Rendering Glitch: Geometry disappears.

[Jozvex]

Is the camera just on the inside of a wall? If so the renderer might be having trouble determining what it can/can't see.

In that case you could move the wall or camera. Or maybe it's the clipping planes?

[Drublic]

Thanks for your suggestions, Jozvex.

The only walls are the ones you see. That is, there is no wall that the camera is in front of or behind besides the ones that are visible in the screenshot. So I don't think that is the problem.

I have adjusted the clipping planes so that they are Near: 0.01 and Far: 10000 and it still makes no difference.

Any other ideas?

[floze]

Sounds like a motionblur problem. If motionblur is on, mentalray retesselates all of your objects, and maybe you have some polygons which mr doesnt like. Try to triangulate your whole scene before rendering.

[Drublic]

Thanks, floze.

Well, triangulating did not help, since I am not using mental ray, but it seems like motion blur is the problem. If I turn it off, it renders fine.

I checked the documentation and it says that Maya has problems rendering "Complex backgrounds" with motion blur if they are stationary, and that I should render the foreground and background separately and composite them later.

This seems entirely unnecessary to do for such a simple scene. I'm wondering if changing motion blur settings might help. I have no idea where to start, though.

[floze]

Thanks, floze.

Well, triangulating did not help, but it seems like motion blur is the problem. If I turn it off, it renders fine.

I checked the documentation and it says that Maya has problems rendering "Complex backgrounds" with motion blur if they are stationary, and that I should render the foreground and background separately and composite them later.

This seems entirely unnecessary to do for such a simple scene. I'm wondering if changing motion blur settings might help. I have no idea where to start, though.
Have you set the mblur to exact or linear? I'd leave it on linear unless you have shape deformations. Linear takes the object's tranformation only (position, rotation, scale) into account.
And, compositing the background later is in most cases better than doing it all in one.

[Drublic]

Have you set the mblur to exact or linear? I'd leave it on linear unless you have shape deformations. Linear takes the object's tranformation only (position, rotation, scale) into account.


Those options do not appear for Maya Software rendering. Either that or I can't find them. They do appear in Mental Ray, though.

In any case, I was racking my brain trying to figure out a way for the background or camera to move a little so that the motion blur would not freak out and as always, the most obvious answer is staring at you right in the face:

I unchecked the "motion blur" attribute for all the walls and stationary objects and it renders fine now. :D

Thank you for all your help. Sometimes all you need is for someone to point you in the right direction.

[markbones]

Can you post a wire of just these 2 surfaces/polys? How are these 2 polys subdivided? Sometimes if Maya cannot see enough sides of a face it will not render the object - if motion blur is on, once the camera starts moving you'll see them in the render, but if the camera is stationary, zippo. If the walls are simply one big face, try subdividing them a few times so you are able to see multiple edges/faces from the camera view. Make take a few divisions. Just an idea.

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