Arcade-Maniac/Source/Library/PackageCache/com.unity.render-pipelines.high-definition@11.0.0/Documentation~/snippets/shader-properties/autodesk-interactive/use-opacity-map-masked.md

**UseOpacityMap** Toggles whether the material uses the alpha channel of the **ColorMap** texture or the red channel of the **MaskMap** texture to set the opacity of its surface. Enable this checkbox to use the alpha channel of the **ColorMap** texture, disable this checkbox to use the red channel of the **MaskMap** texture.