Extract and reorganize texture resource classes

1 files changed, 907 insertions, 0 deletions

diff --git a/scene/resources/compressed_texture.cpp b/scene/resources/compressed_texture.cpp
new file mode 100644
index 0000000000..f4395d5c7d
--- /dev/null
+++ b/scene/resources/compressed_texture.cpp
@@ -0,0 +1,907 @@
+/**************************************************************************/
+/*  compressed_texture.cpp                                                */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* 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 "compressed_texture.h"
+
+#include "scene/resources/bit_map.h"
+
+Error CompressedTexture2D::_load_data(const String &p_path, int &r_width, int &r_height, Ref<Image> &image, bool &r_request_3d, bool &r_request_normal, bool &r_request_roughness, int &mipmap_limit, int p_size_limit) {
+	alpha_cache.unref();
+
+	ERR_FAIL_COND_V(image.is_null(), ERR_INVALID_PARAMETER);
+
+	Ref<FileAccess> f = FileAccess::open(p_path, FileAccess::READ);
+	ERR_FAIL_COND_V_MSG(f.is_null(), ERR_CANT_OPEN, vformat("Unable to open file: %s.", p_path));
+
+	uint8_t header[4];
+	f->get_buffer(header, 4);
+	if (header[0] != 'G' || header[1] != 'S' || header[2] != 'T' || header[3] != '2') {
+		ERR_FAIL_V_MSG(ERR_FILE_CORRUPT, "Compressed texture file is corrupt (Bad header).");
+	}
+
+	uint32_t version = f->get_32();
+
+	if (version > FORMAT_VERSION) {
+		ERR_FAIL_V_MSG(ERR_FILE_CORRUPT, "Compressed texture file is too new.");
+	}
+	r_width = f->get_32();
+	r_height = f->get_32();
+	uint32_t df = f->get_32(); //data format
+
+	//skip reserved
+	mipmap_limit = int(f->get_32());
+	//reserved
+	f->get_32();
+	f->get_32();
+	f->get_32();
+
+#ifdef TOOLS_ENABLED
+
+	r_request_3d = request_3d_callback && df & FORMAT_BIT_DETECT_3D;
+	r_request_roughness = request_roughness_callback && df & FORMAT_BIT_DETECT_ROUGNESS;
+	r_request_normal = request_normal_callback && df & FORMAT_BIT_DETECT_NORMAL;
+
+#else
+
+	r_request_3d = false;
+	r_request_roughness = false;
+	r_request_normal = false;
+
+#endif
+	if (!(df & FORMAT_BIT_STREAM)) {
+		p_size_limit = 0;
+	}
+
+	image = load_image_from_file(f, p_size_limit);
+
+	if (image.is_null() || image->is_empty()) {
+		return ERR_CANT_OPEN;
+	}
+
+	return OK;
+}
+
+void CompressedTexture2D::set_path(const String &p_path, bool p_take_over) {
+	if (texture.is_valid()) {
+		RenderingServer::get_singleton()->texture_set_path(texture, p_path);
+	}
+
+	Resource::set_path(p_path, p_take_over);
+}
+
+void CompressedTexture2D::_requested_3d(void *p_ud) {
+	CompressedTexture2D *ct = (CompressedTexture2D *)p_ud;
+	Ref<CompressedTexture2D> ctex(ct);
+	ERR_FAIL_NULL(request_3d_callback);
+	request_3d_callback(ctex);
+}
+
+void CompressedTexture2D::_requested_roughness(void *p_ud, const String &p_normal_path, RS::TextureDetectRoughnessChannel p_roughness_channel) {
+	CompressedTexture2D *ct = (CompressedTexture2D *)p_ud;
+	Ref<CompressedTexture2D> ctex(ct);
+	ERR_FAIL_NULL(request_roughness_callback);
+	request_roughness_callback(ctex, p_normal_path, p_roughness_channel);
+}
+
+void CompressedTexture2D::_requested_normal(void *p_ud) {
