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Mental Ray Net Rendering - Broken?
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  • Location: San Francisco, CA USA
  • Total Posts: 61
  • Joined: 22 August 2006 01:41 AM

When I render this file locally, it takes about 6 seconds.

When I send this exact same scene to the exact same machine via Backburner, the exact same frames take over a minute and a half each.

Please watch the video.

I show this example on my one machine as illustration that it is not a machine-dependent variable, but can tell you that the issue occurs across all machines in our network.

There seems to be some sort of “disconnect” between the render dialog window, and the render frame window.  It keeps spitting out “processing shadow” messages long after the frame appears to have finished rendering.  I’ve tried this with all different sorts of lights and shadows, but the resulting issue is always the same.  The only thing that seems to get rid of it is to disable shadows all together.

I am attaching the file I used for testing… Nothing crazy in the scene.  You’ll need to adjust your output path to your own network drive for the Backburner part of the test.

I’m feeling a little crazy at the moment, because it seems to be a pretty major problem, but I can’t find any settings on my side that are causing it, and at the same time am having a hard time believing that it’s been completely overlooked (or ignored) until now.

Any ideas on how I can make MR usable again?  Since I have to get renders out tonight, I’d much prefer someone make me look like and idiot and point out some setting I overlooked versus “Wait for the hotfix”.  ;)

Thanks,

Brittnell

Oh yeah… Also, anyone know what’s up with the “Soft Shadows” tick box at the bottom of the render window?  If I turn it off, then move the window, it sets back to on again.  I can’t find any way to get it to STAY off.



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  • zicher
  • Posted: 27 May 2008 12:24 AM

Something to do with Shadow Maps…
Changing the shadow types of the lights to Raytraced fixed the problem.

I notified the developers… there is something that needs to be investigated here.

Rob



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Thanks Rob!
That’s a bummer, but is good to know.
I’ll see what I can do with Raytraced shadows for tonight’s renders.



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By the way, HERE’S A VIDEO of that “Soft Shadow” interface glitch I mentioned earlier.



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