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Weird polygon glitches

Posted: Thu Mar 23, 2017 2:09 am
by wrenthereaper
I'm trying to render this spaceship that I purchased from Turbosquid https://www.turbosquid.com/FullPreview/ ... ID/1113482.
I went through the standard procedure of converting it to Octane, and it looks fine as a still:
Image

In motion however I get this really strange issue with the polygons of the model showing really odd texture shading that's super inconsistent from frame to frame.
If you look at the difference between these two frames that are back to back in my sequence, you'll see what I'm talking about:
Image
Image

Here's a gif of what I'm talking about in motion: http://i.imgur.com/RyZdIO5.gifv (ignore the red flash)

Things I've tried:
- saving as editable mesh and editable poly.
- unifying and flipping the normals
- restarting max/computer
- subdividing/tessellating the model
- changing as many different rendering settings as I can
- changing the material choice and type

Near as I can figure it's some sort of problem with the model. It's not a particularly high polygon model but for something like this it shouldn't be an issue. My first thought was that there was some sort of cloned object intersecting it perfectly but there's not. I dunno.

Anyone ever run into this issue? I'm hoping I'm being an idiot and it's a simple fix but can't seem to fix it. I appreciate any and all feedback.

Re: Weird polygon glitches

Posted: Thu Mar 23, 2017 7:14 am
by Goldisart
true grid of light inside the renderer
change your coordinate system
2017-03-23_10-13-26.jpg
...
+
this same effect occurs upon mixing with the dirt map,
bump maps

but usually it's the wrong choice ray Epsilon

Re: Weird polygon glitches

Posted: Thu Mar 23, 2017 6:33 pm
by wrenthereaper
That worked!!!!

Thanks so much!! I am extremely pleased by how easy of a fix that was. I figured it was probably some setting I had wrong for some reason. My "Ray Epsilon" was set to 0 but setting it to 0.01 fixed it instantly.