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lamar lowder avatar image
lamar lowder asked ·

Ramp RGB to bump map

I have a grey and white pattern created in Arnold ramp_rgb node (no interpolation). When I plug this into the bump2d node and connect to Normal geometry input I get no bump. Is there some other node I need to apply here?

Thanks.

normal map
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Sounds correct to me when the ramp has no interpolation. What is your pattern, what would you like to achieve?

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Peter Horvath avatar image
Peter Horvath answered ·

To achieve this effect you need a little filtering in the input. For example using a Linear interpolation in the ramp to have slight falloff on each side of the lines.

You can also use a checkerboard shader if the lines are equally distributed.


ramp-falloff.png (16.6 KiB)
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lamar lowder avatar image
lamar lowder answered ·

Hey @Carlos Dordelly . Sorry for the long delay in my reply. I had to move onto a different solution to finish that job.

I'm now into another job where I wanted the ramp to create lines to serve as a bump map and the same thing happened again...nothing. Here's a screenshot of my setup.


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Carlos Dordelly avatar image
Carlos Dordelly answered ·

Hi! Can you share a screenshot of your Ramp RGB?

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