topic Re: Wiring OSL output nodes in 3ds Max Programming Forum

Wiring OSL output nodes

andres.hernandezB63FL — Wed, 17 Aug 2022 15:16:22 GMT

Hi everyone!
I'm very much stuck with this one so I was wondering if someone could give me a hand.
I have created two OSL nodes:

idOSL.OSLpath = (getdir #maxroot) + "/OSL/" + "GetMtlID.osl" mapOSL.OSLpath = (getdir #maxroot) + "/OSL/" + "Float1ofN.osl"

I need to connect to the mapOSL(Float1ofN) index input, the index output of the idOSL(GetMtlID), but I can't find a way to access to the specific out since the GetMtlID has 2 outputs (color and index)
I really appreciate any help.
Thanks a lot

Re: Wiring OSL output nodes

andres.hernandezB63FL — Thu, 18 Aug 2022 01:22:26 GMT

I found the solution. If anyone is stuck with the same, you need to use the texture map "MultiOutputChannelTexmapToTexmap ".
So in my case it would be something like this:

outMap = MultiOutputChannelTexmapToTexmap sourceMap:idOSL outputChannelIndex:2 mapOSL.index_map = outMap

Re: Wiring OSL output nodes

campion_kirkham — Fri, 18 Apr 2025 22:59:21 GMT

Thank you for sharing your solution!