Weird reflections issue

MadMinstrel

Hi. As soon as I added an environment map to my scene, these strange reflections appeared:

There is nothing in the hdri that looks like these weird fireflies/ripples/spots. The material is 100% rough and nonmetallic. The only thing that seems to affect the reflection in any way is the 'radiance size' in the environment settings. Screen space reflections are also turned off. Can someone tell me what is going on?

It looks like a bug, though I'm too new to Godot to say that with any confidence.

MadMinstrel

Ok, turns out the material wasn't actually assigned to the model. I fixed that and now it responds to roughness controls.

But this still doesn't explain why there's something like water ripples on there when it's supposed to be a reflection of the sky/sun.

MadMinstrel

So I opened up the official Material Tester example, and if you look at the plastic or wood materials, you can clearly see the same horrible firefly pattern:

I'm on Windows 10, nvidia 1080Ti, and on Godot 3.1.1 stable, so by all accounts this should be well tested.

Should I report a bug?

TwistedTwigleg

I don't think I've personally had this issue on materials, but I haven't really looked either.

I would double check to see if an issue on the matter has been opened already or not, but if not then I suppose it couldn't hurt to open a new issue and see if it is a bug. You probably want to provide a test project if possible.

Megalomaniak

I can't seem to find it right now, but I'm pretty sure I've seen this reported to the tracker before..

TwistedTwigleg

Maybe related to this issue with specular lighting? I am not sure it applies, but it was the closest I could find with a few quick searches on the repository.

@MadMinstrel, can you test the scene with a nightly build of Godot 3.2 to see if the problem has been fixed in between Godot 3.1 and the development Godot 3.2?

Megalomaniak

Basically yeah, report it if you can't find a duplicate issue already on the tracker. But yeah, test 3.2 nightly first.

MadMinstrel

I would be happy to test with a nightly build, but - pardon my noobishness - I can't seem to find where I can download the official nightlies. Could you point me at them? Or do you mean that I should just build it myself?

TwistedTwigleg

On the forums we have a post listing where you can find the latest/nightly builds.

MadMinstrel

Thanks.

Yup, it appears it's fixed in the nightly. :3

Megalomaniak

That's great, cheers. :)