diff --git a/drivers/gles3/rasterizer_storage_gles3.cpp b/drivers/gles3/rasterizer_storage_gles3.cpp
index 1cc346410bb..3282bc16eb9 100644
--- a/drivers/gles3/rasterizer_storage_gles3.cpp
+++ b/drivers/gles3/rasterizer_storage_gles3.cpp
@@ -4777,6 +4777,7 @@ RID RasterizerStorageGLES3::gi_probe_create() {
 	gip->bounds=Rect3(Vector3(),Vector3(1,1,1));
 	gip->dynamic_range=1.0;
 	gip->energy=1.0;
+	gip->propagation=1.0;
 	gip->interior=false;
 	gip->compress=false;
 	gip->version=1;
@@ -4882,6 +4883,15 @@ void RasterizerStorageGLES3::gi_probe_set_energy(RID p_probe,float p_range){
 
 }
 
+void RasterizerStorageGLES3::gi_probe_set_propagation(RID p_probe,float p_range){
+
+	GIProbe *gip = gi_probe_owner.getornull(p_probe);
+	ERR_FAIL_COND(!gip);
+
+	gip->propagation=p_range;
+
+}
+
 void RasterizerStorageGLES3::gi_probe_set_interior(RID p_probe,bool p_enable) {
 
 	GIProbe *gip = gi_probe_owner.getornull(p_probe);
@@ -4926,6 +4936,16 @@ float RasterizerStorageGLES3::gi_probe_get_energy(RID p_probe) const{
 	return gip->energy;
 }
 
+float RasterizerStorageGLES3::gi_probe_get_propagation(RID p_probe) const{
+
+	const GIProbe *gip = gi_probe_owner.getornull(p_probe);
+	ERR_FAIL_COND_V(!gip,0);
+
+	return gip->propagation;
+}
+
+
+
 
 
 uint32_t RasterizerStorageGLES3::gi_probe_get_version(RID p_probe) {
diff --git a/drivers/gles3/rasterizer_storage_gles3.h b/drivers/gles3/rasterizer_storage_gles3.h
index 5beb6e48aa8..fcce9f12dbb 100644
--- a/drivers/gles3/rasterizer_storage_gles3.h
+++ b/drivers/gles3/rasterizer_storage_gles3.h
@@ -921,6 +921,7 @@ public:
 
 		int dynamic_range;
 		float energy;
+		float propagation;
 		bool interior;
 		bool compress;
 
@@ -953,6 +954,9 @@ public:
 	virtual void gi_probe_set_energy(RID p_probe,float p_range);
 	virtual float gi_probe_get_energy(RID p_probe) const;
 
+	virtual void gi_probe_set_propagation(RID p_probe,float p_range);
+	virtual float gi_probe_get_propagation(RID p_probe) const;
+
 	virtual void gi_probe_set_interior(RID p_probe,bool p_enable);
 	virtual bool gi_probe_is_interior(RID p_probe) const;
 
diff --git a/scene/3d/gi_probe.cpp b/scene/3d/gi_probe.cpp
index 2b15af1c3c8..4c335905682 100644
--- a/scene/3d/gi_probe.cpp
+++ b/scene/3d/gi_probe.cpp
@@ -64,6 +64,18 @@ float GIProbeData::get_energy() const{
 
 }
 
+void GIProbeData::set_propagation(float p_range) {
+
+	VS::get_singleton()->gi_probe_set_propagation(probe,p_range);
+}
+
+float GIProbeData::get_propagation() const{
+
+	return VS::get_singleton()->gi_probe_get_propagation(probe);
+
+}
+
+
 void GIProbeData::set_interior(bool p_enable) {
 
 	VS::get_singleton()->gi_probe_set_interior(probe,p_enable);
@@ -121,6 +133,9 @@ void GIProbeData::_bind_methods() {
 	ClassDB::bind_method(_MD("set_energy","energy"),&GIProbeData::set_energy);
 	ClassDB::bind_method(_MD("get_energy"),&GIProbeData::get_energy);
 
+	ClassDB::bind_method(_MD("set_propagation","propagation"),&GIProbeData::set_propagation);
+	ClassDB::bind_method(_MD("get_propagation"),&GIProbeData::get_propagation);
+
 	ClassDB::bind_method(_MD("set_interior","interior"),&GIProbeData::set_interior);
 	ClassDB::bind_method(_MD("is_interior"),&GIProbeData::is_interior);
 
