-Added proper access to depth texture from shader

-Split Mesh into Mesh (abstrat class) and ArrayMesh, to allow to proper mesh primitives, as well as streamable meshes in the future.

drivers/gles3/shader_compiler_gles3.cpp

@@ -747,6 +747,7 @@ ShaderCompilerGLES3::ShaderCompilerGLES3() {
 	actions[VS::SHADER_SPATIAL].renames["INSTANCE_CUSTOM"] = "instance_custom";
 	actions[VS::SHADER_SPATIAL].renames["SCREEN_UV"] = "screen_uv";
 	actions[VS::SHADER_SPATIAL].renames["SCREEN_TEXTURE"] = "screen_texture";
+	actions[VS::SHADER_SPATIAL].renames["DEPTH_TEXTURE"] = "depth_buffer";
 	actions[VS::SHADER_SPATIAL].renames["SIDE"] = "side";
 
 	actions[VS::SHADER_SPATIAL].usage_defines["TANGENT"] = "#define ENABLE_TANGENT_INTERP\n";

editor/import/editor_import_collada.cpp

@@ -72,7 +72,7 @@ struct ColladaImport {
 
 	Map<String, NodeMap> node_map; //map from collada node to engine node
 	Map<String, String> node_name_map; //map from collada node to engine node
-	Map<String, Ref<Mesh> > mesh_cache;
+	Map<String, Ref<ArrayMesh> > mesh_cache;
 	Map<String, Ref<Curve3D> > curve_cache;
 	Map<String, Ref<Material> > material_cache;
 	Map<Collada::Node *, Skeleton *> skeleton_map;
@@ -88,7 +88,7 @@ struct ColladaImport {
 	Error _create_scene(Collada::Node *p_node, Spatial *p_parent);
 	Error _create_resources(Collada::Node *p_node);
 	Error _create_material(const String &p_material);
-	Error _create_mesh_surfaces(bool p_optimize, Ref<Mesh> &p_mesh, const Map<String, Collada::NodeGeometry::Material> &p_material_map, const Collada::MeshData &meshdata, const Transform &p_local_xform, const Vector<int> &bone_remap, const Collada::SkinControllerData *p_skin_data, const Collada::MorphControllerData *p_morph_data, Vector<Ref<Mesh> > p_morph_meshes = Vector<Ref<Mesh> >(), bool p_for_morph = false, bool p_use_mesh_material = false);
+	Error _create_mesh_surfaces(bool p_optimize, Ref<ArrayMesh> &p_mesh, const Map<String, Collada::NodeGeometry::Material> &p_material_map, const Collada::MeshData &meshdata, const Transform &p_local_xform, const Vector<int> &bone_remap, const Collada::SkinControllerData *p_skin_data, const Collada::MorphControllerData *p_morph_data, Vector<Ref<ArrayMesh> > p_morph_meshes = Vector<Ref<ArrayMesh> >(), bool p_for_morph = false, bool p_use_mesh_material = false);
 	Error load(const String &p_path, int p_flags, bool p_force_make_tangents = false);
 	void _fix_param_animation_tracks();
 	void create_animation(int p_clip, bool p_make_tracks_in_all_bones, bool p_import_value_tracks);
@@ -591,7 +591,7 @@ static void _generate_tangents_and_binormals(const PoolVector<int> &p_indices, c
 	}
 }
 
-Error ColladaImport::_create_mesh_surfaces(bool p_optimize, Ref<Mesh> &p_mesh, const Map<String, Collada::NodeGeometry::Material> &p_material_map, const Collada::MeshData &meshdata, const Transform &p_local_xform, const Vector<int> &bone_remap, const Collada::SkinControllerData *skin_controller, const Collada::MorphControllerData *p_morph_data, Vector<Ref<Mesh> > p_morph_meshes, bool p_for_morph, bool p_use_mesh_material) {
+Error ColladaImport::_create_mesh_surfaces(bool p_optimize, Ref<ArrayMesh> &p_mesh, const Map<String, Collada::NodeGeometry::Material> &p_material_map, const Collada::MeshData &meshdata, const Transform &p_local_xform, const Vector<int> &bone_remap, const Collada::SkinControllerData *skin_controller, const Collada::MorphControllerData *p_morph_data, Vector<Ref<ArrayMesh> > p_morph_meshes, bool p_for_morph, bool p_use_mesh_material) {
 
 	bool local_xform_mirror = p_local_xform.basis.determinant() < 0;
 
@@ -1530,7 +1530,7 @@ Error ColladaImport::_create_resources(Collada::Node *p_node) {
 			String meshid;
 			Transform apply_xform;
 			Vector<int> bone_remap;
-			Vector<Ref<Mesh> > morphs;
+			Vector<Ref<ArrayMesh> > morphs;
 
 			print_line("mesh: " + String(mi->get_name()));
 
@@ -1621,9 +1621,9 @@ Error ColladaImport::_create_resources(Collada::Node *p_node) {
 
