Enable material transparency when its alpha is below 1.0.

Differential Revision: https://developer.blender.org/D1934

io_scene_fbx/__init__.py

@@ -21,7 +21,7 @@
 bl_info = {
     "name": "FBX format",
     "author": "Campbell Barton, Bastien Montagne, Jens Restemeier",
-    "version": (3, 7, 2),
+    "version": (3, 7, 3),
     "blender": (2, 77, 0),
     "location": "File > Import-Export",
     "description": "FBX IO meshes, UV's, vertex colors, materials, textures, cameras, lamps and actions",

io_scene_fbx/import_fbx.py

@@ -1305,6 +1305,9 @@ def blen_read_material(fbx_tmpl, fbx_obj, settings):
         ma.diffuse_color = ma_diff
         ma.specular_color = ma_spec
         ma.alpha = ma_alpha
+        if ma_alpha < 1.0:
+            ma.use_transparency = True
+            ma.transparency_method = 'RAYTRACE'
         ma.specular_intensity = ma_spec_intensity
         ma.specular_hardness = ma_spec_hardness * 5.10 + 1.0