Just to add..
In Arnold 4, we created an EXR composed of what we call 'castshad' layers, one for each light in the scene.
Each of these layers shows *all* of the shadows for *all* objects for *that* light.
The geometry objects are assigned a grey shader, in A5 it's something like:
base_color 0.5 0.5 0.5
Each light's block in the assfile fills the 'aov' param with something like 'key1Light',etc.
From your earlier answer, I understand that the shadow_matte block should be configured like:
But what I'm not getting is the relationship between the standard_surface block and the shadow_matte block.
so lpe's are theoretically possible.
Is this still true for version 18.104.22.168 ?
That would be fantastic and powerful. Thanks!
No, you can't do that with current shadow matte shader. We need to implement a version of the shader that uses closures, so that then you can use LPEs with it.
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