Multires: Subdivide Simple and Subdivide Linear

This introduces two alternative subdivision modes that generates
displacement on the grids that look as Simple subdivisions but while
using the Catmull-Clark subdivision type in the modifier. This way,
Simple and Catmull-Clark subdivision can be combined when creating new
levels if needed, for example, to sculpt hard surface objects.

Subdivide simple smooths the sculpted data when creating a new
subdivision level. Subdivide linear also preserves the sharpness
in the sculpted data.

Reviewed By: sergey

Differential Revision: https://developer.blender.org/D7415

1 files changed, 9 insertions, 1 deletions

diff --git a/release/scripts/startup/bl_ui/properties_data_modifier.py b/release/scripts/startup/bl_ui/properties_data_modifier.py
index 9a034dfe378..6e6bcd81cdc 100644
--- a/release/scripts/startup/bl_ui/properties_data_modifier.py
+++ b/release/scripts/startup/bl_ui/properties_data_modifier.py
@@ -696,7 +696,15 @@ class DATA_PT_modifiers(ModifierButtonsPanel, Panel):
         col = split.column()
 
         col.enabled = ob.mode != 'EDIT'
-        col.operator("object.multires_subdivide", text="Subdivide")
+        op = col.operator("object.multires_subdivide", text="Subdivide")
+        op.mode = 'CATMULL_CLARK'
+
+        op = col.operator("object.multires_subdivide", text="Subdivide Simple")
+        op.mode = 'SIMPLE'
+
+        op = col.operator("object.multires_subdivide", text="Subdivide Linear")
+        op.mode = 'LINEAR'
+
         col.operator("object.multires_higher_levels_delete", text="Delete Higher")
         col.operator("object.multires_unsubdivide", text="Unsubdivide")
         col.operator("object.multires_reshape", text="Reshape")