$bumpmap

A material's albedo (left) compared to its bump map.

The above material in-game.

Template:Shaderparam It specifies a texture that will provide three-dimensional lighting information for a material. The texture is a bump map, but the process it is used for is called normal mapping. The two terms are often used interchangeably, however.

Warning:$bumpmap will disable prop_static's per-vertex lighting in every Source game but . Not enough data is stored in the vertices for normal mapping, so the engine has no choice but to fall back.

Note:

• In the Water shader, $bumpmap is for a DX8 du/dv map. Use $normalmap instead.
• Bumpmaps cannot be used on decal textures, except in .

Basic syntax

LightmappedGeneric
{
	$basetexture	brick/brickwall021a
	$surfaceprop	brick
	$bumpmap		brick/brickwall021a_normal
}

Additional parameters

$bumptransform [[$ssbump|$ssbump]] $bumpscale $bumpframe $nodiffusebumplighting $forcebump $addbumpmaps $bumpmap2 $bumpframe2 $bumptransform2 $bumpdetailscale1

Console commands

mat_fastnobump <booleanRedirectInput/boolean>

Quickly enables/disabled normal mapping.

mat_normalmaps <booleanRedirectInput/boolean>

Displays the bump map texture of all materials that have one in place of their albedo.

(Yes, these two commands have bump and normal the wrong way around!)

mat_bumpmap <booleanRedirectInput/boolean>

Enable or disable normal mapping. Default 1.

See also

• $ssbump
• Bump map, for technical details and a guide to creation.