public ImageData CreateImageData(ImageData imagedata) { return default(ImageData); }
 public void PutImageData(ImageData imagedata, double dx, double dy, double dirtyX, double dirtyY, double dirtyWidth, double dirtyHeight) { }
 public void TexSubImage2D(int target, int level, int xoffset, int yoffset, int format, int type, ImageData pixels) { }
 public void PutImageData(ImageData imagedata, double dx, double dy) { }
 public void TexImage2D(int target, int level, int internalformat, int format, int type, ImageData pixels) { }