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
JavaScript
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void <var>gl</var>.hint(<var>target</var>, <var>mode</var>);
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
.
- 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.
JavaScript
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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
Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|---|
Basic support | 9 | 12 | 4.0 (2.0) | ? | 12 | 5.1 |
Feature | Android | Chrome for Android | Edge | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|---|---|
Basic support | ? | 25 | (Yes) | 4.0 (2.0) | 1.0 | ? | 12 | 8.0 |
See also
License
© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/api/webglrenderingcontext/hint