RGB_light gizmo provides facility to Compose RGB light pass (directIrradiance) to Diffuse pass.
It may sometime happen that you render your scene with some colored background. With this kind of image there is always an issue with edge while doing pre-multiplication. Through this Gizmo you can easily deal with this kind of problem.
A switch that changes color
This is a switch that use a $gui expression to bypass process heavy nodes until render time.
Contact Sheet that Automatically resizes according to number of inputs. Inspired by Ben McEwan's blog post.
his fixes the issue when your background color is anything other then black. Just pick whatever color the guys in 3d or matte painters gave you and Walla! the funky color fringe is now gone. 1.0.2 Added an sRGB knob to do the operation in sRGB instead of linear.
Auto compositing -Connect a CG element in 'A' input -Connect a BG plate in the 'BG' input Attribute Effects 1- Haze Effect 2- Control Colors (Balance Forgraund) 3- Re-Grain 4- Transform (Forgraund) 5- Motion Blur 6- Merge Control (Balance Background ) 7- ReTime
GUI or Render - return inputs in the UI or at Render time.
Its Combination of copy and premult node