abstract public void SetPixels(VGint dx, VGint dy,
VGImage src, VGint sx, VGint sy,
VGint width, VGint height);
abstract public void GetPixels(VGImage dst, VGint dx, VGint dy,
VGint sx, VGint sy,
VGint width, VGint height);
abstract public void DrawImage(VGImage image);
abstract public void CopyImage(VGImage dst, VGint dx, VGint dy,
VGImage src, VGint sx, VGint sy,
VGint width, VGint height,
VGboolean dither);
abstract public VGImage GetParent(VGImage image);
abstract public VGImage ChildImage(VGImage parent,
VGint x, VGint y, VGint width, VGint height);
abstract public void GetImageSubData(VGImage image,
object data, VGint dataStride,
VGImageFormat dataFormat,
VGint x, VGint y,
VGint width, VGint height);
