abstract public void ReadPixels(object data, VGint dataStride, VGImageFormat dataFormat, VGint sx, VGint sy, VGint width, VGint height);
abstract public void GetImageSubData(VGImage image, object data, VGint dataStride, VGImageFormat dataFormat, VGint x, VGint y, VGint width, VGint height);
abstract public void WritePixels(object data, VGint dataStride, VGImageFormat dataFormat, VGint dx, VGint dy, VGint width, VGint height);
public VGImage(VGImageFormat format, int width, int height, VGbitfield allowedQuality) { this.Format = format; this.Width = width; this.Height = height; }