OCIOCDLTransform node

pluginIcon

This documentation is for version 1.0 of OCIOCDLTransform (fr.inria.openfx.OCIOCDLTransform).

Description

Use OpenColorIO to apply an ASC Color Decision List (CDL) grade.

The formula applied for each channel is:

out = (in * slope + offset)^power.

The saturation is then applied to all channel using the standard rec709 saturation coefficients:

luma = 0.2126 * inR + 0.7152 * inG + 0.0722 * inB

outR = Clamp( luma + sat * (inR - luma) )

outG = Clamp( luma + sat * (inG - luma) )

outB = Clamp( luma + sat * (inB - luma) ).

The grade can be loaded from an ASC .ccc (Color Correction Collection) or .cc (Color Correction) file.

Inputs

Input

Description

Optional

Source

No

Mask

Yes

Controls

Parameter / script name

Type

Default

Function

Slope / slope

Color

r: 1 g: 1 b: 1

ASC CDL slope

Offset / offset

Color

r: 0 g: 0 b: 0

ASC CDL offset

Power / power

Color

r: 1 g: 1 b: 1

ASC CDL power

Saturation / saturation

Double

1

ASC CDL saturation

Direction / direction

Choice

Forward

Transform direction.
Forward (forward)
Inverse (inverse)

Read from file / readFromFile

Boolean

Off

Load color correction information from the .cc or .ccc file.

File / file

N/A

Specify the src ASC CDL file, on disk, to use for this transform. This can be either a .cc or .ccc file. If .ccc is specified, the cccid is required.

Reload / reload

Button

Reloads specified files

CCC Id / cccId

String

If the source file is an ASC CDL CCC (color correction collection), this specifies the id to lookup. OpenColorIO::Contexts (envvars) are obeyed.

Export / export

N/A

Export this grade as a ColorCorrection XML file (.cc), which can be loaded with the OCIOFileTransform, or using a FileTransform in an OCIO config. The file must not already exist.

Enable GPU Render / enableGPU

Boolean

Off

Enable GPU-based OpenGL render (only available when “(Un)premult” is not checked).
If the checkbox is checked but is not enabled (i.e. it cannot be unchecked), GPU render can not be enabled or disabled from the plugin and is probably part of the host options.
If the checkbox is not checked and is not enabled (i.e. it cannot be checked), GPU render is not available on this host.

(Un)premult / premult

Boolean

Off

Divide the image by the alpha channel before processing, and re-multiply it afterwards. Use if the input images are premultiplied.

Invert Mask / maskInvert

Boolean

Off

When checked, the effect is fully applied where the mask is 0.

Mix / mix

Double

1

Mix factor between the original and the transformed image.