Web
The WebGLShaderPrecisionFormat interface is part of the WebGL API and represents the information returned by calling the
WebGLRenderingContext.getShaderPrecisionFormat() method.Properties
WebGLShaderPrecisionFormat.rangeMin- The base 2 log of the absolute value of the minimum value that can be represented.
WebGLShaderPrecisionFormat.rangeMax- The base 2 log of the absolute value of the maximum value that can be represented.
WebGLShaderPrecisionFormat.precision- 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 | Status | Comment |
|---|---|---|
| WebGL 1.0 The definition of 'WebGLShaderPrecisionFormat' in that specification. | Recommendation | Initial definition. |
Browser compatibility
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | Servo |
|---|---|---|---|---|---|---|---|
| Basic Support | 9 | 12 | 11.0 | 11 | 12 | 5.1 | No support |
| Available in workers | No support | No support | No support1 | No support | No support | No support | No support |
1. This feature is experimentally implemented since Firefox 44; to activate it, in about:config, set gfx.offscreencanvas.enabled to true
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