$basetexture

Usage

• $basetexture specifies the VTF texture to use for the basic 'skin' or diffusemap of the material surface.
• If the basetexture.vtf has an alpha channel (ie it's 32bit rather than 24bit) this can be used as luminositymap ($selfillum).

VMT syntax and default values

"$basetexture" "path/to/vtf"
  "$basetexturetransform" "center .5 .5 scale 1 1 rotate 0 translate 0 0"
  "$selfillum" 0
    "$selfillumtint" ?

Available values

$basetexture

"$basetexture" "Path/TextureA" 

• where Path is the filepath relative to game_directory/materials folder.
• where TextureA is the filename; ie TextureA.vtf.
• Notice the .vtf file extension is not used in VMT texture references.

$basetexturetransform

"$basetexturetransform" "center <float> <float> scale <float> <float> rotate <float> translate <float> <float>"

• The default position is: "center .5 .5 scale 1 1 rotate 0 translate 0 0".
• "center" values are UV 0.1 coordinates.
• "scale" values are UV factors.
• "translate" values are UV 0.1 coordinates.
• "rotate" values are 0-360 degree UV angles.
• Note: You must include all variables.

$selfillum

"$selfillum" 1

• Uses $basetexture's alpha channel to set minumum clamps on the lighting.

$selfillumtint

"$selfillumtint" ?

• Used to adjust the color of $selfillum.

Multiple VTFs

$basetexture2

"$basetexture" "Path/TextureA" 
"$basetexture2" "Path/TextureB" 

• Used by the WorldTwoTextureBlend shader to blend materials on Displacement surfaces (terrain).
• The percentage blend of each of the two basetextures is defined by alpha painting in Hammer.

$basetexturetransform2

"$basetexture2" "Path/TextureB" 
"$basetexturetransform2" "center <float> <float> scale <float> <float> rotate <float> translate <float> <float>"

• Used with $basetexture2 by the WorldTwoTextureBlend shader to blend materials on Displacement surfaces (terrain).
• The default position is: "center .5 .5 scale 1 1 rotate 0 translate 0 0".
• "center" and "translate" are in UV 0.1 coordinates, "rotate" is in angles.
• Note: You must include all variables.

$texture2

"$basetexture" "Path/TextureA" 
"$texture2" "Path/TextureB" 

• Used for the WorldTwoTextureBlend and UnlitTwoTexture shaders.

See Also

• Tutorial Multiple Skins for a Single Model