Pointcache:

*introducing unique ID's following brechts hint from ML

Enhancements resulting from this:
* multiple caches per modifier stack position

source/blender/blenkernel/BKE_object.h

@@ -115,6 +115,11 @@ void object_handle_update(struct Scene *scene, struct Object *ob);
 
 float give_timeoffset(struct Object *ob);
 int give_obdata_texspace(struct Object *ob, int **texflag, float **loc, float **size, float **rot);
+
+int object_insert_pc(struct Object *ob);
+// void object_delete_pc(struct Object *ob, int index);
+
+
 #ifdef __cplusplus
 }
 #endif

source/blender/blenkernel/intern/object.c

@@ -307,6 +307,8 @@ void free_object(Object *ob)
 	if(ob->gpulamp.first) GPU_lamp_free(ob);
 
 	free_sculptsession(&ob->sculpt);
+
+	if(ob->pc_ids.first) BLI_freelistN(&ob->pc_ids);
 }
 
 static void unlink_object__unlinkModifierLinks(void *userData, Object *ob, Object **obpoin)
@@ -1016,6 +1018,8 @@ Object *add_only_object(int type, char *name)
 	ob->fluidsimFlag = 0;
 	ob->fluidsimSettings = NULL;
 
+	ob->pc_ids.first = ob->pc_ids.last = NULL;
+
 	return ob;
 }
 
@@ -1268,7 +1272,8 @@ Object *copy_object(Object *ob)
 	obn->derivedFinal = NULL;
 
 	obn->gpulamp.first = obn->gpulamp.last = NULL;
-
+	obn->pc_ids.first = obn->pc_ids.last = NULL;
+	
 	return obn;
 }
 
@@ -2535,3 +2540,61 @@ int ray_hit_boundbox(struct BoundBox *bb, float ray_start[3], float ray_normal[3
 	
 	return result;
 }
+
+static int pc_cmp(void *a, void *b)
+{
+	LinkData *ad = a, *bd = b;
+	if((int)ad->data > (int)bd->data)
+		return 1;
+	else return 0;
+}
+
+int object_insert_pc(Object *ob) 
+{
+	LinkData *link = NULL;
+	int i = 0;
+
+	BLI_sortlist(&ob->pc_ids, pc_cmp);
+
+	for(link=ob->pc_ids.first, i = 0; link; link=link->next, i++) 
+	{
+		int index =(int)link->data;
+
+		if(i < index)
+			break;
+	}
+
+	link = MEM_callocN(sizeof(LinkData), "PCLink");
+	link->data = (void *)i;
+	BLI_addtail(&ob->pc_ids, link);
+
+	return i;
+}
+
+static int pc_findindex(ListBase *listbase, int index)
+{
+	LinkData *link= NULL;
+	int number= 0;
+	
+	if (listbase == NULL) return -1;
+	
+	link= listbase->first;
+	while (link) {
+		if ((int)link->data == index)
+			return number;
+		
+		number++;
+		link= link->next;
+	}
+	
+	return -1;
+}
+
+#if 0
+void object_delete_pc(Object *ob, int index) 
+{
+	int list_index = pc_findindex(&ob->pc_ids, index);
+	LinkData *link = BLI_findlink(&ob->pc_ids, list_index);
+	BLI_freelinkN(&ob->pc_ids, link);
+}
+#endif

source/blender/blenkernel/intern/pointcache.c

@@ -391,8 +391,6 @@ static int ptcache_totpoint_cloth(void *cloth_v)
 void BKE_ptcache_id_from_softbody(PTCacheID *pid, Object *ob, SoftBody *sb)
 {
 	ParticleSystemModifierData *psmd;
-	ModifierData *md;
-	int a;
 
 	memset(pid, 0, sizeof(PTCacheID));
 
@@ -418,16 +416,10 @@ void BKE_ptcache_id_from_softbody(PTCacheID *pid, Object *ob, SoftBody *sb)
 
 	if(sb->particles) {
 		psmd= psys_get_modifier(ob, sb->particles);
-		pid->stack_index= modifiers_indexInObject(ob, (ModifierData*)psmd);
-	}
-	else {
-		for(a=0, md=ob->modifiers.first; md; md=md->next, a++) {
-			if(md->type == eModifierType_Softbody) {
-				pid->stack_index = a;
-				break;
-			}
-		}
+		// pid->stack_index= modifiers_indexInObject(ob, (ModifierData*)psmd);  XXX TODO - get other index DG
 	}
+	else 
+		pid->stack_index = pid->cache->index;
 }
 
