public static extern void DecompressImage(IntPtr rgba, int width, int height, IntPtr blocks, eSquishFlags flags);
public static extern void Decompress(IntPtr rgba, IntPtr block, eSquishFlags flags);
public static extern int GetStorageRequirements(int width, int height, eSquishFlags flags);
public static extern void CompressMasked(IntPtr rgba, int mask, IntPtr block, eSquishFlags flags);