The ORM texture is a packed-channel map, with ambient occlusion in Red, roughness in Green, and metallic in Blue channel. PiperOrigin-RevId: 772367369 Change-Id: I88a4dee2477daa1e3c0b00197bfbe2b276ba9937
PiperOrigin-RevId: 771992722 Change-Id: Ifeae9e12f1071018112e697402361caa84095ff2
PiperOrigin-RevId: 740730698 Change-Id: If9c68798cda502d6d7632906a034437e2557802e