Deprecate ImmediateGeometry

* Removed entirely from RenderingServer.
* Replaced by ImmediateMesh resource.
* ImmediateMesh replaces ImmediateGeometry, but could use more optimization in the future.
* Sprite3D and AnimatedSprite3D work again, ported from Godot 3.x (though a lot of work was needed to adapt them to Godot 4).
* RootMotionView works again.
* Polygon3D editor works again.

14 files changed, 851 insertions, 353 deletions

diff --git a/scene/3d/immediate_geometry_3d.cpp b/scene/3d/immediate_geometry_3d.cpp
deleted file mode 100644
index d64babaa9d..0000000000
--- a/scene/3d/immediate_geometry_3d.cpp
+++ /dev/null
@@ -1,157 +0,0 @@
-/*************************************************************************/
-/*  immediate_geometry_3d.cpp                                            */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md).   */
-/*                                                                       */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the       */
-/* "Software"), to deal in the Software without restriction, including   */
-/* without limitation the rights to use, copy, modify, merge, publish,   */
-/* distribute, sublicense, and/or sell copies of the Software, and to    */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions:                                             */
-/*                                                                       */
-/* The above copyright notice and this permission notice shall be        */
-/* included in all copies or substantial portions of the Software.       */
-/*                                                                       */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
-/*************************************************************************/
-
-#include "immediate_geometry_3d.h"
-
-void ImmediateGeometry3D::begin(Mesh::PrimitiveType p_primitive, const Ref<Texture2D> &p_texture) {
-	RS::get_singleton()->immediate_begin(im, (RS::PrimitiveType)p_primitive, p_texture.is_valid() ? p_texture->get_rid() : RID());
-	if (p_texture.is_valid()) {
-		cached_textures.push_back(p_texture);
-	}
-}
-
-void ImmediateGeometry3D::set_normal(const Vector3 &p_normal) {
-	RS::get_singleton()->immediate_normal(im, p_normal);
-}
-
-void ImmediateGeometry3D::set_tangent(const Plane &p_tangent) {
-	RS::get_singleton()->immediate_tangent(im, p_tangent);
-}
-
-void ImmediateGeometry3D::set_color(const Color &p_color) {
-	RS::get_singleton()->immediate_color(im, p_color);
-}
-
-void ImmediateGeometry3D::set_uv(const Vector2 &p_uv) {
-	RS::get_singleton()->immediate_uv(im, p_uv);
-}
-
-void ImmediateGeometry3D::set_uv2(const Vector2 &p_uv2) {
-	RS::get_singleton()->immediate_uv2(im, p_uv2);
-}
-
-void ImmediateGeometry3D::add_vertex(const Vector3 &p_vertex) {
-	RS::get_singleton()->immediate_vertex(im, p_vertex);
-	if (empty) {
-		aabb.position = p_vertex;
-		aabb.size = Vector3();
-		empty = false;
-	} else {
-		aabb.expand_to(p_vertex);
-	}
-}
-
-void ImmediateGeometry3D::end() {
-	RS::get_singleton()->immediate_end(im);
-}
-
-void ImmediateGeometry3D::clear() {
-	RS::get_singleton()->immediate_clear(im);
-	empty = true;
-	cached_textures.clear();
-}
-
-AABB ImmediateGeometry3D::get_aabb() const {
-	return aabb;
-}
-
-Vector<Face3> ImmediateGeometry3D::get_faces(uint32_t p_usage_flags) const {
-	return Vector<Face3>();
-}
-
-void ImmediateGeometry3D::add_sphere(int p_lats, int p_lons, float p_radius, bool p_add_uv) {
-	const double lat_step = Math_TAU / p_lats;
-	const double lon_step = Math_TAU / p_lons;
-
-	for (int i = 1; i <= p_lats; i++) {
-		double lat0 = lat_step * (i - 1) - Math_TAU / 4;
-		double z0 = Math::sin(lat0);
-		double zr0 = Math::cos(lat0);
-
-		double lat1 = lat_step * i - Math_TAU / 4;
-		double z1 = Math::sin(lat1);
-		double zr1 = Math::cos(lat1);
-
-		for (int j = p_lons; j >= 1; j--) {
-			double lng0 = lon_step * (j - 1);
-			double x0 = Math::cos(lng0);
-			double y0 = Math::sin(lng0);
-
-			double lng1 = lon_step * j;
-			double x1 = Math::cos(lng1);
-			double y1 = Math::sin(lng1);
-
-			Vector3 v[4] = {
-				Vector3(x1 * zr0, z0, y1 * zr0),
-				Vector3(x1 * zr1, z1, y1 * zr1),
-				Vector3(x0 * zr1, z1, y0 * zr1),
-				Vector3(x0 * zr0, z0, y0 * zr0)
-			};
-
-#define ADD_POINT(m_idx)                                                                                    \
-	if (p_add_uv) {                                                                                         \
-		set_uv(Vector2(Math::atan2(v[m_idx].x, v[m_idx].z) / Math_PI * 0.5 + 0.5, v[m_idx].y * 0.5 + 0.5)); \
-		set_tangent(Plane(Vector3(-v[m_idx].z, v[m_idx].y, v[m_idx].x), 1));                                \
-	}                                                                                                       \
-	set_normal(v[m_idx]);                                                                                   \
-	add_vertex(v[m_idx] * p_radius);
-
-			ADD_POINT(0);
-			ADD_POINT(1);
-			ADD_POINT(2);
-
-			ADD_POINT(2);
-			ADD_POINT(3);
-			ADD_POINT(0);
-		}
-	}
-}
-
-void ImmediateGeometry3D::_bind_methods() {
-	ClassDB::bind_method(D_METHOD("begin", "primitive", "texture"), &ImmediateGeometry3D::begin, DEFVAL(Ref<Texture2D>()));
-	ClassDB::bind_method(D_METHOD("set_normal", "normal"), &ImmediateGeometry3D::set_normal);
-	ClassDB::bind_method(D_METHOD("set_tangent", "tangent"), &ImmediateGeometry3D::set_tangent);
-	ClassDB::bind_method(D_METHOD("set_color", "color"), &ImmediateGeometry3D::set_color);
-	ClassDB::bind_method(D_METHOD("set_uv", "uv"), &ImmediateGeometry3D::set_uv);
-	ClassDB::bind_method(D_METHOD("set_uv2", "uv"), &ImmediateGeometry3D::set_uv2);
-	ClassDB::bind_method(D_METHOD("add_vertex", "position"), &ImmediateGeometry3D::add_vertex);
-	ClassDB::bind_method(D_METHOD("add_sphere", "lats", "lons", "radius", "add_uv"), &ImmediateGeometry3D::add_sphere, DEFVAL(true));
-	ClassDB::bind_method(D_METHOD("end"), &ImmediateGeometry3D::end);
-	ClassDB::bind_method(D_METHOD("clear"), &ImmediateGeometry3D::clear);
-}
-
-ImmediateGeometry3D::ImmediateGeometry3D() {
-	im = RenderingServer::get_singleton()->immediate_create();
-	set_base(im);
-}
-
-ImmediateGeometry3D::~ImmediateGeometry3D() {
-	RenderingServer::get_singleton()->free(im);
-}
diff --git a/scene/3d/immediate_geometry_3d.h b/scene/3d/immediate_geometry_3d.h
deleted file mode 100644
index ee4938d9f7..0000000000
--- a/scene/3d/immediate_geometry_3d.h
+++ /dev/null
@@ -1,72 +0,0 @@
-/*************************************************************************/
-/*  immediate_geometry_3d.h                                              */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md).   */
-/*                                                                       */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the       */
-/* "Software"), to deal in the Software without restriction, including   */
-/* without limitation the rights to use, copy, modify, merge, publish,   */
-/* distribute, sublicense, and/or sell copies of the Software, and to    */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions:                                             */
-/*                                                                       */
-/* The above copyright notice and this permission notice shall be        */
-/* included in all copies or substantial portions of the Software.       */
-/*                                                                       */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
-/*************************************************************************/
-
-#ifndef IMMEDIATE_GEOMETRY_3D_H
-#define IMMEDIATE_GEOMETRY_3D_H
-
-#include "scene/3d/visual_instance_3d.h"
-#include "scene/resources/mesh.h"
-
-class ImmediateGeometry3D : public GeometryInstance3D {
-	GDCLASS(ImmediateGeometry3D, GeometryInstance3D);
-
-	RID im;
-	//a list of textures drawn need to be kept, to avoid references
-	// in RenderingServer from becoming invalid if the texture is no longer used
-	List<Ref<Texture2D>> cached_textures;
-	bool empty = true;
-	AABB aabb;
-
-protected:
-	static void _bind_methods();
-
-public:
-	void begin(Mesh::PrimitiveType p_primitive, const Ref<Texture2D> &p_texture = Ref<Texture2D>());
-	void set_normal(const Vector3 &p_normal);
-	void set_tangent(const Plane &p_tangent);
-	void set_color(const Color &p_color);
-	void set_uv(const Vector2 &p_uv);
-	void set_uv2(const Vector2 &p_uv2);
-
-	void add_vertex(const Vector3 &p_vertex);
-
-	void end();
-	void clear();
-
-	void add_sphere(int p_lats, int p_lons, float p_radius, bool p_add_uv = true);
-
-	virtual AABB get_aabb() const override;
-	virtual Vector<Face3> get_faces(uint32_t p_usage_flags) const override;
-
-	ImmediateGeometry3D();
-	~ImmediateGeometry3D();
-};
-
-#endif // IMMEDIATE_GEOMETRY_H
diff --git a/scene/3d/soft_body_3d.cpp b/scene/3d/soft_body_3d.cpp
index 9592fe5849..324131d400 100644
--- a/scene/3d/soft_body_3d.cpp
+++ b/scene/3d/soft_body_3d.cpp
@@ -81,7 +81,7 @@ void SoftBodyRenderingServerHandler::close() {
 }
 
