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Ariff Jeff avatar image
Ariff Jeff asked ·

Gobo chromatic abberation?

Is it possible to get a chromatic aberration effect on a texture that is input into the Slide map of the gobo node?

For example I have a black and white texture to help fake water caustics: caustics-001.png

The spot light emitted this gobo texture: gobo.png

Similar to what I want (mockup in photoshop): gobo-chrabb.png Ignore the edges of the plane since I just shifted the rgb channels of the whole image over a few pixels.

Can I get this effect on the texture natively in Arnold C4D?

Thanks!

texturelightinggobo
caustics-001.png (84.5 KiB)
gobo.png (610.5 KiB)
gobo-chrabb.png (606.0 KiB)
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Lee Griggs avatar image
Lee Griggs answered ·

You can use Shuffle with Cell Noise to do this. Example here.

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Use the float_to_rgb shader.

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Works great now, thank you!

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Thanks, Lee. I've read through the example. Unfortunately I've gotten stuck at the end because it specifies to connect some nodes into the R, G, and B inputs of the Shuffle node but these only exist in the MtoA, not C4DtoA. I'm sure there's just a quick and easy C4DtoA equivalent for this but I'm too tired to figure it out right now. I'll try tomorrow.

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