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Messages - Dippndots

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286
[Max] I need help! / Re: Corona IES light noise
« on: 2015-08-11, 15:46:46 »
Ok that makes sense re. the evironment map Ondra. The photometrics in my case were much slower.

Sorry Maru, what I was trying to say is that I had come across some examples on the forums where disk versions of IES light were throwing out significantly more noise compared to the sphere option. From the tests I did the disc had more noise than the sphere but not enough that I felt sphere's were a solution to the problem.

I guess its just finding a balance, mixing corona light and photometrics seem like a bad idea as photometrics in my case moved a lot of noise to the indirect pass, where as indirect noise cleans up very quickly for me with corona lights, so its hard to tweak the settings one way or the other.

I'll keep tweaking/testing and post a final result later.


287
[Max] I need help! / Corona IES light noise
« on: 2015-08-11, 13:58:48 »
Not really sure if this is should go in bug reporting, but I've noticed a couple weird things occurring when using IES profiles within a corona light.

First, a sealed box with single corona IES light generates lots of direct light noise when an HDRI is added to the corona environment light slot. How is this possible, surely it shouldn't be going through walls? The first attached pic below is 10 passes, no hdri on the left half.

Secondly, in a different scene, multiple Photometric IES lights generate very little direct light noise, but multiple Corona IES lights create lots of it, to the point where 200+ passes doesn't clean up the noise. The first 2 pics are Photometric and Corona at 32GIvAA with 2LSM the 3rd is Corona at 16GIvAA/6LSM (suited to clean up the extra direct noise being thrown out).

Sphere vs disk on the corona IES didnt make enough of a difference in my opinion. The photometric is just a point, soft shadows option is off.

What is going on here? Anyone run into this before?

288
We weren't able to narrow it down to a specific material. But any of the objects using an xref material were fine.

We've also discovered that the broken file render eventually and can get "stuck" at different points, on some computers it is at transforming vertices, at others it is building acc., etc.

I'm uploading the scene to the helpdesk now. It is able to render, but it takes an age to get to the pass stage. And maneuvering in the view port is nearly impossible because it is so laggy. Also compared to vray the file takes noticeably longer to open.

289
Well, it does work without 2 of the xrefs model files, but those files don't render when merged in/opened on their own.

I think we've narrowed it down to a material that corrupts when converted to corona because the original vray scene renders with a simple corona material set to override.

Hopefully we can find the material that is the cause and i'll post here and corona material converter thread.

290
One thing we noticed after coming back from lunch and some more testing is that it appears to be a couple of the xref model files that are quite large. The only types of geometry that they have in common are proxies converted from vray... But there are other less large files with proxies that are ok.

We'll try and narrow the problem down a bit more and try to strip the file down and send to you guys.

Also if we leave it "transforming vertices" it will eventually move on to parsing the scene, and correct saying its rendering frame 0. However it seems stuck there now.

291
there's no displacement and its un-ticked in common.

2015/2016 had the same problem. I just installed the 1.2 trial and it is doing the same thing. Is there a corona log somewhere I can look at? It would be really great to find a solution as we are seriously looking into deploying corona here

292
Not running DR server on anything else. I haven't tried 1.2, I'm still on the 1.1 trial. I'm just seeing if max 2015/2016 has the same problem. I'll try 1.2 next.

edit: Just wanted to add that it doesn't happen with corona scenes built from scratch it's only happening with a fairly dense scene that i converted from vray 2.5...

293
Did you find a solution to this?

I am having a similar issue. My workstation can handle the file and render locally just fine, and it works on the render slave when DR'd, but if I open the file on any other workstation in the office this happens when I try to render, and Max is incredibly sluggish.

294
[Max] I need help! / Re: Noisy CShading_shadows pass
« on: 2015-05-27, 13:32:45 »
Ah ok, that makes sense. Thanks for the reply

295
[Max] I need help! / Re: Noisy CShading_shadows pass
« on: 2015-05-26, 12:30:41 »
I also noticed that the RawComponents pass has similar noise issues. Any ideas?

296
[Max] I need help! / Noisy CShading_shadows pass
« on: 2015-05-25, 13:18:28 »
Hi, I picked up Corona this weekend, and am really liking so far.

I was playing around the the sample scene and noticed that the Shadows render element is giving me a lot of noise. Just wondering what might be the cause? Because the Beauty pass is practically noise free. Ignore the stamp at the bottom, this is actually after 200 passes.


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