diff --git a/intern/cycles/device/opencl/opencl_base.cpp b/intern/cycles/device/opencl/opencl_base.cpp
index 486ef89d22e..6747a8a83ac 100644
--- a/intern/cycles/device/opencl/opencl_base.cpp
+++ b/intern/cycles/device/opencl/opencl_base.cpp
@@ -1107,7 +1107,7 @@ void OpenCLDeviceBase::shader(DeviceTask& task)
 	if(task.shader_eval_type >= SHADER_EVAL_BAKE) {
 		kernel = base_program(ustring("bake"));
 	}
-	else if(task.shader_eval_type >= SHADER_EVAL_DISPLACE) {
+	else if(task.shader_eval_type == SHADER_EVAL_DISPLACE) {
 		kernel = base_program(ustring("displace"));
 	}
 	else {
diff --git a/source/blender/blenkernel/BKE_fcurve.h b/source/blender/blenkernel/BKE_fcurve.h
index b38f1299763..09f5ecce050 100644
--- a/source/blender/blenkernel/BKE_fcurve.h
+++ b/source/blender/blenkernel/BKE_fcurve.h
@@ -188,7 +188,7 @@ const FModifierTypeInfo *get_fmodifier_typeinfo(const int type);
 
 /* ---------------------- */
 
-struct FModifier *add_fmodifier(ListBase *modifiers, int type);
+struct FModifier *add_fmodifier(ListBase *modifiers, int type, struct FCurve *owner_fcu);
 struct FModifier *copy_fmodifier(const struct FModifier *src);
 void copy_fmodifiers(ListBase *dst, const ListBase *src);
 bool remove_fmodifier(ListBase *modifiers, struct FModifier *fcm);
@@ -266,6 +266,9 @@ bool fcurve_are_keyframes_usable(struct FCurve *fcu);
 bool fcurve_is_keyframable(struct FCurve *fcu);
 bool BKE_fcurve_is_protected(struct FCurve *fcu);
 
+/* The curve is an infinite cycle via Cycles modifier */
+bool BKE_fcurve_is_cyclic(struct FCurve *fcu);
+
 /* -------- Curve Sanity --------  */
 
 void calchandles_fcurve(struct FCurve *fcu);
diff --git a/source/blender/blenkernel/intern/CCGSubSurf_opensubdiv.c b/source/blender/blenkernel/intern/CCGSubSurf_opensubdiv.c
index 9c86a22a1f8..c26112d3724 100644
--- a/source/blender/blenkernel/intern/CCGSubSurf_opensubdiv.c
+++ b/source/blender/blenkernel/intern/CCGSubSurf_opensubdiv.c
@@ -282,6 +282,7 @@ bool ccgSubSurf_prepareGLMesh(CCGSubSurf *ss,
 		                      sizeof(GLfloat) * 6, (float *)12);
 
 		glBindBuffer(GL_ARRAY_BUFFER, 0);
+		glBindVertexArray(0);
 	}
 	else if (ss->osd_coarse_coords_invalid) {
 		ccgSubSurf__updateGLMeshCoords(ss);
@@ -299,6 +300,7 @@ void ccgSubSurf_drawGLMesh(CCGSubSurf *ss, bool fill_quads,
                            int start_partition, int num_partitions)
 {
 	if (LIKELY(ss->osd_mesh != NULL)) {
+		glBindVertexArray(ss->osd_vao);
 		glBindBuffer(GL_ELEMENT_ARRAY_BUFFER,
 		             openSubdiv_getOsdGLMeshPatchIndexBuffer(ss->osd_mesh));
 
diff --git a/source/blender/blenkernel/intern/fcurve.c b/source/blender/blenkernel/intern/fcurve.c
index aee465ad0a0..103f23a2c18 100644
--- a/source/blender/blenkernel/intern/fcurve.c
+++ b/source/blender/blenkernel/intern/fcurve.c
@@ -881,6 +881,46 @@ void fcurve_store_samples(FCurve *fcu, void *data, int start, int end, FcuSample
  * that the handles are correctly 
  */
 
