View Full Version : Optimized Rendering and MENTAL RAY FOR MAYA bible
04-15-2004, 01:10 AM
Intresting read thought I'd post the link for those who havent read this yet.
04-15-2004, 02:08 AM
Hey cool, what a huge page!!
And he got the Vector Renderer to render wireframes without all the traingles!!!
Damn, there goes my old wireframe tutorial then....... *sniff*
04-15-2004, 05:42 AM
If I could perchance add a topic to similar webpages, I would personally want to know about how to set up frensel-reflections for mental ray in Maya (the realistic way if possible, and with other expamples than chrome objects).
If I could add a final word, that would be "diameter". :p
04-15-2004, 07:27 AM
Undseth, if you use the Dielectric Mental Ray shader, it will create proper fresnel reflections based on the IOR that you provide it.
04-15-2004, 07:47 AM
:cry: bad link
04-15-2004, 08:35 AM
I have to try it out in the next few hours. I've been puzzled by the IOR option in the DGS (or was it DSG) -material, but did not know up from down. I recently read that the "refraction" index of an object/material plays an important role in figuring out the "reflection angle" of materials. I guess it all makes sense in a way. Have to try it out though.
Haven't looked at the dielectric material yet. I guess it also works with the DGS material, or is this wrong?
Thank you Jozvex !
Um, I am assuming that say an aluminum pole has a subtle fresnel reflection. Is this correct? Or have I misunderstood.
04-16-2004, 01:41 AM
I'm not 100% sure, but I haven't actually seen any fresnel going on with my DGS shaders, maybe they don't do it.
The dielectric shader is really cool, especially for things like water and glass.
I wish someone would make a Fresnel utility node that could be plugged into whatever you wanted. Based on the actual fresnel formulas, not just "what looks right-ish".
04-16-2004, 08:03 AM
I wanna mess with all those cooky MR shaders, but I dont wanna do it till version 6 when I can have MR IPR render.... cause render times are just too long to mess around with settings.
but then agan, i havent even touched the tector renderer... maybe I'm missin' out? :surprised
04-16-2004, 08:15 AM
Well, I was about to try these shaders but I was thiking : Why Mr is so fast with classical maya shaders in raytrace and so slow with typical MR shaders ? Is it slow like this on XSI too ? Are these shaders special ones on XSI too ?
04-20-2004, 05:08 AM
Hi. pasto : I think they are the same. I am not sure that they are too slow in MR... for me even Maya's shaders too slow. He.
01-18-2006, 01:00 AM
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