 void SoftBodyRenderingServerHandler::commit_changes() {
-	RS::get_singleton()->mesh_surface_update_region(mesh, surface, 0, buffer);
+	RS::get_singleton()->mesh_surface_update_vertex_region(mesh, surface, 0, buffer);
 }
 
 void SoftBodyRenderingServerHandler::set_vertex(int p_vertex_id, const void *p_vector3) {
diff --git a/scene/3d/sprite_3d.cpp b/scene/3d/sprite_3d.cpp
index 9ec461d973..8a79b03ad4 100644
--- a/scene/3d/sprite_3d.cpp
+++ b/scene/3d/sprite_3d.cpp
@@ -164,6 +164,8 @@ void SpriteBase3D::_im_update() {
 	_draw();
 
 	pending_update = false;
+
+	//texture->draw_rect_region(ci,dst_rect,src_rect,modulate);
 }
 
 void SpriteBase3D::_queue_update() {
@@ -204,6 +206,7 @@ Ref<TriangleMesh> SpriteBase3D::generate_triangle_mesh() const {
 	float pixel_size = get_pixel_size();
 
 	Vector2 vertices[4] = {
+
 		(final_rect.position + Vector2(0, final_rect.size.y)) * pixel_size,
 		(final_rect.position + final_rect.size) * pixel_size,
 		(final_rect.position + Vector2(final_rect.size.x, 0)) * pixel_size,
@@ -313,6 +316,9 @@ void SpriteBase3D::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_item_rect"), &SpriteBase3D::get_item_rect);
 	ClassDB::bind_method(D_METHOD("generate_triangle_mesh"), &SpriteBase3D::generate_triangle_mesh);
 
+	ClassDB::bind_method(D_METHOD("_queue_update"), &SpriteBase3D::_queue_update);
+	ClassDB::bind_method(D_METHOD("_im_update"), &SpriteBase3D::_im_update);
+
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "centered"), "set_centered", "is_centered");
 	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "offset"), "set_offset", "get_offset");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "flip_h"), "set_flip_h", "is_flipped_h");
@@ -343,21 +349,89 @@ SpriteBase3D::SpriteBase3D() {
 		flags[i] = i == FLAG_TRANSPARENT || i == FLAG_DOUBLE_SIDED;
 	}
 
-	immediate = RenderingServer::get_singleton()->immediate_create();
-	set_base(immediate);
+	material = RenderingServer::get_singleton()->material_create();
+	// Set defaults for material, names need to match up those in StandardMaterial3D
+	RS::get_singleton()->material_set_param(material, "albedo", Color(1, 1, 1, 1));
+	RS::get_singleton()->material_set_param(material, "specular", 0.5);
+	RS::get_singleton()->material_set_param(material, "metallic", 0.0);
+	RS::get_singleton()->material_set_param(material, "roughness", 1.0);
+	RS::get_singleton()->material_set_param(material, "uv1_offset", Vector3(0, 0, 0));
+	RS::get_singleton()->material_set_param(material, "uv1_scale", Vector3(1, 1, 1));
+	RS::get_singleton()->material_set_param(material, "uv2_offset", Vector3(0, 0, 0));
+	RS::get_singleton()->material_set_param(material, "uv2_scale", Vector3(1, 1, 1));
+	RS::get_singleton()->material_set_param(material, "alpha_scissor_threshold", 0.98);
+
+	mesh = RenderingServer::get_singleton()->mesh_create();
+
+	PackedVector3Array mesh_vertices;
+	PackedVector3Array mesh_normals;
+	PackedFloat32Array mesh_tangents;
+	PackedColorArray mesh_colors;
+	PackedVector2Array mesh_uvs;
+	PackedInt32Array indices;
+
+	mesh_vertices.resize(4);
+	mesh_normals.resize(4);
+	mesh_tangents.resize(16);
+	mesh_colors.resize(4);
+	mesh_uvs.resize(4);
+
+	// create basic mesh and store format information
+	for (int i = 0; i < 4; i++) {
+		mesh_normals.write[i] = Vector3(0.0, 0.0, 0.0);
+		mesh_tangents.write[i * 4 + 0] = 0.0;
+		mesh_tangents.write[i * 4 + 1] = 0.0;
+		mesh_tangents.write[i * 4 + 2] = 0.0;
+		mesh_tangents.write[i * 4 + 3] = 0.0;
+		mesh_colors.write[i] = Color(1.0, 1.0, 1.0, 1.0);
+		mesh_uvs.write[i] = Vector2(0.0, 0.0);
+		mesh_vertices.write[i] = Vector3(0.0, 0.0, 0.0);
+	}
+
+	indices.resize(6);
+	indices.write[0] = 0;
+	indices.write[1] = 1;
+	indices.write[2] = 2;
+	indices.write[3] = 0;
+	indices.write[4] = 2;
+	indices.write[5] = 3;
+
+	Array mesh_array;
+	mesh_array.resize(RS::ARRAY_MAX);
+	mesh_array[RS::ARRAY_VERTEX] = mesh_vertices;
+	mesh_array[RS::ARRAY_NORMAL] = mesh_normals;
+	mesh_array[RS::ARRAY_TANGENT] = mesh_tangents;
+	mesh_array[RS::ARRAY_COLOR] = mesh_colors;
+	mesh_array[RS::ARRAY_TEX_UV] = mesh_uvs;
+	mesh_array[RS::ARRAY_INDEX] = indices;
+
+	RS::SurfaceData sd;
+	RS::get_singleton()->mesh_create_surface_data_from_arrays(&sd, RS::PRIMITIVE_TRIANGLES, mesh_array);
+
+	mesh_surface_format = sd.format;
+	vertex_buffer = sd.vertex_data;
+	attribute_buffer = sd.attribute_data;
+
+	sd.material = material;
+
+	RS::get_singleton()->mesh_surface_make_offsets_from_format(sd.format, sd.vertex_count, sd.index_count, mesh_surface_offsets, vertex_stride, attrib_stride, skin_stride);
+	RS::get_singleton()->mesh_add_surface(mesh, sd);
+	set_base(mesh);
 }
 
 SpriteBase3D::~SpriteBase3D() {
-	RenderingServer::get_singleton()->free(immediate);
+	RenderingServer::get_singleton()->free(mesh);
+	RenderingServer::get_singleton()->free(material);
 }
 
 ///////////////////////////////////////////
 
 void Sprite3D::_draw() {
-	RID immediate = get_immediate();
-
-	RS::get_singleton()->immediate_clear(immediate);
+	if (get_base() != get_mesh()) {
+		set_base(get_mesh());
+	}
 	if (!texture.is_valid()) {
+		set_base(RID());
 		return;
 	}
 	Vector2 tsize = texture->get_size();
@@ -366,7 +440,7 @@ void Sprite3D::_draw() {
 	}
 
 	Rect2 base_rect;
-	if (region_enabled) {
+	if (region) {
 		base_rect = region_rect;
 	} else {
 		base_rect = Rect2(0, 0, texture->get_width(), texture->get_height());
@@ -399,6 +473,7 @@ void Sprite3D::_draw() {
 	float pixel_size = get_pixel_size();
 
 	Vector2 vertices[4] = {
+
 		(final_rect.position + Vector2(0, final_rect.size.y)) * pixel_size,
 		(final_rect.position + final_rect.size) * pixel_size,
 		(final_rect.position + Vector2(final_rect.size.x, 0)) * pixel_size,
@@ -426,6 +501,7 @@ void Sprite3D::_draw() {
 		SWAP(uvs[0], uvs[1]);
 		SWAP(uvs[2], uvs[3]);
 	}
+
 	if (is_flipped_v()) {
 		SWAP(uvs[0], uvs[3]);
 		SWAP(uvs[1], uvs[2]);
@@ -442,11 +518,6 @@ void Sprite3D::_draw() {
 		tangent = Plane(1, 0, 0, 1);
 	}
 
-	RID mat = StandardMaterial3D::get_material_rid_for_2d(get_draw_flag(FLAG_SHADED), get_draw_flag(FLAG_TRANSPARENT), get_draw_flag(FLAG_DOUBLE_SIDED), get_alpha_cut_mode() == ALPHA_CUT_DISCARD, get_alpha_cut_mode() == ALPHA_CUT_OPAQUE_PREPASS, get_billboard_mode() == StandardMaterial3D::BILLBOARD_ENABLED, get_billboard_mode() == StandardMaterial3D::BILLBOARD_FIXED_Y);
-	RS::get_singleton()->immediate_set_material(immediate, mat);
-
-	RS::get_singleton()->immediate_begin(immediate, RS::PRIMITIVE_TRIANGLES, texture->get_rid());
-
 	int x_axis = ((axis + 1) % 3);
 	int y_axis = ((axis + 2) % 3);
 
@@ -466,31 +537,80 @@ void Sprite3D::_draw() {
 
 	AABB aabb;
 