+/* Checks if the F-Curve has a Cycles modifier with simple settings that warrant transition smoothing */
+bool BKE_fcurve_is_cyclic(FCurve *fcu)
+{
+	FModifier *fcm = fcu->modifiers.first;
+
+	if (!fcm || fcm->type != FMODIFIER_TYPE_CYCLES)
+		return false;
+
+	if (fcm->flag & (FMODIFIER_FLAG_DISABLED | FMODIFIER_FLAG_MUTED))
+		return false;
+
+	if (fcm->flag & (FMODIFIER_FLAG_RANGERESTRICT | FMODIFIER_FLAG_USEINFLUENCE))
+		return false;
+
+	FMod_Cycles *data = (FMod_Cycles*)fcm->data;
+
+	return data && data->after_cycles == 0 && data->before_cycles == 0 &&
+	    ELEM(data->before_mode, FCM_EXTRAPOLATE_CYCLIC, FCM_EXTRAPOLATE_CYCLIC_OFFSET) &&
+	    ELEM(data->after_mode, FCM_EXTRAPOLATE_CYCLIC, FCM_EXTRAPOLATE_CYCLIC_OFFSET);
+}
+
+/* Shifts 'in' by the difference in coordinates between 'to' and 'from', using 'out' as the output buffer.
+ * When 'to' and 'from' are end points of the loop, this moves the 'in' point one loop cycle.
+ */
+static BezTriple *cycle_offset_triple(bool cycle, BezTriple *out, const BezTriple *in, const BezTriple *from, const BezTriple *to)
+{
+	if (!cycle)
+		return NULL;
+
+	memcpy(out, in, sizeof(BezTriple));
+
+	float delta[3];
+	sub_v3_v3v3(delta, to->vec[1], from->vec[1]);
+
+	for (int i = 0; i < 3; i++)
+		add_v3_v3(out->vec[i], delta);
+
+	return out;
+}
+
 /* This function recalculates the handles of an F-Curve 
  * If the BezTriples have been rearranged, sort them first before using this.
  */
@@ -896,10 +936,16 @@ void calchandles_fcurve(FCurve *fcu)
 	 */
 	if (ELEM(NULL, fcu, fcu->bezt) || (a < 2) /*|| ELEM(fcu->ipo, BEZT_IPO_CONST, BEZT_IPO_LIN)*/) 
 		return;
-	
+
+	/* if the first modifier is Cycles, smooth the curve through the cycle */
+	BezTriple *first = &fcu->bezt[0], *last = &fcu->bezt[fcu->totvert-1];
+	BezTriple tmp;
+
+	bool cycle = BKE_fcurve_is_cyclic(fcu) && BEZT_IS_AUTOH(first) && BEZT_IS_AUTOH(last);
+
 	/* get initial pointers */
 	bezt = fcu->bezt;
-	prev = NULL;
+	prev = cycle_offset_triple(cycle, &tmp, &fcu->bezt[fcu->totvert-2], last, first);
 	next = (bezt + 1);
 	
 	/* loop over all beztriples, adjusting handles */
@@ -912,7 +958,7 @@ void calchandles_fcurve(FCurve *fcu)
 		BKE_nurb_handle_calc(bezt, prev, next, true);
 		
 		/* for automatic ease in and out */
-		if (ELEM(bezt->h1, HD_AUTO, HD_AUTO_ANIM) && ELEM(bezt->h2, HD_AUTO, HD_AUTO_ANIM)) {
+		if (BEZT_IS_AUTOH(bezt) && !cycle) {
 			/* only do this on first or last beztriple */
 			if ((a == 0) || (a == fcu->totvert - 1)) {
 				/* set both handles to have same horizontal value as keyframe */
@@ -924,8 +970,14 @@ void calchandles_fcurve(FCurve *fcu)
 		
