$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 . It requires the material to be lit by 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.

Syntax

$phong <bool>

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

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 $invertphongmask $phongexponentfactor $forcephong $shinyblood $shinybloodexponent $diffuseexp

Brightness

$phongboost $phongfresnelranges $phongdisablehalflambert $ambientocclusiontexture

Colours

$phongalbedotint $phongalbedoboost

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

$phongtint $phongwarptexture

Brush Shader Parameters

$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