$decaltexture

$decaltexture is a material shader parameter available in Counter-Strike: Global Offensive for VertexLitGeneric. It allows for a second UV channel to be defined for a model, allowing a decal texture to be placed on top of the base material. To use the parameter, the MDL must have been compiled from an FBX file and have a second UV channel defined.

 Bug: Using VBSP's -StaticPropCombine parameter appears to break this effect on autocombined models in some cases.

Here, each label on the crates is laid out on a separate UV channel to that of the main texture – this allows easy and efficient reuse of the same labels/decals on many different props without losing texture resolution.

Parameters and Effects

$decaltexture <texture>

The decal texture.

$decalblendmode <integer>

Set the decal's blend mode. Mode 0 is alpha masked, mode 1 is multiplied, mode 2 is multiplied x2, 3 is additive.

 Note: If set to 1, $phong will not function on the material.

$modeldecalignorez <boolean>

If enabled, model decals will ignore depth.