 void BKE_ptcache_id_from_particles(PTCacheID *pid, Object *ob, ParticleSystem *psys)
@@ -439,7 +431,7 @@ void BKE_ptcache_id_from_particles(PTCacheID *pid, Object *ob, ParticleSystem *p
 	pid->ob= ob;
 	pid->calldata= psys;
 	pid->type= PTCACHE_TYPE_PARTICLES;
-	pid->stack_index= modifiers_indexInObject(ob, (ModifierData *)psmd);
+	pid->stack_index= psys->pointcache->index;
 	pid->cache= psys->pointcache;
 	pid->cache_ptr= &psys->pointcache;
 	pid->ptcaches= &psys->ptcaches;
@@ -728,7 +720,7 @@ void BKE_ptcache_id_from_smoke(PTCacheID *pid, struct Object *ob, struct SmokeMo
 	pid->calldata= smd;
 	
 	pid->type= PTCACHE_TYPE_SMOKE_DOMAIN;
-	pid->stack_index= modifiers_indexInObject(ob, (ModifierData *)smd);
+	pid->stack_index= sds->point_cache->index;
 
 	pid->cache= sds->point_cache;
 	pid->cache_ptr= &sds->point_cache;
@@ -758,7 +750,7 @@ void BKE_ptcache_id_from_cloth(PTCacheID *pid, Object *ob, ClothModifierData *cl
 	pid->ob= ob;
 	pid->calldata= clmd;
 	pid->type= PTCACHE_TYPE_CLOTH;
-	pid->stack_index= modifiers_indexInObject(ob, (ModifierData *)clmd);
+	pid->stack_index= clmd->point_cache->index;
 	pid->cache= clmd->point_cache;
 	pid->cache_ptr= &clmd->point_cache;
 	pid->ptcaches= &clmd->ptcaches;
@@ -901,6 +893,10 @@ static int BKE_ptcache_id_filename(PTCacheID *pid, char *filename, int cfra, sho
 	}
 
 	if (do_ext) {
+
+		if(pid->cache->index < 0)
+			pid->cache->index =  pid->stack_index = object_insert_pc(pid->ob);
+
 		if(pid->cache->flag & PTCACHE_EXTERNAL) {
 			if(pid->cache->index >= 0)
 				snprintf(newname, MAX_PTCACHE_FILE, "_%06d_%02d"PTCACHE_EXT, cfra, pid->stack_index); /* always 6 chars */
@@ -1952,6 +1948,7 @@ PointCache *BKE_ptcache_add(ListBase *ptcaches)
 	cache->startframe= 1;
 	cache->endframe= 250;
 	cache->step= 10;
+	cache->index = -1;
 
 	BLI_addtail(ptcaches, cache);
 

source/blender/blenloader/intern/readfile.c

@@ -3993,6 +3993,7 @@ static void direct_link_object(FileData *fd, Object *ob)
 	ob->derivedDeform= NULL;
 	ob->derivedFinal= NULL;
 	ob->gpulamp.first= ob->gpulamp.last= NULL;
+	link_list(fd, &ob->pc_ids);
 
 	if(ob->sculpt)
 		ob->sculpt= MEM_callocN(sizeof(SculptSession), "reload sculpt session");

source/blender/editors/space_view3d/drawvolume.c

@@ -236,8 +236,7 @@ void draw_volume(Scene *scene, ARegion *ar, View3D *v3d, Base *base, GPUTexture
 
 	GPU_texture_bind(tex, 0);
 
-	if (!GLEW_ARB_texture_non_power_of_two) 
-	{
+	if (!GLEW_ARB_texture_non_power_of_two) {
 		cor[0] = (float)res[0]/(float)larger_pow2(res[0]);
 		cor[1] = (float)res[1]/(float)larger_pow2(res[1]);
 		cor[2] = (float)res[2]/(float)larger_pow2(res[2]);

source/blender/gpu/intern/gpu_extensions.c

@@ -337,8 +337,7 @@ GPUTexture *GPU_texture_create_3D(int w, int h, int depth, float *fpixels)
 		return NULL;
 	}
 
-	if (!GLEW_ARB_texture_non_power_of_two) 
-	{
+	if (!GLEW_ARB_texture_non_power_of_two) {
 		tex->w = larger_pow2(tex->w);
 		tex->h = larger_pow2(tex->h);
 		tex->depth = larger_pow2(tex->depth);

source/blender/makesdna/DNA_object_types.h

@@ -237,6 +237,7 @@ typedef struct Object {
 	int pad2;
 
 	ListBase gpulamp;		/* runtime, for lamps only */
+	ListBase pc_ids;
 } Object;
 
 /* Warning, this is not used anymore because hooks are now modifiers */