The WebGLShaderPrecisionFormat interface is part of the WebGL API and represents the information returned by calling the WebGLRenderingContext.getShaderPrecisionFormat() method.
WebGLShaderPrecisionFormat
Properties
-
WebGLShaderPrecisionFormat.rangeMinRead only -
The base 2 log of the absolute value of the minimum value that can be represented.
-
WebGLShaderPrecisionFormat.rangeMaxRead only -
The base 2 log of the absolute value of the maximum value that can be represented.
-
WebGLShaderPrecisionFormat.precisionRead only -
The number of bits of precision that can be represented. For integer formats this value is always 0.
Examples
A WebGLShaderPrecisionFormat object is returned by the WebGLRenderingContext.getShaderPrecisionFormat() method.
var canvas = document.getElementById('canvas'); var gl = canvas.getContext('webgl'); gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.MEDIUM_FLOAT); // WebGLShaderPrecisionFormat { rangeMin: 127, rangeMax: 127, precision: 23 }
Specifications
| Specification |
|---|
| WebGL Specification # 5.12 |
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 | |
WebGLShaderPrecisionFormat |
9
|
12
|
4
|
11
|
12
|
5.1
|
4.4
|
25
|
4
|
12
|
8
|
1.5
|
precision |
9
|
12
|
4
|
11
|
12
|
5.1
|
≤37
|
25
|
4
|
12
|
8
|
1.5
|
rangeMax |
9
|
12
|
4
|
11
|
12
|
5.1
|
≤37
|
25
|
4
|
12
|
8
|
1.5
|
rangeMin |
9
|
12
|
4
|
11
|
12
|
5.1
|
≤37
|
25
|
4
|
12
|
8
|
1.5
|
worker_support |
No
|
No
|
44
|
No
|
No
|
No
|
No
|
No
|
No
|
No
|
No
|
No
|
See also
© 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/WebGLShaderPrecisionFormat
