The WebGLRenderingContext.sampleCoverage()
method of the WebGL API specifies multi-sample coverage parameters for anti-aliasing effects.
WebGLRenderingContext.sampleCoverage()
Syntax
sampleCoverage(value, invert)
Parameters
Return value
None.
Examples
Multi-sampling is disabled by default. To enable or disable multi-sampling, use the enable()
and disable()
methods with the argument gl.SAMPLE_COVERAGE
and gl.SAMPLE_ALPHA_TO_COVERAGE
.
gl.enable(gl.SAMPLE_COVERAGE); gl.sampleCoverage(0.5, false);
To check the sample coverage values, query the SAMPLE_COVERAGE_VALUE
and SAMPLE_COVERAGE_INVERT
constants.
gl.getParameter(gl.SAMPLE_COVERAGE_VALUE); // 0.5 gl.getParameter(gl.SAMPLE_COVERAGE_INVERT); // false
Specifications
Specification |
---|
WebGL Specification # 5.14.3 |
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 | |
sampleCoverage |
9
|
12
|
4
|
11
|
12
|
5.1
|
4.4.3
|
25
|
4
|
12
|
8
|
1.5
|
See also
-
HTMLCanvasElement.getContext()
–antialias
parameter for the context.
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https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/sampleCoverage