WebGL EXT_texture_filter_anisotropic Khronos Ratified Extension Specification

Name

EXT_texture_filter_anisotropic

Contact

WebGL working group (public_webgl 'at' khronos.org)

Contributors

Members of the WebGL working group

Florian Bösch (pyalot 'at' gmail.com)

Version

Last modified date: March 20, 2025
Revision: 6

Number

WebGL extension #11

Dependencies

Written against the WebGL API 1.0 specification.

Overview

This extension exposes the EXT_texture_filter_anisotropic functionality to WebGL.

There are no WebGL-specific behavioral changes.

Consult the above extension for documentation, issues and new functions and enumerants.

When this extension is enabled:

• The getTexParameter, texParameterf and texParameteri entry points' parameter pname accepts the value TEXTURE_MAX_ANISOTROPY_EXT
• In WebGL 2, additionally the getSamplerParameter, samplerParameterf and samplerParameteri entry points' parameter pname accepts the value TEXTURE_MAX_ANISOTROPY_EXT
• The getParameter entry point parameter pname accepts the value MAX_TEXTURE_MAX_ANISOTROPY_EXT, returning a value of type float.

IDL

[Exposed=(Window,Worker), LegacyNoInterfaceObject]
interface EXT_texture_filter_anisotropic {
  const GLenum TEXTURE_MAX_ANISOTROPY_EXT       = 0x84FE;
  const GLenum MAX_TEXTURE_MAX_ANISOTROPY_EXT   = 0x84FF;
};
  

Revision History

Revision 1, 2012/01/27

• Initial revision.

Revision 2, 2012/02/24

• Added the EXT suffix to the enumerants and aliases to the extension name

Revision 3, 2012/07/19

• Moved from draft to community approved status

Revision 4, 2013/05/15

• Ratified by Khronos Board of Promoters.

Revision 5, 2014/07/15

• Added NoInterfaceObject extended attribute.

Revision 6, 2025/03/20

• Note that WebGL 2 supports this extension's pname in sampler entrypoints.