Mental Ray ignores surface!


#1

Hi Guys!
Haven’t found a solution with the search so here we go… : When I render out my scene it just completely ignores a part of my object!.. All the other parts are rendered out nicely, but 1part misses… I can see it clearly in the viewports but MR ignores it!!.. I compared all the options in the Attribute Editor with a part that does render, but there is nothing different!
Somebody got a solution?
Thanx in advance…

pic.


#2

Does the Maya Renderer render all your objects? In this case you can rule out any object settings. If the problem still persists, try a brand new scene with MR loaded up (the MR nodes are created) and import your model and try rendering again.

Cheers,

Mr. Goodbyte


#3

Yes… No problems when rendering with the standard maya renderer, only in MR!

Tryed a new scene but it didn’t help!


#4

What’s the part made of, NURBS? If it’s SubD that could be your problem as SubDs in Mental Ray need to either be fully quad or fully triangles surfaces.


#5

Yeah it are all subdiv surfaces… Or they began their life as Polygonal Cubes, but converted in Subdiv along the way… How can I make them fully quad or trianguar?

edit: I could select the objects in Polygonal Mode and go to Polygons - Trianguate / Quadrangulate, but that doesn’t seem to have any effect on MR…

Thanx all for the input by the way!!


#6

You can edge loop the tri’s and 5 sided polys out before converting to subd’s or you can use the collapse heierchy tool to make it all quads, however that will make it pretty dense.


#7

this did the trick for me!.. But isn’t that weird that some surfaces DO render out and other DON’T… I didn’ do anything different with the surfaces that don’t render out!


#8

And isn’t there another solution without making the mesh so dens?


#9

Yes, edge loop those polys out before converting, that’s the only other solution.


#10

Just PolySmooth or use Mental Ray approximations.


#11

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