AdvancedAny other field the struct declares
OptionalalphaCutoff for alphaMode: 'mask'; absent when the struct doesn't declare it
The feed's tint in linear light, opacity in the last lane; set it with the material's baseColor and alpha
OptionaldisplayBase colour in display space, alpha in the last lane, for unlit bits; absent when not declared
OptionaluvThe UV transform's offset; absent when the struct doesn't declare it
OptionaluvThe UV transform's 2x2 part, row-major as [m00, m01, m10, m11]; absent when the struct doesn't declare it
The fields of PortalMaterial#data