-	for (int i = 0; i < 6; i++) {
-		static const int index[6] = { 0, 1, 2, 0, 2, 3 };
+	// Everything except position and UV is compressed
+	uint8_t *vertex_write_buffer = vertex_buffer.ptrw();
+	uint8_t *attribute_write_buffer = attribute_buffer.ptrw();
+
+	uint32_t v_normal;
+	{
+		Vector3 n = normal * Vector3(0.5, 0.5, 0.5) + Vector3(0.5, 0.5, 0.5);
+
+		uint32_t value = 0;
+		value |= CLAMP(int(n.x * 1023.0), 0, 1023);
+		value |= CLAMP(int(n.y * 1023.0), 0, 1023) << 10;
+		value |= CLAMP(int(n.z * 1023.0), 0, 1023) << 20;
+
+		v_normal = value;
+	}
+	uint32_t v_tangent;
+	{
+		Plane t = tangent;
+		uint32_t value = 0;
+		value |= CLAMP(int((t.normal.x * 0.5 + 0.5) * 1023.0), 0, 1023);
+		value |= CLAMP(int((t.normal.y * 0.5 + 0.5) * 1023.0), 0, 1023) << 10;
+		value |= CLAMP(int((t.normal.z * 0.5 + 0.5) * 1023.0), 0, 1023) << 20;
+		if (t.d > 0) {
+			value |= 3 << 30;
+		}
+		v_tangent = value;
+	}
 
-		RS::get_singleton()->immediate_normal(immediate, normal);
-		RS::get_singleton()->immediate_tangent(immediate, tangent);
-		RS::get_singleton()->immediate_color(immediate, color);
-		RS::get_singleton()->immediate_uv(immediate, uvs[index[i]]);
+	uint16_t v_color[4] = {
+		Math::make_half_float(color.r),
+		Math::make_half_float(color.g),
+		Math::make_half_float(color.b),
+		Math::make_half_float(color.a),
+	};
 
+	for (int i = 0; i < 4; i++) {
 		Vector3 vtx;
-		vtx[x_axis] = vertices[index[i]][0];
-		vtx[y_axis] = vertices[index[i]][1];
-		RS::get_singleton()->immediate_vertex(immediate, vtx);
+		vtx[x_axis] = vertices[i][0];
+		vtx[y_axis] = vertices[i][1];
 		if (i == 0) {
 			aabb.position = vtx;
 			aabb.size = Vector3();
 		} else {
 			aabb.expand_to(vtx);
 		}
+
+		float v_uv[2] = { uvs[i].x, uvs[i].y };
+		memcpy(&attribute_write_buffer[i * attrib_stride + mesh_surface_offsets[RS::ARRAY_TEX_UV]], v_uv, 8);
+
+		float v_vertex[3] = { vtx.x, vtx.y, vtx.z };
+
+		memcpy(&vertex_write_buffer[i * vertex_stride + mesh_surface_offsets[RS::ARRAY_VERTEX]], &v_vertex, sizeof(float) * 3);
+		memcpy(&vertex_write_buffer[i * vertex_stride + mesh_surface_offsets[RS::ARRAY_NORMAL]], &v_normal, 4);
+		memcpy(&vertex_write_buffer[i * vertex_stride + mesh_surface_offsets[RS::ARRAY_TANGENT]], &v_tangent, 4);
+		memcpy(&attribute_write_buffer[i * attrib_stride + mesh_surface_offsets[RS::ARRAY_COLOR]], v_color, 8);
 	}
+
+	RID mesh = get_mesh();
+	RS::get_singleton()->mesh_surface_update_vertex_region(mesh, 0, 0, vertex_buffer);
+	RS::get_singleton()->mesh_surface_update_attribute_region(mesh, 0, 0, attribute_buffer);
+
+	RS::get_singleton()->mesh_set_custom_aabb(mesh, aabb);
 	set_aabb(aabb);
-	RS::get_singleton()->immediate_end(immediate);
-}
 
-void Sprite3D::_texture_changed() {
-	_queue_update();
+	RID shader_rid;
+	StandardMaterial3D::get_material_for_2d(get_draw_flag(FLAG_SHADED), get_draw_flag(FLAG_TRANSPARENT), get_draw_flag(FLAG_DOUBLE_SIDED), get_alpha_cut_mode() == ALPHA_CUT_DISCARD, get_alpha_cut_mode() == ALPHA_CUT_OPAQUE_PREPASS, get_billboard_mode() == StandardMaterial3D::BILLBOARD_ENABLED, get_billboard_mode() == StandardMaterial3D::BILLBOARD_FIXED_Y, &shader_rid);
+	if (last_shader != shader_rid) {
+		RS::get_singleton()->material_set_shader(get_material(), shader_rid);
+		last_shader = shader_rid;
+	}
+	if (last_texture != texture->get_rid()) {
+		RS::get_singleton()->material_set_param(get_material(), "texture_albedo", texture->get_rid());
+		last_texture = texture->get_rid();
+	}
 }
 
 void Sprite3D::set_texture(const Ref<Texture2D> &p_texture) {
@@ -498,38 +618,36 @@ void Sprite3D::set_texture(const Ref<Texture2D> &p_texture) {
 		return;
 	}
 	if (texture.is_valid()) {
-		texture->disconnect(CoreStringNames::get_singleton()->changed, callable_mp(this, &Sprite3D::_texture_changed));
+		texture->disconnect(CoreStringNames::get_singleton()->changed, Callable(this, "_queue_update"));
 	}
 	texture = p_texture;
 	if (texture.is_valid()) {
-		texture->connect(CoreStringNames::get_singleton()->changed, callable_mp(this, &Sprite3D::_texture_changed));
+		texture->connect(CoreStringNames::get_singleton()->changed, Callable(this, "_queue_update"));
 	}
 	_queue_update();
-	emit_signal(SceneStringNames::get_singleton()->texture_changed);
 }
 
 Ref<Texture2D> Sprite3D::get_texture() const {
 	return texture;
 }
 
-void Sprite3D::set_region_enabled(bool p_region_enabled) {
-	if (p_region_enabled == region_enabled) {
+void Sprite3D::set_region_enabled(bool p_region) {
+	if (p_region == region) {
 		return;
 	}
 
-	region_enabled = p_region_enabled;
+	region = p_region;
 	_queue_update();
-	notify_property_list_changed();
 }
 
 bool Sprite3D::is_region_enabled() const {
-	return region_enabled;
+	return region;
 }
 
 void Sprite3D::set_region_rect(const Rect2 &p_region_rect) {
 	bool changed = region_rect != p_region_rect;
 	region_rect = p_region_rect;
-	if (region_enabled && changed) {
+	if (region && changed) {
 		_queue_update();
 	}
 }
@@ -596,7 +714,7 @@ Rect2 Sprite3D::get_item_rect() const {
 
 	Size2i s;
 
-	if (region_enabled) {
+	if (region) {
 		s = region_rect.size;
 	} else {
 		s = texture->get_size();
@@ -625,10 +743,6 @@ void Sprite3D::_validate_property(PropertyInfo &property) const {
 	if (property.name == "frame_coords") {
 		property.usage |= PROPERTY_USAGE_KEYING_INCREMENTS;
 	}
-
-	if (!region_enabled && property.name == "region_rect") {
-		property.usage = PROPERTY_USAGE_NOEDITOR;
-	}
 }
 
 void Sprite3D::_bind_methods() {
@@ -653,32 +767,28 @@ void Sprite3D::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_hframes", "hframes"), &Sprite3D::set_hframes);
 	ClassDB::bind_method(D_METHOD("get_hframes"), &Sprite3D::get_hframes);
 
-	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "texture", PROPERTY_HINT_RESOURCE_TYPE, "Texture2D"), "set_texture", "get_texture");
+	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "texture", PROPERTY_HINT_RESOURCE_TYPE, "Texture"), "set_texture", "get_texture");
 	ADD_GROUP("Animation", "");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "hframes", PROPERTY_HINT_RANGE, "1,16384,1"), "set_hframes", "get_hframes");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "vframes", PROPERTY_HINT_RANGE, "1,16384,1"), "set_vframes", "get_vframes");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "frame"), "set_frame", "get_frame");
-	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2I, "frame_coords", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_EDITOR), "set_frame_coords", "get_frame_coords");
+	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "frame_coords", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_EDITOR), "set_frame_coords", "get_frame_coords");
 	ADD_GROUP("Region", "region_");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "region_enabled"), "set_region_enabled", "is_region_enabled");
 	ADD_PROPERTY(PropertyInfo(Variant::RECT2, "region_rect"), "set_region_rect", "get_region_rect");
 
 	ADD_SIGNAL(MethodInfo("frame_changed"));
-	ADD_SIGNAL(MethodInfo("texture_changed"));
 }
 
 Sprite3D::Sprite3D() {
-	region_enabled = false;
-	frame = 0;
-	vframes = 1;
-	hframes = 1;
 }
 
 ////////////////////////////////////////
 
 void AnimatedSprite3D::_draw() {
-	RID immediate = get_immediate();
-	RS::get_singleton()->immediate_clear(immediate);
+	if (get_base() != get_mesh()) {
+		set_base(get_mesh());
+	}
 
 	if (frames.is_null()) {
 		return;
@@ -694,7 +804,8 @@ void AnimatedSprite3D::_draw() {
 
