From Valve Developer Community
Revision as of 23:37, 13 August 2019 by ThunderKeil (added VTF PS blend compatibility, syntax sample, unstubbed)
Note:Not compatible with blended displacement materials.
Note:A similar effect can be achieved by enabling Point Sampling in a material's VTF file. ( Which does work with blended materials, use this instead! )
Bug: This parameter may not work on older hardware.
VMT syntax example