1 files changed, 82 insertions, 37 deletions

diff --git a/source/blender/blenkernel/intern/volume.cc b/source/blender/blenkernel/intern/volume.cc
index b0b7a60b556..26c5810aefa 100644
--- a/source/blender/blenkernel/intern/volume.cc
+++ b/source/blender/blenkernel/intern/volume.cc
@@ -21,6 +21,7 @@
 #include "MEM_guardedalloc.h"
 
 #include "DNA_defaults.h"
+#include "DNA_material_types.h"
 #include "DNA_object_types.h"
 #include "DNA_scene_types.h"
 #include "DNA_volume_types.h"
@@ -442,26 +443,6 @@ static void volume_init_data(ID *id)
   BKE_volume_init_grids(volume);
 }
 
-void BKE_volume_init_grids(Volume *volume)
-{
-#ifdef WITH_OPENVDB
-  if (volume->runtime.grids == NULL) {
-    volume->runtime.grids = OBJECT_GUARDED_NEW(VolumeGridVector);
-  }
-#else
-  UNUSED_VARS(volume);
-#endif
-}
-
-void *BKE_volume_add(Main *bmain, const char *name)
-{
-  Volume *volume = (Volume *)BKE_libblock_alloc(bmain, ID_VO, name, 0);
-
-  volume_init_data(&volume->id);
-
-  return volume;
-}
-
 static void volume_copy_data(Main *UNUSED(bmain),
                              ID *id_dst,
                              const ID *id_src,
@@ -483,18 +464,6 @@ static void volume_copy_data(Main *UNUSED(bmain),
 #endif
 }
 
-Volume *BKE_volume_copy(Main *bmain, const Volume *volume)
-{
-  Volume *volume_copy;
-  BKE_id_copy(bmain, &volume->id, (ID **)&volume_copy);
-  return volume_copy;
-}
-
-static void volume_make_local(Main *bmain, ID *id, const int flags)
-{
-  BKE_lib_id_make_local_generic(bmain, id, flags);
-}
-
 static void volume_free_data(ID *id)
 {
   Volume *volume = (Volume *)id;
@@ -506,6 +475,14 @@ static void volume_free_data(ID *id)
 #endif
 }
 
+static void volume_foreach_id(ID *id, LibraryForeachIDData *data)
+{
+  Volume *volume = (Volume *)id;
+  for (int i = 0; i < volume->totcol; i++) {
+    BKE_LIB_FOREACHID_PROCESS(data, volume->mat[i], IDWALK_CB_USER);
+  }
+}
+
 IDTypeInfo IDType_ID_VO = {
     /* id_code */ ID_VO,
     /* id_filter */ FILTER_ID_VO,
@@ -519,9 +496,37 @@ IDTypeInfo IDType_ID_VO = {
     /* init_data */ volume_init_data,
     /* copy_data */ volume_copy_data,
     /* free_data */ volume_free_data,
-    /* make_local */ volume_make_local,
+    /* make_local */ nullptr,
+    /* foreach_id */ volume_foreach_id,
 };
 
+void BKE_volume_init_grids(Volume *volume)
+{
+#ifdef WITH_OPENVDB
+  if (volume->runtime.grids == NULL) {
+    volume->runtime.grids = OBJECT_GUARDED_NEW(VolumeGridVector);
+  }
+#else
+  UNUSED_VARS(volume);
+#endif
+}
+
+void *BKE_volume_add(Main *bmain, const char *name)
+{
+  Volume *volume = (Volume *)BKE_libblock_alloc(bmain, ID_VO, name, 0);
+
+  volume_init_data(&volume->id);
+
+  return volume;
+}
+
+Volume *BKE_volume_copy(Main *bmain, const Volume *volume)
+{
+  Volume *volume_copy;
+  BKE_id_copy(bmain, &volume->id, (ID **)&volume_copy);
+  return volume_copy;
+}
+
 /* Sequence */
 
 static int volume_sequence_frame(const Depsgraph *depsgraph, const Volume *volume)
@@ -795,12 +800,52 @@ bool BKE_volume_is_points_only(const Volume *volume)
 
 /* Dependency Graph */
 
-static Volume *volume_evaluate_modifiers(struct Depsgraph *UNUSED(depsgraph),
-                                         struct Scene *UNUSED(scene),
-                                         Object *UNUSED(object),
+static Volume *volume_evaluate_modifiers(struct Depsgraph *depsgraph,
+                                         struct Scene *scene,
+                                         Object *object,
                                          Volume *volume_input)
 {
-  return volume_input;
+  Volume *volume = volume_input;
+
+  /* Modifier evaluation modes. */
+  const bool use_render = (DEG_get_mode(depsgraph) == DAG_EVAL_RENDER);
+  const int required_mode = use_render ? eModifierMode_Render : eModifierMode_Realtime;
+  ModifierApplyFlag apply_flag = use_render ? MOD_APPLY_RENDER : MOD_APPLY_USECACHE;
+  const ModifierEvalContext mectx = {depsgraph, object, apply_flag};
+
+  /* Get effective list of modifiers to execute. Some effects like shape keys
+   * are added as virtual modifiers before the user created modifiers. */
+  VirtualModifierData virtualModifierData;
+  ModifierData *md = BKE_modifiers_get_virtual_modifierlist(object, &virtualModifierData);
+
+  /* Evaluate modifiers. */
+  for (; md; md = md->next) {
+    const ModifierTypeInfo *mti = (const ModifierTypeInfo *)BKE_modifier_get_info(
+        (ModifierType)md->type);
+
+    if (!BKE_modifier_is_enabled(scene, md, required_mode)) {
+      continue;
+    }
+
+    if (mti->modifyVolume) {
+      /* Ensure we are not modifying the input. */
+      if (volume == volume_input) {
+        volume = BKE_volume_copy_for_eval(volume, true);
+      }
+
+      Volume *volume_next = mti->modifyVolume(md, &mectx, volume);
+
+      if (volume_next && volume_next != volume) {
+        /* If the modifier returned a new volume, release the old one. */
+        if (volume != volume_input) {
+          BKE_id_free(NULL, volume);
+        }
+        volume = volume_next;
+      }
+    }
+  }
+
+  return volume;
 }
 
 void BKE_volume_eval_geometry(struct Depsgraph *depsgraph, Volume *volume)