Chaos Corona Forum
Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: arqrenderz on 2014-12-15, 18:20:30
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Hi here is a small bathroom scene Iluminated with 2 ies lights and a line on the celiling (cilinder line)
after 442 passes it has a lot of noise on the floor, black wall, sink counter and wc.
All settings are deafult
Materials on the scene are basic.
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Can you check it with daily build, or send me the scene, so I can? It should be MUCH better
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How is the line lighting made? Object emitter? What material?
Did you try removing/disabling some of these lights? For example, disable the line light and see if there is still noise. Disable IES lights and see if there is noise.
Also you can try adding CEssential_Direct and CEssential_Indirect render elements. If you see noise in direct - increase LSM, if you see noise in indirect - increase GI/AA balance.
For IES lights you can also try using max's default photometric lights instead of Corona lights.
Hope some of it helps. :)
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I uploaded the scene to keymaster, hope it helps.
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ok, there is visible difference - not as great as I would have hoped, but still nice. The walls clear much faster.
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Seems rather extreme, I didn't see such amount of noise since I used Maxwell :- ) Could be some light setup oddity ?
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Im doing something terrible wrong?
Or what?
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the scene is HUGE, there are 17000 lights, all of them IES, and I did only 3 minutes render
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Also, I did render it with Pt+PT
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Im doing something terrible wrong?
Or what?
the scene is HUGE, there are 17000 lights, all of them IES, and I did only 3 minutes render
Looks like so. If the scene is larger than what we see in this image, simply separate it into other scene, or just isolate.
If you need 17k lights, than you're probably choosing inneficient way of creating this light array. There is always possibility in CGI to have visually identical result, while having vastly optimized way how to achieve it.
At this point, perhaps screenshot would help.
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Ok I want to learn not to F**k my work up, So here is the screens.
As max says there is 103 lights, there is a lot of them in the hall way 1 in the floor and 1 in the roof spaced 120cm betwen each other
But Corona says LIGHT (groups ) 13.142 (153) what does this data mean?
The scene is iluminated with corona sun+sky
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Ok I want to learn not to F**k my work up, So here is the screens.
As max says there is 103 lights, there is a lot of them in the hall way 1 in the floor and 1 in the roof spaced 120cm betwen each other
But Corona says LIGHT (groups ) 13.142 (153) what does this data mean?
The scene is iluminated with corona sun+sky
Do you have CoronaLightMTL assigned on something? If so, then replace it with CoronaMTL with emission enabled and diffuse set to 0.
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if you have an object with a light material assigned, each face (triangle) counts as a light, a group is (probably) a max node
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I do have some splines with corona light material.
I thought it was the correct way to iluminate things that have that indirect light
So whats the real diference betwen light mat and Self ilumination?
(in my head self ilumination is some "fake" light and the other one is "real light")
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Hi guys im trying to understand how this works and what does it mean.
i have a simple scene with an HDRI and 1 corona light
If the light is a rectangle it says "Lights (groups) 3 (2)"
If the light is a sphere with 6 segments it says "Lights (groups) 145 (2)"
So I shoudnt care about the first number and just look at the seccond one?
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yes, now generally only the second value is interesting. In older versions, the first one was more important
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Hi i made some changes to the scene
I have a lot of spheres inside the ceiling lights to "mimic" the light bulbs with corona light mat, I changed that to corona mat with self ilumination and hide almost all the lights outside this scene and i get this result: Much much cleaner image after 140 pases, ( i just render them at lower res than before for test purpouse)
After 502 passes it almost clear but you can see some noise in the black wall, dont know if it is still my fault or is something else on corona and the ies lights .