Software rendering: Anti-aliasing causing serious problems in C4.0.3 (windows)
by kurt (Kurt)
on
Jul 14, 2006 at 5:39:25 pm
I have a clip. It's smaller than the comp. It's not moving, and is centered in the frame.
Whole regions of the image will jump around when viewed on best quality, and when rendered. It's as if there was a harsh matte taking a chunk out of the image and moving it randomly up and down a pixel. Once again there are no keyframes whatsoever. NOTHING is moving via a transform of any kind.
Turning anti-aliasing off makes the problem go away.
Switching to OpenGL rendering makes the problem go away.
Switching back to software with anti-aliasing causes the problem to come back.
Anyone else experience this? The comp in question is slightly bigger than 1024x768, with the 1024x768 clip positioned slightly off-center.
Re: Software rendering: Anti-aliasing causing serious problems in C4.0.3 (windows) by Rayk Hemmerling on Jul 14, 2006 at 11:00:23 pm
actually, i've reported it to autodesk some time, ago. it's a bug which happens when you have a comp in an odd-numbered pixel format, aa turned on and render it on a dual proc or dual-core cpu. switching off aa or switching off "multithreaded" solved the problem.
i was under the impression, and i thought that i tested it, that this was fixed with the latest patch!?
The problem is definitely NOT fixed as of 4.03 by kurt on Jul 19, 2006 at 6:24:14 pm
The comp indeed had an odd resolution vertically, and this is a dual processor machine. Adding a single pixel to the comp size seems to fix the problem. I will file a bug report when I have time. This needs to be fixed as it is a serious problem and cost me a lot of time in the middle of a job, and will undoubtedly come up for others as well.