 							String meshid = names[i];
 							if (collada.state.mesh_data_map.has(meshid)) {
-								Ref<Mesh> mesh = Ref<Mesh>(memnew(Mesh));
+								Ref<ArrayMesh> mesh = Ref<ArrayMesh>(memnew(ArrayMesh));
 								const Collada::MeshData &meshdata = collada.state.mesh_data_map[meshid];
-								Error err = _create_mesh_surfaces(false, mesh, ng->material_map, meshdata, apply_xform, bone_remap, skin, NULL, Vector<Ref<Mesh> >(), true);
+								Error err = _create_mesh_surfaces(false, mesh, ng->material_map, meshdata, apply_xform, bone_remap, skin, NULL, Vector<Ref<ArrayMesh> >(), true);
 								ERR_FAIL_COND_V(err, err);
 
 								morphs.push_back(mesh);
@@ -1648,7 +1648,7 @@ Error ColladaImport::_create_resources(Collada::Node *p_node) {
 				meshid = ng->source;
 			}
 
-			Ref<Mesh> mesh;
+			Ref<ArrayMesh> mesh;
 			if (mesh_cache.has(meshid)) {
 				mesh = mesh_cache[meshid];
 			} else {
@@ -1656,7 +1656,7 @@ Error ColladaImport::_create_resources(Collada::Node *p_node) {
 					//bleh, must ignore invalid
 
 					ERR_FAIL_COND_V(!collada.state.mesh_data_map.has(meshid), ERR_INVALID_DATA);
-					mesh = Ref<Mesh>(memnew(Mesh));
+					mesh = Ref<ArrayMesh>(memnew(ArrayMesh));
 					const Collada::MeshData &meshdata = collada.state.mesh_data_map[meshid];
 					mesh->set_name(meshdata.name);
 					Error err = _create_mesh_surfaces(morphs.size() == 0, mesh, ng->material_map, meshdata, apply_xform, bone_remap, skin, morph, morphs, false, use_mesh_builtin_materials);

editor/import/resource_importer_obj.cpp

@@ -89,7 +89,7 @@ Error ResourceImporterOBJ::import(const String &p_source_file, const String &p_s
 	FileAccessRef f = FileAccess::open(p_source_file, FileAccess::READ);
 	ERR_FAIL_COND_V(!f, ERR_CANT_OPEN);
 
-	Ref<Mesh> mesh = Ref<Mesh>(memnew(Mesh));
+	Ref<ArrayMesh> mesh = Ref<ArrayMesh>(memnew(ArrayMesh));
 	Map<String, Ref<Material> > name_map;
 
 	bool generate_normals = p_options["generate/normals"];

editor/import/resource_importer_scene.cpp

@@ -137,7 +137,7 @@ static String _fixstr(const String &p_what, const String &p_str) {
 	return p_what;
 }
 
-Node *ResourceImporterScene::_fix_node(Node *p_node, Node *p_root, Map<Ref<Mesh>, Ref<Shape> > &collision_map) {
+Node *ResourceImporterScene::_fix_node(Node *p_node, Node *p_root, Map<Ref<ArrayMesh>, Ref<Shape> > &collision_map) {
 
 	// children first..
 	for (int i = 0; i < p_node->get_child_count(); i++) {
@@ -175,7 +175,7 @@ Node *ResourceImporterScene::_fix_node(Node *p_node, Node *p_root, Map<Ref<Mesh>
 			mi->set_flag(GeometryInstance::FLAG_BILLBOARD, true);
 			if (mi->get_mesh().is_valid()) {
 
-				Ref<Mesh> m = mi->get_mesh();
+				Ref<ArrayMesh> m = mi->get_mesh();
 				for (int i = 0; i < m->get_surface_count(); i++) {
 
 					Ref<SpatialMaterial> fm = m->surface_get_material(i);
@@ -194,7 +194,7 @@ Node *ResourceImporterScene::_fix_node(Node *p_node, Node *p_root, Map<Ref<Mesh>
 
 		MeshInstance *mi = p_node->cast_to<MeshInstance>();
 
-		Ref<Mesh> m = mi->get_mesh();
+		Ref<ArrayMesh> m = mi->get_mesh();
 
 		if (m.is_valid()) {
 
@@ -275,7 +275,7 @@ Node *ResourceImporterScene::_fix_node(Node *p_node, Node *p_root, Map<Ref<Mesh>
 
 					if (mi->get_mesh().is_valid()) {
 
-						Ref<Mesh> m = mi->get_mesh();
+						Ref<ArrayMesh> m = mi->get_mesh();
 						for (int i = 0; i < m->get_surface_count(); i++) {
 
 							Ref<SpatialMaterial> fm = m->surface_get_material(i);
@@ -325,7 +325,7 @@ Node *ResourceImporterScene::_fix_node(Node *p_node, Node *p_root, Map<Ref<Mesh>
 
 		    /*if (mi->get_mesh().is_valid()) {
 
-			Ref<Mesh> m = mi->get_mesh();
+			Ref<ArrayMesh> m = mi->get_mesh();
 			for(int i=0;i<m->get_surface_count();i++) {
 
 			    Ref<SpatialMaterial> fm = m->surface_get_material(i);
@@ -477,7 +477,7 @@ Node *ResourceImporterScene::_fix_node(Node *p_node, Node *p_root, Map<Ref<Mesh>
 
 		MeshInstance *mi = p_node->cast_to<MeshInstance>();
 
