private void Render()
{
RE.Render(camera_Selected, scene_Selected, mesh_Selected);
Bitmap tempBitmap = RE.ScaleToFit(RE.Frame, displayPB.Size);
displayPB.BackgroundImage = tempBitmap; // RE.ScaleToFit(RE.Frame, displayPB.Size);
offset_w = (displayPB.Width - tempBitmap.Width) / 2;
offset_h = (displayPB.Height - tempBitmap.Height) / 2;
displayPB.Refresh();
//MessageBox.Show("Rendering has completed");
}