9.5.2

874 • CHAPTER 18
THE SHADERS • 875
Use Mask
Enables the Mask channel.
Invert Mask
If enabled, the Mask channel value is inverted so that black becomes white and vice-versa.
Inver Output
Enable this option to invert the result of the Blend channel, Mask channel and Base channel.
Blend Channel
You can bring in and affect any image or 2D shader. This channel is the top layer in the fusing.
Mask Channel
The texture that is used as a mask when combining the Blend channel with the Base channel.
Base Channel
The texture that is the bottom layer in the fusing. The Blend channel is combined with the Base channel
at the opacity set in Blend and modied by the Mask channel.
Layer
The Layer shader is a powerful tool for combining multiple shaders and bitmaps in the same material
channel. You can stack shaders and bitmaps into layers and folders. You can dene various blend
strengths and modes. Alpha channels are supported. You can apply effects to individual layers or all
layers. To change the order of the layers, drag and drop them to their new positions.