compositor - Add color to shadow catcher - Blender Stack Exchange


whatever do, can't figure out how change color of shadows.

i using "shadow catcher" feature in v.2.79 , have object , shadow catcher on separate layers.

i tried adding additional sun blueish tint , hdri images environment maps both colored object, not shadow. also, tried use mix node shadow layer , blueish color inputs, looked weird. compositing render onto background video.

the final render looks this:

enter image description here

(also reason shadow lighter in render preview).
here composite node graph:

http://imgur.com/f4qdlpir.

hopefully can fixed, happy input :)

the shadow catcher shader designed return whole appearance of shader in alpha channel. can see when rendering shadow catching object, , switching display rgba rgb (discarding alpha channel information):

normal rgba display mode:

rgba composite

only rgb channels, entirely black:

rgb only

only alpha channel:

alpha only

now add color shadows, you'll need work on rgb components, alpha blending factor between foreground , background. can use simplified setup started:

demo setup

so i'm feeding alpha channel of shadow catcher layer set alpha node, allows me define different rgb components there. in setup, went cheap , simple solid dark blue color, color corrected background image bluish tint in there.

further examination

for further explanation , render layer setup, check out .blend file here:


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