PBR SmartBrightness v2.0c for the Substance Suite

Designed to work seamlessly with authored PBR materials/textures, now you can adjust brightness in various ways without worrying about mangling the PBR range or clipping the values. The functions are intertwined so they affect each other in a fast and smart way.

It supports Lift, Gamma, Gain, Grey Offset, and Sigmoidal Contrast.

* Expect some elastic overshoots on extreme combinations.

*The texture needs a luminance range delta of 0.4 in order to work

v2.0c

- Reworked logic for Lift, Gamma, Gain

v2.0b

- Fixed wrong node output

- Further clamps for safe adjustments

v2.0

- Major refactor. Should expect improved behaviour

v1.0

- Initial Release

>> Web: artstation.com/Dogway

>> Github: github.com/Dogway

Copyright (c) 2023 Jose Linares