 	Ref<Texture2D> texture = frames->get_frame(animation, frame);
 	if (!texture.is_valid()) {
-		return; //no texture no life
+		set_base(RID());
+		return; //no texuture no life
 	}
 	Vector2 tsize = texture->get_size();
 	if (tsize.x == 0 || tsize.y == 0) {
@@ -729,6 +840,7 @@ void AnimatedSprite3D::_draw() {
 	float pixel_size = get_pixel_size();
 
 	Vector2 vertices[4] = {
+
 		(final_rect.position + Vector2(0, final_rect.size.y)) * pixel_size,
 		(final_rect.position + final_rect.size) * pixel_size,
 		(final_rect.position + Vector2(final_rect.size.x, 0)) * pixel_size,
@@ -772,12 +884,6 @@ void AnimatedSprite3D::_draw() {
 		tangent = Plane(1, 0, 0, -1);
 	}
 
-	RID mat = StandardMaterial3D::get_material_rid_for_2d(get_draw_flag(FLAG_SHADED), get_draw_flag(FLAG_TRANSPARENT), get_draw_flag(FLAG_DOUBLE_SIDED), get_alpha_cut_mode() == ALPHA_CUT_DISCARD, get_alpha_cut_mode() == ALPHA_CUT_OPAQUE_PREPASS, get_billboard_mode() == StandardMaterial3D::BILLBOARD_ENABLED, get_billboard_mode() == StandardMaterial3D::BILLBOARD_FIXED_Y);
-
-	RS::get_singleton()->immediate_set_material(immediate, mat);
-
-	RS::get_singleton()->immediate_begin(immediate, RS::PRIMITIVE_TRIANGLES, texture->get_rid());
-
 	int x_axis = ((axis + 1) % 3);
 	int y_axis = ((axis + 2) % 3);
 
@@ -797,30 +903,79 @@ void AnimatedSprite3D::_draw() {
 
 	AABB aabb;
 
-	for (int i = 0; i < 6; i++) {
-		static const int indices[6] = {
-			0, 1, 2,
-			0, 2, 3
-		};
+	// Everything except position and UV is compressed
+	uint8_t *vertex_write_buffer = vertex_buffer.ptrw();
+	uint8_t *attribute_write_buffer = attribute_buffer.ptrw();
+
+	uint32_t v_normal;
+	{
+		Vector3 n = normal * Vector3(0.5, 0.5, 0.5) + Vector3(0.5, 0.5, 0.5);
+
+		uint32_t value = 0;
+		value |= CLAMP(int(n.x * 1023.0), 0, 1023);
+		value |= CLAMP(int(n.y * 1023.0), 0, 1023) << 10;
+		value |= CLAMP(int(n.z * 1023.0), 0, 1023) << 20;
+
+		v_normal = value;
+	}
+	uint32_t v_tangent;
+	{
+		Plane t = tangent;
+		uint32_t value = 0;
+		value |= CLAMP(int((t.normal.x * 0.5 + 0.5) * 1023.0), 0, 1023);
+		value |= CLAMP(int((t.normal.y * 0.5 + 0.5) * 1023.0), 0, 1023) << 10;
+		value |= CLAMP(int((t.normal.z * 0.5 + 0.5) * 1023.0), 0, 1023) << 20;
+		if (t.d > 0) {
+			value |= 3 << 30;
+		}
+		v_tangent = value;
+	}
 
-		RS::get_singleton()->immediate_normal(immediate, normal);
-		RS::get_singleton()->immediate_tangent(immediate, tangent);
-		RS::get_singleton()->immediate_color(immediate, color);
-		RS::get_singleton()->immediate_uv(immediate, uvs[indices[i]]);
+	uint16_t v_color[4] = {
+		Math::make_half_float(color.r),
+		Math::make_half_float(color.g),
+		Math::make_half_float(color.b),
+		Math::make_half_float(color.a),
+	};
 
+	for (int i = 0; i < 4; i++) {
 		Vector3 vtx;
-		vtx[x_axis] = vertices[indices[i]][0];
-		vtx[y_axis] = vertices[indices[i]][1];
-		RS::get_singleton()->immediate_vertex(immediate, vtx);
+		vtx[x_axis] = vertices[i][0];
+		vtx[y_axis] = vertices[i][1];
 		if (i == 0) {
 			aabb.position = vtx;
 			aabb.size = Vector3();
 		} else {
 			aabb.expand_to(vtx);
 		}
+
+		float v_uv[2] = { uvs[i].x, uvs[i].y };
+		memcpy(&attribute_write_buffer[i * attrib_stride + mesh_surface_offsets[RS::ARRAY_TEX_UV]], v_uv, 8);
+
+		float v_vertex[3] = { vtx.x, vtx.y, vtx.z };
+		memcpy(&vertex_write_buffer[i * vertex_stride + mesh_surface_offsets[RS::ARRAY_VERTEX]], &v_vertex, sizeof(float) * 3);
+		memcpy(&vertex_write_buffer[i * vertex_stride + mesh_surface_offsets[RS::ARRAY_NORMAL]], &v_normal, 4);
+		memcpy(&vertex_write_buffer[i * vertex_stride + mesh_surface_offsets[RS::ARRAY_TANGENT]], &v_tangent, 4);
+		memcpy(&attribute_write_buffer[i * attrib_stride + mesh_surface_offsets[RS::ARRAY_COLOR]], v_color, 8);
 	}
+
+	RID mesh = get_mesh();
+	RS::get_singleton()->mesh_surface_update_vertex_region(mesh, 0, 0, vertex_buffer);
+	RS::get_singleton()->mesh_surface_update_attribute_region(mesh, 0, 0, attribute_buffer);
+
+	RS::get_singleton()->mesh_set_custom_aabb(mesh, aabb);
 	set_aabb(aabb);
-	RS::get_singleton()->immediate_end(immediate);
+
+	RID shader_rid;
+	StandardMaterial3D::get_material_for_2d(get_draw_flag(FLAG_SHADED), get_draw_flag(FLAG_TRANSPARENT), get_draw_flag(FLAG_DOUBLE_SIDED), get_alpha_cut_mode() == ALPHA_CUT_DISCARD, get_alpha_cut_mode() == ALPHA_CUT_OPAQUE_PREPASS, get_billboard_mode() == StandardMaterial3D::BILLBOARD_ENABLED, get_billboard_mode() == StandardMaterial3D::BILLBOARD_FIXED_Y, &shader_rid);
+	if (last_shader != shader_rid) {
+		RS::get_singleton()->material_set_shader(get_material(), shader_rid);
+		last_shader = shader_rid;
+	}
+	if (last_texture != texture->get_rid()) {
+		RS::get_singleton()->material_set_param(get_material(), "texture_albedo", texture->get_rid());
+		last_texture = texture->get_rid();
+	}
 }
 
 void AnimatedSprite3D::_validate_property(PropertyInfo &property) const {
@@ -914,11 +1069,11 @@ void AnimatedSprite3D::_notification(int p_what) {
 
 void AnimatedSprite3D::set_sprite_frames(const Ref<SpriteFrames> &p_frames) {
 	if (frames.is_valid()) {
-		frames->disconnect("changed", callable_mp(this, &AnimatedSprite3D::_res_changed));
+		frames->disconnect("changed", Callable(this, "_res_changed"));
 	}
 	frames = p_frames;
 	if (frames.is_valid()) {
-		frames->connect("changed", callable_mp(this, &AnimatedSprite3D::_res_changed));
+		frames->connect("changed", Callable(this, "_res_changed"));
 	}
 
 	if (!frames.is_valid()) {
@@ -944,9 +1099,8 @@ void AnimatedSprite3D::set_frame(int p_frame) {
 
 	if (frames->has_animation(animation)) {
 		int limit = frames->get_frame_count(animation);
-		if (p_frame >= limit) {
+		if (p_frame >= limit)
 			p_frame = limit - 1;
-		}
 	}
 
 	if (p_frame < 0) {
@@ -960,7 +1114,6 @@ void AnimatedSprite3D::set_frame(int p_frame) {
 	frame = p_frame;
 	_reset_timeout();
 	_queue_update();
-
 	emit_signal(SceneStringNames::get_singleton()->frame_changed);
 }
 
@@ -1061,8 +1214,7 @@ StringName AnimatedSprite3D::get_animation() const {
 }
 
 TypedArray<String> AnimatedSprite3D::get_configuration_warnings() const {
-	TypedArray<String> warnings = Node::get_configuration_warnings();
-
+	TypedArray<String> warnings = SpriteBase3D::get_configuration_warnings();
 	if (frames.is_null()) {
 		warnings.push_back(TTR("A SpriteFrames resource must be created or set in the \"Frames\" property in order for AnimatedSprite3D to display frames."));
 	}
@@ -1087,11 +1239,13 @@ void AnimatedSprite3D::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_frame", "frame"), &AnimatedSprite3D::set_frame);
 	ClassDB::bind_method(D_METHOD("get_frame"), &AnimatedSprite3D::get_frame);
 
+	ClassDB::bind_method(D_METHOD("_res_changed"), &AnimatedSprite3D::_res_changed);
+
 	ADD_SIGNAL(MethodInfo("frame_changed"));
 	ADD_SIGNAL(MethodInfo("animation_finished"));
 
