048 Texture Coordinate Unreal Engine
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TextureCoordinate
The TextureCoordinate expression outputs UV texture coordinates in the form of a two-channel vector value allowing materials to use different UV channels, specify tiling, and otherwise operate on the UVs of a mesh.
Example Usage: To access the second UV channel of a mesh, create a TextureCoordinate node, set its CoordinateIndex to 1 (0 - first channel, 1 - second channel, etc), and connect it to the UVs input of a TextureSample node.
https://docs.unrealengine.com/5.0/en-...