@@ -134,6 +149,7 @@ void GIProbeData::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::POOL_INT_ARRAY,"dynamic_data",PROPERTY_HINT_NONE,"",PROPERTY_USAGE_NOEDITOR),_SCS("set_dynamic_data"),_SCS("get_dynamic_data"));
 	ADD_PROPERTY(PropertyInfo(Variant::INT,"dynamic_range",PROPERTY_HINT_NONE,"",PROPERTY_USAGE_NOEDITOR),_SCS("set_dynamic_range"),_SCS("get_dynamic_range"));
 	ADD_PROPERTY(PropertyInfo(Variant::REAL,"energy",PROPERTY_HINT_NONE,"",PROPERTY_USAGE_NOEDITOR),_SCS("set_energy"),_SCS("get_energy"));
+	ADD_PROPERTY(PropertyInfo(Variant::REAL,"propagation",PROPERTY_HINT_NONE,"",PROPERTY_USAGE_NOEDITOR),_SCS("set_propagation"),_SCS("get_propagation"));
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL,"interior",PROPERTY_HINT_NONE,"",PROPERTY_USAGE_NOEDITOR),_SCS("set_interior"),_SCS("is_interior"));
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL,"compress",PROPERTY_HINT_NONE,"",PROPERTY_USAGE_NOEDITOR),_SCS("set_compress"),_SCS("is_compressed"));
 
@@ -214,6 +230,18 @@ float GIProbe::get_energy() const {
 	return energy;
 }
 
+void GIProbe::set_propagation(float p_propagation) {
+
+	propagation=p_propagation;
+	if (probe_data.is_valid()) {
+		probe_data->set_propagation(propagation);
+	}
+}
+float GIProbe::get_propagation() const {
+
+	return propagation;
+}
+
 void GIProbe::set_interior(bool p_enable) {
 
 	interior=p_enable;
@@ -1371,6 +1399,9 @@ void GIProbe::_bind_methods() {
 	ClassDB::bind_method(_MD("set_energy","max"),&GIProbe::set_energy);
 	ClassDB::bind_method(_MD("get_energy"),&GIProbe::get_energy);
 
+	ClassDB::bind_method(_MD("set_propagation","max"),&GIProbe::set_propagation);
+	ClassDB::bind_method(_MD("get_propagation"),&GIProbe::get_propagation);
+
 	ClassDB::bind_method(_MD("set_interior","enable"),&GIProbe::set_interior);
 	ClassDB::bind_method(_MD("is_interior"),&GIProbe::is_interior);
 
@@ -1385,6 +1416,7 @@ void GIProbe::_bind_methods() {
 	ADD_PROPERTY( PropertyInfo(Variant::VECTOR3,"extents"),_SCS("set_extents"),_SCS("get_extents"));
 	ADD_PROPERTY( PropertyInfo(Variant::INT,"dynamic_range",PROPERTY_HINT_RANGE,"1,16,1"),_SCS("set_dynamic_range"),_SCS("get_dynamic_range"));
 	ADD_PROPERTY( PropertyInfo(Variant::REAL,"energy",PROPERTY_HINT_RANGE,"0,16,0.01"),_SCS("set_energy"),_SCS("get_energy"));
+	ADD_PROPERTY( PropertyInfo(Variant::REAL,"propagation",PROPERTY_HINT_RANGE,"0,1,0.01"),_SCS("set_propagation"),_SCS("get_propagation"));
 	ADD_PROPERTY( PropertyInfo(Variant::BOOL,"interior"),_SCS("set_interior"),_SCS("is_interior"));
 	ADD_PROPERTY( PropertyInfo(Variant::BOOL,"compress"),_SCS("set_compress"),_SCS("is_compressed"));
 	ADD_PROPERTY( PropertyInfo(Variant::OBJECT,"data",PROPERTY_HINT_RESOURCE_TYPE,"GIProbeData"),_SCS("set_probe_data"),_SCS("get_probe_data"));
@@ -1402,6 +1434,7 @@ GIProbe::GIProbe() {
 	subdiv=SUBDIV_128;
 	dynamic_range=4;
 	energy=1.0;
+	propagation=1.0;
 	extents=Vector3(10,10,10);
 	color_scan_cell_width=4;
 	bake_texture_size=128;
diff --git a/scene/3d/gi_probe.h b/scene/3d/gi_probe.h
index 71e226ff3b4..f03a5589082 100644
--- a/scene/3d/gi_probe.h
+++ b/scene/3d/gi_probe.h
@@ -32,6 +32,9 @@ public:
 	void set_dynamic_range(int p_range);
 	int get_dynamic_range() const;
 