 		/* advance pointers for next iteration */
 		prev = bezt;
-		if (a == 1) next = NULL;
-		else next++;
+
+		if (a == 1) {
+			next = cycle_offset_triple(cycle, &tmp, &fcu->bezt[1], first, last);
+		}
+		else {
+			next++;
+		}
+
 		bezt++;
 	}
 }
diff --git a/source/blender/blenkernel/intern/fmodifier.c b/source/blender/blenkernel/intern/fmodifier.c
index f1732ee7a9a..f1834bdf8a6 100644
--- a/source/blender/blenkernel/intern/fmodifier.c
+++ b/source/blender/blenkernel/intern/fmodifier.c
@@ -1077,7 +1077,7 @@ const FModifierTypeInfo *fmodifier_get_typeinfo(const FModifier *fcm)
 /* API --------------------------- */
 
 /* Add a new F-Curve Modifier to the given F-Curve of a certain type */
-FModifier *add_fmodifier(ListBase *modifiers, int type)
+FModifier *add_fmodifier(ListBase *modifiers, int type, FCurve *owner_fcu)
 {
 	const FModifierTypeInfo *fmi = get_fmodifier_typeinfo(type);
 	FModifier *fcm;
@@ -1098,6 +1098,7 @@ FModifier *add_fmodifier(ListBase *modifiers, int type)
 	fcm = MEM_callocN(sizeof(FModifier), "F-Curve Modifier");
 	fcm->type = type;
 	fcm->flag = FMODIFIER_FLAG_EXPANDED;
+	fcm->curve = owner_fcu;
 	fcm->influence = 1.0f;
 	BLI_addtail(modifiers, fcm);
 	
@@ -1111,6 +1112,10 @@ FModifier *add_fmodifier(ListBase *modifiers, int type)
 	/* init custom settings if necessary */
 	if (fmi->new_data)
 		fmi->new_data(fcm->data);
+
+	/* update the fcurve if the Cycles modifier is added */
+	if ((owner_fcu) && (type == FMODIFIER_TYPE_CYCLES))
+		calchandles_fcurve(owner_fcu);
 		
 	/* return modifier for further editing */
 	return fcm;
@@ -1129,6 +1134,7 @@ FModifier *copy_fmodifier(const FModifier *src)
 	/* copy the base data, clearing the links */
 	dst = MEM_dupallocN(src);
 	dst->next = dst->prev = NULL;
+	dst->curve = NULL;
 	
 	/* make a new copy of the F-Modifier's data */
 	dst->data = MEM_dupallocN(src->data);
@@ -1157,6 +1163,7 @@ void copy_fmodifiers(ListBase *dst, const ListBase *src)
 		
 		/* make a new copy of the F-Modifier's data */
 		fcm->data = MEM_dupallocN(fcm->data);
+		fcm->curve = NULL;
 		
 		/* only do specific constraints if required */
 		if (fmi && fmi->copy_data)
@@ -1173,6 +1180,9 @@ bool remove_fmodifier(ListBase *modifiers, FModifier *fcm)
 	if (fcm == NULL)
 		return false;
 	
+	/* removing the cycles modifier requires a handle update */
+	FCurve *update_fcu = (fcm->type == FMODIFIER_TYPE_CYCLES) ? fcm->curve : NULL;
+
 	/* free modifier's special data (stored inside fcm->data) */
 	if (fcm->data) {
 		if (fmi && fmi->free_data)
@@ -1185,6 +1195,11 @@ bool remove_fmodifier(ListBase *modifiers, FModifier *fcm)
 	/* remove modifier from stack */
 	if (modifiers) {
 		BLI_freelinkN(modifiers, fcm);
+
+		/* update the fcurve if the Cycles modifier is removed */
+		if (update_fcu)
+			calchandles_fcurve(update_fcu);
+
 		return true;
 	}
 	else {
diff --git a/source/blender/blenkernel/intern/ipo.c b/source/blender/blenkernel/intern/ipo.c
index f3a85dcee2b..90247441631 100644
--- a/source/blender/blenkernel/intern/ipo.c
+++ b/source/blender/blenkernel/intern/ipo.c
@@ -1192,7 +1192,7 @@ static void icu_to_fcurves(ID *id, ListBase *groups, ListBase *list, IpoCurve *i
 			/* Add a new FModifier (Cyclic) instead of setting extend value 
 			 * as that's the new equivalent of that option.
 			 */
-			FModifier *fcm = add_fmodifier(&fcu->modifiers, FMODIFIER_TYPE_CYCLES);
+			FModifier *fcm = add_fmodifier(&fcu->modifiers, FMODIFIER_TYPE_CYCLES, fcu);
 			FMod_Cycles *data = (FMod_Cycles *)fcm->data;
 			
