COMPRESSED_RGBA_S3TC_DXT1_EXT:Int = 0x83F1
COMPRESSED_RGBA_S3TC_DXT3_EXT:Int = 0x83F2
COMPRESSED_RGBA_S3TC_DXT5_EXT:Int = 0x83F3
COMPRESSED_RGB_S3TC_DXT1_EXT:Int = 0x83F0