- Bugfix to make dupli particles for hair respect render amount.

- Allow Random and Even distribution settings to be set after hair
  is made editable, since they also affect children.

source/blender/blenkernel/BKE_anim.h

@@ -34,6 +34,8 @@
 #ifndef BKE_ANIM_H
 #define BKE_ANIM_H
 
+#define MAX_DUPLI_RECUR 4
+
 struct Path;
 struct Object;
 struct PartEff;

source/blender/blenkernel/intern/anim.c

@@ -75,8 +75,6 @@
 #include <config.h>
 #endif
 
-#define MAX_DUPLI_RECUR 4
-
 static void object_duplilist_recursive(ID *id, Object *ob, ListBase *duplilist, float par_space_mat[][4], int level);
 
 void free_path(Path *path)

source/blender/render/intern/source/convertblender.c

@@ -4090,6 +4090,39 @@ static int allow_render_dupli_instance(Render *re, DupliObject *dob, Object *obd
 	        !(re->r.mode & R_RADIO));
 }
 
+static void dupli_render_particle_set(Render *re, Object *ob, int level, int enable)
+{
+	/* ugly function, but we need to set particle systems to their render
+	 * settings before calling object_duplilist, to get render level duplis */
+	Group *group;
+	GroupObject *go;
+	ParticleSystem *psys;
+
+	if(level >= MAX_DUPLI_RECUR)
+		return;
+	
+	if(ob->transflag & OB_DUPLIPARTS) {
+		DerivedMesh *dm;
+
+		for(psys=ob->particlesystem.first; psys; psys=psys->next)
+			if(enable)
+				psys_render_set(ob, psys, re->viewmat, re->winmat, re->winx, re->winy);
+			else
+				psys_render_restore(ob, psys);
+
+		if(enable) {
+			dm = mesh_create_derived_render(ob,	CD_MASK_BAREMESH|CD_MASK_MTFACE|CD_MASK_MCOL);
+			dm->release(dm);
+		}
+	}
+
+	if(ob->dup_group==NULL) return;
+	group= ob->dup_group;
+
+	for(go= group->gobject.first; go; go= go->next)
+		dupli_render_particle_set(re, go->ob, level+1, enable);
+}
+
 static void database_init_objects(Render *re, unsigned int lay, int nolamps, int onlyselected, Object *actob, int only_verts)
 {
 	Base *base;
@@ -4125,7 +4158,10 @@ static void database_init_objects(Render *re, unsigned int lay, int nolamps, int
 				DupliObject *dob;
 				ListBase *lb;
 
+				dupli_render_particle_set(re, ob, 0, 1);
 				lb= object_duplilist(sce, ob);
+				dupli_render_particle_set(re, ob, 0, 0);
+
 				for(dob= lb->first; dob; dob= dob->next) {
 					Object *obd= dob->ob;
 					

source/blender/src/buttons_object.c

@@ -4280,7 +4280,7 @@ static void object_panel_particle_system(Object *ob)
 	short butx=0, buty=160, butw=150, buth=20;
 	char str[30];
 	static short partact;
-	short totpart;
+	short totpart, lock;
 
 	block= uiNewBlock(&curarea->uiblocks, "object_panel_particle_system", UI_EMBOSS, UI_HELV, curarea->win);
 	if(uiNewPanel(curarea, block, "Particle System", "Particle", 0, 0, 318, 204)==0) return;
@@ -4340,9 +4340,9 @@ static void object_panel_particle_system(Object *ob)
 		uiBlockEndAlign(block);
 	}
 
-	if(psys->flag & PSYS_EDITED || psys->flag & PSYS_PROTECT_CACHE) {
+	lock= (psys->flag & PSYS_EDITED || psys->flag & PSYS_PROTECT_CACHE);
+	if(lock)
 		uiSetButLock(1, "Hair is edited or cache is protected!");
-	}
 
 	uiDefButS(block, MENU, B_PARTTYPE, "Type%t|Hair%x2|Reactor%x1|Emitter%x0", 210,buty,100,buth, &part->type, 14.0, 0.0, 0, 0, "Type of particle system");
 
@@ -4388,15 +4388,20 @@ static void object_panel_particle_system(Object *ob)
 
 	uiDefBut(block, LABEL, 0, "Emit From:",							butx,buty,butw,buth, NULL, 0.0, 0, 0, 0, "");
 	uiBlockBeginAlign(block);
+
+	if(lock) uiClearButLock();
 	uiDefButBitI(block, TOG, PART_TRAND, B_PART_DISTR, "Random",	butx,(buty-=buth),butw/2,buth, &part->flag, 0, 0, 0, 0, "Emit in random order of elements");
-	
+	if(lock) uiSetButLock(1, "Hair is edited or cache is protected!");
+
 	if(part->type==PART_REACTOR)
 		uiDefButS(block, MENU, B_PART_DISTR, "Particle %x3|Volume %x2|Faces %x1|Verts %x0", butx+butw/2,buty,butw/2,buth, &part->from, 14.0, 0.0, 0, 0, "Where to emit particles from");
 	else
 		uiDefButS(block, MENU, B_PART_DISTR, "Volume %x2|Faces %x1|Verts%x0", butx+butw/2,buty,butw/2,buth, &part->from, 14.0, 0.0, 0, 0, "Where to emit particles from");
 
 	if(ELEM(part->from,PART_FROM_FACE,PART_FROM_VOLUME)) {
+		if(lock) uiClearButLock();
 		uiDefButBitI(block, TOG, PART_EDISTR, B_PART_DISTR, "Even",butx,(buty-=buth),butw/2,buth, &part->flag, 0, 0, 0, 0, "Use even distribution from faces based on face areas or edge lengths");
+		if(lock) uiSetButLock(1, "Hair is edited or cache is protected!");
 		uiDefButS(block, MENU, B_PART_DISTR, "Distribution %t|Grid%x2|Random%x1|Jittered%x0", butx+butw/2,buty,butw/2,buth, &part->distr, 14.0, 0.0, 0, 0, "How to distribute particles on selected element");
 		if(part->distr==PART_DISTR_JIT) {
 			uiDefButF(block, NUM, B_PART_DISTR, "Amount:",		butx,(buty-=buth),butw,buth, &part->jitfac, 0, 2.0, 1, 1, "Amount of jitter applied to the sampling");