diffuseConstant

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨January 2020⁩.

The diffuseConstant attribute represents the k_d value in the Phong lighting model. In SVG, this can be any non-negative number.

It's used to determine the final RGB value of a given pixel. The brighter the lighting-color, the smaller this number should be.

You can use this attribute with the following SVG elements:

<feDiffuseLighting>

Example

html, body, svg { height: 100%; }

html

<svg viewBox="0 0 420 200" xmlns="http://www.w3.org/2000/svg"> <filter id="diffuseLighting1" x="0" y="0" width="100%" height="100%"> <feDiffuseLighting in="SourceGraphic" diffuseConstant="1"> <fePointLight x="60" y="60" z="20" /> </feDiffuseLighting> </filter> <filter id="diffuseLighting2" x="0" y="0" width="100%" height="100%"> <feDiffuseLighting in="SourceGraphic" diffuseConstant="2"> <fePointLight x="60" y="60" z="20" /> </feDiffuseLighting> </filter> <rect x="0" y="0" width="200" height="200" filter="url(#diffuseLighting1)" /> <rect x="220" y="0" width="200" height="200" filter="url(#diffuseLighting2)" /> </svg>