Element AA problem

[fAEkE]

So, I have had this problem for a long time but I've never asked about it, or read about it anywhere. Sometimes wirecolor and zdepth wont get decent AA.

Usually this problem occurs when you need to render an element fast and turn of all the lights in the scene. But sometimes it occurs even when you have lights in the scenen and good render settings.

Anyone knows something about this?

[joconnell]

Yep. What happens is that the render elements are made from the main render, so they get made with whatever sampling vray applied. The problem is that elements that are dark or doon't make much difference in the final render (think of very weak specular or reflections) will get cut off early by vray's dmc sampler so you'll get slightly worse results on those. For quick renders as you say you might be better off using fixed aa set on 2 or 3 if it's only matte stuff with all the lights turned off.

[Morbid Angel]

joconnell is right. What we typically do is give min of 3 samples for any rendering. Also what you may consider is if you want to render a separate render pass with just the utility elements you can assign a vray light material to material override and put a falloff map with fresnel on, this will make everything more or less bright in the scene with surface curvature and perform better sampling at no extra render cost.

[fAEkE]

Thanks for the tip, I'll try that out tomorrow