I'm guessing the bump depends heavily on the lighting (or maybe cam angle ?) too, or so it seems from the last thing i've tried. The brick in the shades parts seem to pop out much more than the ones in the light. The again, on the far right wall, the bumps are clearly visible even in the light while on the closest right wall they're much less, is that because of the cam angle ?

Hmmmm, but would a bump map be seen from such a distance in case of bricks ?

@thomthom said:

Worked fine.

Maybe you can post a small sample model to illustrate your problem? I don't know why it won't work for you.

Now i'm confused lol .. Your materials list looks completely different from mine.
From what i've read in tutorials, i add my texture, then in the materials window, i select it, open "maps" on the right pane, check bump, click the "m", set it to "Texbitmap" scroll down, add the bump map location.

But in your materials list, i see the bump map listed seperatly on the left, are u using vray 1.49.01 ?

And it looks like it works now but not as i thought it would, i expected it to make the bricks pop out more, i just tried again and don't see much difference between a 5 and 20 multiplier.

bump map test.skp

@thomthom said:

I've not seen, or can find, that texture as part fo the stock textures in SU... Can you post it here? Then I'll try it out.

Whoops, thought it was a stock one.

@thomthom said:

Can you post a sample of the bump not working? along with the bump map itself?
Hard to tell without hands on - as it should work.

Have you tried adjusting the multiplier value for teh bump?

I made the bump map out of the stock brick 2 texture in Sketchup, exported the textured, made it greyscale in photoshop and changed the levels a bit. It works great for displacement but no go for bump. And yes, as u can see i've set the multiplier up to 5000 and everything in between.

Hi all, i'm having a problem with bump mapping in Vray.

I made a bump map for a texture but when i apply it as bump map in Vray to my texture, nothing happens. I don't see a difference in the material preview window, nor does it render the bump.
However, if i use the same bump map as displacement map, it works, in the preview window and in the render (if i group my model).

I'm a newbie at Vray so i'm probably doing something silly lol. What am i missing ?
And also, is it normal that rendering with a displacement map takes so long ? Will rendering with a bump map be faster ?

Sketchup version : 8.0.3117
Vray version : 1.49.01