e_x_t_texture_filter_anisotropic library Null safety

WebGL EXT_texture_filter_anisotropic Khronos Ratified Extension Specification

https://www.khronos.org/registry/webgl/extensions/EXT_texture_filter_anisotropic/

Classes

EXT_texture_filter_anisotropic
The EXT_texture_filter_anisotropic extension is part of the WebGL API and exposes two constants for anisotropic filtering (AF). [...]