I am trying to test the mixing of two materials, one of them being a rock and the other being a blackbody emission so that they show equally at 100% (no 50-50 mix). I have that part accomplished, however whenever I add the Displacement channel in the MIX MATERIAL, my blackbody emissions get turned off. Attached are some images that help explain.
WITHOUT Displacement: http://imgur.com/c7uuy2h

WITH Displacement: http://imgur.com/HxdU8wU

Any help would be very much appreciated. Thanks!