MultiBlend
MultiBlend
is a shader found in newer versions of Source (Alien Swarm and Dota 2). It allows for blending on displacement surfaces using up to four different materials.
As opposed to most other shaders, the MultiBlend shader seems to read VMT files instead of VTF files.


Example
MultiBlend { $basetexture nature/grass_00c $spectexture nature/grass_00a_spec $scale 1.5 $rotation 0.0 $basetexture2 nature/sand_cracked001 $spectexture2 nature/sand_cracked001_spec $scale2 3.0 $rotation2 0.0 $basetexture3 nature/sand_path001 $spectexture3 nature/sand_path001_spec $scale3 3.0 $rotation3 0.0 $basetexture4 stone/stone_path007 $spectexture4 stone/stone_path007_spec $scale4 3.0 $rotation4 55.0 %tooltexture test/terraintest-1 }