+	void set_propagation(float p_range);
+	float get_propagation() const;
+
 	void set_energy(float p_range);
 	float get_energy() const;
 
@@ -134,6 +137,7 @@ private:
 	Vector3 extents;
 	int dynamic_range;
 	float energy;
+	float propagation;
 	bool interior;
 	bool compress;
 
@@ -172,6 +176,9 @@ public:
 	void set_energy(float p_energy);
 	float get_energy() const;
 
+	void set_propagation(float p_propagation);
+	float get_propagation() const;
+
 	void set_interior(bool p_enable);
 	bool is_interior() const;
 
diff --git a/servers/visual/rasterizer.h b/servers/visual/rasterizer.h
index 84043c1a8c6..21f7f0769f4 100644
--- a/servers/visual/rasterizer.h
+++ b/servers/visual/rasterizer.h
@@ -432,6 +432,9 @@ public:
 	virtual void gi_probe_set_energy(RID p_probe,float p_range)=0;
 	virtual float gi_probe_get_energy(RID p_probe) const=0;
 
+	virtual void gi_probe_set_propagation(RID p_probe,float p_range)=0;
+	virtual float gi_probe_get_propagation(RID p_probe) const=0;
+
 	virtual void gi_probe_set_interior(RID p_probe,bool p_enable)=0;
 	virtual bool gi_probe_is_interior(RID p_probe) const=0;
 
diff --git a/servers/visual/visual_server_raster.h b/servers/visual/visual_server_raster.h
index 9184c64c210..ad0cb664c53 100644
--- a/servers/visual/visual_server_raster.h
+++ b/servers/visual/visual_server_raster.h
@@ -825,6 +825,9 @@ public:
 	BIND2(gi_probe_set_energy,RID,float)
 	BIND1RC(float,gi_probe_get_energy,RID)
 
+	BIND2(gi_probe_set_propagation,RID,float)
+	BIND1RC(float,gi_probe_get_propagation,RID)
+
 	BIND2(gi_probe_set_interior,RID,bool)
 	BIND1RC(bool,gi_probe_is_interior,RID)
 
diff --git a/servers/visual/visual_server_scene.cpp b/servers/visual/visual_server_scene.cpp
index 157a85be985..1d18a3e1263 100644
--- a/servers/visual/visual_server_scene.cpp
+++ b/servers/visual/visual_server_scene.cpp
@@ -2448,6 +2448,7 @@ void VisualServerScene::_setup_gi_probe(Instance *p_instance) {
 	probe->dynamic.bake_dynamic_range=VSG::storage->gi_probe_get_dynamic_range(p_instance->base);
 
 	probe->dynamic.mipmaps_3d.clear();
+	probe->dynamic.propagate=VSG::storage->gi_probe_get_propagation(p_instance->base);
 
 	probe->dynamic.grid_size[0]=header->width;
 	probe->dynamic.grid_size[1]=header->height;
@@ -2942,14 +2943,12 @@ void VisualServerScene::_bake_gi_probe_light(const GIProbeDataHeader *header,con
 }
 
 
-void VisualServerScene::_bake_gi_downscale_light(int p_idx, int p_level, const GIProbeDataCell* p_cells, const GIProbeDataHeader *p_header, InstanceGIProbeData::LocalData *p_local_data) {
+void VisualServerScene::_bake_gi_downscale_light(int p_idx, int p_level, const GIProbeDataCell* p_cells, const GIProbeDataHeader *p_header, InstanceGIProbeData::LocalData *p_local_data,float p_propagate) {
 
 	//average light to upper level
-	p_local_data[p_idx].energy[0]=0;
-	p_local_data[p_idx].energy[1]=0;
-	p_local_data[p_idx].energy[2]=0;
 
-	int divisor=0;
+	float divisor=0;
+	float sum[3]={0.0,0.0,0.0};
 
 	for(int i=0;i<8;i++) {
 
@@ -2959,20 +2958,25 @@ void VisualServerScene::_bake_gi_downscale_light(int p_idx, int p_level, const G
 			continue;
 
 		if (p_level+1 < (int)p_header->cell_subdiv-1) {
-			_bake_gi_downscale_light(child,p_level+1,p_cells,p_header,p_local_data);
+			_bake_gi_downscale_light(child,p_level+1,p_cells,p_header,p_local_data,p_propagate);
 		}
 
