Quote - Good news - I have successfully rebuilt the light shader that can process IES-style sample information, at least for the axially symmetric forms.

Now I have to rewrite the IES file parser/interpreter.

The render shows 3 copies of the same light, but the back wall is turned so the distance to the light is different for each. It shows how complex this lighting can appear.

The splotches on the ground are IDL sample artifacts - I was using really cheesy settings for quick results.

 

Yep.  That would do the trick.

 

I just got P2012 the other day, and have been pretty impressed with the results I can get through Firefly these days.  Will save me time not having to export every scene to 3dsmax or Luxrender, or whatever, just for rendering with realistic light.

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Tools :  3dsmax 2015, Daz Studio 4.6, PoserPro 2012, Blender v2.74

System: Pentium QuadCore i7, under Win 8, GeForce GTX 780 / 2GB GPU.