+	CompressedTexture2D *ct = (CompressedTexture2D *)p_ud;
+	Ref<CompressedTexture2D> ctex(ct);
+	ERR_FAIL_NULL(request_normal_callback);
+	request_normal_callback(ctex);
+}
+
+CompressedTexture2D::TextureFormatRequestCallback CompressedTexture2D::request_3d_callback = nullptr;
+CompressedTexture2D::TextureFormatRoughnessRequestCallback CompressedTexture2D::request_roughness_callback = nullptr;
+CompressedTexture2D::TextureFormatRequestCallback CompressedTexture2D::request_normal_callback = nullptr;
+
+Image::Format CompressedTexture2D::get_format() const {
+	return format;
+}
+
+Error CompressedTexture2D::load(const String &p_path) {
+	int lw, lh;
+	Ref<Image> image;
+	image.instantiate();
+
+	bool request_3d;
+	bool request_normal;
+	bool request_roughness;
+	int mipmap_limit;
+
+	Error err = _load_data(p_path, lw, lh, image, request_3d, request_normal, request_roughness, mipmap_limit);
+	if (err) {
+		return err;
+	}
+
+	if (texture.is_valid()) {
+		RID new_texture = RS::get_singleton()->texture_2d_create(image);
+		RS::get_singleton()->texture_replace(texture, new_texture);
+	} else {
+		texture = RS::get_singleton()->texture_2d_create(image);
+	}
+	if (lw || lh) {
+		RS::get_singleton()->texture_set_size_override(texture, lw, lh);
+	}
+
+	w = lw;
+	h = lh;
+	path_to_file = p_path;
+	format = image->get_format();
+
+	if (get_path().is_empty()) {
+		//temporarily set path if no path set for resource, helps find errors
+		RenderingServer::get_singleton()->texture_set_path(texture, p_path);
+	}
+
+#ifdef TOOLS_ENABLED
+
+	if (request_3d) {
+		//print_line("request detect 3D at " + p_path);
+		RS::get_singleton()->texture_set_detect_3d_callback(texture, _requested_3d, this);
+	} else {
+		//print_line("not requesting detect 3D at " + p_path);
+		RS::get_singleton()->texture_set_detect_3d_callback(texture, nullptr, nullptr);
+	}
+
+	if (request_roughness) {
+		//print_line("request detect srgb at " + p_path);
+		RS::get_singleton()->texture_set_detect_roughness_callback(texture, _requested_roughness, this);
+	} else {
+		//print_line("not requesting detect srgb at " + p_path);
+		RS::get_singleton()->texture_set_detect_roughness_callback(texture, nullptr, nullptr);
+	}
+
+	if (request_normal) {
+		//print_line("request detect srgb at " + p_path);
+		RS::get_singleton()->texture_set_detect_normal_callback(texture, _requested_normal, this);
+	} else {
+		//print_line("not requesting detect normal at " + p_path);
+		RS::get_singleton()->texture_set_detect_normal_callback(texture, nullptr, nullptr);
+	}
+
+#endif
+	notify_property_list_changed();
+	emit_changed();
+	return OK;
+}
+
+String CompressedTexture2D::get_load_path() const {
+	return path_to_file;
+}
+
+int CompressedTexture2D::get_width() const {
+	return w;
+}
+
+int CompressedTexture2D::get_height() const {
+	return h;
+}
+
+RID CompressedTexture2D::get_rid() const {
+	if (!texture.is_valid()) {
+		texture = RS::get_singleton()->texture_2d_placeholder_create();
+	}
+	return texture;
+}
+
+void CompressedTexture2D::draw(RID p_canvas_item, const Point2 &p_pos, const Color &p_modulate, bool p_transpose) const {
+	if ((w | h) == 0) {
+		return;
+	}
