• Where to find it:

• NodeGraph / Right Mouse Click / Add Nodes / Math / Extension Pack / L /

log returns the natural logarithm of x, i.e. the value y which satisfies  x=e^y

https://www.khronos.org/registry/OpenGL-Refpages/gl4/html/log.xhtml

• X

Specify the value of which to take the natural logarithm.

• Output RGB

Separate computation for Input Channels Red, Green, Blue with an Alpha Channel of 1.0

• R

Computation for Input Red channel only, saved into R, G and B channel with an Alpha of 1.0

• G

Computation for Input Green channel only, saved into R, G and B channel with an Alpha of 1.0

• B

Computation for Input Blue channel only, saved into R, G and B channel with an Alpha of 1.0

• A

Computation for Input Alpha channel only, saved into R, G and B channel with an Alpha of 1.0