6 files changed, 93 insertions, 0 deletions
diff --git a/scene/resources/material.cpp b/scene/resources/material.cpp
index d5c3f7730b..84399f97a9 100644
--- a/scene/resources/material.cpp
+++ b/scene/resources/material.cpp
@@ -113,6 +113,12 @@ bool Material::_can_use_render_priority() const {
 	return ret;
 }
 
+Ref<Resource> Material::create_placeholder() const {
+	Ref<PlaceholderMaterial> placeholder;
+	placeholder.instantiate();
+	return placeholder;
+}
+
 void Material::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_next_pass", "next_pass"), &Material::set_next_pass);
 	ClassDB::bind_method(D_METHOD("get_next_pass"), &Material::get_next_pass);
@@ -123,6 +129,8 @@ void Material::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("inspect_native_shader_code"), &Material::inspect_native_shader_code);
 	ClassDB::set_method_flags(get_class_static(), _scs_create("inspect_native_shader_code"), METHOD_FLAGS_DEFAULT | METHOD_FLAG_EDITOR);
 
+	ClassDB::bind_method(D_METHOD("create_placeholder"), &Material::create_placeholder);
+
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "render_priority", PROPERTY_HINT_RANGE, itos(RENDER_PRIORITY_MIN) + "," + itos(RENDER_PRIORITY_MAX) + ",1"), "set_render_priority", "get_render_priority");
 	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "next_pass", PROPERTY_HINT_RESOURCE_TYPE, "Material"), "set_next_pass", "get_next_pass");
 
diff --git a/scene/resources/material.h b/scene/resources/material.h
index f1777d31f4..06c542dc61 100644
--- a/scene/resources/material.h
+++ b/scene/resources/material.h
@@ -74,6 +74,9 @@ public:
 	virtual RID get_rid() const override;
 	virtual RID get_shader_rid() const;
 	virtual Shader::Mode get_shader_mode() const;
+
+	virtual Ref<Resource> create_placeholder() const;
+
 	Material();
 	virtual ~Material();
 };
diff --git a/scene/resources/mesh.cpp b/scene/resources/mesh.cpp
index 5e18b5df37..ce54a674db 100644
--- a/scene/resources/mesh.cpp
+++ b/scene/resources/mesh.cpp
@@ -614,6 +614,13 @@ Size2i Mesh::get_lightmap_size_hint() const {
 	return lightmap_size_hint;
 }
 
+Ref<Resource> Mesh::create_placeholder() const {
+	Ref<PlaceholderMesh> placeholder;
+	placeholder.instantiate();
+	placeholder->set_aabb(get_aabb());
+	return placeholder;
+}
+
 void Mesh::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_lightmap_size_hint", "size"), &Mesh::set_lightmap_size_hint);
 	ClassDB::bind_method(D_METHOD("get_lightmap_size_hint"), &Mesh::get_lightmap_size_hint);
@@ -626,6 +633,7 @@ void Mesh::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("surface_get_blend_shape_arrays", "surf_idx"), &Mesh::surface_get_blend_shape_arrays);
 	ClassDB::bind_method(D_METHOD("surface_set_material", "surf_idx", "material"), &Mesh::surface_set_material);
 	ClassDB::bind_method(D_METHOD("surface_get_material", "surf_idx"), &Mesh::surface_get_material);
+	ClassDB::bind_method(D_METHOD("create_placeholder"), &Mesh::create_placeholder);
 
 	BIND_ENUM_CONSTANT(PRIMITIVE_POINTS);
 	BIND_ENUM_CONSTANT(PRIMITIVE_LINES);
diff --git a/scene/resources/mesh.h b/scene/resources/mesh.h
index 1baa466312..1b870d996a 100644
--- a/scene/resources/mesh.h
+++ b/scene/resources/mesh.h
@@ -220,6 +220,8 @@ public:
 	virtual int get_builtin_bind_pose_count() const;
 	virtual Transform3D get_builtin_bind_pose(int p_index) const;
 
+	virtual Ref<Resource> create_placeholder() const;
+
 	Mesh();
 };
 
diff --git a/scene/resources/texture.cpp b/scene/resources/texture.cpp
index f106eebff5..85e21d6056 100644
--- a/scene/resources/texture.cpp
+++ b/scene/resources/texture.cpp
@@ -94,6 +94,13 @@ bool Texture2D::get_rect_region(const Rect2 &p_rect, const Rect2 &p_src_rect, Re
 	return true;
 }
 
+Ref<Resource> Texture2D::create_placeholder() const {
+	Ref<PlaceholderTexture2D> placeholder;
+	placeholder.instantiate();
+	placeholder->set_size(get_size());
+	return placeholder;
+}
+
 void Texture2D::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_width"), &Texture2D::get_width);
 	ClassDB::bind_method(D_METHOD("get_height"), &Texture2D::get_height);
@@ -103,6 +110,7 @@ void Texture2D::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("draw_rect", "canvas_item", "rect", "tile", "modulate", "transpose"), &Texture2D::draw_rect, DEFVAL(Color(1, 1, 1)), DEFVAL(false));
 	ClassDB::bind_method(D_METHOD("draw_rect_region", "canvas_item", "rect", "src_rect", "modulate", "transpose", "clip_uv"), &Texture2D::draw_rect_region, DEFVAL(Color(1, 1, 1)), DEFVAL(false), DEFVAL(true));
 	ClassDB::bind_method(D_METHOD("get_image"), &Texture2D::get_image);
+	ClassDB::bind_method(D_METHOD("create_placeholder"), &Texture2D::create_placeholder);
 
