Pass copy flag to modifier copyData function

This will allow modifiers to decide whether to copy or share caches between
ModifierData copies.

source/blender/blenkernel/BKE_modifier.h

@@ -162,8 +162,10 @@ typedef struct ModifierTypeInfo {
 
 	/* Copy instance data for this modifier type. Should copy all user
 	 * level settings to the target modifier.
+	 *
+	 * \param flag  Copying options (see BKE_library.h's LIB_ID_COPY_... flags for more).
 	 */
-	void (*copyData)(const struct ModifierData *md, struct ModifierData *target);
+	void (*copyData)(const struct ModifierData *md, struct ModifierData *target, const int flag);
 
 
 	/********************* Deform modifier functions *********************/ /* DEPRECATED */
@@ -387,7 +389,7 @@ void          modifier_free(struct ModifierData *md);
 
 bool          modifier_unique_name(struct ListBase *modifiers, struct ModifierData *md);
 
-void          modifier_copyData_generic(const struct ModifierData *md, struct ModifierData *target);
+void          modifier_copyData_generic(const struct ModifierData *md, struct ModifierData *target, const int flag);
 void          modifier_copyData(struct ModifierData *md, struct ModifierData *target);
 void          modifier_copyData_ex(struct ModifierData *md, struct ModifierData *target, const int flag);
 bool          modifier_dependsOnTime(struct ModifierData *md);

source/blender/blenkernel/intern/modifier.c

@@ -293,7 +293,7 @@ void modifiers_foreachTexLink(Object *ob, TexWalkFunc walk, void *userData)
 /* callback's can use this
  * to avoid copying every member.
  */
-void modifier_copyData_generic(const ModifierData *md_src, ModifierData *md_dst)
+void modifier_copyData_generic(const ModifierData *md_src, ModifierData *md_dst, const int UNUSED(flag))
 {
 	const ModifierTypeInfo *mti = modifierType_getInfo(md_src->type);
 
@@ -326,7 +326,7 @@ void modifier_copyData_ex(ModifierData *md, ModifierData *target, const int flag
 	target->flag = md->flag;
 
 	if (mti->copyData) {
-		mti->copyData(md, target);
+		mti->copyData(md, target, flag);
 	}
 
 	if ((flag & LIB_ID_CREATE_NO_USER_REFCOUNT) == 0) {

source/blender/modifiers/intern/MOD_armature.c

@@ -64,14 +64,14 @@ static void initData(ModifierData *md)
 	amd->deformflag = ARM_DEF_VGROUP;
 }
 
-static void copyData(const ModifierData *md, ModifierData *target)
+static void copyData(const ModifierData *md, ModifierData *target, const int flag)
 {
 #if 0
 	const ArmatureModifierData *amd = (const ArmatureModifierData *) md;
 #endif
 	ArmatureModifierData *tamd = (ArmatureModifierData *) target;
 
-	modifier_copyData_generic(md, target);
+	modifier_copyData_generic(md, target, flag);
 	tamd->prevCos = NULL;
 }
 

source/blender/modifiers/intern/MOD_cloth.c

@@ -155,7 +155,7 @@ static CustomDataMask requiredDataMask(Object *UNUSED(ob), ModifierData *md)
 	return dataMask;
 }
 
-static void copyData(const ModifierData *md, ModifierData *target)
+static void copyData(const ModifierData *md, ModifierData *target, const int UNUSED(flag))
 {
 	const ClothModifierData *clmd = (const ClothModifierData *) md;
 	ClothModifierData *tclmd = (ClothModifierData *) target;

source/blender/modifiers/intern/MOD_correctivesmooth.c

@@ -80,12 +80,12 @@ static void initData(ModifierData *md)
 }
 
 
-static void copyData(const ModifierData *md, ModifierData *target)
+static void copyData(const ModifierData *md, ModifierData *target, const int flag)
 {
 	const CorrectiveSmoothModifierData *csmd = (const CorrectiveSmoothModifierData *)md;
 	CorrectiveSmoothModifierData *tcsmd = (CorrectiveSmoothModifierData *)target;
 
-	modifier_copyData_generic(md, target);
+	modifier_copyData_generic(md, target, flag);
 
 	if (csmd->bind_coords) {
 		tcsmd->bind_coords = MEM_dupallocN(csmd->bind_coords);

source/blender/modifiers/intern/MOD_dynamicpaint.c

@@ -57,7 +57,7 @@ static void initData(ModifierData *md)
 	pmd->type = MOD_DYNAMICPAINT_TYPE_CANVAS;
 }
 