-		Ref<Mesh> mesh = mi->get_mesh();
+		Ref<ArrayMesh> mesh = mi->get_mesh();
 		ERR_FAIL_COND_V(mesh.is_null(), NULL);
 		NavigationMeshInstance *nmi = memnew(NavigationMeshInstance);
 
@@ -655,7 +655,7 @@ Node *ResourceImporterScene::_fix_node(Node *p_node, Node *p_root, Map<Ref<Mesh>
 
 		MeshInstance *mi = p_node->cast_to<MeshInstance>();
 
-		Ref<Mesh> mesh = mi->get_mesh();
+		Ref<ArrayMesh> mesh = mi->get_mesh();
 		if (!mesh.is_null()) {
 
 			if (_teststr(mesh->get_name(), "col")) {
@@ -972,7 +972,7 @@ static String _make_extname(const String &p_str) {
 	return ext_name;
 }
 
-void ResourceImporterScene::_make_external_resources(Node *p_node, const String &p_base_path, bool p_make_materials, bool p_make_meshes, Map<Ref<Material>, Ref<Material> > &p_materials, Map<Ref<Mesh>, Ref<Mesh> > &p_meshes) {
+void ResourceImporterScene::_make_external_resources(Node *p_node, const String &p_base_path, bool p_make_materials, bool p_make_meshes, Map<Ref<Material>, Ref<Material> > &p_materials, Map<Ref<ArrayMesh>, Ref<ArrayMesh> > &p_meshes) {
 
 	List<PropertyInfo> pi;
 
@@ -1005,7 +1005,7 @@ void ResourceImporterScene::_make_external_resources(Node *p_node, const String
 				}
 			} else {
 
-				Ref<Mesh> mesh = p_node->get(E->get().name);
+				Ref<ArrayMesh> mesh = p_node->get(E->get().name);
 
 				if (mesh.is_valid()) {
 
@@ -1018,7 +1018,7 @@ void ResourceImporterScene::_make_external_resources(Node *p_node, const String
 							String ext_name = p_base_path + "." + _make_extname(mesh->get_name()) + ".msh";
 							if (FileAccess::exists(ext_name)) {
 								//if exists, use it
-								Ref<Mesh> existing = ResourceLoader::load(ext_name);
+								Ref<ArrayMesh> existing = ResourceLoader::load(ext_name);
 								p_meshes[mesh] = existing;
 							} else {
 
@@ -1059,7 +1059,7 @@ void ResourceImporterScene::_make_external_resources(Node *p_node, const String
 							}
 
 							if (!p_make_meshes) {
-								p_meshes[mesh] = Ref<Mesh>(); //save it anyway, so it won't be checked again
+								p_meshes[mesh] = Ref<ArrayMesh>(); //save it anyway, so it won't be checked again
 							}
 						}
 					}
@@ -1192,7 +1192,7 @@ Error ResourceImporterScene::import(const String &p_source_file, const String &p
 	float anim_optimizer_angerr = p_options["animation/optimizer/max_angular_error"];
 	float anim_optimizer_maxang = p_options["animation/optimizer/max_angle"];
 
-	Map<Ref<Mesh>, Ref<Shape> > collision_map;
+	Map<Ref<ArrayMesh>, Ref<Shape> > collision_map;
 
 	scene = _fix_node(scene, scene, collision_map);
 
@@ -1230,7 +1230,7 @@ Error ResourceImporterScene::import(const String &p_source_file, const String &p
 
 	if (external_materials || external_meshes) {
 		Map<Ref<Material>, Ref<Material> > mat_map;
-		Map<Ref<Mesh>, Ref<Mesh> > mesh_map;
+		Map<Ref<ArrayMesh>, Ref<ArrayMesh> > mesh_map;
 		_make_external_resources(scene, p_source_file.get_basename(), external_materials, external_meshes, mat_map, mesh_map);
 	}
 

editor/import/resource_importer_scene.h

@@ -32,6 +32,7 @@
 
 #include "io/resource_import.h"
 #include "scene/resources/animation.h"
+#include "scene/resources/mesh.h"
 #include "scene/resources/shape.h"
 
 class Material;
@@ -100,9 +101,9 @@ public:
 	virtual void get_import_options(List<ImportOption> *r_options, int p_preset = 0) const;
 	virtual bool get_option_visibility(const String &p_option, const Map<StringName, Variant> &p_options) const;
 
-	void _make_external_resources(Node *p_node, const String &p_base_path, bool p_make_materials, bool p_make_meshes, Map<Ref<Material>, Ref<Material> > &p_materials, Map<Ref<Mesh>, Ref<Mesh> > &p_meshes);
+	void _make_external_resources(Node *p_node, const String &p_base_path, bool p_make_materials, bool p_make_meshes, Map<Ref<Material>, Ref<Material> > &p_materials, Map<Ref<ArrayMesh>, Ref<ArrayMesh> > &p_meshes);
 
