Difference between revisions of "$bumpmap"
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:The percentage blend of each of the two textures is defined by alpha painting in Hammer. | :The percentage blend of each of the two textures is defined by alpha painting in Hammer. | ||
:DirectX 9 required. | :DirectX 9 required. | ||
Revision as of 21:59, 12 February 2008
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The $bumpmap VMT parameter specifies the VTF texture to use for the 'bump' or normalmap of the material surface.
Basic syntax
"$bumpmap" <texture>
- <texture> is the name of the VTF texture to be used as the bumpmap/normalmap.
- The
.vtffile extension is not used in VMT texture references. - The name can be preceeded by the filepath relative to the
game_directory/materialsfolder. - Example:
"$bumpmap" "Path/Texture1_normal"
Additional parameters
$bumpscale <float (1)>- Scales the $bumpmap by the
floatvalue. - Note:Currently only used by shadertest materials. Likely an old DirectX 8 fallback shader, later replaced by the DirectX 8 version of the $bumptransform parameter.
$bumpframe <integer (0)>- Frame number to use from an animated bumpmap texture.
$bumptransform <matrix (center .5 .5 scale 1 1 rotate 0 translate 0 0)>- Transforms the bumpmap texture.
$bumpmap2 <texture>- Used by the WorldVertexTransition 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.
- DirectX 9 required.
$bumpframe2 <integer (0)>- Frame number for $bumpmap2.
- DirectX 9 required.
$nodiffusebumplighting <boolean (0)>- If set to 1, no diffuse bump lighting will be done.
- See Dealing with fillrate issues.
- Requires LightmappedGeneric shading.
$forcebump <boolean (0)>- If set to 1, always does bumpmapping (even if the graphics card doesn't say it can handle it).
- Requires DirectX 8.
