Forums Houdini Lounge is it possible to layer or mix shaders in karma XPU ?

is it possible to layer or mix shaders in karma XPU ?

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habernir
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just want to know if its possible to layer or mix shader (principled shader or mtlx) in karma XPU

thanks
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jsmack
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XPU only supports select compatible shaders, layering is not possible.
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stephentywong
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jsmack
XPU only supports select compatible shaders, layering is not possible.
Do we have a work around?
For example: a matte white bottle with a gold and shiny logo on it.
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protozoan
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You can always go the route the game people go and prep your maps accordingly.

Like: metalness to 1 only where your shiny logo is, the rest being dielectric. Same with the colors etc.

It's nice if you can just have a library of pre-made mats and pop in a couple of layer masks, but without it you can definitely still render really nice materials.
Martin Winkler
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Mark Wallman
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It does make me wonder what renderman are planning with their LAMA MatX shaders and gpu rendering. Assuming LAMA will eventually work on GPU, will layers and mix nodes work in their case or not. Best
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Siavash Tehrani
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stephenvfx
jsmack
XPU only supports select compatible shaders, layering is not possible.
Do we have a work around?
For example: a matte white bottle with a gold and shiny logo on it.

The mixing can happen before feeding the ubershader inputs.

Attachments:
mixmaterials.jpg (63.6 KB)
materialnetwork.jpg (159.4 KB)
mixmaterials.zip (333.8 KB)

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