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:
<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>
| Value | <number> |
|---|---|
| Default value | 1 |
| Animatable | Yes |
| 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 | No | Yes | Yes | Yes | No | No | Yes |
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https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/specularConstant