Flickering problem in foliage (Vray Render)

[navdeep2502]

Hi Friends,

 

I am using the vray proxies of the onyx trees in my animation.

With the below mentioned settings i m recieving flickering in the foliage.

 

Irradiance map :

 

Meduim Animation

Hsph Subdiv : 60

Interp Samples : 40

 

Quasi Monte Carlo

 

Sub Div 8 Secondary Bounce 3

 

Adaptive subdivision : Mitchell-Netravali

 

Adaptive Subdivsion image sampler

 

Min Rate : 0 Max Rate : 4

 

If i go beyond these setting then the rendering time shoots up to double and

my system crashes ......

 

Please Help

[Ricardo Eloy]

Well, I wouldn't use QMC here. Try using Lightcache, instead, with World Scale on. That should avoid this flickering and save you some render time.

[Dave Oliver]

im not sure how to do this exactly but, i think this is true

 

all light coming to the plant should be considered GI light if you store your lights with irradiance map.

 

the flickering is caused by inaccurate calcs for this GI light

 

if you exclude the plants from receiving GI light, and light them uniformly some other way, it bypasses the need to do the calculations for them.

 

it would be a less 'ideal' setup, but it might work

[classix]

Use the "high animation" preset to avoid flickering and lower your subdivision image sampling to speed up the scene. Convert your onyx trees to vray proxies to avoid crashes.

 

www.einherzfuerpixel.de

[fareen]

i would say you should try using the area filter over Mitchell-Netravali

 

and also maybe if u remove the generate gi option in the vvray properties for the trees it could help render time and flickering

[BrianKitts]

i would say you should try using the area filter over Mitchell-Netravali

 

Absolutely on the mark there, you'll beat your head in trying to render an animation using a sharpening filter like mitchell-netravali..... unless your rendering oversized images and downsizing in post for the animation.

 

I've always found the video AA filter to be a bit too much of a blur for my taste but an area AA filter of 1.3 normally works pretty well. And then in after effects or premiere I will add a sharpening filter sometimes in post, works much better.