AA low quality - How to increase it?

[boumay]

Hello,
I've made an animation and I have AA issues ont the edges of the character (clothes). It's flickering (waving). I mean that the AA isn't good. The fact is that I have a special style for the character which is that the character is completely black with a shap falloff white color (type fresnel).
I had several issue in the past with AA. sometimes it's fine and some other it behaves weirdly.
I'm rendering in progressive (PT-PT).
Any ways to increase AA quality in this case?
Thank you.

[Ludvik Koutny]

How about posting a picture ;)

[boumay]

Yes of course,
Btw, after reading the post "Path tracing samples VS passes", I understood that it is the number of passes that increase the AA quality (if i'm right), so I guess I'll to render the character alone so I can have high number of passes render fast. But the problem is that, how to get the same illumination and shadows etc with everything hidden as I didn't get the workflow for rendering objects separately while keeping the lighting/shadows consistent in corona. Perhaps make them all black or a fake matte of some kind, I'm a newbie in render passes.

[Ludvik Koutny]

You can simply lower PT samples (GI sampled multiplier in daily builds) to get more AA samples. So try values between 2 to 4. Some jagged lines will never go away if they got too big value (lot over 1) So you can either decrease intensity of that falloff effect, if what i suggested about PT samples does not work, or you can increase highlight compression ;)

[boumay]

Thank you for these useful tips, I didn't know about the fact that reducing pt samples could improve aa.

[maru]

after reading the post "Path tracing samples VS passes", I understood that it is the number of passes that increase the AA quality

I didn't know about the fact that reducing pt samples could improve aa.

You should have known this if you really read that thread. :)

But yeah, this is something illuminating at the beginning of adventures with Corona. This is something every new user should know and it should be written with huge letters once the documentation is made.

[Ludvik Koutny]

But yeah, this is something illuminating at the beginning of adventures with Corona. This is something every new user should know and it should be written with huge letters once the documentation is made.

I got even better idea how to solve it. I just need to convince Keymaster to do it :)