View source for $lightmap

{{stub}}
{{This is a|s2|shader=VertexLitGeneric|name=$lightmap|game=Source 2013 MP|game1=Garry's Mod}}

It defines a lightmap to be used to light the [[MDL (Source 1)|MDL]] model's material, instead of the per-vertex lighting used by [[prop static]] or point lighting used by other models.

This parameter does not usually need to be added manually, as [[VRAD]] will generate model lightmaps automatically if {{mono|generatelightmaps}} is enabled for the [[prop static]] and {{mono|-StaticPropLighting}} is enabled in [[VRAD]]. Nonetheless, it can still be added manually, such as for using a lightmap on a [[prop dynamic]], or if a [[prop static]] has multiple materials (as [[VRAD]] can only generate lightmaps for the first material and skin).
{{tip|<ul><li>{{src13mp}} [[VRAD]] has a {{code|-dumppropmaps}} option, which will create external [[TGA]] versions of the generated static prop lightmaps which can be converted to [[VTF]] and manually defined as a {{mono|$lightmap}}.
<li>For already-compiled maps, the lightmaps are stored as [[PPL]] files. These can be converted to [[VTF]] using [https://cdn.discordapp.com/attachments/235121530609205249/797996930956656680/proptexelvtf.exe Ficool2's proptexelvtf.exe (direct download)].
</ul>}}

==VMT syntax==

 $lightmap <[[texture]]>

{{codeblock|lang=vmt|src=models/lightmapped/example.vmt|<!--
-->[[VertexLitGeneric]]<nowiki>
{
	</nowiki>[[$basetexture]]	"models/lightmapped/example_base"<nowiki>
	</nowiki>$lightmap		"models/lightmapped/example_lightmap"<nowiki>
}</nowiki> }}

== Limitations and caveats ==
{{warning model lightmaps}}

[[Category:Shader parameters|l]]