Fireflys

[Vyacheslav Volkov]

I haven't used corona a lot before, i am doing exterior rendering and i am having problems with fireflies can someone explain to me why something like this is happening?

[romullus]

Most likely it's from incorrectly setup of leaves and grass materials. Could you show settings of those aforementioned materials?

[Vyacheslav Volkov]

I think the material is okay, pretty standard one

[Vyacheslav Volkov]

What i found out is that i use hdri in reflection override and because of hdri, i have those weird fireflies, is there a way how to use hdri, without having problems with fireflies?

[PROH]

Here's an old tricks that sometimes works: put the HDRI map in an "output" map with "clamp" activated (checked).

Hope it helps

[Juraj]

Here's an old tricks that sometimes works: put the HDRI map in an "output" map with "clamp" activated (checked).

Hope it helps

At which point it isn't HDRi anymore ?

[PROH]

Well in the reflections override slot it shouldn't be a problem, or..... ?

[romullus]

I think the material is okay, pretty standard one

I'd set refraction to 0, just in case your refr colour isn't completely black and 0,5 translucency is too much for greenery - 0,2-0,25 should be better. Other than that, yes pretty normal material.

What i found out is that i use hdri in reflection override and because of hdri, i have those weird fireflies, is there a way how to use hdri, without having problems with fireflies?

Do you really need reflection override in a scene like that? Normally refl override shouldn't cause problems, but it is slightly buggy at the moment, so you'd better avoid using it if you can.

Well in the reflections override slot it shouldn't be a problem, or..... ?

It shouldn't... if you like flat unrealistic reflections that is.

[PROH]

:)

[Rhodesy]

Damn it im just trying this for having a HDRI show in a buildings windows whilst using the corona sun/sky for the lighting. Looks great apart from the fireflies. Hoping there is a fix in the core for this as it looks better than adding the reflections in post even if its a bit of a fake.