crok_uncomp (Compatible with IFFS 2015.0.0 and up)

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This Matchbox shader uncompose a compositing scene into its original layer.

Version: 1.0

Input for Undo Blend:

• Front: wrongly comped element
• Back: clean BG without the element on it
• Matte: alpha of the composed element

Input for Remove Logo:

• Front: FG element which you want to remove
• Back: original scene with the element on it
• Matte: alpha channel of the element

Modus:

• Undo Blend: remove wrongly comped element from BG needs original matte of the element
• Remove Logo: removes semitransparent FG element from BG (needs a matte of the element)

Based on this great article: http://erwanleroy.com/compositing-elements-with-a-colored-background-or-how-to-invert-almost-any-comp-operation/
Matchbox done by ivar _at_ inferno-op.com with huge help from Erwan Leroy

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Version notes

• fixed matte output
  Now you are able to use the shader directly in the timeline as a TimelineFX

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Older versions that shader

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