Xwad

Note:Most first-party games don't have a copy of this tool; the version of the tool found in the old "SourceSDK" depot can still be used for any branch (all 4 included versions of xwad.exe are the same).

A copy of this command-line tool can be found in following folder: common\SourceSDK\bin\<branchname>\bin\xwad.exe. This tool can convert WAD, BMP, and SPR files to TGA and accompanied VMT files, as well as call vtex to generate associated VTF files.

After running XWAD and converting the textures to VTF, use the Convert WAD to VMT... button in Hammer 4.x's File menu (not in ) to automatically add material paths and fix the scaling of previously non-power-of-two textures.

Todo: The 28 June 2024 update to Jabroni Brawl: Episode 3 includes a build of xwad with several bugfixes and extra features; document these properly. They include:

• Increases max resolution cap to allow textures up to 8192x8192.
• Add support for WAD2 format (using -palfile param to provide palette, defaulting to Quake 1 palette).
• Fix processing of decals
• Extract sprite groups from SPR files
• Include approximate values for water fog in generated VMTs

Caveats

Bug:Xwad always outputs pixels that used index 255 as transparent, even if they aren't flagged as such^[Elaborate?]. Only textures that are flagged as transparent will have the transparent pixels modified to work better with texture filtering.

Workaround:Convert the output folder(s) to BGRA8888 using VTFEdit, then use VIDE's batch VTF converter to convert the textures that should be opaque to BGR565, BGR888, or DXT1.

  [todo tested in ?]

Important:Valve's Xwad does not support textures with more than 262144 pixels (ex: 512x512 resolution).
This is increased to 8192x8192 in 's Xwad.

Syntax

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Options

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Required

-basedir <path>

Location of gameinfo.txt.

If xwad is called from the materialsrc directory, then .. will suffice.

-wadfile <file>.wad

-bmpfile <file>.bmp

-sprfile <file>.spr

Convert a WAD, BMP, or SPR, respectively. Accepts preceding file paths and wildcards.

Optional

-transparent

Flag input BMP files as having alphatest transparency. For WAD files, this happens automatically for {-prefixed textures, and for SPR file, this happens automatically if the sprite has its transparency mode set to alphatest.

A texture flagged as transparent will have texels using palette index 255 (the last color) dilated based upon surrounding opaque texels, and $alphatest 1 and $alphatestreference 0.5 added to the VMT.

Palette index 255 is always transparent in the output TGA, but the underlying texels' colors are kept unless the texture is flagged as transparent.

-decal

Works differently in Valve's Xwad vs Jabroni Brawl's:

• Do not use. Creates VMTs using DecalModulate shader and $alphatest parameter.

As this is not faithful to how GoldSrc decals work, WadMaker should be used to convert decals instead (if necessary, using an image editor to pad all edges to the next power of two), and the VMTs created manually as LightmappedGeneric with $translucent 1, $decal 1, and $decalscale 1.

• Treats the input texture as an IndexAlpha texture, with the palette index being used for full 8-bit translucency, and the last index being used to determine color. Creates VMTs using $translucent 1, $decal 1, and $decalscale 1.

Implied when converting { textures if the input WAD is named decals.wad.

Confirm:Is this implied if converting IndexAlpha SPRs?

Warning:Due to how Xwad's Po2 resizing method works, non-power-of-two decals will be slightly larger when using infodecal in Source vs how it appeared in GoldSrc. If this is a noticeable issue, use WadMaker to convert the decals from their original format, then use an image editor to pad all edges to the next power of two.

Tip:For decals and IndexAlpha sprites, consider using A8 texture format and defining color in the VMT using $color, as this retains the full original quality while being the same size as a DXT5 texture of the same resolution.

-vmtparam <parameter> <value>

Add the described material parameter to the VMTs of all converted textures.

To add multiple parameters, use multiple -vmtparam arguments.

Despite what the readme says, this has nothing to do with VTEX.

-onlytex <texture>

Only export the specified texture name.

-palfile <file>.lmp (only in )

What palette to use for WAD2 files (uses the vanilla Quake palette by default).

Expects a 768-byte array of 24-bit RGB values ("pallete.lmp"); can be extracted from several formats using Fimg. Can also be taken from a 8-bit paletted PCX file by deleting all but the last 768 bytes in a hex editor.

Tip:For Quake I textures, it is possible to generate accurate $selfillummask textures based upon fullbrights by using palette with the last 32 indices set as white, and the rest of the indices set as black. A preconfigured palette for this purpose can be found here (direct download).
This should not be done for Hexen II textures, as Hexen II does not use fullbrights.

Readme

Help from xwad run without any parameters (some information is inaccurate and/or misleading):

[-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