Fluid: Added new viscosity solver

Mainly updated the Mantaflow version. It includes the new viscosity solver plugin based on the method from 'Accurate Viscous Free Surfaces for Buckling, Coiling, and Rotating Liquids' (Batty & Bridson).

In the UI, this update adds a new 'Viscosity' section to the fluid modifier UI (liquid domains only). For now, there is a single 'strength' value to control the viscosity of liquids.

1 files changed, 6 insertions, 3 deletions

diff --git a/source/blender/blenloader/intern/versioning_userdef.c b/source/blender/blenloader/intern/versioning_userdef.c
index f1572c563bf..b9f09e0326d 100644
--- a/source/blender/blenloader/intern/versioning_userdef.c
+++ b/source/blender/blenloader/intern/versioning_userdef.c
@@ -820,6 +820,12 @@ void blo_do_versions_userdef(UserDef *userdef)
     userdef->uiflag &= ~USER_UIFLAG_UNUSED_3;
   }
 
+  if (!USER_VERSION_ATLEAST(292, 9)) {
+    if (BLI_listbase_is_empty(&userdef->asset_libraries)) {
+      BKE_preferences_asset_library_default_add(userdef);
+    }
+  }
+
   /**
    * Versioning code until next subversion bump goes here.
    *
@@ -831,9 +837,6 @@ void blo_do_versions_userdef(UserDef *userdef)
    */
   {
     /* Keep this block, even when empty. */
-    if (BLI_listbase_is_empty(&userdef->asset_libraries)) {
-      BKE_preferences_asset_library_default_add(userdef);
-    }
   }
 
   LISTBASE_FOREACH (bTheme *, btheme, &userdef->themes) {