EXT_blend_minmax
The EXT_blend_minmax
extension is part of the WebGL API and extends blending capabilities by adding two new blend equations: the minimum or maximum color components of the source and destination colors.
WebGL extensions are available using the WebGLRenderingContext.getExtension()
method. For more information, see also Using Extensions in the WebGL tutorial.
Note: This extension is only available to WebGL1 contexts. In WebGL2, the functionality of this extension is available on the WebGL2 context by default. The constants in WebGL2 are gl.MIN
and gl.MAX
.
Constants
This extension adds two new constants, which can be used in WebGLRenderingContext.blendEquation()
and WebGLRenderingContext.blendEquationSeparate()
:
ext.MIN_EXT
-
Produces the minimum color components of the source and destination colors.
ext.MAX_EXT
-
Produces the maximum color components of the source and destination colors.
Examples
var ext = gl.getExtension('EXT_blend_minmax');
gl.blendEquation(ext.MIN_EXT);
gl.blendEquation(ext.MAX_EXT);
gl.blendEquationSeparate(ext.MIN_EXT, ext.MAX_EXT);
Specifications
Specification |
---|
WebGL EXT_blend_minmax Khronos Ratified Extension Specification (WebGL EXT_blend_minmax Khronos Ratified Extension) |
Browser compatibility
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
EXT_blend_minmax |
38 |
17 |
47
35-47
Not supported on Windows.
|
No |
25 |
7 |
38 |
38 |
? |
25 |
9 |
3.0 |
See also
WebGLRenderingContext.getExtension()
WebGLRenderingContext.blendEquation()
WebGLRenderingContext.blendEquationSeparate()
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https://developer.mozilla.org/en-US/docs/Web/API/EXT_blend_minmax