-	Node *_fix_node(Node *p_node, Node *p_root, Map<Ref<Mesh>, Ref<Shape> > &collision_map);
+	Node *_fix_node(Node *p_node, Node *p_root, Map<Ref<ArrayMesh>, Ref<Shape> > &collision_map);
 
 	void _create_clips(Node *scene, const Array &p_clips, bool p_bake_all);
 	void _filter_anim_tracks(Ref<Animation> anim, Set<String> &keep);

editor/plugins/spatial_editor_plugin.cpp

@@ -3055,8 +3055,8 @@ void SpatialEditor::_init_indicators() {
 
 		for (int i = 0; i < 3; i++) {
 
-			move_gizmo[i] = Ref<Mesh>(memnew(Mesh));
-			rotate_gizmo[i] = Ref<Mesh>(memnew(Mesh));
+			move_gizmo[i] = Ref<ArrayMesh>(memnew(ArrayMesh));
+			rotate_gizmo[i] = Ref<ArrayMesh>(memnew(ArrayMesh));
 
 			Ref<SpatialMaterial> mat = memnew(SpatialMaterial);
 			mat->set_flag(SpatialMaterial::FLAG_UNSHADED, true);

editor/plugins/spatial_editor_plugin.h

@@ -330,13 +330,13 @@ private:
 	bool grid_enable[3]; //should be always visible if true
 	bool grid_enabled;
 
-	Ref<Mesh> move_gizmo[3], rotate_gizmo[3];
+	Ref<ArrayMesh> move_gizmo[3], rotate_gizmo[3];
 	Ref<SpatialMaterial> gizmo_color[3];
 	Ref<SpatialMaterial> gizmo_hl;
 
 	int over_gizmo_handle;
 
-	Ref<Mesh> selection_box;
+	Ref<ArrayMesh> selection_box;
 	RID indicators;
 	RID indicators_instance;
 	RID cursor_mesh;
@@ -472,8 +472,8 @@ public:
 	float get_rotate_snap() const { return snap_rotate->get_text().to_double(); }
 	float get_scale_snap() const { return snap_scale->get_text().to_double(); }
 
-	Ref<Mesh> get_move_gizmo(int idx) const { return move_gizmo[idx]; }
-	Ref<Mesh> get_rotate_gizmo(int idx) const { return rotate_gizmo[idx]; }
+	Ref<ArrayMesh> get_move_gizmo(int idx) const { return move_gizmo[idx]; }
+	Ref<ArrayMesh> get_rotate_gizmo(int idx) const { return rotate_gizmo[idx]; }
 
 	void update_transform_gizmo();
 

editor/spatial_editor_gizmos.cpp

@@ -79,7 +79,7 @@ void EditorSpatialGizmo::Instance::create_instance(Spatial *p_base) {
 	VS::get_singleton()->instance_set_layer_mask(instance, 1 << SpatialEditorViewport::GIZMO_EDIT_LAYER); //gizmos are 26
 }
 
-void EditorSpatialGizmo::add_mesh(const Ref<Mesh> &p_mesh, bool p_billboard, const RID &p_skeleton) {
+void EditorSpatialGizmo::add_mesh(const Ref<ArrayMesh> &p_mesh, bool p_billboard, const RID &p_skeleton) {
 
 	ERR_FAIL_COND(!spatial_node);
 	Instance ins;
@@ -100,7 +100,7 @@ void EditorSpatialGizmo::add_lines(const Vector<Vector3> &p_lines, const Ref<Mat
 	ERR_FAIL_COND(!spatial_node);
 	Instance ins;
 
-	Ref<Mesh> mesh = memnew(Mesh);
+	Ref<ArrayMesh> mesh = memnew(ArrayMesh);
 	Array a;
 	a.resize(Mesh::ARRAY_MAX);
 
@@ -162,7 +162,7 @@ void EditorSpatialGizmo::add_unscaled_billboard(const Ref<Material> &p_material,
 	uv.push_back(Vector2(0, 1));
 	uv.push_back(Vector2(1, 1));
 
-	Ref<Mesh> mesh = memnew(Mesh);
+	Ref<ArrayMesh> mesh = memnew(ArrayMesh);
 	Array a;
 	a.resize(Mesh::ARRAY_MAX);
 	a[Mesh::ARRAY_VERTEX] = vs;
@@ -219,7 +219,7 @@ void EditorSpatialGizmo::add_handles(const Vector<Vector3> &p_handles, bool p_bi
 	ERR_FAIL_COND(!spatial_node);
 	Instance ins;
 
-	Ref<Mesh> mesh = memnew(Mesh);
+	Ref<ArrayMesh> mesh = memnew(ArrayMesh);
 #if 1
 
 	Array a;
@@ -1029,7 +1029,7 @@ CameraSpatialGizmo::CameraSpatialGizmo(Camera *p_camera) {
 
 void MeshInstanceSpatialGizmo::redraw() {
 
-	Ref<Mesh> m = mesh->get_mesh();
+	Ref<ArrayMesh> m = mesh->get_mesh();
 	if (!m.is_valid())
 		return; //none
 
@@ -1248,7 +1248,7 @@ void SkeletonSpatialGizmo::redraw() {
 		*/
 	}
 
-	Ref<Mesh> m = surface_tool->commit();
+	Ref<ArrayMesh> m = surface_tool->commit();
 	add_mesh(m, false, skel->get_skeleton());
 }
 
