white weired noise

[mitviz]

what normally causes this type of noise?

[mitviz]

i followed instruction on how to deal with noise, and i think i am there on all of them, now i increased light samples and gi but i notice while its rendering the white sample are multiplying and when i add the cessential_direct and indirect element i see it is only in the direct element. can anyone say whats going on?

[3di]

use a rayswitcher map on the reflective materials reflection colour slot and set the global illumination colour of the rayswitcher to black (or a less bright colour)

[mitviz]

just on the materials with the problems?

[mitviz]

i tried it on the trouble materials and no change

[3di]

stick it on all reflective materials.  Particularly those very close to light sources.  You can also try turning down max sample intensity until it goes away (if its on the GI pass).

[mitviz]

its a few materials that is reflective, well most but it would be crazy to have to do this for all materials, is this some kind of bug? all other noise looks normal except this one

[3di]

I'm not sure if it's a bug......I don't see any change in my renders if I disable the reflective colour's GI rays though (apart from an immediate eradication of bright white dots)....although i'm still just learning it myself.

I've put forward a feature request to be able to globally disable reflective caustics whilst still maintaining GI bounce intensity:

https://forum.corona-renderer.com/index.php/topic,10149.0.html

Maybe someone is already aware of a way to do this without manually changing all materials (without lowering msi)?  If so I'd love to know, as i've just had to go through over 1000 materials to do it one by one! :(

[mitviz]

nothing works, i tried all suggestions so far and all i ave is two material near the light , scene is fresh and very few materials, this is just crazy

[mitviz]

i notice it doesnt happen in areas where the camera is in light? when its in a darker area then it happens, its crazy

[3di]

how are you lighting the scene? 

If you have any self illumination, then use a rayswitcher map on the direct illumination slot and set the rayswitchers global illumination slot to black.

I feel your pain though, i'm working on a scene with over 230 light groups and more than a thousand materials......i'm getting the fireflies even after going through all the materials one by one and setting the reflction colours global illumination to black with the rayswitcher map....i'm guessing I must have missed a material somewhere :S

[mitviz]

actually non is self illuminating, i am using just a hdri to light the scene and a few interior sphere light placed inside the pendant light but not touching and geometry or so. i love corona but something like this has to be labelled as a bug or something to fix, makes so sense a user has to  amount to tricks and adding a separate map into matrerials to fix the issue and its not realistic either setting a materials gi to black, in real life a red floor for example will color a room,just how much is something is nice to be able to control in renders but to do this for each material is overkill

[mitviz]

as you can see its not in some cameras but present in some, in the camera nothing
[img=http://s8.postimg.org/jkesi8b7l/test.jpg]http://

[mitviz]

and all of a sudden when i converted one material that was a vray material from 888 fresnel to 50 i dont see the issue so much, hmmm, idk, the converter is not converting the vray materials properly

[maru]

Hey, can you enable dev/experimental settings rollout and show me a screenshot of it? Here is howto:
https://coronarenderer.freshdesk.com/support/solutions/articles/5000523916