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Rendering with Arnold in CINEMA 4D using the C4DtoA plug-in.
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Ramp RGB to bump map

4 REPLIES 4
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Message 1 of 5
lamarKPDHG
546 Views, 4 Replies

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.

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4 REPLIES 4
Message 2 of 5

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

Message 3 of 5
cdordelly09
in reply to: lamarKPDHG

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

Message 4 of 5
lamarKPDHG
in reply to: lamarKPDHG

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

387-screen-shot-2017-11-05-at-15233-pm.png

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.

Message 5 of 5

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.

405-ramp-falloff.png

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

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