wrote:
try the following:
- make sure the composition you play clear its background http://developer.apple.com/qa/qa2005/qa1434.html
- use the /Developer/Examples/Quartz Composer/Player sample code
instead
- lower your screen resolution
Pierre,
Thanks so much for your recommendations. I now have a Clear (black)
patch on rendering layer 1, and am now using the sample code in /
Developer/Examples. But, I get the same results as before (garbage
frames).
However, if I lower my screen resolution to 1600x1000, I don't get
garbage (either with my code or the example code), so it would seem
that there is an element of GPU load involved, like maybe the GPU
isn't rendering the next frame quickly enough, so that when it gets
displayed it shows garbage? I thought a frame wouldn't get displayed
until it's fully rendered? Or maybe the next full frame can't get
displayed quickly enough?
My composition isn't complex, it just uses an image importer to
display a small 72k image on the rotating cube clip (10rpm), then
adjusts the gamma and applies a Gaussian blur.