 			/* if 'offset' one is in use, set appropriate settings */
diff --git a/source/blender/blenloader/intern/readfile.c b/source/blender/blenloader/intern/readfile.c
index a421abd852d..e6d534d18c0 100644
--- a/source/blender/blenloader/intern/readfile.c
+++ b/source/blender/blenloader/intern/readfile.c
@@ -2453,13 +2453,14 @@ static void lib_link_fcurves(FileData *fd, ID *id, ListBase *list)
 
 
 /* NOTE: this assumes that link_list has already been called on the list */
-static void direct_link_fmodifiers(FileData *fd, ListBase *list)
+static void direct_link_fmodifiers(FileData *fd, ListBase *list, FCurve *curve)
 {
 	FModifier *fcm;
 	
 	for (fcm = list->first; fcm; fcm = fcm->next) {
 		/* relink general data */
 		fcm->data  = newdataadr(fd, fcm->data);
+		fcm->curve = curve;
 		
 		/* do relinking of data for specific types */
 		switch (fcm->type) {
@@ -2549,7 +2550,7 @@ static void direct_link_fcurves(FileData *fd, ListBase *list)
 		
 		/* modifiers */
 		link_list(fd, &fcu->modifiers);
-		direct_link_fmodifiers(fd, &fcu->modifiers);
+		direct_link_fmodifiers(fd, &fcu->modifiers, fcu);
 	}
 }
 
@@ -2654,7 +2655,7 @@ static void direct_link_nladata_strips(FileData *fd, ListBase *list)
 		
 		/* strip's F-Modifiers */
 		link_list(fd, &strip->modifiers);
-		direct_link_fmodifiers(fd, &strip->modifiers);
+		direct_link_fmodifiers(fd, &strip->modifiers, NULL);
 	}
 }
 
diff --git a/source/blender/editors/animation/drivers.c b/source/blender/editors/animation/drivers.c
index 1a3d82e5002..e686e278740 100644
--- a/source/blender/editors/animation/drivers.c
+++ b/source/blender/editors/animation/drivers.c
@@ -125,7 +125,7 @@ FCurve *verify_driver_fcurve(ID *id, const char rna_path[], const int array_inde
 				 * Create FModifier so that old scripts won't break
 				 * for now before 2.7 series -- (September 4, 2013)
 				 */
-				add_fmodifier(&fcu->modifiers, FMODIFIER_TYPE_GENERATOR);
+				add_fmodifier(&fcu->modifiers, FMODIFIER_TYPE_GENERATOR, fcu);
 			}
 			else {
 				/* add 2 keyframes so that user has something to work with 
diff --git a/source/blender/editors/animation/fmodifier_ui.c b/source/blender/editors/animation/fmodifier_ui.c
index 6bb73416fec..8d77460e197 100644
--- a/source/blender/editors/animation/fmodifier_ui.c
+++ b/source/blender/editors/animation/fmodifier_ui.c
@@ -736,7 +736,7 @@ bool ANIM_fmodifiers_copy_to_buf(ListBase *modifiers, bool active)
 /* 'Paste' the F-Modifier(s) from the buffer to the specified list 
  *	- replace: free all the existing modifiers to leave only the pasted ones 
  */
-bool ANIM_fmodifiers_paste_from_buf(ListBase *modifiers, bool replace)
+bool ANIM_fmodifiers_paste_from_buf(ListBase *modifiers, bool replace, FCurve *curve)
 {
 	FModifier *fcm;
 	bool ok = false;
@@ -745,6 +745,8 @@ bool ANIM_fmodifiers_paste_from_buf(ListBase *modifiers, bool replace)
 	if (modifiers == NULL)
 		return 0;
 		
