Small changes to microfacet code.
Small changes to microfacet code.

dictoon/appleseed,Biart95/appleseed,dictoon/appleseed,est77/appleseed,Aakash1312/appleseed,Aakash1312/appleseed,Vertexwahn/appleseed,aytekaman/appleseed,pjessesco/appleseed,Biart95/appleseed,glebmish/appleseed,Biart95/appleseed,Aakash1312/appleseed,aytekaman/appleseed,pjessesco/appleseed,dictoon/appleseed,aiivashchenko/appleseed,dictoon/appleseed,appleseedhq/appleseed,appleseedhq/appleseed,aiivashchenko/appleseed,gospodnetic/appleseed,aiivashchenko/appleseed,est77/appleseed,luisbarrancos/appleseed,Biart95/appleseed,appleseedhq/appleseed,Vertexwahn/appleseed,Aakash1312/appleseed,Vertexwahn/appleseed,luisbarrancos/appleseed,aiivashchenko/appleseed,Vertexwahn/appleseed,pjessesco/appleseed,luisbarrancos/appleseed,est77/appleseed,aytekaman/appleseed,aytekaman/appleseed,glebmish/appleseed,appleseedhq/appleseed,pjessesco/appleseed,aiivashchenko/appleseed,glebmish/appleseed,gospodnetic/appleseed,Vertexwahn/appleseed,aytekaman/appleseed,luisbarrancos/appleseed,glebmish/appleseed,gospodnetic/appleseed,appleseedhq/appleseed,gospodnetic/appleseed,pjessesco/appleseed,gospodnetic/appleseed,est77/appleseed,luisbarrancos/appleseed,Aakash1312/appleseed,Biart95/appleseed,glebmish/appleseed,dictoon/appleseed,est77/appleseed