-		p_local_data[p_idx].energy[0]+=p_local_data[child].energy[0];
-		p_local_data[p_idx].energy[1]+=p_local_data[child].energy[1];
-		p_local_data[p_idx].energy[2]+=p_local_data[child].energy[2];
-		divisor++;
+		sum[0]+=p_local_data[child].energy[0];
+		sum[1]+=p_local_data[child].energy[1];
+		sum[2]+=p_local_data[child].energy[2];
+		divisor+=1.0;
 
 	}
 
+	divisor=Math::lerp(8.0,divisor,p_propagate);
+	sum[0]/=divisor;
+	sum[1]/=divisor;
+	sum[2]/=divisor;
+
 	//divide by eight for average
-	p_local_data[p_idx].energy[0]/=divisor;
-	p_local_data[p_idx].energy[1]/=divisor;
-	p_local_data[p_idx].energy[2]/=divisor;
+	p_local_data[p_idx].energy[0]=Math::fast_ftoi(sum[0]);
+	p_local_data[p_idx].energy[1]=Math::fast_ftoi(sum[1]);
+	p_local_data[p_idx].energy[2]=Math::fast_ftoi(sum[2]);
 
 }
 
@@ -3024,7 +3028,7 @@ void VisualServerScene::_bake_gi_probe(Instance *p_gi_probe) {
 	SWAP(probe_data->dynamic.light_cache_changes,probe_data->dynamic.light_cache);
 
 	//downscale to lower res levels
-	_bake_gi_downscale_light(0,0,cells,header,local_data);
+	_bake_gi_downscale_light(0,0,cells,header,local_data,probe_data->dynamic.propagate);
 
 	//plot result to 3D texture!
 
@@ -3337,6 +3341,14 @@ void VisualServerScene::render_probes() {
 			force_lighting=true;
 		}
 
+		float propagate = VSG::storage->gi_probe_get_propagation(instance_probe->base);
+
+		if (probe->dynamic.propagate!=propagate) {
+			probe->dynamic.propagate=propagate;
+			force_lighting=true;
+		}
+
+
 		if (probe->invalid==false && probe->dynamic.enabled) {
 
 			switch(probe->dynamic.updating_stage) {
diff --git a/servers/visual/visual_server_scene.h b/servers/visual/visual_server_scene.h
index 1f7de3d0059..f9a5dde1ace 100644
--- a/servers/visual/visual_server_scene.h
+++ b/servers/visual/visual_server_scene.h
@@ -445,6 +445,7 @@ public:
 			Vector< PoolVector<CompBlockS3TC> > mipmaps_s3tc; //for s3tc
 
 			int updating_stage;
+			float propagate;
 
 			int grid_size[3];
 
@@ -570,7 +571,7 @@ public:
 	void _gi_probe_fill_local_data(int p_idx,int p_level,int p_x,int p_y,int p_z,const GIProbeDataCell* p_cell,const GIProbeDataHeader *p_header,InstanceGIProbeData::LocalData *p_local_data,Vector<uint32_t> *prev_cell);
 
 	_FORCE_INLINE_ uint32_t _gi_bake_find_cell(const GIProbeDataCell *cells,int x,int y, int z,int p_cell_subdiv);
-	void _bake_gi_downscale_light(int p_idx, int p_level, const GIProbeDataCell* p_cells, const GIProbeDataHeader *p_header, InstanceGIProbeData::LocalData *p_local_data);
+	void _bake_gi_downscale_light(int p_idx, int p_level, const GIProbeDataCell* p_cells, const GIProbeDataHeader *p_header, InstanceGIProbeData::LocalData *p_local_data, float p_propagate);
 	void _bake_gi_probe_light(const GIProbeDataHeader *header,const GIProbeDataCell *cells,InstanceGIProbeData::LocalData *local_data,const uint32_t *leaves,int p_leaf_count, const InstanceGIProbeData::LightCache& light_cache,int p_sign);
 	void _bake_gi_probe(Instance *p_probe);
 	bool _check_gi_probe(Instance *p_gi_probe);
diff --git a/servers/visual_server.h b/servers/visual_server.h
index 4924851a550..cda77216531 100644
--- a/servers/visual_server.h
+++ b/servers/visual_server.h
@@ -474,6 +474,9 @@ public:
 	virtual void gi_probe_set_energy(RID p_probe,float p_range)=0;
 	virtual float gi_probe_get_energy(RID p_probe) const=0;
 
+	virtual void gi_probe_set_propagation(RID p_probe,float p_range)=0;
+	virtual float gi_probe_get_propagation(RID p_probe) const=0;
+
 	virtual void gi_probe_set_interior(RID p_probe,bool p_enable)=0;
 	virtual bool gi_probe_is_interior(RID p_probe) const=0;