Y-Phil posted at 1:09 PM Wed, 15 January 2025 - #4492861

Speaking of AO and Surperfly: excerpt from the page: 
https://www.posersoftware.com/documentation/13/HTML/index.htm#t=Poser_Reference_Manual%2FMaterials%2FNodes-Cycles%2FShader.htm

The current implementation of OptiX does not support the use of the AmbientOcclusion node in shaders. If you need to use Ambient Occlusion you will need to use a different hardware rendering option.

The way I showed doesn't work in Optix in Poser 12 (returns 0, all black), works fine in Cuda or CPU.

Steps in the image below will come out all black in P12 if AO is rendered in Optix.

I don't think that version of Cycles P12 used supported Optix AO in Blender either.

It works fine in P13, because it is a much newer version of Cycles. 

This is a P13 render, not a P12 one... I am sure people can imagine the steps coming out all black (0) in P12 in Optix, because they will.....

If I had to guess, that part of the P13 manual either never got updated, or very few people even know it works now....

But if anyone has P13, they way I showed for this way of setting up simple AO, does indeed work with Optix.

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