Added baked light support for gridmaps.

3 files changed, 83 insertions, 28 deletions

diff --git a/scene/3d/baked_lightmap.cpp b/scene/3d/baked_lightmap.cpp
index 7afac94e71..ae9834d95f 100644
--- a/scene/3d/baked_lightmap.cpp
+++ b/scene/3d/baked_lightmap.cpp
@@ -55,12 +55,13 @@ float BakedLightmapData::get_energy() const {
 	return energy;
 }
 
-void BakedLightmapData::add_user(const NodePath &p_path, const Ref<Texture> &p_lightmap) {
+void BakedLightmapData::add_user(const NodePath &p_path, const Ref<Texture> &p_lightmap, int p_instance) {
 
 	ERR_FAIL_COND(p_lightmap.is_null());
 	User user;
 	user.path = p_path;
 	user.lightmap = p_lightmap;
+	user.instance_index = p_instance;
 	users.push_back(user);
 }
 
@@ -79,16 +80,22 @@ Ref<Texture> BakedLightmapData::get_user_lightmap(int p_user) const {
 	return users[p_user].lightmap;
 }
 
+int BakedLightmapData::get_user_instance(int p_user) const {
+
+	ERR_FAIL_INDEX_V(p_user, users.size(), -1);
+	return users[p_user].instance_index;
+}
+
 void BakedLightmapData::clear_users() {
 	users.clear();
 }
 
 void BakedLightmapData::_set_user_data(const Array &p_data) {
 
-	ERR_FAIL_COND(p_data.size() & 1);
+	ERR_FAIL_COND((p_data.size() % 3) != 0);
 
-	for (int i = 0; i < p_data.size(); i += 2) {
-		add_user(p_data[i], p_data[i + 1]);
+	for (int i = 0; i < p_data.size(); i += 3) {
+		add_user(p_data[i], p_data[i + 1], p_data[i + 2]);
 	}
 }
 
@@ -98,6 +105,7 @@ Array BakedLightmapData::_get_user_data() const {
 	for (int i = 0; i < users.size(); i++) {
 		ret.push_back(users[i].path);
 		ret.push_back(users[i].lightmap);
+		ret.push_back(users[i].instance_index);
 	}
 	return ret;
 }
@@ -209,6 +217,7 @@ void BakedLightmap::_find_meshes_and_lights(Node *p_at_node, List<PlotMesh> &plo
 					pm.local_xform = xf;
 					pm.mesh = mesh;
 					pm.path = get_path_to(mi);
+					pm.instance_idx = -1;
 					for (int i = 0; i < mesh->get_surface_count(); i++) {
 						pm.instance_materials.push_back(mi->get_surface_material(i));
 					}
@@ -219,6 +228,26 @@ void BakedLightmap::_find_meshes_and_lights(Node *p_at_node, List<PlotMesh> &plo
 		}
 	}
 
+	Spatial *s = Object::cast_to<Spatial>(p_at_node);
+
+	if (!mi && s) {
+		Array meshes = p_at_node->call("get_bake_meshes");
+		if (meshes.size() && (meshes.size() & 1) == 0) {
+			Transform xf = get_global_transform().affine_inverse() * s->get_global_transform();
+			for (int i = 0; i < meshes.size(); i += 2) {
+				PlotMesh pm;
+				Transform mesh_xf = meshes[i + 1];
+				pm.local_xform = xf * mesh_xf;
+				pm.mesh = meshes[i];
+				pm.instance_idx = i / 2;
+				if (!pm.mesh.is_valid())
+					continue;
+				pm.path = get_path_to(s);
+				plot_meshes.push_back(pm);
+			}
+		}
+	}
+
 	Light *light = Object::cast_to<Light>(p_at_node);
 
 	if (light && light->get_bake_mode() != Light::BAKE_DISABLED) {
@@ -477,7 +506,7 @@ BakedLightmap::BakeError BakedLightmap::bake(Node *p_from_node, bool p_create_vi
 			if (set_path) {
 				tex->set_path(image_path);
 			}
-			new_light_data->add_user(E->get().path, tex);
+			new_light_data->add_user(E->get().path, tex, E->get().instance_idx);
 		}
 	}
 
@@ -547,12 +576,21 @@ void BakedLightmap::_assign_lightmaps() {
 	ERR_FAIL_COND(!light_data.is_valid());
 
 	for (int i = 0; i < light_data->get_user_count(); i++) {
-		Node *node = get_node(light_data->get_user_path(i));
-		VisualInstance *vi = Object::cast_to<VisualInstance>(node);
-		ERR_CONTINUE(!vi);
 		Ref<Texture> lightmap = light_data->get_user_lightmap(i);
 		ERR_CONTINUE(!lightmap.is_valid());
-		VS::get_singleton()->instance_set_use_lightmap(vi->get_instance(), get_instance(), lightmap->get_rid());
+
+		Node *node = get_node(light_data->get_user_path(i));
+		int instance_idx = light_data->get_user_instance(i);
+		if (instance_idx >= 0) {
+			RID instance = node->call("get_bake_mesh_instance", instance_idx);
+			if (instance.is_valid()) {
+				VS::get_singleton()->instance_set_use_lightmap(instance, get_instance(), lightmap->get_rid());
+			}
+		} else {
+			VisualInstance *vi = Object::cast_to<VisualInstance>(node);
+			ERR_CONTINUE(!vi);
+			VS::get_singleton()->instance_set_use_lightmap(vi->get_instance(), get_instance(), lightmap->get_rid());
+		}
 	}
 }
 