 	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "frames", PROPERTY_HINT_RESOURCE_TYPE, "SpriteFrames"), "set_sprite_frames", "get_sprite_frames");
-	ADD_PROPERTY(PropertyInfo(Variant::STRING_NAME, "animation"), "set_animation", "get_animation");
+	ADD_PROPERTY(PropertyInfo(Variant::STRING, "animation"), "set_animation", "get_animation");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "frame"), "set_frame", "get_frame");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "playing"), "_set_playing", "_is_playing");
 }
diff --git a/scene/3d/sprite_3d.h b/scene/3d/sprite_3d.h
index e3dd117804..404ef57e6a 100644
--- a/scene/3d/sprite_3d.h
+++ b/scene/3d/sprite_3d.h
@@ -31,8 +31,8 @@
 #ifndef SPRITE_3D_H
 #define SPRITE_3D_H
 
+#include "scene/2d/animated_sprite_2d.h"
 #include "scene/3d/visual_instance_3d.h"
-#include "scene/resources/sprite_frames.h"
 
 class SpriteBase3D : public GeometryInstance3D {
 	GDCLASS(SpriteBase3D, GeometryInstance3D);
@@ -75,9 +75,10 @@ private:
 	float pixel_size = 0.01;
 	AABB aabb;
 
-	RID immediate;
+	RID mesh;
+	RID material;
 
-	bool flags[FLAG_MAX];
+	bool flags[FLAG_MAX] = {};
 	AlphaCutMode alpha_cut = ALPHA_CUT_DISABLED;
 	StandardMaterial3D::BillboardMode billboard_mode = StandardMaterial3D::BILLBOARD_DISABLED;
 	bool pending_update = false;
@@ -91,7 +92,17 @@ protected:
 	static void _bind_methods();
 	virtual void _draw() = 0;
 	_FORCE_INLINE_ void set_aabb(const AABB &p_aabb) { aabb = p_aabb; }
-	_FORCE_INLINE_ RID &get_immediate() { return immediate; }
+	_FORCE_INLINE_ RID &get_mesh() { return mesh; }
+	_FORCE_INLINE_ RID &get_material() { return material; }
+
+	uint32_t mesh_surface_offsets[RS::ARRAY_MAX];
+	PackedByteArray vertex_buffer;
+	PackedByteArray attribute_buffer;
+	uint32_t vertex_stride;
+	uint32_t attrib_stride;
+	uint32_t skin_stride;
+	uint32_t mesh_surface_format;
+
 	void _queue_update();
 
 public:
@@ -107,7 +118,7 @@ public:
 	void set_flip_v(bool p_flip);
 	bool is_flipped_v() const;
 
-	void set_region_enabled(bool p_region_enabled);
+	void set_region_enabled(bool p_region);
 	bool is_region_enabled() const;
 
 	void set_region_rect(const Rect2 &p_region_rect);
@@ -147,15 +158,16 @@ class Sprite3D : public SpriteBase3D {
 	GDCLASS(Sprite3D, SpriteBase3D);
 	Ref<Texture2D> texture;
 
-	bool region_enabled;
+	bool region = false;
 	Rect2 region_rect;
 
-	int frame;
+	int frame = 0;
 
-	int vframes;
-	int hframes;
+	int vframes = 1;
+	int hframes = 1;
 
-	void _texture_changed();
+	RID last_shader;
+	RID last_texture;
 
 protected:
 	virtual void _draw() override;
@@ -167,7 +179,7 @@ public:
 	void set_texture(const Ref<Texture2D> &p_texture);
 	Ref<Texture2D> get_texture() const;
 
-	void set_region_enabled(bool p_region_enabled);
+	void set_region_enabled(bool p_region);
 	bool is_region_enabled() const;
 
 	void set_region_rect(const Rect2 &p_region_rect);
@@ -199,14 +211,9 @@ class AnimatedSprite3D : public SpriteBase3D {
 	StringName animation = "default";
 	int frame = 0;
 
-	bool centered = true;
-
-	float timeout = 0.0;
-
-	bool hflip = true;
-	bool vflip = true;
+	bool centered = false;
 
-	Color modulate;
+	float timeout = 0;
 
 	void _res_changed();
 
@@ -214,6 +221,9 @@ class AnimatedSprite3D : public SpriteBase3D {
 	void _set_playing(bool p_playing);
 	bool _is_playing() const;
 
+	RID last_shader;
+	RID last_texture;
+
 protected:
 	virtual void _draw() override;
 	static void _bind_methods();
@@ -236,10 +246,11 @@ public:
 
 	virtual Rect2 get_item_rect() const override;
 
-	TypedArray<String> get_configuration_warnings() const override;
+	virtual TypedArray<String> get_configuration_warnings() const override;
 	AnimatedSprite3D();
 };
 
 VARIANT_ENUM_CAST(SpriteBase3D::DrawFlags);
 VARIANT_ENUM_CAST(SpriteBase3D::AlphaCutMode);
+
 #endif // SPRITE_3D_H
diff --git a/scene/animation/root_motion_view.cpp b/scene/animation/root_motion_view.cpp
index b963cf5702..770996820d 100644
--- a/scene/animation/root_motion_view.cpp
+++ b/scene/animation/root_motion_view.cpp
@@ -77,7 +77,7 @@ bool RootMotionView::get_zero_y() const {
 
 void RootMotionView::_notification(int p_what) {
 	if (p_what == NOTIFICATION_ENTER_TREE) {
-		RS::get_singleton()->immediate_set_material(immediate, StandardMaterial3D::get_material_rid_for_2d(false, true, false, false, false));
+		immediate_material = StandardMaterial3D::get_material_for_2d(false, true, false, false, false);
 		first = true;
 	}
 
@@ -119,11 +119,12 @@ void RootMotionView::_notification(int p_what) {
 		}
 		accumulated.origin.z = Math::fposmod(accumulated.origin.z, cell_size);
 
-		RS::get_singleton()->immediate_clear(immediate);
+		immediate->clear_surfaces();
 
 		int cells_in_radius = int((radius / cell_size) + 1.0);
 
-		RS::get_singleton()->immediate_begin(immediate, RS::PRIMITIVE_LINES);
+		immediate->surface_begin(Mesh::PRIMITIVE_LINES, immediate_material);
+
 		for (int i = -cells_in_radius; i < cells_in_radius; i++) {
 			for (int j = -cells_in_radius; j < cells_in_radius; j++) {
 				Vector3 from(i * cell_size, 0, j * cell_size);
@@ -138,21 +139,21 @@ void RootMotionView::_notification(int p_what) {
 				c_i.a *= MAX(0, 1.0 - from_i.length() / radius);
 				c_j.a *= MAX(0, 1.0 - from_j.length() / radius);
 
-				RS::get_singleton()->immediate_color(immediate, c);
-				RS::get_singleton()->immediate_vertex(immediate, from);
+				immediate->surface_set_color(c);
+				immediate->surface_add_vertex(from);
 
-				RS::get_singleton()->immediate_color(immediate, c_i);
-				RS::get_singleton()->immediate_vertex(immediate, from_i);
+				immediate->surface_set_color(c_i);
+				immediate->surface_add_vertex(from_i);
 
-				RS::get_singleton()->immediate_color(immediate, c);
-				RS::get_singleton()->immediate_vertex(immediate, from);
+				immediate->surface_set_color(c);
+				immediate->surface_add_vertex(from);
 
-				RS::get_singleton()->immediate_color(immediate, c_j);
-				RS::get_singleton()->immediate_vertex(immediate, from_j);
+				immediate->surface_set_color(c_j);
+				immediate->surface_add_vertex(from_j);
 			}
 		}
 
-		RS::get_singleton()->immediate_end(immediate);
+		immediate->surface_end();
 	}
 }
 
@@ -188,12 +189,13 @@ void RootMotionView::_bind_methods() {
 }
 
 RootMotionView::RootMotionView() {
-	set_process_internal(true);
-	immediate = RenderingServer::get_singleton()->immediate_create();
-	set_base(immediate);
+	if (Engine::get_singleton()->is_editor_hint()) {
+		set_process_internal(true);
+	}
+	immediate.instantiate();
+	set_base(immediate->get_rid());
 }
 
 RootMotionView::~RootMotionView() {
 	set_base(RID());
-	RenderingServer::get_singleton()->free(immediate);
 }
diff --git a/scene/animation/root_motion_view.h b/scene/animation/root_motion_view.h
index 4cd3c7b443..55fd2d2b73 100644
--- a/scene/animation/root_motion_view.h
+++ b/scene/animation/root_motion_view.h
@@ -32,12 +32,12 @@
 #define ROOT_MOTION_VIEW_H
 
 #include "scene/3d/visual_instance_3d.h"
-
+#include "scene/resources/immediate_mesh.h"
 class RootMotionView : public VisualInstance3D {
 	GDCLASS(RootMotionView, VisualInstance3D);
 
 public:
-	RID immediate;
+	Ref<ImmediateMesh> immediate;
 	NodePath path;
 	float cell_size = 1.0;
 	float radius = 10.0;
@@ -46,6 +46,8 @@ public:
 	bool first = true;
 	bool zero_y = true;
 
