$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.

$bumpmapframe

"$bumpmapframe" ?

• ?

$bumptransform

"$bumptransform" ?

• ?

$bumpmap2

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

• dx9
• Used by the WorldTwoTextureBlend shader to blend materials on Displacement surfaces (eg terrain).
• The percentage blend of each of the two textures is defined by alpha painting in Hammer.

$bumpmapframe2

"$bumpmapframe2" ?

• dx9
• See $bumpmap2
• ?

$nodiffusebumplighting

"$nodiffusebumplighting" ?

• dx9
• See Controlling Geometry Visibility and Compile Times#Dealing with fillrate issues

See Also

• Tutorial Normal Map Creation in The GIMP