Author Topic: Label bump not working correctly  (Read 3073 times)

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Offline pegasusfoil

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Label bump not working correctly
« on: August 21, 2019, 03:12:51 am »
I am completely new to Keyshot.

I need to have an embossed logo on a product and as you can see from the screenshot it is a .png file with transparent background.

It looks fine under diffuse, but as soon as I move it over to bump, the entire part turns black.

What am I doing wrong?
« Last Edit: September 11, 2019, 01:28:52 pm by Bruno F »

Offline RRIS

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  • Renze Rispens - industrial designer @ npk design
Re: Label bump not working correctly
« Reply #1 on: August 22, 2019, 02:44:07 am »
Bump maps need a little bit of a gradient between black/white to create the 'ramp' to go from normal to raised surface. If you have a hard edge between black and white you might not see the bump map clearly.
Another thing is that the white areas are the raised areas (with positive bump values between 0-1). So, maybe your logo is black, which makes the bump non-existing (value 0).
And finally, you should probably not use transparent images for bump maps. White on a black background works best.