Please fix jaggies

[etown]

So, I've been all over the radar with rendering software for the last 5 years, but have been consistently coming back to vray lately for most of my animation work and large mass rendering projects for it's flexibility.

The major hang up for me now is those nasty jaggies where highlights are overblown. I've tried all sorts of VFB blooms and post glows, but it just never looks right. This is where I have to fall back on other rendering engines for still work.

If you guys/gals can fix this issue I'm all in.



Thanks!

[jacksc02]

If you could post a scene with your settings or show a screen shot of your settings it would help identify the issue.

[etown]

Here you are. I don't really mess with settings much anymore. It's BF + LC, default settings. Same jaggies in RT, but actually worse.

[JezUK]

To fix that make sure boxes "Sub-Pixel Mapping" and "Clamp Output" (under Color Mapping) are both checked.

[etown]

I work with .exr images, so can't clamp. Sub-pixel mapping does nothing.

[Moriah]

You can clamp at 2-3, might solve the issue and u still have some dynamic range in exr

[etown]

I'll try, but again something that should just work in my opinion and I shouldn't have to mess with settings.

[Moriah]

To be honest i don't think any renderer "just works" ( i work with several too ), and that's why it's important to have some settings to play around to solve issues like this.

[etown]

For me, this has always been a problem when compared to Maxwell and Octane. For some reason, I just don't have this issue with them.

[Moriah]

Hehe, personally i had alot of problems with Octane, fireflies and such in animation, for that i had to clamp GI

[etown]

I'm just referring to stills. I don't use Octane for animations.

It seems to be most apparent with a simple metal shader on a smooth surface and only when in focus. If that area is out of focus it looks great.

[svetlozar.draganov]

Max Ray Intensity parameter should be able to deal with such issues.
Lens effects are also a very good choose to smooth out such artifacts.

[NicoC]

Max Ray Intensity parameter should be able to deal with such issues.

Talking about Max Ray Intensity, I still don't understand the value of this setting ... what does it correspond to ? how should I know if the default value of 20 is enough or too high ? how should we know how to tweak this value ? increasing it ? decreasing it ?
Thanks.

[Zdravko.Keremidchiev]

The Max Ray Intensity will cut the actual value of the secondary rays to the one you have set in order to suppress very bright rays which might cause such issues, just like the Clamp output and Sub-pixel mapping options. The drawback of this will be that the overall brightness of the scene might be decreased.
Low Max Ray Intensity values will ease the antialiasing calculation respectively better render times but it might decrease the overall brightness. The best way to know what value to use will be to test it. Check which value manages to decrease the overbright pixels and still keeps a good overall brightness.

[NicoC]

The Max Ray Intensity will cut the actual value of the secondary rays to the one you have set in order to suppress very bright rays which might cause such issues, just like the Clamp output and Sub-pixel mapping options. The drawback of this will be that the overall brightness of the scene might be decreased.
Low Max Ray Intensity values will ease the antialiasing calculation respectively better render times but it might decrease the overall brightness. The best way to know what value to use will be to test it. Check which value manages to decrease the overbright pixels and still keeps a good overall brightness.

ok, understood - thanks for your answer. However, that doesn't about the unit of this setting ... is that a percentage ? sorry to insist, but I don't like not understanding something