feComposite
Description
The feComposite element for SVG specifies the combination of the two input images pixel-wise in image space using one of the Porter-Duff compositing operations: over, in, atop, out, xor, lighter.
Syntax
Attributes
in
Specifies the input for the filter primitive.
If no value is provided and this is the first filter primitive, then this filter primitive will use SourceGraphic as its input. If no value is provided and this is a subsequent filter primitive, then this filter primitive will use the result from the previous filter primitive as its input.
Value
SourceGraphic | SourceAlpha | BackgroundImage | BackgroundAlpha | FillPaint | StrokePaint | <filter-primitive-reference>
Default
SourceGraphic (or result)
in2
Specifies the second input image to the compositing operation.
If no value is provided and this is the first filter primitive, then this filter primitive will use SourceGraphic as its input. If no value is provided and this is a subsequent filter primitive, then this filter primitive will use the result from the previous filter primitive as its input.
Value
SourceGraphic | SourceAlpha | BackgroundImage | BackgroundAlpha | FillPaint | StrokePaint | <filter-primitive-reference>
Default
SourceGraphic (or result)
k1
Specifies the first k value of the formula when the operator attribute is arithmetic.
result = k1*in*in2 + k2*in + k3*in2 + k4
Value
<number>
Default
0
k2
Specifies the second k value of the formula when the operator attribute is arithmetic.
result = k1*in*in2 + k2*in + k3*in2 + k4
Value
<number>
Default
0
k3
Specifies the third k value of the formula when the operator attribute is arithmetic.
result = k1*in*in2 + k2*in + k3*in2 + k4
Value
<number>
Default
0
k4
Specifies the fourth k value of the formula when the operator attribute is arithmetic.
result = k1*in*in2 + k2*in + k3*in2 + k4
Value
<number>
Default
0
operator
Specifies the compositing operation that is to be performed.
Value
over | in | out | atop | xor | lighter | arithmetic
Default
over
