Waves on blinds

[gfernandes]

It´s not first time it happends and I known that if I render a bigger image it´s not going to appear anymore. I place a vray light behind the window and when it rendered it creates some strange waves on the blind. I´d like to ask you why this happends and how can I work on it ?

 

______________________________

Guilherme von der Heyde Fernandes

guilherme@heyde.com.br

www.heyde.com.br

[Crazy Homeless Guy]

.....initially i was going to suggest cranking your AA, but now i am geussing that it won't matter. to fix this, you will need to clamping your output in the vray color mapping rollout.

 

....this partially defeats the purpose of working linear space, but i think it is the only way around it. it is happening on your deiling lights also.

 

....basically, unclamped color lets the white be several times brighter than what the screen can actually display. the computer can't AA between a white that is several times brighter than white, and the surface next to it. clamping the color limits the white value to white, and no brighter. if you are working in 32 bit float, you will loose some of the dynamic because you are limiting the light information in the image.

 

anyway, i hope that made sense. also, i think you need to crank your AA anyway.

 

....although the more i think about it. if you render at a higher resolution, and sample down in photoshop, photoshop should AA it for you. maybe try rendering at high res, with no AA filter to spee things up, then downsampling in photoshop to get a nice AA.

 

which in the end, leaves you back to where you were when you started this thread.

[gfernandes]

Thank you, I´ll transform the blinds into a plane with small black stripes. It´s taking too much time to render and I hope the result will be similar. I´ll test different AA as well. Thanks.