e_x_t_texture_compression_rgtc library Null safety

WebGL EXT_texture_compression_rgtc Extension Specification

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

Classes

EXT_texture_compression_rgtc
The extension is part of the WebGL API and exposes 4 RGTC compressed texture formats. RGTC is a block-based texture compression format suited for unsigned and signed red and red-green textures (Red-Green Texture Compression). [...]