+	Ref<Material> immediate_material;
+
 	Transform3D accumulated;
 
 private:
diff --git a/scene/register_scene_types.cpp b/scene/register_scene_types.cpp
index 8d0283d536..d069d5e963 100644
--- a/scene/register_scene_types.cpp
+++ b/scene/register_scene_types.cpp
@@ -147,6 +147,7 @@
 #include "scene/resources/font.h"
 #include "scene/resources/gradient.h"
 #include "scene/resources/height_map_shape_3d.h"
+#include "scene/resources/immediate_mesh.h"
 #include "scene/resources/line_shape_2d.h"
 #include "scene/resources/material.h"
 #include "scene/resources/mesh.h"
@@ -204,7 +205,6 @@
 #include "scene/3d/decal.h"
 #include "scene/3d/gpu_particles_3d.h"
 #include "scene/3d/gpu_particles_collision_3d.h"
-#include "scene/3d/immediate_geometry_3d.h"
 #include "scene/3d/light_3d.h"
 #include "scene/3d/lightmap_gi.h"
 #include "scene/3d/lightmap_probe.h"
@@ -459,7 +459,6 @@ void register_scene_types() {
 	ClassDB::register_class<MeshInstance3D>();
 	ClassDB::register_class<OccluderInstance3D>();
 	ClassDB::register_class<Occluder3D>();
-	ClassDB::register_class<ImmediateGeometry3D>();
 	ClassDB::register_virtual_class<SpriteBase3D>();
 	ClassDB::register_class<Sprite3D>();
 	ClassDB::register_class<AnimatedSprite3D>();
@@ -718,6 +717,7 @@ void register_scene_types() {
 
