$phong

Phong shading provides Alyx's skin, hairband and lip highlights.

Template:Shaderparam It provides diffuse reflections, masked by a texture to control its intensity per-texel. For a full explanation, see Phong materials.

Note:Phong shading for LightmappedGeneric and WorldVertexTransition is only available in CS:GO engine branch. It requires the material to be lit by the sunlight from a env_cascade_light entity to work properly and uses the dynamic shadows generated by it as a mask on top of the traditional phong masking.

Note:Phong shading for LightmappedGeneric is also available in Mapbase, but it is implemented differently.

Syntax

$phong <bool>

Note:All parameters in the following example must be specified in the material, otherwise Phong shading won't show up at all, except in Insurgency.

Todo: Other games that don't require all phong parameters present (likely Portal 2 and up)

VertexLitGeneric
{
	$phong 1

	$bumpmap				[texture]
	$phongexponent			5			// either/or
	$phongexponenttexture	[texture]	// either/or
	$phongboost				1.0
	$phongfresnelranges		"[0 0.5 1]"
}

Parameters

Masking

$bumpmap $basemapalphaphongmask $basemapluminancephongmask $phongexponent $phongexponenttexture $phongexponentfactor $invertphongmask $forcephong $diffuseexp $shinyblood $shinybloodexponent

Brightness

$phongboost $phongfresnelranges $phongdisablehalflambert

Colors

$phongalbedotint $phongalbedoboost

The Hunter without and with its $phongwarptexture, showing how it affects the Phong reflection.

$phongtint

Breakdown of the $phongwarptexture: computed coordinates, texture and result

$phongwarptexture

Brush phong in Counter-Strike: Global Offensive using tile/hr_t/inferno/tile_a. Note the complete absence of the reflection in the shaded area.

Brush Shader Parameters (only in )

$phongmaskcontrastbrightness $phongamount $phongbasetint

Console Commands

mat_phong <booleanRedirectInput/boolean>

Disable or enable phong shading. Default 1.

See Also

• Phong materials
• $envmap (environment map)
• $lightwarptexture
• $rimlight
• $Phong on brushes*: The Hacky Way (a TF2maps.net guide on how to fake $Phong on brushes for games prior to CS:GO)
• SubstancePainter Source Engine Complex Phong Shader