@@ -2511,7 +2511,7 @@ void NavigationMeshSpatialGizmo::redraw() {
 	if (lines.size())
 		add_lines(lines, navmesh->is_enabled() ? SpatialEditorGizmos::singleton->navmesh_edge_material : SpatialEditorGizmos::singleton->navmesh_edge_material_disabled);
 	add_collision_triangles(tmesh);
-	Ref<Mesh> m = memnew(Mesh);
+	Ref<ArrayMesh> m = memnew(ArrayMesh);
 	Array a;
 	a.resize(Mesh::ARRAY_MAX);
 	a[0] = tmeshfaces;
@@ -3213,7 +3213,7 @@ SpatialEditorGizmos::SpatialEditorGizmos() {
 
 	//position 3D Shared mesh
 
-	pos3d_mesh = Ref<Mesh>(memnew(Mesh));
+	pos3d_mesh = Ref<ArrayMesh>(memnew(ArrayMesh));
 	{
 
 		PoolVector<Vector3> cursor_points;
@@ -3246,7 +3246,7 @@ SpatialEditorGizmos::SpatialEditorGizmos() {
 		pos3d_mesh->surface_set_material(0, mat);
 	}
 
-	listener_line_mesh = Ref<Mesh>(memnew(Mesh));
+	listener_line_mesh = Ref<ArrayMesh>(memnew(ArrayMesh));
 	{
 
 		PoolVector<Vector3> cursor_points;

editor/spatial_editor_gizmos.h

@@ -59,7 +59,7 @@ class EditorSpatialGizmo : public SpatialEditorGizmo {
 	struct Instance {
 
 		RID instance;
-		Ref<Mesh> mesh;
+		Ref<ArrayMesh> mesh;
 		RID skeleton;
 		bool billboard;
 		bool unscaled;
@@ -97,7 +97,7 @@ class EditorSpatialGizmo : public SpatialEditorGizmo {
 
 protected:
 	void add_lines(const Vector<Vector3> &p_lines, const Ref<Material> &p_material, bool p_billboard = false);
-	void add_mesh(const Ref<Mesh> &p_mesh, bool p_billboard = false, const RID &p_skeleton = RID());
+	void add_mesh(const Ref<ArrayMesh> &p_mesh, bool p_billboard = false, const RID &p_skeleton = RID());
 	void add_collision_segments(const Vector<Vector3> &p_lines);
 	void add_collision_triangles(const Ref<TriangleMesh> &p_tmesh);
 	void add_unscaled_billboard(const Ref<Material> &p_material, float p_scale = 1);
@@ -454,8 +454,8 @@ public:
 	Ref<SpatialMaterial> shape_material;
 	Ref<Texture> handle_t;
 
-	Ref<Mesh> pos3d_mesh;
-	Ref<Mesh> listener_line_mesh;
+	Ref<ArrayMesh> pos3d_mesh;
+	Ref<ArrayMesh> listener_line_mesh;
 	static SpatialEditorGizmos *singleton;
 
 	Ref<TriangleMesh> test_cube_tm;

scene/3d/gi_probe.cpp

@@ -973,7 +973,7 @@ GIProbe::Baker::MaterialCache GIProbe::_get_material_cache(Ref<Material> p_mater
 	return mc;
 }
 
-void GIProbe::_plot_mesh(const Transform &p_xform, Ref<Mesh> &p_mesh, Baker *p_baker, const Vector<Ref<Material> > &p_materials, const Ref<Material> &p_override_material) {
+void GIProbe::_plot_mesh(const Transform &p_xform, Ref<ArrayMesh> &p_mesh, Baker *p_baker, const Vector<Ref<Material> > &p_materials, const Ref<Material> &p_override_material) {
 
 	for (int i = 0; i < p_mesh->get_surface_count(); i++) {
 
@@ -1067,7 +1067,7 @@ void GIProbe::_find_meshes(Node *p_at_node, Baker *p_baker) {
 
 	MeshInstance *mi = p_at_node->cast_to<MeshInstance>();
 	if (mi && mi->get_flag(GeometryInstance::FLAG_USE_BAKED_LIGHT)) {
-		Ref<Mesh> mesh = mi->get_mesh();
+		Ref<ArrayMesh> mesh = mi->get_mesh();
 		if (mesh.is_valid()) {
 
 			Rect3 aabb = mesh->get_aabb();
@@ -1094,7 +1094,7 @@ void GIProbe::_find_meshes(Node *p_at_node, Baker *p_baker) {
 		for (int i = 0; i < meshes.size(); i += 2) {
 
 			Transform mxf = meshes[i];
-			Ref<Mesh> mesh = meshes[i + 1];
+			Ref<ArrayMesh> mesh = meshes[i + 1];
 			if (!mesh.is_valid())
 				continue;
 
@@ -1317,7 +1317,7 @@ void GIProbe::_create_debug_mesh(Baker *p_baker) {
 	print_line("leaf voxels: " + itos(p_baker->leaf_voxel_count));
 	mm->set_instance_count(p_baker->leaf_voxel_count);
 
-	Ref<Mesh> mesh;
+	Ref<ArrayMesh> mesh;
 	mesh.instance();
 
