It will be released next month.
For now, either convert your grayscale images to RGB, or use a development build of the latest code. You can grab a development build from this page:
Get the one which begins with RawTherapee_dev_*
It will be released next month.
For now, either convert your grayscale images to RGB, or use a development build of the latest code. You can grab a development build from this page:
Get the one which begins with RawTherapee_dev_*