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The <feSpecularLighting> SVG filter primitive lights a source graphic using the alpha channel as a bump map. The resulting image is an RGBA image based on the light color. The lighting calculation follows the standard specular component of the Phong lighting model. The resulting image depends on the light color, light position and surface geometry of the input bump map. The result of the lighting calculation is added. The filter primitive assumes that the viewer is at infinity in the z direction.

This filter primitive produces an image which contains the specular reflection part of the lighting calculation. Such a map is intended to be combined with a texture using the add term of the arithmetic <feComposite> method. Multiple light sources can be simulated by adding several of these light maps before applying it to the texture image.

Usage context

CategoriesFilter primitive element
Permitted contentExactly one light source element first and any number of descriptive elements in any order.

Attributes

Global attributes

Specific attributes

DOM Interface

This element implements the SVGFESpecularLightingElement interface.

Example

<svg height="200" width="200" viewBox="0 0 220 220"
    xmlns="http://www.w3.org/2000/svg">
  <filter id = "filter">
    <feSpecularLighting result="specOut"
        specularExponent="20" lighting-color="#bbbbbb">
      <fePointLight x="50" y="75" z="200"/>
    </feSpecularLighting>
    <feComposite in="SourceGraphic" in2="specOut"
        operator="arithmetic" k1="0" k2="1" k3="1" k4="0"/>
  </filter>
  <circle cx="110" cy="110" r="100" style="filter:url(#filter)"/>
</svg>

Result

Specifications

Specification Status Comment
Filter Effects Module Level 1
The definition of '<feSpecularLighting>' in that specification.
Working Draft Removed limitation of specularExponent attribute.
Scalable Vector Graphics (SVG) 1.1 (Second Edition)
The definition of '<feSpecularLighting>' in that specification.
Recommendation Initial definition

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Basic supportChrome Full support YesEdge Full support YesFirefox Full support 4IE Full support YesOpera Full support 9Safari ? WebView Android ? Chrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support YesOpera Android ? Safari iOS ? Samsung Internet Android ?
inChrome Full support YesEdge Full support YesFirefox Full support 4IE Full support YesOpera Full support 9Safari ? WebView Android ? Chrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support YesOpera Android ? Safari iOS ? Samsung Internet Android ?
kernelUnitLengthChrome ? Edge ? Firefox ? IE ? Opera ? Safari ? WebView Android ? Chrome Android ? Edge Mobile ? Firefox Android ? Opera Android ? Safari iOS ? Samsung Internet Android ?
specularConstantChrome Full support YesEdge Full support YesFirefox Full support 4IE Full support YesOpera Full support 9Safari ? WebView Android ? Chrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support YesOpera Android ? Safari iOS ? Samsung Internet Android ?
specularExponentChrome Full support YesEdge Full support YesFirefox Full support 4IE Full support YesOpera Full support 9Safari ? WebView Android ? Chrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support YesOpera Android ? Safari iOS ? Samsung Internet Android ?
surfaceScaleChrome ? Edge ? Firefox ? IE ? Opera ? Safari ? WebView Android ? Chrome Android ? Edge Mobile ? Firefox Android ? Opera Android ? Safari iOS ? Samsung Internet Android ?

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown

See also

Autorzy i etykiety dokumentu

Ostatnia aktualizacja: Jeremie,