 	{

scene/3d/gi_probe.h

@@ -145,7 +145,7 @@ private:
 		struct PlotMesh {
 			Ref<Material> override_material;
 			Vector<Ref<Material> > instance_materials;
-			Ref<Mesh> mesh;
+			Ref<ArrayMesh> mesh;
 			Transform local_xform;
 		};
 
@@ -173,7 +173,7 @@ private:
 	Vector<Color> _get_bake_texture(Ref<Image> p_image, const Color &p_color);
 	Baker::MaterialCache _get_material_cache(Ref<Material> p_material, Baker *p_baker);
 	void _plot_face(int p_idx, int p_level, int p_x, int p_y, int p_z, const Vector3 *p_vtx, const Vector2 *p_uv, const Baker::MaterialCache &p_material, const Rect3 &p_aabb, Baker *p_baker);
-	void _plot_mesh(const Transform &p_xform, Ref<Mesh> &p_mesh, Baker *p_baker, const Vector<Ref<Material> > &p_materials, const Ref<Material> &p_override_material);
+	void _plot_mesh(const Transform &p_xform, Ref<ArrayMesh> &p_mesh, Baker *p_baker, const Vector<Ref<Material> > &p_materials, const Ref<Material> &p_override_material);
 	void _find_meshes(Node *p_at_node, Baker *p_baker);
 	void _fixup_plot(int p_idx, int p_level, int p_x, int p_y, int p_z, Baker *p_baker);
 

scene/3d/listener.cpp

@@ -152,7 +152,7 @@ bool Listener::_can_gizmo_scale() const {
 }
 
 RES Listener::_get_gizmo_geometry() const {
-	Ref<Mesh> mesh = memnew(Mesh);
+	Ref<ArrayMesh> mesh = memnew(ArrayMesh);
 
 	return mesh;
 }

scene/3d/navigation_mesh.cpp

@@ -187,7 +187,7 @@ Ref<Mesh> NavigationMesh::get_debug_mesh() {
 		}
 	}
 
-	debug_mesh = Ref<Mesh>(memnew(Mesh));
+	debug_mesh = Ref<ArrayMesh>(memnew(ArrayMesh));
 
 	Array arr;
 	arr.resize(Mesh::ARRAY_MAX);

scene/3d/navigation_mesh.h

@@ -44,7 +44,7 @@ class NavigationMesh : public Resource {
 		Vector<int> indices;
 	};
 	Vector<Polygon> polygons;
-	Ref<Mesh> debug_mesh;
+	Ref<ArrayMesh> debug_mesh;
 
 	struct _EdgeKey {
 

scene/3d/ray_cast.cpp

@@ -266,7 +266,7 @@ void RayCast::_create_debug_shape() {
 		line_material->set_albedo(Color(1.0, 0.8, 0.6));
 	}
 
-	Ref<Mesh> mesh = memnew(Mesh);
+	Ref<ArrayMesh> mesh = memnew(ArrayMesh);
 
 	MeshInstance *mi = memnew(MeshInstance);
 	mi->set_mesh(mesh);
@@ -287,7 +287,7 @@ void RayCast::_update_debug_shape() {
 	if (!mi->get_mesh().is_valid())
 		return;
 
-	Ref<Mesh> mesh = mi->get_mesh();
+	Ref<ArrayMesh> mesh = mi->get_mesh();
 	if (mesh->get_surface_count() > 0)
 		mesh->surface_remove(0);
 

scene/main/scene_main_loop.cpp

@@ -839,12 +839,12 @@ Ref<Material> SceneTree::get_debug_collision_material() {
 	return collision_material;
 }
 
-Ref<Mesh> SceneTree::get_debug_contact_mesh() {
+Ref<ArrayMesh> SceneTree::get_debug_contact_mesh() {
 
 	if (debug_contact_mesh.is_valid())
 		return debug_contact_mesh;
 
-	debug_contact_mesh = Ref<Mesh>(memnew(Mesh));
+	debug_contact_mesh = Ref<ArrayMesh>(memnew(ArrayMesh));
 
 	Ref<SpatialMaterial> mat = memnew(SpatialMaterial);
 	/*mat->set_flag(Material::FLAG_UNSHADED,true);

scene/main/scene_main_loop.h

@@ -33,6 +33,7 @@
 #include "io/networked_multiplayer_peer.h"
 #include "os/main_loop.h"
 #include "os/thread_safe.h"
+#include "scene/resources/mesh.h"
 #include "scene/resources/world.h"
 #include "scene/resources/world_2d.h"
 #include "self_list.h"
@@ -169,7 +170,7 @@ private:
 	Color debug_collision_contact_color;
 	Color debug_navigation_color;
 	Color debug_navigation_disabled_color;
-	Ref<Mesh> debug_contact_mesh;
+	Ref<ArrayMesh> debug_contact_mesh;
 	Ref<Material> navigation_material;
 	Ref<Material> navigation_disabled_material;
 	Ref<Material> collision_material;
@@ -406,7 +407,7 @@ public:
 	Ref<Material> get_debug_navigation_material();
 	Ref<Material> get_debug_navigation_disabled_material();
 	Ref<Material> get_debug_collision_material();
-	Ref<Mesh> get_debug_contact_mesh();
+	Ref<ArrayMesh> get_debug_contact_mesh();
 
 	int get_collision_debug_contact_count() { return collision_debug_contacts; }
 

scene/register_scene_types.cpp

@@ -523,11 +523,12 @@ void register_scene_types() {
 	ClassDB::register_virtual_class<Shader>();
 
