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I remember reading a while ago some articles about Lucas Films real-time rendering feature, planed for their future flicks. Actually, here's one (of the article

I remember reading a while ago some articles about Lucas Films real-time rendering feature, planed for their future flicks. Actually, here's one (of the articles): http://www.loopinsight.com/2013/09/24/lucasfilm-pushes-the-boundaries-with-real-time-rendering/ http://www.loopinsight.com/2013/09/24/lucasfilm-pushes-the-b... For open-source, I know that Blender uses Cycles, which fires ray-tracing renderings in the normal views on each change, and this so is for quite a while already.

wlesieutre 10y ago
Blender only runs raytraced previews when you set the view mode to "Rendered," not in normal operation. It's tough to work in because you don't get any of the usual UI like selection highlight; it's just a straight render defaulted to relatively low quality. Great for a quick preview though, especially while setting up lighting. And if you've been good with naming your objects you can always select things out of the document tree.