 	ADD_GROUP("", "");
 
@@ -1137,6 +1145,7 @@ void Texture3D::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_depth"), &Texture3D::get_depth);
 	ClassDB::bind_method(D_METHOD("has_mipmaps"), &Texture3D::has_mipmaps);
 	ClassDB::bind_method(D_METHOD("get_data"), &Texture3D::_get_datai);
+	ClassDB::bind_method(D_METHOD("create_placeholder"), &Texture3D::create_placeholder);
 
 	GDVIRTUAL_BIND(_get_format);
 	GDVIRTUAL_BIND(_get_width);
@@ -1145,6 +1154,14 @@ void Texture3D::_bind_methods() {
 	GDVIRTUAL_BIND(_has_mipmaps);
 	GDVIRTUAL_BIND(_get_data);
 }
+
+Ref<Resource> Texture3D::create_placeholder() const {
+	Ref<PlaceholderTexture3D> placeholder;
+	placeholder.instantiate();
+	placeholder->set_size(Vector3i(get_width(), get_height(), get_depth()));
+	return placeholder;
+}
+
 //////////////////////////////////////////
 
 Image::Format ImageTexture3D::get_format() const {
@@ -3048,6 +3065,42 @@ ImageTextureLayered::~ImageTextureLayered() {
 	}
 }
 
+void Texture2DArray::_bind_methods() {
+	ClassDB::bind_method(D_METHOD("create_placeholder"), &Texture2DArray::create_placeholder);
+}
+
+Ref<Resource> Texture2DArray::create_placeholder() const {
+	Ref<PlaceholderTexture2DArray> placeholder;
+	placeholder.instantiate();
+	placeholder->set_size(Size2i(get_width(), get_height()));
+	placeholder->set_layers(get_layers());
+	return placeholder;
+}
+
+void Cubemap::_bind_methods() {
+	ClassDB::bind_method(D_METHOD("create_placeholder"), &Cubemap::create_placeholder);
+}
+
+Ref<Resource> Cubemap::create_placeholder() const {
+	Ref<PlaceholderCubemap> placeholder;
+	placeholder.instantiate();
+	placeholder->set_size(Size2i(get_width(), get_height()));
+	placeholder->set_layers(get_layers());
+	return placeholder;
+}
+
+void CubemapArray::_bind_methods() {
+	ClassDB::bind_method(D_METHOD("create_placeholder"), &CubemapArray::create_placeholder);
+}
+
+Ref<Resource> CubemapArray::create_placeholder() const {
+	Ref<PlaceholderCubemapArray> placeholder;
+	placeholder.instantiate();
+	placeholder->set_size(Size2i(get_width(), get_height()));
+	placeholder->set_layers(get_layers());
+	return placeholder;
+}
+
 ///////////////////////////////////////////
 
 void CompressedTextureLayered::set_path(const String &p_path, bool p_take_over) {
diff --git a/scene/resources/texture.h b/scene/resources/texture.h
index bb86910c0c..7f74ae6941 100644
--- a/scene/resources/texture.h
+++ b/scene/resources/texture.h
@@ -82,6 +82,8 @@ public:
 
 	virtual Ref<Image> get_image() const { return Ref<Image>(); }
 
+	virtual Ref<Resource> create_placeholder() const;
+
 	Texture2D();
 };
 
@@ -450,25 +452,41 @@ public:
 
 class Texture2DArray : public ImageTextureLayered {
 	GDCLASS(Texture2DArray, ImageTextureLayered)
+
+protected:
+	static void _bind_methods();
+
 public:
 	Texture2DArray() :
 			ImageTextureLayered(LAYERED_TYPE_2D_ARRAY) {}
+
+	virtual Ref<Resource> create_placeholder() const;
 };
 
 class Cubemap : public ImageTextureLayered {
 	GDCLASS(Cubemap, ImageTextureLayered);
 
+protected:
+	static void _bind_methods();
+
 public:
 	Cubemap() :
 			ImageTextureLayered(LAYERED_TYPE_CUBEMAP) {}
+
+	virtual Ref<Resource> create_placeholder() const;
 };
 
 class CubemapArray : public ImageTextureLayered {
 	GDCLASS(CubemapArray, ImageTextureLayered);
 
+protected:
+	static void _bind_methods();
+
 public:
 	CubemapArray() :
 			ImageTextureLayered(LAYERED_TYPE_CUBEMAP_ARRAY) {}
+
+	virtual Ref<Resource> create_placeholder() const;
 };
 
 class CompressedTextureLayered : public TextureLayered {
@@ -580,6 +598,7 @@ public:
 	virtual int get_depth() const;
 	virtual bool has_mipmaps() const;
 	virtual Vector<Ref<Image>> get_data() const;
+	virtual Ref<Resource> create_placeholder() const;
 };
 
 class ImageTexture3D : public Texture3D {