preserveAlpha

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.

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preserveAlpha 属性表示<feConvolveMatrix> 元素怎样处透明度。

取值为 false 表示 feConvolveMatrix 元素将应用在包括透明度通道的所有的通道。这是默认的选项。

取值为 true 表示 feConvolveMatrix 仅应用在颜色通道。

使用说明

类别 None
值 true | false
可变性 Yes

示例

元素

下列元素可以使用 preserveAlpha 属性

规范

Specification
Filter Effects Module Level 1
# element-attrdef-feconvolvematrix-preservealpha