There are all sorts of render engines out there; Pixie is an open source version of RenderMan, for example. The problem with a new render engine is accommodating existing shaders, but that's not unsolvable...

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The Wisdom of bagginsbill:

"Oh - the manual says that? I have never read the manual - this must be why."
“I could buy better software, but then I'd have to be an artist and what's the point of that?"
"The [R'osity Forum Search] 'Default' label should actually say 'Don't Find What I'm Looking For'".
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