From ad5579ec92796d31d06f2d5287f2356efadb1788 Mon Sep 17 00:00:00 2001
From: Brecht Van Lommel <brechtvanlommel@pandora.be>
Date: Wed, 7 May 2008 16:31:49 +0000
Subject: [PATCH] Fix for bug #9676: added warning that particles on multires
 are not supported on anything else than the first level.

---
 source/blender/blenkernel/intern/modifier.c | 9 +++++++++
 source/blender/blenkernel/intern/particle.c | 7 +++++++
 2 files changed, 16 insertions(+)

diff --git a/source/blender/blenkernel/intern/modifier.c b/source/blender/blenkernel/intern/modifier.c
index ca95d9edc06..2a8ba878c41 100644
--- a/source/blender/blenkernel/intern/modifier.c
+++ b/source/blender/blenkernel/intern/modifier.c
@@ -5515,6 +5515,7 @@ static void particleSystemModifier_deformVerts(
 	DerivedMesh *dm = derivedData;
 	ParticleSystemModifierData *psmd= (ParticleSystemModifierData*) md;
 	ParticleSystem * psys=0;
+	Mesh *me;
 	int needsFree=0;
 
 	if(ob->particlesystem.first)
@@ -5522,6 +5523,14 @@ static void particleSystemModifier_deformVerts(
 	else
 		return;
 	
+	/* multires check */
+	if(ob->type == OB_MESH) {
+		me= (Mesh*)ob->data;
+		if(me->mr && me->mr->current != 1)
+			modifier_setError(md,
+				"Particles only supported on first multires level.");
+	}
+
 	if(!psys_check_enabled(ob, psys))
 		return;
 
diff --git a/source/blender/blenkernel/intern/particle.c b/source/blender/blenkernel/intern/particle.c
index 1eb47fa3da0..2aa0d0ad0b8 100644
--- a/source/blender/blenkernel/intern/particle.c
+++ b/source/blender/blenkernel/intern/particle.c
@@ -250,10 +250,17 @@ int psys_in_edit_mode(ParticleSystem *psys)
 int psys_check_enabled(Object *ob, ParticleSystem *psys)
 {
 	ParticleSystemModifierData *psmd;
+	Mesh *me;
 
 	if(psys->flag & PSYS_DISABLED)
 		return 0;
 
+	if(ob->type == OB_MESH) {
+		me= (Mesh*)ob->data;
+		if(me->mr && me->mr->current != 1)
+			return 0;
+	}
+
 	psmd= psys_get_modifier(ob, psys);
 	if(psys->renderdata) {
 		if(!(psmd->modifier.mode & eModifierMode_Render))