[semi-extrinsic]

Hmm, IIRC Inventor does realtime raytracing, with first image after ~10 seconds and production quality images after a couple of minutes (this was on a XPS 15 laptop with the GTX 960M GPU).

My guess is that it's one of the features Autodesk doesn't want to put in Fusion360 so they retain a market for the more expensive Inventor.

[GuB-42]

I don't think we can call it real-time below 6 FPS (0.17s). That's the framerate of cheap anime. And the goal should be at least 30, which is a typical video game framerate.

The only examples I have where real-time raytracing is used are demoscene productions where shapes are defined using simple mathematical primitives. (see the 4k intros "absolute territory" and "zetsubo", both from prismbeings for example).

[StavrosK]

Ten seconds is hardly real-time, that's how long Fusion takes too. You can't easily adjust the camera view when you have to wait ten seconds between adjustments.

That said, I think Fusion shows you a really low resolution image in real time, if I remember correctly.