 #ifndef _3D_DISABLED
-	ClassDB::register_class<Mesh>();
-	ClassDB::register_class<QuadMesh>();
+	ClassDB::register_virtual_class<Mesh>();
+	ClassDB::register_class<ArrayMesh>();
 	ClassDB::register_virtual_class<Material>();
 	ClassDB::register_class<SpatialMaterial>();
 	ClassDB::add_compatibility_class("FixedSpatialMaterial", "SpatialMaterial");
+	ClassDB::add_compatibility_class("Mesh", "ArrayMesh");
 	SceneTree::add_idle_callback(SpatialMaterial::flush_changes);
 	SpatialMaterial::init_shaders();
 

scene/resources/mesh.h

@@ -38,10 +38,13 @@
 /**
 	@author Juan Linietsky <[email protected]>
 */
-class Mesh : public Resource {
 
+class Mesh : public Resource {
 	GDCLASS(Mesh, Resource);
-	RES_BASE_EXTENSION("msh");
+
+	mutable Ref<TriangleMesh> triangle_mesh; //cached
+protected:
+	void _clear_triangle_mesh();
 
 public:
 	enum {
@@ -111,6 +114,34 @@ public:
 		BLEND_SHAPE_MODE_RELATIVE = VS::BLEND_SHAPE_MODE_RELATIVE,
 	};
 
+	virtual int get_surface_count() const = 0;
+	virtual int surface_get_array_len(int p_idx) const = 0;
+	virtual int surface_get_array_index_len(int p_idx) const = 0;
+	virtual Array surface_get_arrays(int p_surface) const = 0;
+	virtual uint32_t surface_get_format(int p_idx) const = 0;
+	virtual PrimitiveType surface_get_primitive_type(int p_idx) const = 0;
+	virtual Ref<Material> surface_get_material(int p_idx) const = 0;
+	virtual int get_blend_shape_count() const = 0;
+	virtual StringName get_blend_shape_name(int p_index) const = 0;
+
+	PoolVector<Face3> get_faces() const;
+	Ref<TriangleMesh> generate_triangle_mesh() const;
+
+	Ref<Shape> create_trimesh_shape() const;
+	Ref<Shape> create_convex_shape() const;
+
+	Ref<Mesh> create_outline(float p_margin) const;
+
+	virtual Rect3 get_aabb() const = 0;
+
+	Mesh();
+};
+
+class ArrayMesh : public Mesh {
+
+	GDCLASS(ArrayMesh, Mesh);
+	RES_BASE_EXTENSION("msh");
+
 private:
 	struct Surface {
 		String name;
@@ -124,8 +155,6 @@ private:
 	Vector<StringName> blend_shapes;
 	Rect3 custom_aabb;
 
-	mutable Ref<TriangleMesh> triangle_mesh;
-
 	void _recompute_aabb();
 
 protected:
@@ -177,21 +206,15 @@ public:
 	Rect3 get_aabb() const;
 	virtual RID get_rid() const;
 
-	Ref<Shape> create_trimesh_shape() const;
-	Ref<Shape> create_convex_shape() const;
-
-	Ref<Mesh> create_outline(float p_margin) const;
-
 	void center_geometry();
 	void regen_normalmaps();
 
-	PoolVector<Face3> get_faces() const;
-	Ref<TriangleMesh> generate_triangle_mesh() const;
-	Mesh();
+	ArrayMesh();
 
-	~Mesh();
+	~ArrayMesh();
 };
 
+#if 0
 class QuadMesh : public Mesh {
 
 	GDCLASS(QuadMesh, Mesh)
@@ -206,6 +229,8 @@ public:
 	QuadMesh();
 };
 
+#endif
+
 VARIANT_ENUM_CAST(Mesh::ArrayType);
 VARIANT_ENUM_CAST(Mesh::PrimitiveType);
 VARIANT_ENUM_CAST(Mesh::BlendShapeMode);

scene/resources/mesh_data_tool.cpp

@@ -38,7 +38,7 @@ void MeshDataTool::clear() {
 	format = 0;
 }
 
-Error MeshDataTool::create_from_surface(const Ref<Mesh> &p_mesh, int p_surface) {
+Error MeshDataTool::create_from_surface(const Ref<ArrayMesh> &p_mesh, int p_surface) {
 
 	ERR_FAIL_COND_V(p_mesh.is_null(), ERR_INVALID_PARAMETER);
 
@@ -179,7 +179,7 @@ Error MeshDataTool::create_from_surface(const Ref<Mesh> &p_mesh, int p_surface)
 	return OK;
 }
 
-Error MeshDataTool::commit_to_surface(const Ref<Mesh> &p_mesh) {
+Error MeshDataTool::commit_to_surface(const Ref<ArrayMesh> &p_mesh) {
 
