The diffuseConstant attribute represents the kd 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.
Only one element is using this attribute: <feDiffuseLighting>
html, body, svg {
height: 100%;
}
<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" style="filter: url(#diffuseLighting1);" />
<rect x="0" y="0" width="200" height="200" style="filter: url(#diffuseLighting2); 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 'diffuseConstant' in that specification. |
Working Draft | No change |
| Scalable Vector Graphics (SVG) 1.1 (Second Edition) The definition of 'diffuseConstant' in that specification. |
Recommendation | Initial definition |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
diffuseConstant | Chrome ? | Edge ? | Firefox ? | IE ? | Opera ? | Safari ? | WebView Android ? | Chrome Android ? | Firefox Android ? | Opera Android ? | Safari iOS ? | Samsung Internet Android ? |
Legend
- Compatibility unknown
- Compatibility unknown