Ray Tracing: Pixie vs. Prman ?

[Alfred Young]

Is there any particular difference w.r.t. RT that Pixie handles differently than Prman?

I ran prman & pixie through the gauntlet of a fractcal sphere in the SPD package, turning on RT (obviously), shadows, pixel sampling at 1, gaussian filtered, and max ray depth recursion of 4.

Pixie blew prman out of the water, but the image appears to be more blurry, and definitely less aliased than prman's render.

Pixie: 5 minutes, prman: 1 hour

[Okan Arikan]

   Hi Alfred,

   There should not be a drastic difference between PrMan and Pixie in terms of raytracing. I know that right now, Pixie's raytracer is faster than PrMan, but I suspect their implementation will get more streamlined in time. However an order of magnitude difference is a little too much.

    If you think Pixie is computing the wrong image, please send me the rendered image or even better a RIB file+shaders that demonstrate the difference.

    Thanks

    Okan