/** Compressed texture extensions */
export declare type CompressedTextureExtensions = {
    s3tc?: WEBGL_compressed_texture_s3tc;
    s3tc_sRGB: WEBGL_compressed_texture_s3tc_srgb;
    etc: any;
    etc1: any;
    pvrtc: any;
    atc: any;
    astc: WEBGL_compressed_texture_astc;
};
export declare type CompressedTextureExtensionRef = keyof CompressedTextureExtensions;