http://blogs.msdn.com/pantal/archive/2007/07/23/sorting-for-wpf-3d-transparency.aspxJust a quick post here - When making WPF 3D apps, transparency can make for some powerful visual effects. The trouble is that any re-orientation of your scene or the camera will ruin the rendering order of your transparent content to obscure content whichen-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/pantal/archive/2007/07/23/sorting-for-wpf-3d-transparency.aspx#8483532Sat, 10 May 2008 08:21:59 GMT91d46819-8472-40ad-a661-2c78acb4018c:8483532Panel3D now supports transparency &laquo; Josh Smith on WPF<p>PingBack from <a rel="nofollow" target="_new" href="http://joshsmithonwpf.wordpress.com/2008/05/10/panel3d-now-supports-transparency/">http://joshsmithonwpf.wordpress.com/2008/05/10/panel3d-now-supports-transparency/</a></p> http://blogs.msdn.com/pantal/archive/2007/07/23/sorting-for-wpf-3d-transparency.aspx#9778264Fri, 19 Jun 2009 04:33:53 GMT91d46819-8472-40ad-a661-2c78acb4018c:9778264WPF3D Team Blog<p>I hinted at this a long time ago and then forgot to follow up, whoops! As the old post says, DiffuseMaterial</p>