Cycles microdisplacement: change use subdivision bool to subdivision type enum

This is only the UI change, there is no underlying code change in this commit.

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D1910

intern/cycles/blender/addon/properties.py

@@ -46,6 +46,12 @@ enum_displacement_methods = (
     ('BOTH', "Both", "Combination of displacement and bump mapping"),
     )
 
+enum_subdivision_types = (
+    ('NONE', "None", "No subdivision"),
+    ('LINEAR', "Linear", "Use linear subdivision"),
+    ('CATMULL_CLARK', "Catmull–Clark", "Use Catmull-Clark subdivision"),
+    )
+
 enum_bvh_types = (
     ('DYNAMIC_BVH', "Dynamic BVH", "Objects can be individually updated, at the cost of slower render time"),
     ('STATIC_BVH', "Static BVH", "Any object modification requires a complete BVH rebuild, but renders faster"),
@@ -931,10 +937,11 @@ class CyclesMeshSettings(bpy.types.PropertyGroup):
                 items=enum_displacement_methods,
                 default='BUMP',
                 )
-        cls.use_subdivision = BoolProperty(
-                name="Use Subdivision",
-                description="Subdivide mesh for rendering",
-                default=False,
+        cls.subdivision_type = EnumProperty(
+                name="Subdivision Type",
+                description="Type of subdivision to use",
+                items=enum_subdivision_types,
+                default='NONE',
                 )
         cls.dicing_rate = FloatProperty(
                 name="Dicing Rate",

intern/cycles/blender/addon/ui.py

@@ -682,7 +682,7 @@ class Cycles_PT_mesh_displacement(CyclesButtonsPanel, Panel):
             cdata = mball.cycles
 
         layout.prop(cdata, "displacement_method", text="Method")
-        layout.prop(cdata, "use_subdivision")
+        layout.prop(cdata, "subdivision_type", text="Subdivision")
         layout.prop(cdata, "dicing_rate")
 
 

intern/cycles/blender/blender_mesh.cpp

@@ -808,7 +808,7 @@ Mesh *BlenderSync::sync_mesh(BL::Object& b_ob,
 
 		if(b_mesh) {
 			if(render_layer.use_surfaces && !hide_tris) {
-				if(cmesh.data && experimental && RNA_boolean_get(&cmesh, "use_subdivision"))
+				if(cmesh.data && experimental && RNA_enum_get(&cmesh, "use_subdivision"))
 					create_subd_mesh(scene, mesh, b_ob, b_mesh, &cmesh, used_shaders);
 				else
 					create_mesh(scene, mesh, b_mesh, used_shaders);