WebGLShaderPrecisionFormat

Baseline Widely available *

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

* Some parts of this feature may have varying levels of support.

Note: This feature is available inWeb Workers.

TheWebGLShaderPrecisionFormat interface is part of theWebGL API and represents the information returned by calling theWebGLRenderingContext.getShaderPrecisionFormat() method.

Instance 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

AWebGLShaderPrecisionFormat object is returned by theWebGLRenderingContext.getShaderPrecisionFormat() method.

const canvas = document.getElementById("canvas");const gl = canvas.getContext("webgl");gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.MEDIUM_FLOAT);// WebGLShaderPrecisionFormat { rangeMin: 127, rangeMax: 127, precision: 23 }