Web/API/WebGLRenderingContext/hint

The WebGLRenderingContext.hint() method of the WebGL API specifies hints for certain behaviors. The interpretation of these hints depend on the implementation.

Syntax

void gl.hint(target, mode);

Parameters

target: Sets which behavior to be controlled. Possible values:

gl.GENERATE_MIPMAP_HINT

Quality of filtering when generating mipmap images with WebGLRenderingContext.generateMipmap().
When using the OES_standard_derivatives extension:

ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES

- Accuracy of the derivative calculation for the GLSL built-in functions: dFdx, dFdy, and fwidth.

When using a WebGL 2 context, the following values are available additionally

gl.FRAGMENT_SHADER_DERIVATIVE_HINT

- Same as ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES

mode: Sets the behavior. The default value is gl.DONT_CARE. The possible values are:

gl.FASTEST

The most efficient behavior should be used.
gl.NICEST: The most correct or the highest quality option should be used.
gl.DONT_CARE: There is no preference for this behavior.

Return value

None.

Examples

The following example hints that the quality of filtering when generating mipmap images should be most efficient instead of best quality.

gl.hint(gl.GENERATE_MIPMAP_HINT, gl.FASTEST);

Specifications

Specification	Status	Comment
WebGL 1.0The definition of 'hint' in that specification.	Recommendation	Initial definition.
OpenGL ES 2.0The definition of 'glHint' in that specification.	Standard	Man page of the OpenGL API.

Browser compatibility

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`hint`	Chrome Full support 9	Edge Full support 12	Firefox Full support 4	IE Full support 11	Opera Full support 12	Safari Full support 5.1	WebView Android Full support Yes	Chrome Android Full support 25	Firefox Android Full support Yes	Opera Android Full support 12	Safari iOS Full support 8	Samsung Internet Android Full support 1.5

Legend

Full support: Full support