[tom]

Josephus, if you can send me the scene I'd like to hunt for the problem.

[hyltom]

Tom, you don't think it will be more useful to hunt the problem inside maxwell core and not in each scene that got some black dot. Because if it's what you want I can provide you all my scene. And if I remember well, in the bug reports section, the problem that also appear in Thomas scene hasn't been solve yet. No need complex scene to see that maxwell rendering core have some problem.

[Josephus Holt]

Thank you all for your participation in this thread....I just got up and see that the dots are still here...so the AGS glass is definitely NOT the problem.
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JD...not a silly question at all. I'm just somewhat familiar with C4D for setting up scenes and materials. I'm totally new to Rhino and would actually prefer to make life simpler and go from Rhino to render. I've just been so swamped with work (which is a very good thing), and just the beginning of this year brought Rhino into my workflow...still learning the modeling (Rhino is great BTW for modeling), so when I needed these renders I went the "familiar" route with C4D. Would like to explore Rhino to render...will have to see if there's a little break in the work.

Arch3990: as you can see I've overclocked a tad...from 2.66 to 3.8Ghz I'm a bit over my head with this hardware/bios stuff, but I do remember setting the memory settings very carefully to match what's installed. I will keep this in mind if we can't find the problem in the geometry/emitters.

Kami: yes...definitely interesting...although my client is waiting I've tried obj and much prefer dxf (unexpected for me that is the best transfer) due to how the objects/layers come in....very clean transfer. As mentioned above, if I can't find it in the geometry/emiiters, I'll have to check this out too. I'll split up those larger long emitters as you suggest. By the way, I don't think dxf transfer is the problem, as I did not have this earlier before adding more emitters/geometry to the scene.

Matthias: Thank you much for this...will try that this morning.

Will let you know what, if anything, I find. Some have offered to look at the file....will take you up on that if I fail to find it.[/url]

[tom]

Tom, you don't think it will be more useful to hunt the problem inside maxwell core and not in each scene that got some black dot. Because if it's what you want I can provide you all my scene. And if I remember well, in the bug reports section, the problem that also appear in Thomas scene hasn't been solve yet. No need complex scene to see that maxwell rendering core have some problem.

I understand how stupid it sounds but that's not the way it works. Without a scene failing, it's not possible to know why how it ends up with black dots. It's like you build a random number generator and the rest of the application crashes after hitting the number 2873464 but you can't expect to find that crash without that number is being generated first and you can't wait until finding this number hunting forever. This means, the example user scene here is a lottery result and it can help us tracing the problem back. Also, keep in mind that the problems causing these kind of troubles usually have different sources and fixing one thing cannot always cure all. Btw, where's the Thomas scene you've pointed?

[Bubbaloo]

Black buckets in mental ray are caused by lack of memory. Don't know if it's is the same with Maxwell.

[tom]

The color of pixel is a result of a long journey. It's not easy/accurate to say something without debugging the scene.

[yolk]

[Bubbaloo]

Now that definitely needs "debugging"...

[Josephus Holt]

...you just don't know how my client's wife HATES flies!!!! They keep reminding me...remember to put screens on those doors!!!

[hyltom]

Btw, where's the Thomas scene you've pointed?

It's this thread (the last two post from you and me) Tom, but all the pictures are not hosted anymore.

[Josephus Holt]

making some progress...the hunt is on So far it looks like all the emitters are innocent...actually the only that seemed to cause the problem were three simple triangles over the range....I'm thinking they are shining the light ON the problem. It looks like the the source of the problem is in the area of the range to the far right....so far I've found that the hood above the range had coplanar faces, so fixing that reduced the number of black dots, so there is still another problem, which may be the range which was imported from the manufacturer's site....I'll have a closer look at that today. If I don't find it today I'll take up some of you who have offered to look at the scene...although not sure of best way to do that, the Cinema4D file is small enough to email, but the MXI file is huge.

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[Josephus Holt]

no black dots of death, however I'm still no wiser as to WHY. By trial and error I found that by turning off three basic triangle-emitters (same ones as in the recessed cans) that the dots went away. I also found that there was some geometry with coplanar faces which when deleted from the scene reduced the dots somewhat (last post).

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[yolk]

...and now angry ticks fire out of my nipples

[choo-chee]

it's a bug with old materials that use SSS. Remove all SSS materials (just switch the SSS with BSDF) and there's no more black dots.

[Josephus Holt]

choo-chee...there is not one SSS material in this scene...it's just a couple of materials with single BSDF grey material color, emitters, and the background images.