Sketchup vray bump map (extra geometry appears when rendering)

[yuri_ch]

Hi! I’ve posted this topic on chaosgroup forum but maybe somebody had the same problem. When I use bump map to add a noise there are some lines on the surface appears in rendering with GPU. Here is a simple shape to which bump map has been applied. Guys, could you check if you get the same when in GPU mode? I’ve spent a lot of time trying to figure out what can really cause it but no success. Thanks.

vray bump issue.skp (305.2 КБ)

[bifterx]

You get the same in CPU rendering, it just shows more under GPU probably Duse to the different optimisations.
It seems to be a geometry tessellation issue. You can resolve it by adding two (softened) lines to isolate the area.

hope this helps.
cheers

[yuri_ch]

Just right now found what solves the issue “texture placement type” should be set as 3d (object space).