Orthographic ZDepth with Vray

[markfenollar]

Hi everybody.

 

I'm making an isometric adventure game with pre-rendered backgrounds and 3D characters. I'm struggling to find a way to render an orthographic depth pass in vray to occlude the 3D characters as they pass behind pre-rendered objects.

 

I believe this is the technique used for Pillars of Eternity by Obsidian.

 

Any help would be greatly appreciated!

 

Edit: Apologies, I meant to post this in the VRay forums

Edited August 10, 2014 by markfenollar

[DanGrover]

You could try doing a separate render with a material over-ride. This could just be a VRay Light material (adjust for exposure) with a falloff map in the diffuse. You can set the falloff map to use "Distance" in the z-axid with a near and far value and two colours (which, conveniently, default to black and white). I believe this will work with an orthographic view/camera.

[markfenollar]

That works! You're amazing, can't thank you enough. I've been trying to solve that for a while.