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WebGLShaderPrecisionFormat

files/en-us/web/api/webglshaderprecisionformat/index.md

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{{APIRef("WebGL")}}{{AvailableInWorkers}}

The WebGLShaderPrecisionFormat interface is part of the WebGL API and represents the information returned by calling the {{domxref("WebGLRenderingContext.getShaderPrecisionFormat()")}} method.

Instance properties

  • {{domxref("WebGLShaderPrecisionFormat.rangeMin")}} {{ReadOnlyInline}}
    • : The base 2 log of the absolute value of the minimum value that can be represented.
  • {{domxref("WebGLShaderPrecisionFormat.rangeMax")}} {{ReadOnlyInline}}
    • : The base 2 log of the absolute value of the maximum value that can be represented.
  • {{domxref("WebGLShaderPrecisionFormat.precision")}} {{ReadOnlyInline}}
    • : 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 {{domxref("WebGLRenderingContext.getShaderPrecisionFormat()")}} method.

js
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

{{Specifications}}

Browser compatibility

{{Compat}}

See also

  • {{domxref("WebGLRenderingContext.getShaderPrecisionFormat()")}}