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Nano Particle asked

Arnold equivalent to Corona multimap

HI @Mads Drøschler , is there an equivalent to the Corona multimap in Arnold, that is supported by Arnold GPU rendering in 3ds Max?

maxtoa
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A C avatar image
A C answered

Try OSL -> Switchers -> 1 of N

Depending on what you're trying to achieve you could drive the index with other scene attribute data, or uvw data etc.

OSL -> UVW Coordinates -> f.e. UVW Channel

or

OSL -> Scene Attributes -> f.e. Material ID or Object ID


Let's say you want a variation of leafs in different colors, connect your maps to the inputs of a 1 of N (color) map and drive the index f.e. via material or object id

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Lee Griggs avatar image
Lee Griggs answered
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Mads Drøschler avatar image
Mads Drøschler answered

For the more exotic Element ID, which returns independant IDs inside a larger mesh, a grass clump, or a tree with leafs, use DCM to generate the ID and fetch it with a uv map.

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