Way to achieve color bleed on shadow catcher

#1

I’m rendering some red text on top of a white brick wall photo. I’m using mip_matteshadow on a plane to catch final gather shadows from an hdri image. I also have a spot light shining down on the text. I turned on global illumination and set the spot light to emit photons in hopes that I would get a little red color bleed onto the shadow plane but its not working. I guess I am missing something in the planes material to catch the GI color bleed.

Here is how my shadow catcher material is setup:

  1. plane has a lambert shader on it
  2. mip_matteshadow is dropped into the Surface Material slot of the Shading Group attributes
  3. A mib_opacity is dropped into the Background slot of the mip_matteshadow and is set to black.

Anyone have any idea of how to get the color bleed?

#2

I am no render wrangler, but try searching around for rendering in mental ray with caustics and photons. They will simulate real world lighting with light bounce and photon emission.

Good luck!

#3

Moving this to the maya/rendering forum for you, next time please post questions in the appropriate forum

#4

in your matteshadow make sure you tick the box “catch indirect” and change the indirect colour to a lighter colour.