Modulate

GIF Animation showing "Modulate" shader in action.

Modulate is a Pixel shader available in all Source games. It modulates the colors of any pixels behind it.

Tip:This shader can be effectively used to fake various features that Source may not support, such as vertex coloring or lightmapping on models, by creating a surface above the first one to modulate it.

Description

Picture showing the difference between $mod2x 0 and 1.

Accepts only the following parameters:

$basetexture <texture>

Multiplies the color behind it with this surface's texture.

$mod2x <boolean>

Use DecalModulate blending instead of multiplication.

Code:Standard multiplication is equivalent to a BlendFunc of [DestinationColor,Zero], and Mod2x is equivalent to a BlendFunc of [DestinationColor, SourceColor]

$nocull <boolean>

Apply effect from through both sides of the polygon, instead of only through the front.

Note:Does not accept any translucency parameters, including $alpha, $alphatest, $additive and $translucent.

See also

• Refract
• Water