+	bool was_cyclic = curve && BKE_fcurve_is_cyclic(curve);
+
 	/* if replacing the list, free the existing modifiers */
 	if (replace)
 		free_fmodifiers(modifiers);
@@ -753,6 +755,8 @@ bool ANIM_fmodifiers_paste_from_buf(ListBase *modifiers, bool replace)
 	for (fcm = fmodifier_copypaste_buf.first; fcm; fcm = fcm->next) {
 		/* make a copy of it */
 		FModifier *fcmN = copy_fmodifier(fcm);
+
+		fcmN->curve = curve;
 		
 		/* make sure the new one isn't active, otherwise the list may get several actives */
 		fcmN->flag &= ~FMODIFIER_FLAG_ACTIVE;
@@ -762,6 +766,10 @@ bool ANIM_fmodifiers_paste_from_buf(ListBase *modifiers, bool replace)
 		ok = 1;
 	}
 	
+	/* adding or removing the Cycles modifier requires an update to handles */
+	if (curve && BKE_fcurve_is_cyclic(curve) != was_cyclic)
+		calchandles_fcurve(curve);
+
 	/* did we succeed? */
 	return ok;
 }
diff --git a/source/blender/editors/include/ED_anim_api.h b/source/blender/editors/include/ED_anim_api.h
index 797262c685b..77b2ce435c2 100644
--- a/source/blender/editors/include/ED_anim_api.h
+++ b/source/blender/editors/include/ED_anim_api.h
@@ -573,7 +573,7 @@ bool ANIM_fmodifiers_copy_to_buf(ListBase *modifiers, bool active);
 /* 'Paste' the F-Modifier(s) from the buffer to the specified list 
  *	- replace: free all the existing modifiers to leave only the pasted ones 
  */
-bool ANIM_fmodifiers_paste_from_buf(ListBase *modifiers, bool replace);
+bool ANIM_fmodifiers_paste_from_buf(ListBase *modifiers, bool replace, struct FCurve *curve);
 
 /* ************************************************* */
 /* ASSORTED TOOLS */
diff --git a/source/blender/editors/object/object_constraint.c b/source/blender/editors/object/object_constraint.c
index 4e578906e07..f9401433362 100644
--- a/source/blender/editors/object/object_constraint.c
+++ b/source/blender/editors/object/object_constraint.c
@@ -1031,7 +1031,7 @@ static int followpath_path_animate_exec(bContext *C, wmOperator *op)
 	 * and define basic slope of this curve based on the properties
 	 */
 	if (!fcu->bezt && !fcu->fpt && !fcu->modifiers.first) {
-		FModifier *fcm = add_fmodifier(&fcu->modifiers, FMODIFIER_TYPE_GENERATOR);
+		FModifier *fcm = add_fmodifier(&fcu->modifiers, FMODIFIER_TYPE_GENERATOR, fcu);
 		FMod_Generator *gen = fcm->data;
 		
 		/* Assume that we have the following equation:
diff --git a/source/blender/editors/object/object_relations.c b/source/blender/editors/object/object_relations.c
index c255ce4a45a..34cef2aa588 100644
--- a/source/blender/editors/object/object_relations.c
+++ b/source/blender/editors/object/object_relations.c
@@ -650,7 +650,7 @@ bool ED_object_parent_set(ReportList *reports, const bContext *C, Scene *scene,
 
 				/* setup dummy 'generator' modifier here to get 1-1 correspondence still working */
 				if (!fcu->bezt && !fcu->fpt && !fcu->modifiers.first)
-					add_fmodifier(&fcu->modifiers, FMODIFIER_TYPE_GENERATOR);
+					add_fmodifier(&fcu->modifiers, FMODIFIER_TYPE_GENERATOR, fcu);
 			}
 
