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dirlight

The dirlight shader module is a lightweight alternative to the full lighting module. It applies a single directional-light dot product and is intended for simple materials or examples that do not need multiple light sources.

Props​

lightDirection?: [number, number, number]​

Direction of the light in world space.

Usage​

In the vertex shader, pass the transformed normal to the module:

dirlight_setNormal(normalize(worldNormal));

In the fragment shader, filter the output color:

fragColor = dirlight_filterColor(fragColor);

Uniforms​

{
  lightDirection: 'vec3<f32>'
}

The default light direction is [1, 1, 2].

Shader Functions​

dirlight_setNormal(normal)​

Stores the surface normal for later lighting evaluation.

dirlight_filterColor(color)​

Applies a single directional Lambert-style term to the input color.

Remarks​

  • dirlight is intentionally simple and does not share the lighting module's multi-light uniform layout.
  • If you need ambient light, multiple lights, or shared scene lighting across several material modules, use lighting instead.