From dfb963c70df515213c452094c20c83720bc017ee Mon Sep 17 00:00:00 2001 From: Campbell Barton Date: Tue, 18 May 2021 12:53:28 +1000 Subject: Fix T88026: Repeated switch to rendered viewport crashes Resolve ownership ambiguity with shared physics pointers. Previously, LIB_ID_CREATE_NO_MAIN allowed pointer sharing with the source ID so physics caches can be shared between original and evaluated data: (Object.soft.shared & Object.rigidbody_object.shared). This only worked properly for LIB_TAG_COPIED_ON_WRITE ID's, as LIB_TAG_NO_MAIN can be used in situations where the original ID's lifetime limited by it's original data. This commit adds `LIB_ID_COPY_SET_COPIED_ON_WRITE` so ID's only share memory with original data for ID's evaluated in the depsgraph. For all other uses, a full copy of physics data is made. Ref D11228#287094 --- source/blender/blenkernel/intern/rigidbody.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'source/blender/blenkernel/intern/rigidbody.c') diff --git a/source/blender/blenkernel/intern/rigidbody.c b/source/blender/blenkernel/intern/rigidbody.c index 19078446009..2539b990210 100644 --- a/source/blender/blenkernel/intern/rigidbody.c +++ b/source/blender/blenkernel/intern/rigidbody.c @@ -260,10 +260,12 @@ static RigidBodyOb *rigidbody_copy_object(const Object *ob, const int flag) RigidBodyOb *rboN = NULL; if (ob->rigidbody_object) { + const bool is_orig = (flag & LIB_ID_COPY_SET_COPIED_ON_WRITE) == 0; + /* just duplicate the whole struct first (to catch all the settings) */ rboN = MEM_dupallocN(ob->rigidbody_object); - if ((flag & LIB_ID_CREATE_NO_MAIN) == 0) { + if (is_orig) { /* This is a regular copy, and not a CoW copy for depsgraph evaluation */ rboN->shared = MEM_callocN(sizeof(*rboN->shared), "RigidBodyOb_Shared"); } -- cgit v1.2.3