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 in Web Workers.
The WebGLShaderPrecisionFormat interface is part of the WebGL API and represents the information returned by calling the WebGLRenderingContext.getShaderPrecisionFormat()
method.
Instance properties
WebGLShaderPrecisionFormat.rangeMin
Read only-
The base 2 log of the absolute value of the minimum value that can be represented.
WebGLShaderPrecisionFormat.rangeMax
Read only-
The base 2 log of the absolute value of the maximum value that can be represented.
WebGLShaderPrecisionFormat.precision
Read 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.
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 }
Specifications
Specification |
---|
WebGL Specification # 5.12 |
Browser compatibility
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- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.