 	ERR_FAIL_COND_V(p_mesh.is_null(), ERR_INVALID_PARAMETER);
 	Array arr;
@@ -309,7 +309,7 @@ Error MeshDataTool::commit_to_surface(const Ref<Mesh> &p_mesh) {
 	if (w.size())
 		arr[Mesh::ARRAY_WEIGHTS] = w;
 
-	Ref<Mesh> ncmesh = p_mesh;
+	Ref<ArrayMesh> ncmesh = p_mesh;
 	int sc = ncmesh->get_surface_count();
 	ncmesh->add_surface_from_arrays(Mesh::PRIMITIVE_TRIANGLES, arr);
 	ncmesh->surface_set_material(sc, material);

scene/resources/mesh_data_tool.h

@@ -78,8 +78,8 @@ protected:
 
 public:
 	void clear();
-	Error create_from_surface(const Ref<Mesh> &p_mesh, int p_surface);
-	Error commit_to_surface(const Ref<Mesh> &p_mesh);
+	Error create_from_surface(const Ref<ArrayMesh> &p_mesh, int p_surface);
+	Error commit_to_surface(const Ref<ArrayMesh> &p_mesh);
 
 	int get_format() const;
 

scene/resources/shape.cpp

@@ -49,14 +49,14 @@ void Shape::add_vertices_to_array(PoolVector<Vector3> &array, const Transform &p
 	}
 }
 
-Ref<Mesh> Shape::get_debug_mesh() {
+Ref<ArrayMesh> Shape::get_debug_mesh() {
 
 	if (debug_mesh_cache.is_valid())
 		return debug_mesh_cache;
 
 	Vector<Vector3> lines = _gen_debug_mesh_lines();
 
-	debug_mesh_cache = Ref<Mesh>(memnew(Mesh));
+	debug_mesh_cache = Ref<ArrayMesh>(memnew(ArrayMesh));
 
 	if (!lines.empty()) {
 		//make mesh

scene/resources/shape.h

@@ -31,7 +31,7 @@
 #define SHAPE_H
 
 #include "resource.h"
-class Mesh;
+class ArrayMesh;
 
 class Shape : public Resource {
 
@@ -40,7 +40,7 @@ class Shape : public Resource {
 	RES_BASE_EXTENSION("shp");
 	RID shape;
 
-	Ref<Mesh> debug_mesh_cache;
+	Ref<ArrayMesh> debug_mesh_cache;
 
 protected:
 	_FORCE_INLINE_ RID get_shape() const { return shape; }
@@ -50,7 +50,7 @@ protected:
 public:
 	virtual RID get_rid() const { return shape; }
 
-	Ref<Mesh> get_debug_mesh();
+	Ref<ArrayMesh> get_debug_mesh();
 
 	void add_vertices_to_array(PoolVector<Vector3> &array, const Transform &p_xform);
 

scene/resources/surface_tool.cpp

@@ -224,13 +224,13 @@ void SurfaceTool::add_index(int p_index) {
 	index_array.push_back(p_index);
 }
 
-Ref<Mesh> SurfaceTool::commit(const Ref<Mesh> &p_existing) {
+Ref<ArrayMesh> SurfaceTool::commit(const Ref<ArrayMesh> &p_existing) {
 
-	Ref<Mesh> mesh;
+	Ref<ArrayMesh> mesh;
 	if (p_existing.is_valid())
 		mesh = p_existing;
 	else
-		mesh = Ref<Mesh>(memnew(Mesh));
+		mesh.instance();
 
 	int varr_len = vertex_array.size();
 

scene/resources/surface_tool.h

@@ -125,7 +125,7 @@ public:
 
 	void create_from(const Ref<Mesh> &p_existing, int p_surface);
 	void append_from(const Ref<Mesh> &p_existing, int p_surface, const Transform &p_xform);
-	Ref<Mesh> commit(const Ref<Mesh> &p_existing = Ref<Mesh>());
+	Ref<ArrayMesh> commit(const Ref<ArrayMesh> &p_existing = Ref<ArrayMesh>());
 
 	SurfaceTool();
 };

servers/visual/shader_types.cpp

@@ -105,6 +105,7 @@ ShaderTypes::ShaderTypes() {
 	shader_modes[VS::SHADER_SPATIAL].functions["fragment"]["SPECIAL"] = ShaderLanguage::TYPE_FLOAT;
 	shader_modes[VS::SHADER_SPATIAL].functions["fragment"]["DISCARD"] = ShaderLanguage::TYPE_BOOL;
 	shader_modes[VS::SHADER_SPATIAL].functions["fragment"]["SCREEN_TEXTURE"] = ShaderLanguage::TYPE_SAMPLER2D;
+	shader_modes[VS::SHADER_SPATIAL].functions["fragment"]["DEPTH_TEXTURE"] = ShaderLanguage::TYPE_SAMPLER2D;
 	shader_modes[VS::SHADER_SPATIAL].functions["fragment"]["SCREEN_UV"] = ShaderLanguage::TYPE_VEC2;
 	shader_modes[VS::SHADER_SPATIAL].functions["fragment"]["POINT_COORD"] = ShaderLanguage::TYPE_VEC2;
 	shader_modes[VS::SHADER_SPATIAL].functions["fragment"]["SIDE"] = ShaderLanguage::TYPE_FLOAT;