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View Full Version : Checking "Motion Blur" on causes floor and ceiling to disappear

KevinKraeer
10-13-2007, 08:23 PM
I did a quick search on this but I didn't find quite what I was looking for. I'm working on an office environment, and this scene has squashed cubes for the ceiling and floor. However, in renders the ceiling and floor do not appear; unless I uncheck "Motion Blur" under the Render Stats rollout for both the ceiling and floor objects.

Has anyone else encountered this? I'm using Maya 8.0 and the Software Renderer. Anti-aliasing is set to "Production Quality" and I have 3D Motion Blur turned on, at default settings. The floor and ceiling objects have a simple lambert shader with a file in the color channel. I've checked the normals and everything appears correct. Any advice is much appreciated!
KevinKraeer
10-14-2007, 05:04 PM
Well, I "fixed" it. I just made a new camera (I had experienced the errors using "persp"). In the new camera everything appears and blurs as expected. Would sure like to know what the actual problem was though. I even investigated the shutter angle setting, but it was set to 144, which seems pretty typical. I expected it to be 0 or something weird. Anyhoo, if you have any ideas of what the problem with persp might be I'd still like to hear them.
KevinKraeer
10-15-2007, 03:54 AM
Well it seems I spoke too soon. During the course of the day, objects whose motion blur checkbox was "checked" appeared and disappeared at will in my one-off renders, even with the new camera. Usually it was a large object like the floor, ceiling, or a wall. As always, unchecking 'motion blur' would always make the object appear in the renders. Any advice or even workaround solutions would be much appreciated.
pixlix2
10-15-2007, 05:48 AM
I had the same problem with a disappearing floor, Maya software and MB. It took me a while to to fix it. In my case the problem went away after adding more subdivisions to the plane...maybe it works for you, too

greets
KevinKraeer
10-15-2007, 05:30 PM
Thanks pixlix2, I'll give that a shot next session.
JohnBellas
10-16-2007, 08:02 PM
i've had all sorts of problems like this that have been fixed upon creating a new camera. i can't offer a very technical explanation as to what exactly makes this happen, but what i can say is that the cameras in maya can simply become corrupted. i've had many instances of alpha channels not behaving as they should, and ultimately it gets fixed by creating a new camera from scratch. duping the original camera won't even work.
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