Subsurf: Show error when Blender is built without OpenSubdiv

3 files changed, 12 insertions, 0 deletions

diff --git a/source/blender/modifiers/CMakeLists.txt b/source/blender/modifiers/CMakeLists.txt
index 5116fefde94..1ae1f891e6f 100644
--- a/source/blender/modifiers/CMakeLists.txt
+++ b/source/blender/modifiers/CMakeLists.txt
@@ -141,6 +141,10 @@ if(WITH_MOD_OCEANSIM)
   add_definitions(-DWITH_OCEANSIM)
 endif()
 
+if(WITH_OPENSUBDIV)
+  add_definitions(-DWITH_OPENSUBDIV)
+endif()
+
 if(WITH_BULLET)
   list(APPEND LIB
     extern_bullet
diff --git a/source/blender/modifiers/intern/MOD_multires.c b/source/blender/modifiers/intern/MOD_multires.c
index c64d9be1158..dd7c001931c 100644
--- a/source/blender/modifiers/intern/MOD_multires.c
+++ b/source/blender/modifiers/intern/MOD_multires.c
@@ -168,6 +168,10 @@ static Mesh *multires_as_ccg(MultiresModifierData *mmd,
 static Mesh *applyModifier(ModifierData *md, const ModifierEvalContext *ctx, Mesh *mesh)
 {
   Mesh *result = mesh;
+#if !defined(WITH_OPENSUBDIV)
+  modifier_setError(md, "Disabled, built without OpenSubdiv");
+  return result;
+#endif
   MultiresModifierData *mmd = (MultiresModifierData *)md;
   SubdivSettings subdiv_settings;
   BKE_multires_subdiv_settings_init(&subdiv_settings, mmd);
diff --git a/source/blender/modifiers/intern/MOD_subsurf.c b/source/blender/modifiers/intern/MOD_subsurf.c
index 0b1249e263c..08a884fa879 100644
--- a/source/blender/modifiers/intern/MOD_subsurf.c
+++ b/source/blender/modifiers/intern/MOD_subsurf.c
@@ -208,6 +208,10 @@ static SubsurfRuntimeData *subsurf_ensure_runtime(SubsurfModifierData *smd)
 static Mesh *applyModifier(ModifierData *md, const ModifierEvalContext *ctx, Mesh *mesh)
 {
   Mesh *result = mesh;
+#if !defined(WITH_OPENSUBDIV)
+  modifier_setError(md, "Disabled, built without OpenSubdiv");
+  return result;
+#endif
   SubsurfModifierData *smd = (SubsurfModifierData *)md;
   SubdivSettings subdiv_settings;
   subdiv_settings_init(&subdiv_settings, smd);