Nuke-like grade display filter. Allows simple grading of the beauty pass. @parameters
blackPoint: Ci is remapped so that this color becomes 0.
whitePoint: Ci is remapped so that this color becomes 1.
lift: Add this value to Ci.
gain: Multiply Ci by this color.
multiply: Multiply Ci by this color.
gamma: Gamma Ci by this color.
offset: Offset Ci (Ci + offset) by this color.
clampWhite: Clamp Ci so that no value exceeds 1.
clampBlack: Clamp Ci so that no value is less than 0. This is useful for compositing so that adding channels will not result in unexpected results.
mask: Mask the color correction result with this color.
aov: Name of AOV to apply filter to.