Xwad

A copy of this command-line tool can be found in the bin folder of the sourcesdk. This tool can convert WAD, BMP, and SPR files to TGA, VTF, and accompanied VMT files.

Help from xwad run without any parameters:

	[-AutoDir]
		Automatically detects -basedir and -wadfile or -bmpfile based
		on the last parameter (it must be a WAD file or a BMP file.
	[-decal]
		Creates VMTs for decals and creates VMTs for model decals.
	[-onlytex <tex name>]
	[-shader <shader name>]
		Specify the shader to use in the VMT file (default
		is LightmappedGeneric.
	[-vtex]
		If -vtex is specified, then it calls vtex on each newly-created
		.TGA file.
	[-vmtparam <ParamName> <ParamValue>]
		if -vtex was specified, passes the parameters to that process.
		Used to add parameters to the generated .vmt file
	-BaseDir <basedir>
	-game <basedir>
		Specifies where the root mod directory is.
	-WadFile <wildcard>
		-wadfile will make (power-of-2) TGAs, VTFs, and VMTs for each
		texture in the WAD. It will also place them under a directory
		with the name of the WAD. In addition, it will create
		.resizeinfo files in the materials directory if it has to
		resize the texture. Then Hammer's File->WAD To Material
		command will use them to rescale texture coordinates.
	-bmpfile <wildcard>
		-bmpfile acts like -WadFile but for BMP files, and it'll place
		them in the root materials directory.
	-sprfile <wildcard>
		Acts like -bmpfile, but ports a sprite.
	-Transparent (BMP files only)
		If this is set, then it will treat palette index 255 as a
		transparent pixel.
	-SubDir <subdirectory>
		-SubDir tells it what directory under materials to place the
		final art. If using a WAD file, then it will automatically
		use the WAD filename if no -SubDir is specified.
	-Quiet
		Don't print out anything or wait for a keypress on exit.

ex: xwad.exe -vtex -BaseDir c:\hl2\dod -WadFile c:\hl1\dod\*.wad
ex: xwad.exe -vtex -BaseDir c:\hl2\dod -bmpfile test.bmp -SubDir models\props
ex: xwad.exe -vtex -vmtparam $ignorez 1 -BaseDir c:\hl2\dod -sprfile test.spr -SubDir sprites\props