WebGLShaderPrecisionFormat.precision

The read-only WebGLShaderPrecisionFormat.precision property returns the number of bits of precision that can be represented.

For integer formats this value is always 0.

Examples

var canvas = document.getElementById('canvas');
var gl = canvas.getContext('webgl');

gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.MEDIUM_FLOAT).precision; // 23
gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.LOW_INT).precision; // 0

Specifications

Specification
WebGL Specification (WebGL)
# DOM-WebGLShaderPrecisionFormat-precision

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
precision
9
12
4
11
12
5.1
≤37
25
Yes
12
8
1.5

See also

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https://developer.mozilla.org/en-US/docs/Web/API/WebGLShaderPrecisionFormat/precision