SurfaceGGX

SurfaceGGX is a material shader available in the following Source engine games: Day of Infamy , Insurgency . It was first introduced in Day of Infamy and back ported to Insurgency. It supports PBR.

Bug:This shader won't receive light properly from env_projectedtextures like the player's flashlight, instead making the material appear pure black. If the player is allowed to use a flashlight, the best case scenario is to only use this shader on props in lit up areas. This shader applied to weapon view models is safe from this however.  [todo tested in ?]

Supported Parameters

[[$basetexture|$basetexture]]

[[$bumpmap|$bumpmap]]

[[$color2|$color2]]

[[$detail|$detail]]

[[$envmap|$envmap]]

[[$alphatest|$alphatest]]

Metalness Parameters

$metal

$phongexponenttexture

Specular/Gloss Parameters

$pbr

$masks

Misc. Parameters

$fuzz

$fuzzmultiplier

$roughnessmultiplier

$subsurfacescattering

$disableenvmap

Configuring the masks

$phongexponenttexture

The RGB channels of $phongexponenttexture is configured as follows:

Channel	Data
Red	Glossiness (roughness inverted)
Green	Metalness inverted
Blue	Sub-surface scattering mask

$metal must be set to 1 in order to use the green channel.

Note:$fuzz and $detailnormal use the inverse of the blue channel.

$masks

The RGB and alpha channels of $masks is configured as follows:

Channel	Data
RGB	Specular tint
Alpha	Glossiness

$pbr must be enabled to make use of $masks.

See Also

• WorldGGX, similar shader used for brushes and displacements.