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emmanuel humbert avatar image
emmanuel humbert asked

HtoA can't remove shadow from mesh light

I find that if I use an Arnold Mesh light, other lights will cast shadows off the mesh used for the light. Is there any way to switch off the shadow?


I already tried to disable the cast shadows tickbox of the mesh light, it's not working.

My geometry has an emissive shader, shadows disabled, opaque disabled and is not visible to diffuse/spec.

If I turn off the meshlight the geo is not casting shadows but as soon as I turn on the mesh light it will cast shadows again.

htoalightingmesh lights
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Stephen Blair avatar image
Stephen Blair answered

This is not HtoA.

An Arnold light has to be visible to shadow rays. That's why a visible mesh light casts shadows.

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