Editing Fur Thickness and Overall Shape (section)

=== Height Masks ===
Height Masks are typically used to trim the fur when clothing is being worn. All 4 channels (ie. Red, Green, Blue, and Alpha) of all 4 Height Masks are treated as additional Fur Shape Data Map fur thickness channels (ie. Blue). The shader will use the lowest (ie. shortest) value out of all the channels that are active.

For example, on my avatar, I have chosen to use Height Mask 1 for my shirts, and Height Mask 2 for my pants. I then use the Red channels for large items of clothing, Green for medium, and Blue for small. You don't need to follow my example, you are free to organize the masks however you wish.

So, to trim my fur when I am wearing large pants and a large shirt, I use an Animation to turn on the red channels of my Height Masks:
[[File:Fur Mask Example - Large Masks.png|none|thumb|645x645px|My large shirt and large pants height masks.]]

Height Mask channels are typically made by making a copy of your Fur Shape Data Map, re-grooming it to remove the fur from areas that are covered by clothing, and then copying the Blue channel from that re-groomed Fur Shape Data Map to a Height Map channel.

The shader includes a utility to do this, in the Fur Shape Data Map Utilities section of the shader GUI.