Weight paint: Use helper function to get original mesh

Makes it one line to get needed mesh, no code duplication. And can easily
update asserts and tighten the nuts.

2 files changed, 4 insertions, 6 deletions

diff --git a/source/blender/blenkernel/intern/cdderivedmesh.c b/source/blender/blenkernel/intern/cdderivedmesh.c
index 562563390c4..f0ee3b4363c 100644
--- a/source/blender/blenkernel/intern/cdderivedmesh.c
+++ b/source/blender/blenkernel/intern/cdderivedmesh.c
@@ -46,6 +46,7 @@
 #include "BKE_global.h"
 #include "BKE_mesh.h"
 #include "BKE_mesh_mapping.h"
+#include "BKE_object.h"
 #include "BKE_paint.h"
 #include "BKE_editmesh.h"
 #include "BKE_curve.h"
@@ -291,9 +292,7 @@ static PBVH *cdDM_getPBVH(Object *ob, DerivedMesh *dm)
 	 * this derivedmesh is just original mesh. it's the multires subsurf dm
 	 * that this is actually for, to support a pbvh on a modified mesh */
 	if (!cddm->pbvh && ob->type == OB_MESH) {
-		Object *ob_orig = DEG_get_original_object(ob);
-		Mesh *me = ob_orig->data;
-		BLI_assert(!(me->id.tag & LIB_TAG_NO_MAIN));
+		Mesh *me = BKE_object_get_original_mesh(ob);
 		const int looptris_num = poly_to_tri_count(me->totpoly, me->totloop);
 		MLoopTri *looptri;
 		bool deformed;
diff --git a/source/blender/blenkernel/intern/subsurf_ccg.c b/source/blender/blenkernel/intern/subsurf_ccg.c
index bc54c554ee4..a64ef7962f1 100644
--- a/source/blender/blenkernel/intern/subsurf_ccg.c
+++ b/source/blender/blenkernel/intern/subsurf_ccg.c
@@ -69,6 +69,7 @@
 #include "BKE_mesh_mapping.h"
 #include "BKE_modifier.h"
 #include "BKE_multires.h"
+#include "BKE_object.h"
 #include "BKE_paint.h"
 #include "BKE_scene.h"
 #include "BKE_subsurf.h"
@@ -2329,9 +2330,7 @@ static struct PBVH *ccgDM_getPBVH(Object *ob, DerivedMesh *dm)
 		                     numGrids, &key, (void **) ccgdm->gridFaces, ccgdm->gridFlagMats, ccgdm->gridHidden);
 	}
 	else if (ob->type == OB_MESH) {
-		Object *ob_orig = DEG_get_original_object(ob);
-		Mesh *me = ob_orig->data;
-		BLI_assert(!(me->id.tag & LIB_TAG_NO_MAIN));
+		Mesh *me = BKE_object_get_original_mesh(ob);
 		const int looptris_num = poly_to_tri_count(me->totpoly, me->totloop);
 		MLoopTri *looptri;