 	ClassDB::register_virtual_class<Mesh>();
 	ClassDB::register_class<ArrayMesh>();
+	ClassDB::register_class<ImmediateMesh>();
 	ClassDB::register_class<MultiMesh>();
 	ClassDB::register_class<SurfaceTool>();
 	ClassDB::register_class<MeshDataTool>();
diff --git a/scene/resources/immediate_mesh.cpp b/scene/resources/immediate_mesh.cpp
new file mode 100644
index 0000000000..95de85aeba
--- /dev/null
+++ b/scene/resources/immediate_mesh.cpp
@@ -0,0 +1,416 @@
+/*************************************************************************/
+/*  immediate_mesh.cpp                                                   */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "immediate_mesh.h"
+
+void ImmediateMesh::surface_begin(PrimitiveType p_primitive, const Ref<Material> &p_material) {
+	ERR_FAIL_COND_MSG(surface_active, "Already creating a new surface.");
+	active_surface_data.primitive = p_primitive;
+	active_surface_data.material = p_material;
+	surface_active = true;
+}
+void ImmediateMesh::surface_set_color(const Color &p_color) {
+	ERR_FAIL_COND_MSG(!surface_active, "Not creating any surface. Use surface_begin() to do it.");
+
+	if (!uses_colors) {
+		colors.resize(vertices.size());
+		for (uint32_t i = 0; i < colors.size(); i++) {
+			colors[i] = p_color;
+		}
+		uses_colors = true;
+	}
+
+	current_color = p_color;
+}
+void ImmediateMesh::surface_set_normal(const Vector3 &p_normal) {
+	ERR_FAIL_COND_MSG(!surface_active, "Not creating any surface. Use surface_begin() to do it.");
+
+	if (!uses_normals) {
+		normals.resize(vertices.size());
+		for (uint32_t i = 0; i < normals.size(); i++) {
+			normals[i] = p_normal;
+		}
+		uses_normals = true;
+	}
+
+	current_normal = p_normal;
+}
+void ImmediateMesh::surface_set_tangent(const Plane &p_tangent) {
+	ERR_FAIL_COND_MSG(!surface_active, "Not creating any surface. Use surface_begin() to do it.");
+	if (!uses_tangents) {
+		tangents.resize(vertices.size());
+		for (uint32_t i = 0; i < tangents.size(); i++) {
+			tangents[i] = p_tangent;
+		}
+		uses_tangents = true;
+	}
+
+	current_tangent = p_tangent;
+}
+void ImmediateMesh::surface_set_uv(const Vector2 &p_uv) {
+	ERR_FAIL_COND_MSG(!surface_active, "Not creating any surface. Use surface_begin() to do it.");
+	if (!uses_uvs) {
+		uvs.resize(vertices.size());
+		for (uint32_t i = 0; i < uvs.size(); i++) {
+			uvs[i] = p_uv;
+		}
+		uses_uvs = true;
+	}
+
+	current_uv = p_uv;
+}
+void ImmediateMesh::surface_set_uv2(const Vector2 &p_uv2) {
+	ERR_FAIL_COND_MSG(!surface_active, "Not creating any surface. Use surface_begin() to do it.");
+	if (!uses_uv2s) {
+		uv2s.resize(vertices.size());
+		for (uint32_t i = 0; i < uv2s.size(); i++) {
+			uv2s[i] = p_uv2;
+		}
+		uses_uv2s = true;
+	}
+
+	current_uv2 = p_uv2;
+}
+void ImmediateMesh::surface_add_vertex(const Vector3 &p_vertex) {
+	ERR_FAIL_COND_MSG(!surface_active, "Not creating any surface. Use surface_begin() to do it.");
+	ERR_FAIL_COND_MSG(vertices.size() && active_surface_data.vertex_2d, "Can't mix 2D and 3D vertices in a surface.");
+
+	if (uses_colors) {
+		colors.push_back(current_color);
+	}
+	if (uses_normals) {
+		normals.push_back(current_normal);
+	}
+	if (uses_tangents) {
+		tangents.push_back(current_tangent);
+	}
+	if (uses_uvs) {
+		uvs.push_back(current_uv);
+	}
+	if (uses_uv2s) {
+		uv2s.push_back(current_uv2);
+	}
+	vertices.push_back(p_vertex);
+}
+
+void ImmediateMesh::surface_add_vertex_2d(const Vector2 &p_vertex) {
+	ERR_FAIL_COND_MSG(!surface_active, "Not creating any surface. Use surface_begin() to do it.");
+	ERR_FAIL_COND_MSG(vertices.size() && !active_surface_data.vertex_2d, "Can't mix 2D and 3D vertices in a surface.");
+
+	if (uses_colors) {
+		colors.push_back(current_color);
+	}
+	if (uses_normals) {
+		normals.push_back(current_normal);
+	}
+	if (uses_tangents) {
+		tangents.push_back(current_tangent);
+	}
+	if (uses_uvs) {
+		uvs.push_back(current_uv);
+	}
+	if (uses_uv2s) {
+		uv2s.push_back(current_uv2);
+	}
+	Vector3 v(p_vertex.x, p_vertex.y, 0);
+	vertices.push_back(v);
+
+	active_surface_data.vertex_2d = true;
+}
+void ImmediateMesh::surface_end() {
+	ERR_FAIL_COND_MSG(!surface_active, "Not creating any surface. Use surface_begin() to do it.");
+	ERR_FAIL_COND_MSG(!vertices.size(), "No vertices were added, surface cant be created.");
+
+	uint32_t format = ARRAY_FORMAT_VERTEX;
+
+	uint32_t vertex_stride = 0;
+	if (active_surface_data.vertex_2d) {
+		format |= ARRAY_FLAG_USE_2D_VERTICES;
+		vertex_stride = sizeof(float) * 2;
+	} else {
+		vertex_stride = sizeof(float) * 3;
+	}
+
+	uint32_t normal_offset = 0;
+	if (uses_normals) {
+		format |= ARRAY_FORMAT_NORMAL;
+		normal_offset = vertex_stride;
+		vertex_stride += sizeof(uint32_t);
+	}
+	uint32_t tangent_offset = 0;
+	if (uses_tangents) {
+		format |= ARRAY_FORMAT_TANGENT;
+		tangent_offset += vertex_stride;
+		vertex_stride += sizeof(uint32_t);
+	}
+
+	AABB aabb;
+
+	{
+		surface_vertex_create_cache.resize(vertex_stride * vertices.size());
+		uint8_t *surface_vertex_ptr = surface_vertex_create_cache.ptrw();
+		for (uint32_t i = 0; i < vertices.size(); i++) {
+			{
+				float *vtx = (float *)&surface_vertex_ptr[i * vertex_stride];
+				vtx[0] = vertices[i].x;
+				vtx[1] = vertices[i].y;
+				if (!active_surface_data.vertex_2d) {
+					vtx[2] = vertices[i].z;
+				}
+				if (i == 0) {
+					aabb.position = vertices[i];
+				} else {
+					aabb.expand_to(vertices[i]);
+				}
+			}
+			if (uses_normals) {
+				uint32_t *normal = (uint32_t *)&surface_vertex_ptr[i * vertex_stride + normal_offset];
+
+				Vector3 n = normals[i] * Vector3(0.5, 0.5, 0.5) + Vector3(0.5, 0.5, 0.5);
+
+				uint32_t value = 0;
+				value |= CLAMP(int(n.x * 1023.0), 0, 1023);
+				value |= CLAMP(int(n.y * 1023.0), 0, 1023) << 10;
+				value |= CLAMP(int(n.z * 1023.0), 0, 1023) << 20;
+
+				*normal = value;
+			}
+			if (uses_tangents) {
+				uint32_t *tangent = (uint32_t *)&surface_vertex_ptr[i * vertex_stride + tangent_offset];
+				Plane t = tangents[i];
+				uint32_t value = 0;
+				value |= CLAMP(int((t.normal.x * 0.5 + 0.5) * 1023.0), 0, 1023);
+				value |= CLAMP(int((t.normal.y * 0.5 + 0.5) * 1023.0), 0, 1023) << 10;
+				value |= CLAMP(int((t.normal.z * 0.5 + 0.5) * 1023.0), 0, 1023) << 20;
+				if (t.d > 0) {
+					value |= 3 << 30;
+				}
+
+				*tangent = value;
+			}
+		}
+	}
+
+	if (uses_colors || uses_uvs || uses_uv2s) {
+		uint32_t attribute_stride = 0;
+
+		if (uses_colors) {
+			format |= ARRAY_FORMAT_COLOR;
+			attribute_stride += sizeof(uint16_t) * 4;
+		}
+		uint32_t uv_offset = 0;
+		if (uses_uvs) {
+			format |= ARRAY_FORMAT_TEX_UV;
+			uv_offset = attribute_stride;
+			attribute_stride += sizeof(float) * 2;
+		}
+		uint32_t uv2_offset = 0;
+		if (uses_uv2s) {
+			format |= ARRAY_FORMAT_TEX_UV2;
+			uv2_offset = attribute_stride;
+			attribute_stride += sizeof(float) * 2;
+		}
+
+		surface_attribute_create_cache.resize(vertices.size() * attribute_stride);
+
+		uint8_t *surface_attribute_ptr = surface_attribute_create_cache.ptrw();
+
+		for (uint32_t i = 0; i < vertices.size(); i++) {
+			if (uses_colors) {
+				uint16_t *color16 = (uint16_t *)&surface_attribute_ptr[i * attribute_stride];
+
+				color16[0] = Math::make_half_float(colors[i].r);
+				color16[1] = Math::make_half_float(colors[i].g);
+				color16[2] = Math::make_half_float(colors[i].b);
+				color16[3] = Math::make_half_float(colors[i].a);
+			}
+			if (uses_uvs) {
+				float *uv = (float *)&surface_attribute_ptr[i * attribute_stride + uv_offset];
+
+				uv[0] = uvs[i].x;
+				uv[0] = uvs[i].y;
+			}
+
+			if (uses_uv2s) {
+				float *uv2 = (float *)&surface_attribute_ptr[i * attribute_stride + uv2_offset];
+
+				uv2[0] = uv2s[i].x;
+				uv2[0] = uv2s[i].y;
+			}
+		}
+	}
+
+	RS::SurfaceData sd;
+
+	sd.primitive = RS::PrimitiveType(active_surface_data.primitive);
+	sd.format = format;
+	sd.vertex_data = surface_vertex_create_cache;
+	if (uses_colors || uses_uvs || uses_uv2s) {
+		sd.attribute_data = surface_attribute_create_cache;
+	}
+	sd.vertex_count = vertices.size();
+	sd.aabb = aabb;
+	if (active_surface_data.material.is_valid()) {
+		sd.material = active_surface_data.material->get_rid();
+	}
+
+	RS::get_singleton()->mesh_add_surface(mesh, sd);
+
+	active_surface_data.aabb = aabb;
+
+	active_surface_data.format = format;
+	active_surface_data.array_len = vertices.size();
+
+	surfaces.push_back(active_surface_data);
+
+	colors.clear();
+	normals.clear();
+	tangents.clear();
+	uvs.clear();
+	uv2s.clear();
+	vertices.clear();
+
+	uses_colors = false;
+	uses_normals = false;
+	uses_tangents = false;
+	uses_uvs = false;
+	uses_uv2s = false;
+
+	surface_active = false;
+}
+
+void ImmediateMesh::clear_surfaces() {
+	RS::get_singleton()->mesh_clear(mesh);
+	surfaces.clear();
+	surface_active = false;
+
+	colors.clear();
+	normals.clear();
+	tangents.clear();
+	uvs.clear();
+	uv2s.clear();
+	vertices.clear();
+
+	uses_colors = false;
+	uses_normals = false;
+	uses_tangents = false;
+	uses_uvs = false;
+	uses_uv2s = false;
+}
+
+int ImmediateMesh::get_surface_count() const {
+	return surfaces.size();
+}
+int ImmediateMesh::surface_get_array_len(int p_idx) const {
+	ERR_FAIL_INDEX_V(p_idx, int(surfaces.size()), -1);
+	return surfaces[p_idx].array_len;
+}
+int ImmediateMesh::surface_get_array_index_len(int p_idx) const {
+	return 0;
+}
+bool ImmediateMesh::surface_is_softbody_friendly(int p_idx) const {
+	return false;
+}
+Array ImmediateMesh::surface_get_arrays(int p_surface) const {
+	ERR_FAIL_INDEX_V(p_surface, int(surfaces.size()), Array());
+	return RS::get_singleton()->mesh_surface_get_arrays(mesh, p_surface);
+}
+Array ImmediateMesh::surface_get_blend_shape_arrays(int p_surface) const {
+	return Array();
+}
+Dictionary ImmediateMesh::surface_get_lods(int p_surface) const {
+	return Dictionary();
+}
+uint32_t ImmediateMesh::surface_get_format(int p_idx) const {
+	ERR_FAIL_INDEX_V(p_idx, int(surfaces.size()), 0);
+	return surfaces[p_idx].format;
+}
+Mesh::PrimitiveType ImmediateMesh::surface_get_primitive_type(int p_idx) const {
+	ERR_FAIL_INDEX_V(p_idx, int(surfaces.size()), PRIMITIVE_MAX);
+	return surfaces[p_idx].primitive;
+}
+void ImmediateMesh::surface_set_material(int p_idx, const Ref<Material> &p_material) {
+	ERR_FAIL_INDEX(p_idx, int(surfaces.size()));
+	surfaces[p_idx].material = p_material;
+	RID mat;
+	if (p_material.is_valid()) {
+		mat = p_material->get_rid();
+	}
+	RS::get_singleton()->mesh_surface_set_material(mesh, p_idx, mat);
+}
+Ref<Material> ImmediateMesh::surface_get_material(int p_idx) const {
+	ERR_FAIL_INDEX_V(p_idx, int(surfaces.size()), Ref<Material>());
+	return surfaces[p_idx].material;
+}
+int ImmediateMesh::get_blend_shape_count() const {
+	return 0;
+}
+StringName ImmediateMesh::get_blend_shape_name(int p_index) const {
+	return StringName();
+}
+void ImmediateMesh::set_blend_shape_name(int p_index, const StringName &p_name) {
+}
+
+AABB ImmediateMesh::get_aabb() const {
+	AABB aabb;
+	for (uint32_t i = 0; i < surfaces.size(); i++) {
+		if (i == 0) {
+			aabb = surfaces[i].aabb;
+		} else {
+			aabb.merge(surfaces[i].aabb);
+		}
+	}
+	return aabb;
+}
+
+void ImmediateMesh::_bind_methods() {
+	ClassDB::bind_method(D_METHOD("surface_begin", "primitive", "material"), &ImmediateMesh::surface_begin, DEFVAL(Ref<Material>()));
+	ClassDB::bind_method(D_METHOD("surface_set_color", "color"), &ImmediateMesh::surface_set_color);
+	ClassDB::bind_method(D_METHOD("surface_set_normal", "normal"), &ImmediateMesh::surface_set_normal);
+	ClassDB::bind_method(D_METHOD("surface_set_tangent", "tangent"), &ImmediateMesh::surface_set_tangent);
+	ClassDB::bind_method(D_METHOD("surface_set_uv", "uv"), &ImmediateMesh::surface_set_uv);
+	ClassDB::bind_method(D_METHOD("surface_set_uv2", "uv2"), &ImmediateMesh::surface_set_uv2);
+	ClassDB::bind_method(D_METHOD("surface_add_vertex", "vertex"), &ImmediateMesh::surface_add_vertex);
+	ClassDB::bind_method(D_METHOD("surface_add_vertex_2d", "vertex"), &ImmediateMesh::surface_add_vertex_2d);
+	ClassDB::bind_method(D_METHOD("surface_end"), &ImmediateMesh::surface_end);
+
+	ClassDB::bind_method(D_METHOD("clear_surfaces"), &ImmediateMesh::clear_surfaces);
+}
+
+RID ImmediateMesh::get_rid() const {
+	return mesh;
+}
+
+ImmediateMesh::ImmediateMesh() {
+	mesh = RS::get_singleton()->mesh_create();
+}
+ImmediateMesh::~ImmediateMesh() {
+	RS::get_singleton()->free(mesh);
+}
diff --git a/scene/resources/immediate_mesh.h b/scene/resources/immediate_mesh.h
new file mode 100644
index 0000000000..7010d40719
--- /dev/null
+++ b/scene/resources/immediate_mesh.h
@@ -0,0 +1,117 @@
+/*************************************************************************/
+/*  immediate_mesh.h                                                     */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef IMMEDIATE_MESH_H
+#define IMMEDIATE_MESH_H
+
+#include "core/templates/local_vector.h"
+#include "scene/resources/mesh.h"
+
+class ImmediateMesh : public Mesh {
+	GDCLASS(ImmediateMesh, Mesh)
+
+	RID mesh;
+
+	bool uses_colors = false;
+	bool uses_normals = false;
+	bool uses_tangents = false;
+	bool uses_uvs = false;
+	bool uses_uv2s = false;
+
+	Color current_color;
+	Vector3 current_normal;
+	Plane current_tangent;
+	Vector2 current_uv;
+	Vector2 current_uv2;
+
+	LocalVector<Color> colors;
+	LocalVector<Vector3> normals;
+	LocalVector<Plane> tangents;
+	LocalVector<Vector2> uvs;
+	LocalVector<Vector2> uv2s;
+	LocalVector<Vector3> vertices;
+
+	struct Surface {
+		PrimitiveType primitive;
+		Ref<Material> material;
+		bool vertex_2d = false;
+		int array_len = 0;
+		uint32_t format = 0;
+		AABB aabb;
+	};
+
+	LocalVector<Surface> surfaces;
+
+	bool surface_active = false;
+	Surface active_surface_data;
+
+	Vector<uint8_t> surface_vertex_create_cache;
+	Vector<uint8_t> surface_attribute_create_cache;
+
+protected:
+	static void _bind_methods();
+
+public:
+	void surface_begin(PrimitiveType p_primitive, const Ref<Material> &p_material = Ref<Material>());
+	void surface_set_color(const Color &p_color);
+	void surface_set_normal(const Vector3 &p_normal);
+	void surface_set_tangent(const Plane &p_tangent);
+	void surface_set_uv(const Vector2 &p_uv);
+	void surface_set_uv2(const Vector2 &p_uv2);
+	void surface_add_vertex(const Vector3 &p_vertex);
+	void surface_add_vertex_2d(const Vector2 &p_vertex);
+	void surface_end();
+
+	void clear_surfaces();
+
+	virtual int get_surface_count() const override;
+	virtual int surface_get_array_len(int p_idx) const override;
+	virtual int surface_get_array_index_len(int p_idx) const override;
+	virtual bool surface_is_softbody_friendly(int p_idx) const override;
+	virtual Array surface_get_arrays(int p_surface) const override;
+	virtual Array surface_get_blend_shape_arrays(int p_surface) const override;
+	virtual Dictionary surface_get_lods(int p_surface) const override;
+	virtual uint32_t surface_get_format(int p_idx) const override;
+	virtual PrimitiveType surface_get_primitive_type(int p_idx) const override;
+	virtual void surface_set_material(int p_idx, const Ref<Material> &p_material) override;
+	virtual Ref<Material> surface_get_material(int p_idx) const override;
+	virtual int get_blend_shape_count() const override;
+	virtual StringName get_blend_shape_name(int p_index) const override;
+	virtual void set_blend_shape_name(int p_index, const StringName &p_name) override;
+
+	virtual AABB get_aabb() const override;
+
+	virtual RID get_rid() const override;
+
+	ImmediateMesh();
+	~ImmediateMesh();
+};
+
+#endif // IMMEDIATEMESH_H
diff --git a/scene/resources/material.cpp b/scene/resources/material.cpp
index cb66d5724d..d391540a0b 100644
--- a/scene/resources/material.cpp
+++ b/scene/resources/material.cpp
@@ -2077,7 +2077,7 @@ BaseMaterial3D::TextureChannel BaseMaterial3D::get_refraction_texture_channel()
 	return refraction_texture_channel;
 }
 