-static void copyData(const ModifierData *md, ModifierData *target)
+static void copyData(const ModifierData *md, ModifierData *target, const int UNUSED(flag))
 {
 	const DynamicPaintModifierData *pmd  = (const DynamicPaintModifierData *)md;
 	DynamicPaintModifierData *tpmd = (DynamicPaintModifierData *)target;

source/blender/modifiers/intern/MOD_explode.c

@@ -70,14 +70,14 @@ static void freeData(ModifierData *md)
 
 	MEM_SAFE_FREE(emd->facepa);
 }
-static void copyData(const ModifierData *md, ModifierData *target)
+static void copyData(const ModifierData *md, ModifierData *target, const int flag)
 {
 #if 0
 	const ExplodeModifierData *emd = (const ExplodeModifierData *) md;
 #endif
 	ExplodeModifierData *temd = (ExplodeModifierData *) target;
 
-	modifier_copyData_generic(md, target);
+	modifier_copyData_generic(md, target, flag);
 
 	temd->facepa = NULL;
 }

source/blender/modifiers/intern/MOD_fluidsim.c

@@ -65,7 +65,7 @@ static void freeData(ModifierData *md)
 	fluidsim_free(fluidmd);
 }
 
-static void copyData(const ModifierData *md, ModifierData *target)
+static void copyData(const ModifierData *md, ModifierData *target, const int UNUSED(flag))
 {
 	const FluidsimModifierData *fluidmd = (const FluidsimModifierData *) md;
 	FluidsimModifierData *tfluidmd = (FluidsimModifierData *) target;

source/blender/modifiers/intern/MOD_hook.c

@@ -63,12 +63,12 @@ static void initData(ModifierData *md)
 	hmd->flag = 0;
 }
 
-static void copyData(const ModifierData *md, ModifierData *target)
+static void copyData(const ModifierData *md, ModifierData *target, const int flag)
 {
 	const HookModifierData *hmd = (const HookModifierData *) md;
 	HookModifierData *thmd = (HookModifierData *) target;
 
-	modifier_copyData_generic(md, target);
+	modifier_copyData_generic(md, target, flag);
 
 	thmd->curfalloff = curvemapping_copy(hmd->curfalloff);
 

source/blender/modifiers/intern/MOD_laplaciandeform.c

@@ -704,12 +704,12 @@ static void initData(ModifierData *md)
 	lmd->flag = 0;
 }
 
-static void copyData(const ModifierData *md, ModifierData *target)
+static void copyData(const ModifierData *md, ModifierData *target, const int flag)
 {
 	const LaplacianDeformModifierData *lmd = (const LaplacianDeformModifierData *)md;
 	LaplacianDeformModifierData *tlmd = (LaplacianDeformModifierData *)target;
 
-	modifier_copyData_generic(md, target);
+	modifier_copyData_generic(md, target, flag);
 
 	tlmd->vertexco = MEM_dupallocN(lmd->vertexco);
 	tlmd->cache_system = NULL;

source/blender/modifiers/intern/MOD_meshdeform.c

@@ -81,12 +81,12 @@ static void freeData(ModifierData *md)
 	if (mmd->bindcos) MEM_freeN(mmd->bindcos);  /* deprecated */
 }
 
-static void copyData(const ModifierData *md, ModifierData *target)
+static void copyData(const ModifierData *md, ModifierData *target, const int flag)
 {
 	const MeshDeformModifierData *mmd = (const MeshDeformModifierData *) md;
 	MeshDeformModifierData *tmmd = (MeshDeformModifierData *) target;
 
-	modifier_copyData_generic(md, target);
+	modifier_copyData_generic(md, target, flag);
 
 	if (mmd->bindinfluences) tmmd->bindinfluences = MEM_dupallocN(mmd->bindinfluences);
 	if (mmd->bindoffsets) tmmd->bindoffsets = MEM_dupallocN(mmd->bindoffsets);

source/blender/modifiers/intern/MOD_meshsequencecache.c

@@ -55,14 +55,14 @@ static void initData(ModifierData *md)
 	mcmd->read_flag = MOD_MESHSEQ_READ_ALL;
 }
 
-static void copyData(const ModifierData *md, ModifierData *target)
+static void copyData(const ModifierData *md, ModifierData *target, const int flag)
 {
 #if 0
 	const MeshSeqCacheModifierData *mcmd = (const MeshSeqCacheModifierData *)md;
 #endif
 	MeshSeqCacheModifierData *tmcmd = (MeshSeqCacheModifierData *)target;
 
