I've been trying to get the 'output' of a Texture Tag in a similar way to how the Shader Effector and the Displacer Deformer does.
Using the Displacer Deformer to explain what I mean. If the "Channel" parameter is set to "Color" instead of "Custom" I now feed the "Texture Tag" field a texture tag. The Displacer now using all the information from that texture tag to do its calculations, such as the shaders, the projection, and the PSR.
The Displacer is referencing the Texture Tag to calculate a greyscale value at a given position for each polygon point. Instead of using the Displacer though, I would want to be able to use in my own points with the Texture Tag and retrieve the greyscale value of those custom locations.
I'm not really sure where to start exploring this, I was looking at some things like ChannelData and VolumeData, but that didn't seem to be what I needed. Any help to point me in the right direction would be greatly appreciated!