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.
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
Specification | Status | Comment |
---|---|---|
WebGL 1.0 The definition of 'WebGLShaderPrecisionFormat.precision' in that specification. | Recommendation | Initial definition. |
Desktop | ||||||
---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
Basic support | 9 | 12 | 4 | 11 | 12 | 5.1 |
Mobile | |||||||
---|---|---|---|---|---|---|---|
Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
Basic support | Yes | 25 | Yes | Yes | 12 | 8.1 | Yes |
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https://developer.mozilla.org/en-US/docs/Web/API/WebGLShaderPrecisionFormat/precision