 			/* fall back on regular parenting now (for follow only) */
diff --git a/source/blender/editors/space_action/action_edit.c b/source/blender/editors/space_action/action_edit.c
index a9920389980..2df5aa29e9a 100644
--- a/source/blender/editors/space_action/action_edit.c
+++ b/source/blender/editors/space_action/action_edit.c
@@ -1146,7 +1146,7 @@ static void setexpo_action_keys(bAnimContext *ac, short mode)
 				/* only add if one doesn't exist */
 				if (list_has_suitable_fmodifier(&fcu->modifiers, FMODIFIER_TYPE_CYCLES, -1) == 0) {
 					/* TODO: add some more preset versions which set different extrapolation options? */
-					add_fmodifier(&fcu->modifiers, FMODIFIER_TYPE_CYCLES);
+					add_fmodifier(&fcu->modifiers, FMODIFIER_TYPE_CYCLES, fcu);
 				}
 			}
 			else if (mode == CLEAR_CYCLIC_EXPO) {
diff --git a/source/blender/editors/space_graph/graph_edit.c b/source/blender/editors/space_graph/graph_edit.c
index 12d872a3c8a..d0ab12b16a3 100644
--- a/source/blender/editors/space_graph/graph_edit.c
+++ b/source/blender/editors/space_graph/graph_edit.c
@@ -1505,7 +1505,7 @@ static void setexpo_graph_keys(bAnimContext *ac, short mode)
 				/* only add if one doesn't exist */
 				if (list_has_suitable_fmodifier(&fcu->modifiers, FMODIFIER_TYPE_CYCLES, -1) == 0) {
 					// TODO: add some more preset versions which set different extrapolation options?
-					add_fmodifier(&fcu->modifiers, FMODIFIER_TYPE_CYCLES);
+					add_fmodifier(&fcu->modifiers, FMODIFIER_TYPE_CYCLES, fcu);
 				}
 			}
 			else if (mode == CLEAR_CYCLIC_EXPO) {
@@ -2447,7 +2447,7 @@ static int graph_fmodifier_add_exec(bContext *C, wmOperator *op)
 		FModifier *fcm;
 		
 		/* add F-Modifier of specified type to active F-Curve, and make it the active one */
-		fcm = add_fmodifier(&fcu->modifiers, type);
+		fcm = add_fmodifier(&fcu->modifiers, type, fcu);
 		if (fcm) {
 			set_active_fmodifier(&fcu->modifiers, fcm);
 		}
@@ -2583,7 +2583,7 @@ static int graph_fmodifier_paste_exec(bContext *C, wmOperator *op)
 		FCurve *fcu = (FCurve *)ale->data;
 		int tot;
 		
-		tot = ANIM_fmodifiers_paste_from_buf(&fcu->modifiers, replace);
+		tot = ANIM_fmodifiers_paste_from_buf(&fcu->modifiers, replace, fcu);
 		
 		if (tot) {
 			ale->update |= ANIM_UPDATE_DEPS;
diff --git a/source/blender/editors/space_nla/nla_edit.c b/source/blender/editors/space_nla/nla_edit.c
index f7f7c82171d..a6f76e1d556 100644
--- a/source/blender/editors/space_nla/nla_edit.c
+++ b/source/blender/editors/space_nla/nla_edit.c
@@ -2316,7 +2316,7 @@ static int nla_fmodifier_add_exec(bContext *C, wmOperator *op)
 				continue;
 			
 			/* add F-Modifier of specified type to selected, and make it the active one */
-			fcm = add_fmodifier(&strip->modifiers, type);
+			fcm = add_fmodifier(&strip->modifiers, type, NULL);
 			
 			if (fcm) {
 				set_active_fmodifier(&strip->modifiers, fcm);
@@ -2470,7 +2470,7 @@ static int nla_fmodifier_paste_exec(bContext *C, wmOperator *op)
 			}
 			
 			/* paste FModifiers from buffer */
-			ok += ANIM_fmodifiers_paste_from_buf(&strip->modifiers, replace);
+			ok += ANIM_fmodifiers_paste_from_buf(&strip->modifiers, replace, NULL);
 			ale->update |= ANIM_UPDATE_DEPS;
 		}
 	}
diff --git a/source/blender/makesdna/DNA_anim_types.h b/source/blender/makesdna/DNA_anim_types.h
index 935a893f689..977cd2347ad 100644
--- a/source/blender/makesdna/DNA_anim_types.h
+++ b/source/blender/makesdna/DNA_anim_types.h
@@ -52,6 +52,7 @@ extern "C" {
 typedef struct FModifier {
 	struct FModifier *next, *prev;
 	
