private void VoxelImage_FormClosing(object sender, EventArgs e)
{
vol.ReturnBuffer().Dispose();
color_buffer.Dispose();
opacity.Dispose();
manager.CQ[0].Dispose();
kernel.Dispose();
program.Dispose();
manager.Context.Dispose();
manager.Dispose();
VSurface.Dispose();
GC.Collect();
}
