Unexpected Push Modifier Iray Render

phong3d

Yesterday, I applied a push modifier to a figure - normal workflow, everything worked as expected. This morning, I bought a new figure from the shop (Hagar), the pulled the figure into a new scene and ran a quick Iray render. The figure was "bloated" universally, in much the same way as the figure looks immediately after you first apply a push modifier, before dialing it back to normal. I checked the other displays, but the figure looked perfefctly normal in wireframe, texture shade, etc - it only applies the "bloat" in the Iray render (first attachment). Rendering in 3Dlight looks normal

I tried other figures, but the render was as expected. So, I brought in a second figure, and the render only "bloated" the Hagar model again, but left the second figure normal as well (second attachment). Note that load order doesn't change the outcome - the Hagar model can be first or "not first" and the result is the same.

I tried Edit > Object > Geometry > Remove Push Modifier, but there aren't any in the scene, or applied to the character. 

I then created a new scene, only with the Hagar figure. I applied a push modifier, and the character bloated as normal. I then removed the push modifier I created, but the render looks the same. 

Finally, I did the same steps as above, only went through the entire push modifier workflow this time - Adding a push modifier, creating a weight node, setting the offset value, zeroing out the fill and then painting a smiley face... Alas... the third attachment.

Is this a bug? Is there something stuck in the Iray cache somewhere? Something with the metadata of the Hagar figure (maybe it's carrying a push modifier flag somewhere?) I can't seem to find anything in the render settings controls which would directly affect cache/metadata, and I tried switching between CUDA and GPU with the same results. I have an Nvidia RTX 2080 SUPER.

Richard Haseltine

Does this go away if you use the material preset on a default figure (or even on the Hagar character after loading)?

DrunkMonkeyProductions

Given what you've said and tested, it's more than likely a texture related issue.

 

Check the settings for Displacement, Bump and Normal, and try dialing those back.

 

barbult

Take a look here. Someone else discovered this same issue.

phong3d

Looks like that's it - set Min/Max Displacement to -.1/.1. I had been working with Push Modifiers so I just assumed that was the issue. I'm glad it's a figure problem and not some esoteric rendering voodoo. Thanks for responding, everyone - I appreciate it!