$bumpmap

From Valve Developer Community

The $bumpmap VMT parameter 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 normal mapping.

Table of contents

1 Basic syntax 2 Additional parameters 3 Console commands 4 Known Problems 5 See also

Basic syntax

$bumpmap <texture>

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

Additional parameters

$bumptransform <matrix>

Transforms the bump map texture. Requires DirectX 9 or above.

The default position is "center .5 .5 scale 1 1 rotate 0 translate 0 0".

1. center defines the point of rotation. Only useful if rotate is being used.
2. scale fits the texture into the material the given number of times. '2 1' is a 50% scale in the X axis.
3. rotate rotates the texture anti-clockwise. Accepts any number, including negatives.
4. translate shifts the texture by the given number of heights/widths. '.5' will shift it half-way.

 Note: All values must be included!

$ssbump

Flags the bump map texture as being self-shadowing. Click for more details.

$bumpscale <float>

Scales the bump map by the given value in DirectX 8.

$bumpframe <integer>

The frame to start an animated bump map on.

$nodiffusebumplighting <bool>

Stops the bump map affecting the lighting of the material's albedo, which help combat overdraw. Does not affect the specular map.

$forcebump <bool>

Forces DirectX 8 cards to render the bump map. They normally don't for performance reasons.

$bumpoffset <?>

To do: DX8 version of center?

$bumpmap2 <texture>

$bumpframe2 <integer>

Used by the WorldVertexTransition shader in blend materials that display two textures. DirectX 9 required.

Console commands

mat_fastnobump <bool>

Quickly enables/disabled normal mapping.

mat_normalmaps <bool>

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!)

Known Problems

Some users have reported that HLMV does not display normal maps, even though the game/mod itself does.

See also

• Normal Map Creation
• Normal Map Creation in The GIMP