Hi,
I got these strange errors in my renders for this scene.
Terragen does not report anything. Anyone else had this issue?
- Terje
are you path tracing? I got something similar but mine were black squares.
Quote from: digitalguru on March 12, 2019, 08:15:47 PM
are you path tracing? I got something similar but mine were black squares.
Yes. I am.
Got the squares in another scene.
- Terje
Gorgeous looking render, that is almost certainly path traced. :D These artifacts look similar to what you get with "negative lobes" (negative values) on certain antialiasing filters, especially when AA bloom is disabled. But we can't know for sure without seeing the scene, at least the render settings. Anything notably different from your usual in the render settings?
- Oshyan
Nothing different from what I usually do.
It worked fine on all the other test renders. I just did a bigger crop and when I got back to check it, this is how it looked like.
I can send the tgd. if you need it?
- Terje
Yes, that would be great. support AT planetside.co.uk
Ideally it would include the terrain, at the least, if not the objects. Since that's where the errors seem to be occurring (along terrain edge, to some degree).
- Oshyan
QuoteThese artifacts look similar to what you get with "negative lobes"
That's interesting, I think the Mitchell filter might have negative lobes, don't think the box filter does, not sure about the others.
I did try a quick path trace render of the scene I'm working on and my black squares ( I guess they are NaNs) disappeared when I turned off Anti-aliasing bloom.
Yes, they are NaNs. Interesting they went away when you disabled bloom... Still would be good to see a scene.
- Oshyan
Quote from: digitalguru on March 12, 2019, 10:13:15 PM
QuoteThese artifacts look similar to what you get with "negative lobes"
That's interesting, I think the Mitchell filter might have negative lobes, don't think the box filter does, not sure about the others.
I did try a quick path trace render of the scene I'm working on and my black squares ( I guess they are NaNs) disappeared when I turned off Anti-aliasing bloom.
I tried this myself and it didn't work for me :'(
Anyway.... I've sent the gathered project to support.
- Terje
"Ray trace everything" worked, but I'm not sure if PT does anything when RTE is on ???
- Terje
I have noticed similar odd effects when there is a default node with a specular wrong specular settings.
I can't remember the "wrong" settings at the moment but do take a look and see if anything looks out of place.
NaN=https://en.wikipedia.org/wiki/NaN ?
Thanks, we've received it and will check it out.
- Oshyan
Quote from: Oshyan on March 13, 2019, 03:15:19 PM
Thanks, we've received it and will check it out.
- Oshyan
Great, but what actually happens when I turn on Ray trace everything when I also are using PT?
- Terje
I believe PT should work when Ray Trace Everything is enabled, yes. The difference should be fairly obvious in vegetation in shadows to judge for yourself though.
- Oshyan
I know how PT works. It's amazing! :-*
I almost always use it now and the difference in this scene is actually night and day, but I'm not entirely sure what RTE does and how these two work together. Are the any benefits or something I should know about? Or is it what you just said? "obvious in vegetation in shadows"
- Terje
The shadow differences would be due to PT, not RTE. I mentioned them because if PT was *not* working with RTE on you would notice it looking less good in the shadow areas. There is generally no advantage to using RTE, it is almost always slower. It exists primarily for troubleshooting and a few rare cases where it happens to actually work better. But again that's rare.
- Oshyan
The issue is in the Grass surface layer, specifically the Better Colour/Shade Continuity on the Effects tab. We'll investigate what's causing it and hopefully find a fix, in the meantime if you disable that it should avoid the errors.
- Oshyan
Awesome! Thanks :)
Forgot I tried this ::)
- Terje