$bumpmap

The $bumpmap VMT parameter specifies the VTF texture to use for the 'bump' or normalmap of the material surface.

Basic VMT Syntax

"$bumpmap" "Path/NormalmapA" 

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

Additional Parameters

$bumpscale

"$bumpscale" float

• Scales the $bumpmap by the float value. Default value is of course 1.

$bumpmap2

"$bumpmap" "Path/NormalMapA" 
"$bumpmap2" "Path/NormalMapB" 

• Used for the WorldVertexTransition shader.

See Also

• Tutorial Normal Map Creation in The GIMP