specularConstant

The specularConstant attribute controls the ratio of reflection of the specular lighting. It represents the ks value in the Phong lighting model. The bigger the value the stronger the reflection.

You can use this attribute with the following SVG elements:

Example

<svg viewBox="0 0 420 200" xmlns="http://www.w3.org/2000/svg">
  <filter id="specularLighting1" x="0" y="0" width="100%" height="100%">
    <feSpecularLighting in="SourceGraphic" specularConstant="1.2">
      <fePointLight x="60" y="60" z="20" />
    </feSpecularLighting>
  </filter>
  <filter id="specularLighting2" x="0" y="0" width="100%" height="100%">
    <feSpecularLighting in="SourceGraphic" specularConstant="0.8">
      <fePointLight x="60" y="60" z="20" />
    </feSpecularLighting>
  </filter>

  <rect x="0" y="0" width="200" height="200" style="filter: url(#specularLighting1);" />
  <rect x="0" y="0" width="200" height="200"
      style="filter: url(#specularLighting2); transform: translateX(220px);" />
</svg>

Usage notes

Value <number>
Default value 1
Animatable Yes

Specifications

Specification Status Comment
Filter Effects Module Level 1
The definition of 'specularConstant' in that specification.		 Working Draft No change
Scalable Vector Graphics (SVG) 1.1 (Second Edition)
The definition of 'specularConstant' in that specification.		 Recommendation Initial definition

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
specularConstant
Yes
12
4
Yes
9
?
Yes
Yes
Yes
?
?
Yes

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/specularConstant