Merge branch 'master' into blender2.8

2 files changed, 14 insertions, 7 deletions

diff --git a/source/blender/blenkernel/intern/pointcache.c b/source/blender/blenkernel/intern/pointcache.c
index 341a4d1fde5..5ec3156f4df 100644
--- a/source/blender/blenkernel/intern/pointcache.c
+++ b/source/blender/blenkernel/intern/pointcache.c
@@ -3619,7 +3619,13 @@ void BKE_ptcache_bake(PTCacheBaker *baker)
 						psys_get_pointcache_start_end(scene, pid->calldata, &cache->startframe, &cache->endframe);
 					}
 
-					if (((cache->flag & PTCACHE_BAKED) == 0) && (render || bake)) {
+					// XXX workaround for regression inroduced in ee3fadd, needs looking into
+					if (pid->type == PTCACHE_TYPE_RIGIDBODY) {
+						if ((cache->flag & PTCACHE_REDO_NEEDED || (cache->flag & PTCACHE_SIMULATION_VALID)==0) && (render || bake)) {
+							BKE_ptcache_id_clear(pid, PTCACHE_CLEAR_ALL, 0);
+						}
+					}
+					else if (((cache->flag & PTCACHE_BAKED) == 0) && (render || bake)) {
 						BKE_ptcache_id_clear(pid, PTCACHE_CLEAR_ALL, 0);
 					}
 
diff --git a/source/blender/blenkernel/intern/rigidbody.c b/source/blender/blenkernel/intern/rigidbody.c
index df048ce5036..f75b14579c7 100644
--- a/source/blender/blenkernel/intern/rigidbody.c
+++ b/source/blender/blenkernel/intern/rigidbody.c
@@ -1595,8 +1595,12 @@ void BKE_rigidbody_do_simulation(const struct EvaluationContext *eval_ctx, Scene
 	BKE_ptcache_id_time(&pid, scene, ctime, &startframe, &endframe, NULL);
 	cache = rbw->pointcache;
 
+	if (ctime <= startframe) {
+		rbw->ltime = startframe;
+		return;
+	}
 	/* make sure we don't go out of cache frame range */
-	if (ctime > endframe) {
+	else if (ctime > endframe) {
 		ctime = endframe;
 	}
 
@@ -1610,12 +1614,9 @@ void BKE_rigidbody_do_simulation(const struct EvaluationContext *eval_ctx, Scene
 	// RB_TODO deal with interpolated, old and baked results
 	bool can_simulate = (ctime == rbw->ltime + 1) && !(cache->flag & PTCACHE_BAKED);
 
-	if (cache->flag & PTCACHE_OUTDATED || cache->last_exact == 0) {
-		rbw->ltime = cache->startframe;
-	}
-
-	if (BKE_ptcache_read(&pid, ctime, can_simulate)) {
+	if (BKE_ptcache_read(&pid, ctime, can_simulate) == PTCACHE_READ_EXACT) {
 		BKE_ptcache_validate(cache, (int)ctime);
+		rbw->ltime = ctime;
 		return;
 	}