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 withWebGLRenderingContext.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
, andfwidth
.
- When using a WebGL 2 context, the following values are available additionally:
gl.FRAGMENT_SHADER_DERIVATIVE_HINT
: Same asext.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 1.0 The definition of 'hint' in that specification. |
Recommendation | Initial definition. |
OpenGL ES 2.0 The 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.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
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