-RID BaseMaterial3D::get_material_rid_for_2d(bool p_shaded, bool p_transparent, bool p_double_sided, bool p_cut_alpha, bool p_opaque_prepass, bool p_billboard, bool p_billboard_y) {
+Ref<Material> BaseMaterial3D::get_material_for_2d(bool p_shaded, bool p_transparent, bool p_double_sided, bool p_cut_alpha, bool p_opaque_prepass, bool p_billboard, bool p_billboard_y, RID *r_shader_rid) {
 	int version = 0;
 	if (p_shaded) {
 		version = 1;
@@ -2102,7 +2102,10 @@ RID BaseMaterial3D::get_material_rid_for_2d(bool p_shaded, bool p_transparent, b
 	}
 
 	if (materials_for_2d[version].is_valid()) {
-		return materials_for_2d[version]->get_rid();
+		if (r_shader_rid) {
+			*r_shader_rid = materials_for_2d[version]->get_shader_rid();
+		}
+		return materials_for_2d[version];
 	}
 
 	Ref<StandardMaterial3D> material;
@@ -2120,7 +2123,11 @@ RID BaseMaterial3D::get_material_rid_for_2d(bool p_shaded, bool p_transparent, b
 
 	materials_for_2d[version] = material;
 
-	return materials_for_2d[version]->get_rid();
+	if (r_shader_rid) {
+		*r_shader_rid = materials_for_2d[version]->get_shader_rid();
+	}
+
+	return materials_for_2d[version];
 }
 
 void BaseMaterial3D::set_on_top_of_alpha() {
@@ -2189,6 +2196,8 @@ BaseMaterial3D::EmissionOperator BaseMaterial3D::get_emission_operator() const {
 }
 
 RID BaseMaterial3D::get_shader_rid() const {
+	MutexLock lock(material_mutex);
+	((BaseMaterial3D *)this)->_update_shader();
 	ERR_FAIL_COND_V(!shader_map.has(current_key), RID());
 	return shader_map[current_key].shader;
 }
diff --git a/scene/resources/material.h b/scene/resources/material.h
index dc3ecdb5de..cd91d05a60 100644
--- a/scene/resources/material.h
+++ b/scene/resources/material.h
@@ -738,7 +738,7 @@ public:
 	static void finish_shaders();
 	static void flush_changes();
 
-	static RID get_material_rid_for_2d(bool p_shaded, bool p_transparent, bool p_double_sided, bool p_cut_alpha, bool p_opaque_prepass, bool p_billboard = false, bool p_billboard_y = false);
+	static Ref<Material> get_material_for_2d(bool p_shaded, bool p_transparent, bool p_double_sided, bool p_cut_alpha, bool p_opaque_prepass, bool p_billboard = false, bool p_billboard_y = false, RID *r_shader_rid = nullptr);
 
 	virtual RID get_shader_rid() const override;
 
diff --git a/scene/resources/mesh.cpp b/scene/resources/mesh.cpp
index cf59c6fa22..ce942817c0 100644
--- a/scene/resources/mesh.cpp
+++ b/scene/resources/mesh.cpp
@@ -1335,9 +1335,21 @@ String ArrayMesh::surface_get_name(int p_idx) const {
 	return surfaces[p_idx].name;
 }
 
-void ArrayMesh::surface_update_region(int p_surface, int p_offset, const Vector<uint8_t> &p_data) {
+void ArrayMesh::surface_update_vertex_region(int p_surface, int p_offset, const Vector<uint8_t> &p_data) {
 	ERR_FAIL_INDEX(p_surface, surfaces.size());
-	RS::get_singleton()->mesh_surface_update_region(mesh, p_surface, p_offset, p_data);
+	RS::get_singleton()->mesh_surface_update_vertex_region(mesh, p_surface, p_offset, p_data);
+	emit_changed();
+}
+
+void ArrayMesh::surface_update_attribute_region(int p_surface, int p_offset, const Vector<uint8_t> &p_data) {
+	ERR_FAIL_INDEX(p_surface, surfaces.size());
+	RS::get_singleton()->mesh_surface_update_attribute_region(mesh, p_surface, p_offset, p_data);
+	emit_changed();
+}
+
+void ArrayMesh::surface_update_skin_region(int p_surface, int p_offset, const Vector<uint8_t> &p_data) {
+	ERR_FAIL_INDEX(p_surface, surfaces.size());
+	RS::get_singleton()->mesh_surface_update_skin_region(mesh, p_surface, p_offset, p_data);
 	emit_changed();
 }
 
@@ -1635,7 +1647,9 @@ void ArrayMesh::_bind_methods() {
 
 	ClassDB::bind_method(D_METHOD("add_surface_from_arrays", "primitive", "arrays", "blend_shapes", "lods", "compress_flags"), &ArrayMesh::add_surface_from_arrays, DEFVAL(Array()), DEFVAL(Dictionary()), DEFVAL(0));
 	ClassDB::bind_method(D_METHOD("clear_surfaces"), &ArrayMesh::clear_surfaces);
-	ClassDB::bind_method(D_METHOD("surface_update_region", "surf_idx", "offset", "data"), &ArrayMesh::surface_update_region);
+	ClassDB::bind_method(D_METHOD("surface_update_vertex_region", "surf_idx", "offset", "data"), &ArrayMesh::surface_update_vertex_region);
+	ClassDB::bind_method(D_METHOD("surface_update_attribute_region", "surf_idx", "offset", "data"), &ArrayMesh::surface_update_attribute_region);
+	ClassDB::bind_method(D_METHOD("surface_update_skin_region", "surf_idx", "offset", "data"), &ArrayMesh::surface_update_skin_region);
 	ClassDB::bind_method(D_METHOD("surface_get_array_len", "surf_idx"), &ArrayMesh::surface_get_array_len);
 	ClassDB::bind_method(D_METHOD("surface_get_array_index_len", "surf_idx"), &ArrayMesh::surface_get_array_index_len);
 	ClassDB::bind_method(D_METHOD("surface_get_format", "surf_idx"), &ArrayMesh::surface_get_format);
diff --git a/scene/resources/mesh.h b/scene/resources/mesh.h
index 2dfb46782b..02cab9a5e1 100644
--- a/scene/resources/mesh.h
+++ b/scene/resources/mesh.h
@@ -233,7 +233,9 @@ public:
 	void set_blend_shape_mode(BlendShapeMode p_mode);
 	BlendShapeMode get_blend_shape_mode() const;
 
-	void surface_update_region(int p_surface, int p_offset, const Vector<uint8_t> &p_data);
+	void surface_update_vertex_region(int p_surface, int p_offset, const Vector<uint8_t> &p_data);
+	void surface_update_attribute_region(int p_surface, int p_offset, const Vector<uint8_t> &p_data);
+	void surface_update_skin_region(int p_surface, int p_offset, const Vector<uint8_t> &p_data);
 
 	int get_surface_count() const override;