"Someone asked about the Source option in the Paint Brush Load control panel. The were referring to MSG brush load, but the image processing and lighting effect brush loads also have source options.
The Source refers to what is used as input…"
"As far as the paint preset you are trying to use this in.
So, the paint preset is using a msg preset for the msg brush load that is generative only. By that i means it’s io chain is setup so that no input to the msg preset is used in it.…"
"Source is an option in all of the Brush Load control panel types. It refers to what signal is used as the source into the associated brush load control panel processing. So for the msg brush load type, it's what source is used for input into…"