specularConstant
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
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" filter="url(#specularLighting1)" />
<rect
x="220"
y="0"
width="200"
height="200"
filter="url(#specularLighting2)" />
</svg>
Usage notes
| Value | <number> |
|---|---|
| Default value | 1 |
| Animatable | Yes |
Specifications
Browser compatibility
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
specularConstant |
5 | 12 | 3 | 9 | 6 | 18 | 4 | 10.1 | 6 | 1.0 | 4.4 | 6 |
See also
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https://developer.mozilla.org/en-US/docs/Web/SVG/Reference/Attribute/specularConstant