+	struct FCurve *curve;  /* containing curve, only used for updates to CYCLES */
 	void *data;			/* pointer to modifier data */
 	
 	char name[64];		/* user-defined description for the modifier - MAX_ID_NAME-2 */
diff --git a/source/blender/makesdna/DNA_curve_types.h b/source/blender/makesdna/DNA_curve_types.h
index e598c32173c..ea446552874 100644
--- a/source/blender/makesdna/DNA_curve_types.h
+++ b/source/blender/makesdna/DNA_curve_types.h
@@ -437,6 +437,8 @@ typedef enum eBezTriple_KeyframeType {
 #define BEZT_SEL_ALL(bezt)    { (bezt)->f1 |=  SELECT; (bezt)->f2 |=  SELECT; (bezt)->f3 |=  SELECT; } ((void)0)
 #define BEZT_DESEL_ALL(bezt)  { (bezt)->f1 &= ~SELECT; (bezt)->f2 &= ~SELECT; (bezt)->f3 &= ~SELECT; } ((void)0)
 
+#define BEZT_IS_AUTOH(bezt)   (ELEM((bezt)->h1, HD_AUTO, HD_AUTO_ANIM) && ELEM((bezt)->h2, HD_AUTO, HD_AUTO_ANIM))
+
 /* *************** CHARINFO **************** */
 
 /* CharInfo.flag */
diff --git a/source/blender/makesrna/intern/rna_fcurve.c b/source/blender/makesrna/intern/rna_fcurve.c
index e951e15ca8c..90c4ec53b45 100644
--- a/source/blender/makesrna/intern/rna_fcurve.c
+++ b/source/blender/makesrna/intern/rna_fcurve.c
@@ -497,7 +497,7 @@ static void rna_FCurve_active_modifier_set(PointerRNA *ptr, PointerRNA value)
 
 static FModifier *rna_FCurve_modifiers_new(FCurve *fcu, int type)
 {
-	return add_fmodifier(&fcu->modifiers, type);
+	return add_fmodifier(&fcu->modifiers, type, fcu);
 }
 
 static void rna_FCurve_modifiers_remove(FCurve *fcu, ReportList *reports, PointerRNA *fcm_ptr)
@@ -588,11 +588,15 @@ static void rna_FModifier_blending_range(PointerRNA *ptr, float *min, float *max
 static void rna_FModifier_update(Main *UNUSED(bmain), Scene *UNUSED(scene), PointerRNA *ptr)
 {
 	ID *id = ptr->id.data;
+	FModifier *fcm = (FModifier *)ptr->data;
 	AnimData *adt = BKE_animdata_from_id(id);
 	DEG_id_tag_update(id, (GS(id->name) == ID_OB) ? OB_RECALC_OB : OB_RECALC_DATA);
 	if (adt != NULL) {
 		adt->recalc |= ADT_RECALC_ANIM;
 	}
+	if (fcm->curve && fcm->type == FMODIFIER_TYPE_CYCLES) {
+		calchandles_fcurve(fcm->curve);
+	}
 }
 
 static void rna_FModifier_verify_data_update(Main *bmain, Scene *scene, PointerRNA *ptr)
diff --git a/source/blender/python/generic/bgl.c b/source/blender/python/generic/bgl.c
index 5c938ef2ee3..9672b824843 100644
--- a/source/blender/python/generic/bgl.c
+++ b/source/blender/python/generic/bgl.c
@@ -476,34 +476,29 @@ int BGL_typeSize(int type)
 	return -1;
 }
 
-static int gl_buffer_type_from_py_format_char(char *typestr)
+static int gl_buffer_type_from_py_buffer(Py_buffer *pybuffer)
 {
+	char *typestr = pybuffer->format;
+	Py_ssize_t itemsize = pybuffer->itemsize;
+
 	if (ELEM(typestr[0], '<', '>', '|')) {
 		typestr += 1;
 	}
-	char format = typestr[0];
-	char byte_num = typestr[1];
 