-	modifier_copyData_generic(md, target);
+	modifier_copyData_generic(md, target, flag);
 
 	tmcmd->reader = NULL;
 }

source/blender/modifiers/intern/MOD_ocean.c

@@ -163,7 +163,7 @@ static void freeData(ModifierData *md)
 #endif /* WITH_OCEANSIM */
 }
 
-static void copyData(const ModifierData *md, ModifierData *target)
+static void copyData(const ModifierData *md, ModifierData *target, const int UNUSED(flag))
 {
 #ifdef WITH_OCEANSIM
 #if 0

source/blender/modifiers/intern/MOD_particlesystem.c

@@ -79,14 +79,14 @@ static void freeData(ModifierData *md)
 		psmd->psys->flag |= PSYS_DELETE;
 }
 
-static void copyData(const ModifierData *md, ModifierData *target)
+static void copyData(const ModifierData *md, ModifierData *target, const int flag)
 {
 #if 0
 	const ParticleSystemModifierData *psmd = (const ParticleSystemModifierData *) md;
 #endif
 	ParticleSystemModifierData *tpsmd = (ParticleSystemModifierData *) target;
 
-	modifier_copyData_generic(md, target);
+	modifier_copyData_generic(md, target, flag);
 
 	tpsmd->mesh_final = NULL;
 	tpsmd->mesh_original = NULL;

source/blender/modifiers/intern/MOD_smoke.c

@@ -71,7 +71,7 @@ static void initData(ModifierData *md)
 	smd->time = -1;
 }
 
-static void copyData(const ModifierData *md, ModifierData *target)
+static void copyData(const ModifierData *md, ModifierData *target, const int UNUSED(flag))
 {
 	const SmokeModifierData *smd  = (const SmokeModifierData *)md;
 	SmokeModifierData *tsmd = (SmokeModifierData *)target;

source/blender/modifiers/intern/MOD_subsurf.c

@@ -65,14 +65,14 @@ static void initData(ModifierData *md)
 	smd->flags |= eSubsurfModifierFlag_SubsurfUv;
 }
 
-static void copyData(const ModifierData *md, ModifierData *target)
+static void copyData(const ModifierData *md, ModifierData *target, const int flag)
 {
 #if 0
 	const SubsurfModifierData *smd = (const SubsurfModifierData *) md;
 #endif
 	SubsurfModifierData *tsmd = (SubsurfModifierData *) target;
 
-	modifier_copyData_generic(md, target);
+	modifier_copyData_generic(md, target, flag);
 
 	tsmd->emCache = tsmd->mCache = NULL;
 }

source/blender/modifiers/intern/MOD_surfacedeform.c

@@ -136,12 +136,12 @@ static void freeData(ModifierData *md)
 	}
 }
 
-static void copyData(const ModifierData *md, ModifierData *target)
+static void copyData(const ModifierData *md, ModifierData *target, const int flag)
 {
 	const SurfaceDeformModifierData *smd = (const SurfaceDeformModifierData *)md;
 	SurfaceDeformModifierData *tsmd = (SurfaceDeformModifierData *)target;
 
-	modifier_copyData_generic(md, target);
+	modifier_copyData_generic(md, target, flag);
 
 	if (smd->verts) {
 		tsmd->verts = MEM_dupallocN(smd->verts);

source/blender/modifiers/intern/MOD_warp.c

@@ -65,12 +65,12 @@ static void initData(ModifierData *md)
 	wmd->flag = 0;
 }
 
-static void copyData(const ModifierData *md, ModifierData *target)
+static void copyData(const ModifierData *md, ModifierData *target, const int flag)
 {
 	const WarpModifierData *wmd = (const WarpModifierData *) md;
 	WarpModifierData *twmd = (WarpModifierData *) target;
 
-	modifier_copyData_generic(md, target);
+	modifier_copyData_generic(md, target, flag);
 
 	twmd->curfalloff = curvemapping_copy(wmd->curfalloff);
 }

source/blender/modifiers/intern/MOD_weightvgedit.c

@@ -81,12 +81,12 @@ static void freeData(ModifierData *md)
 	curvemapping_free(wmd->cmap_curve);
 }
 
-static void copyData(const ModifierData *md, ModifierData *target)
+static void copyData(const ModifierData *md, ModifierData *target, const int flag)
 {
 	const WeightVGEditModifierData *wmd  = (const WeightVGEditModifierData *) md;
 	WeightVGEditModifierData *twmd = (WeightVGEditModifierData *) target;
 
-	modifier_copyData_generic(md, target);
+	modifier_copyData_generic(md, target, flag);
 
 	twmd->cmap_curve = curvemapping_copy(wmd->cmap_curve);
 }