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Showing content from https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/hint below:

WebGLRenderingContext: hint() method - Web APIs

In this article Syntax 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:

Return value

None (undefined).

Examples

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

gl.hint(gl.GENERATE_MIPMAP_HINT, gl.FASTEST);
Specifications Browser compatibility

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See also

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