The little "m" button stands for editing the map of that item. Besides, I found that you don't have to turn the whole sun off, making the whole result dark. You onlt have to get inside the sun map, and turn off shadow

You're right, I googled for pretty long, and I found someone saying that bumping without difusers will have problems on sketchup, is that true?

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Added After testing:

Confirmed that's the cause. As I'm a newbie on V-ray for sketchup, I thought bumps can be used without an exact diffuse map. (I used only color settings in diffuse)

2015 Version with hidden Geometry on.

PS: I did another test with only a simple C shape solid and the same thing happens. Nothing really complex or hidden geometries i guess. But Sstill....

Eaxmple_2015.skp

Is this really a too easy question or it's just can' t be solved so far?
I'm a student working on an assignment and I have to decide which software I'll be using. If there is a way to solve this, I'll still be using sketchup for its convenience, but if not I'll go for revit for rendering.

I was trying to get a cloud shaped opening on a wall and apply a rough concrete material with a bump on the wall. However, the bump was uglyly subdivided by the geometry of the rounded edges. Is their a solution or a workaround??

Thx.

Skp File