@@ -560,9 +598,17 @@ void BakedLightmap::_clear_lightmaps() {
 	ERR_FAIL_COND(!light_data.is_valid());
 	for (int i = 0; i < light_data->get_user_count(); i++) {
 		Node *node = get_node(light_data->get_user_path(i));
-		VisualInstance *vi = Object::cast_to<VisualInstance>(node);
-		ERR_CONTINUE(!vi);
-		VS::get_singleton()->instance_set_use_lightmap(vi->get_instance(), RID(), RID());
+		int instance_idx = light_data->get_user_instance(i);
+		if (instance_idx >= 0) {
+			RID instance = node->call("get_bake_mesh_instance", instance_idx);
+			if (instance.is_valid()) {
+				VS::get_singleton()->instance_set_use_lightmap(instance, get_instance(), RID());
+			}
+		} else {
+			VisualInstance *vi = Object::cast_to<VisualInstance>(node);
+			ERR_CONTINUE(!vi);
+			VS::get_singleton()->instance_set_use_lightmap(vi->get_instance(), get_instance(), RID());
+		}
 	}
 }
 
diff --git a/scene/3d/baked_lightmap.h b/scene/3d/baked_lightmap.h
index f63749a0b4..9e15f1bb10 100644
--- a/scene/3d/baked_lightmap.h
+++ b/scene/3d/baked_lightmap.h
@@ -18,6 +18,7 @@ class BakedLightmapData : public Resource {
 
 		NodePath path;
 		Ref<Texture> lightmap;
+		int instance_index;
 	};
 
 	Vector<User> users;
@@ -44,10 +45,11 @@ public:
 	void set_energy(float p_energy);
 	float get_energy() const;
 
-	void add_user(const NodePath &p_path, const Ref<Texture> &p_lightmap);
+	void add_user(const NodePath &p_path, const Ref<Texture> &p_lightmap, int p_instance = -1);
 	int get_user_count() const;
 	NodePath get_user_path(int p_user) const;
 	Ref<Texture> get_user_lightmap(int p_user) const;
+	int get_user_instance(int p_user) const;
 	void clear_users();
 
 	virtual RID get_rid() const;
@@ -111,6 +113,7 @@ private:
 		Ref<Mesh> mesh;
 		Transform local_xform;
 		NodePath path;
+		int instance_idx;
 	};
 
 	struct PlotLight {
diff --git a/scene/3d/voxel_light_baker.cpp b/scene/3d/voxel_light_baker.cpp
index 39ff6fa35e..96ac5e8a05 100644
--- a/scene/3d/voxel_light_baker.cpp
+++ b/scene/3d/voxel_light_baker.cpp
@@ -833,11 +833,13 @@ void VoxelLightBaker::plot_light_directional(const Vector3 &p_direction, const C
 				}
 			}
 
-			for (int i = 0; i < 6; i++) {
-				float s = MAX(0.0, aniso_normal[i].dot(-light_axis)); //light depending on normal for direct
-				light->direct_accum[i][0] += light_energy.x * s;
-				light->direct_accum[i][1] += light_energy.y * s;
-				light->direct_accum[i][2] += light_energy.z * s;
+			if (p_direct) {
+				for (int i = 0; i < 6; i++) {
+					float s = MAX(0.0, aniso_normal[i].dot(-light_axis)); //light depending on normal for direct
+					light->direct_accum[i][0] += light_energy.x * s;
+					light->direct_accum[i][1] += light_energy.y * s;
+					light->direct_accum[i][2] += light_energy.z * s;
+				}
 			}
 			success_count++;
 		}
@@ -962,11 +964,13 @@ void VoxelLightBaker::plot_light_omni(const Vector3 &p_pos, const Color &p_color
 				}
 			}
 
-			for (int i = 0; i < 6; i++) {
-				float s = MAX(0.0, aniso_normal[i].dot(-light_axis)); //light depending on normal for direct
-				light->direct_accum[i][0] += light_energy.x * s * att;
-				light->direct_accum[i][1] += light_energy.y * s * att;
-				light->direct_accum[i][2] += light_energy.z * s * att;
+			if (p_direct) {
+				for (int i = 0; i < 6; i++) {
+					float s = MAX(0.0, aniso_normal[i].dot(-light_axis)); //light depending on normal for direct
+					light->direct_accum[i][0] += light_energy.x * s * att;
+					light->direct_accum[i][1] += light_energy.y * s * att;
+					light->direct_accum[i][2] += light_energy.z * s * att;
+				}
 			}
 		}
 
@@ -1095,11 +1099,13 @@ void VoxelLightBaker::plot_light_spot(const Vector3 &p_pos, const Vector3 &p_axi
 				}
 			}
 
-			for (int i = 0; i < 6; i++) {
-				float s = MAX(0.0, aniso_normal[i].dot(-light_axis)); //light depending on normal for direct
-				light->direct_accum[i][0] += light_energy.x * s * att;
-				light->direct_accum[i][1] += light_energy.y * s * att;
-				light->direct_accum[i][2] += light_energy.z * s * att;
+			if (p_direct) {
+				for (int i = 0; i < 6; i++) {
+					float s = MAX(0.0, aniso_normal[i].dot(-light_axis)); //light depending on normal for direct
+					light->direct_accum[i][0] += light_energy.x * s * att;
+					light->direct_accum[i][1] += light_energy.y * s * att;
+					light->direct_accum[i][2] += light_energy.z * s * att;
+				}
 			}
 		}