proper MATTE object for compositing purposes Tweet

[ruuterdetuuter]

Hi,

I'm doing a scene where I need to composit video footage inbetween objects. I used to do this by placing a Matte object where I want the foreground and background to be seperated, but I just can't get it to work properly with Octane.

What I did is the following: making a box, putting on the diffuse node and make it a matte. But somehow it doesn't give me a clear matte as the matte isn't pure black or pure white.

Is there anyway to do this?

[FrankPooleFloating]

Whoa, whoa, whoa... hold on there little buckaroo! Use Render Layers!

https://docs.otoy.com/Lightwave3DH/Ligh ... Layers.htm

Do a layer for your bg (make all bg objects layer 1) and another layer for your fg objects (2). Then enable render layers in render target and enter which layer you want to render (1 for bg and 2 for fg) and render each layer separately. In other words, enter 1 in Layers to render. Render bg. Save image. Enter 2 in Layers to render. Render fg. Save image. Done.

If you are just doing bg and fg and can comp them as two PNG32, you do not need to mess with a Render Passes node or MultiLayer EXR or anything like that. Just do as I say above and F9 these two layers.

[ruuterdetuuter]

thanks, just what I was looking for, I've seen it on a Cinema4D tutorial but couldn't find it in Layout