k4
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 k4
attribute defines one of the values to be used within the arithmetic
operation of the <feComposite>
filter primitive.
The pixel composition is computed using the following formula:
result = k1*i1*i2 + k2*i1 + k3*i2 + k4
You can use this attribute with the following SVG elements:
Example
html
<svg viewBox="0 0 420 200" xmlns="http://www.w3.org/2000/svg">
<filter id="composite1" x="0" y="0" width="100%" height="100%">
<feComposite
in2="SourceGraphic"
operator="arithmetic"
k1="1"
k2="0"
k3="0"
k4="0" />
</filter>
<filter id="composite2" x="0" y="0" width="100%" height="100%">
<feComposite
in2="SourceGraphic"
operator="arithmetic"
k1="10"
k2="0"
k3="0"
k4="0.3" />
</filter>
<image
href="mdn.svg"
x="0"
y="0"
width="200"
height="200"
style="filter: url(#composite1);" />
<image
href="mdn.svg"
x="0"
y="0"
width="200"
height="200"
style="filter: url(#composite2); transform: translateX(220px);" />
</svg>
Usage notes
Value | <number> |
---|---|
Default value | 0 |
Animatable | Yes |
Specifications
Specification |
---|
Filter Effects Module Level 1 # element-attrdef-fecomposite-k4 |
Browser compatibility
Report problems with this compatibility data on GitHubdesktop | mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
k4 |
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
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.