-	switch (format) {
+	switch (typestr[0]) {
 		case 't':
 		case 'b':
 		case 'h':
-			if (!byte_num) return GL_BYTE;
-			ATTR_FALLTHROUGH;
 		case 'i':
-			if (!byte_num) return GL_SHORT;
-			ATTR_FALLTHROUGH;
 		case 'l':
-			if (!byte_num || byte_num == '4') return GL_INT;
-			if (byte_num == '1') return GL_BYTE;
-			if (byte_num == '2') return GL_SHORT;
+			if (itemsize == 1) return GL_BYTE;
+			if (itemsize == 2) return GL_SHORT;
+			if (itemsize == 4) return GL_INT;
 			break;
 		case 'f':
-			if (!byte_num) return GL_FLOAT;
-			ATTR_FALLTHROUGH;
 		case 'd':
-			if (!byte_num || byte_num == '8') return GL_DOUBLE;
-			if (byte_num == '4') return GL_FLOAT;
+			if (itemsize == 4) return GL_FLOAT;
+			if (itemsize == 8) return GL_DOUBLE;
 			break;
 	}
 	return -1; /* UNKNOWN */
@@ -801,7 +796,7 @@ static PyObject *Buffer_new(PyTypeObject *UNUSED(type), PyObject *args, PyObject
 			return NULL;
 		}
 
-		if (type != gl_buffer_type_from_py_format_char(pybuffer.format)) {
+		if (type != gl_buffer_type_from_py_buffer(&pybuffer)) {
 			PyErr_Format(PyExc_TypeError,
 			             "`GL_TYPE` and `typestr` of object with buffer interface do not match. '%s'", pybuffer.format);
 		}
diff --git a/tests/python/bl_alembic_import_test.py b/tests/python/bl_alembic_import_test.py
index e64da2fe540..5062e8ff073 100644
--- a/tests/python/bl_alembic_import_test.py
+++ b/tests/python/bl_alembic_import_test.py
@@ -222,9 +222,9 @@ class VertexColourImportTest(AbstractAlembicTest):
         layer = ob.data.vertex_colors['Cf']  # MeshLoopColorLayer
 
         # Test some known-good values.
-        self.assertAlmostEqualFloatArray(layer.data[0].color, (0, 0, 0))
-        self.assertAlmostEqualFloatArray(layer.data[98].color, (0.9019607, 0.4745098, 0.2666666))
-        self.assertAlmostEqualFloatArray(layer.data[99].color, (0.8941176, 0.4705882, 0.2627451))
+        self.assertAlmostEqualFloatArray(layer.data[0].color, (0, 0, 0, 1.0))
+        self.assertAlmostEqualFloatArray(layer.data[98].color, (0.9019607, 0.4745098, 0.2666666, 1.0))
+        self.assertAlmostEqualFloatArray(layer.data[99].color, (0.8941176, 0.4705882, 0.2627451, 1.0))
 
     def test_import_from_blender(self):
         # Blender saved per-vertex, and as RGBA.
@@ -237,9 +237,9 @@ class VertexColourImportTest(AbstractAlembicTest):
         layer = ob.data.vertex_colors['Cf']  # MeshLoopColorLayer
 
         # Test some known-good values.
-        self.assertAlmostEqualFloatArray(layer.data[0].color, (1.0, 0.0156862, 0.3607843))
-        self.assertAlmostEqualFloatArray(layer.data[98].color, (0.0941176, 0.1215686, 0.9137254))
-        self.assertAlmostEqualFloatArray(layer.data[99].color, (0.1294117, 0.3529411, 0.7529411))
+        self.assertAlmostEqualFloatArray(layer.data[0].color, (1.0, 0.0156862, 0.3607843, 1.0))
+        self.assertAlmostEqualFloatArray(layer.data[98].color, (0.0941176, 0.1215686, 0.9137254, 1.0))
+        self.assertAlmostEqualFloatArray(layer.data[99].color, (0.1294117, 0.3529411, 0.7529411, 1.0))
 
 
 def main():