+	RenderingServer::get_singleton()->canvas_item_add_texture_rect(p_canvas_item, Rect2(p_pos, Size2(w, h)), texture, false, p_modulate, p_transpose);
+}
+
+void CompressedTexture2D::draw_rect(RID p_canvas_item, const Rect2 &p_rect, bool p_tile, const Color &p_modulate, bool p_transpose) const {
+	if ((w | h) == 0) {
+		return;
+	}
+	RenderingServer::get_singleton()->canvas_item_add_texture_rect(p_canvas_item, p_rect, texture, p_tile, p_modulate, p_transpose);
+}
+
+void CompressedTexture2D::draw_rect_region(RID p_canvas_item, const Rect2 &p_rect, const Rect2 &p_src_rect, const Color &p_modulate, bool p_transpose, bool p_clip_uv) const {
+	if ((w | h) == 0) {
+		return;
+	}
+	RenderingServer::get_singleton()->canvas_item_add_texture_rect_region(p_canvas_item, p_rect, texture, p_src_rect, p_modulate, p_transpose, p_clip_uv);
+}
+
+bool CompressedTexture2D::has_alpha() const {
+	return false;
+}
+
+Ref<Image> CompressedTexture2D::get_image() const {
+	if (texture.is_valid()) {
+		return RS::get_singleton()->texture_2d_get(texture);
+	} else {
+		return Ref<Image>();
+	}
+}
+
+bool CompressedTexture2D::is_pixel_opaque(int p_x, int p_y) const {
+	if (!alpha_cache.is_valid()) {
+		Ref<Image> img = get_image();
+		if (img.is_valid()) {
+			if (img->is_compressed()) { //must decompress, if compressed
+				Ref<Image> decom = img->duplicate();
+				decom->decompress();
+				img = decom;
+			}
+
+			alpha_cache.instantiate();
+			alpha_cache->create_from_image_alpha(img);
+		}
+	}
+
+	if (alpha_cache.is_valid()) {
+		int aw = int(alpha_cache->get_size().width);
+		int ah = int(alpha_cache->get_size().height);
+		if (aw == 0 || ah == 0) {
+			return true;
+		}
+
+		int x = p_x * aw / w;
+		int y = p_y * ah / h;
+
+		x = CLAMP(x, 0, aw);
+		y = CLAMP(y, 0, ah);
+
+		return alpha_cache->get_bit(x, y);
+	}
+
+	return true;
+}
+
+void CompressedTexture2D::reload_from_file() {
+	String path = get_path();
+	if (!path.is_resource_file()) {
+		return;
+	}
+
+	path = ResourceLoader::path_remap(path); //remap for translation
+	path = ResourceLoader::import_remap(path); //remap for import
+	if (!path.is_resource_file()) {
+		return;
+	}
+
+	load(path);
+}
+
+void CompressedTexture2D::_validate_property(PropertyInfo &p_property) const {
+}
+
+Ref<Image> CompressedTexture2D::load_image_from_file(Ref<FileAccess> f, int p_size_limit) {
+	uint32_t data_format = f->get_32();
+	uint32_t w = f->get_16();
+	uint32_t h = f->get_16();
+	uint32_t mipmaps = f->get_32();
+	Image::Format format = Image::Format(f->get_32());
+
+	if (data_format == DATA_FORMAT_PNG || data_format == DATA_FORMAT_WEBP) {
+		//look for a PNG or WebP file inside
+
+		int sw = w;
+		int sh = h;
+
+		//mipmaps need to be read independently, they will be later combined
+		Vector<Ref<Image>> mipmap_images;
+		uint64_t total_size = 0;
+
+		bool first = true;
+
+		for (uint32_t i = 0; i < mipmaps + 1; i++) {
+			uint32_t size = f->get_32();
+
+			if (p_size_limit > 0 && i < (mipmaps - 1) && (sw > p_size_limit || sh > p_size_limit)) {
+				//can't load this due to size limit
+				sw = MAX(sw >> 1, 1);
+				sh = MAX(sh >> 1, 1);
+				f->seek(f->get_position() + size);
+				continue;
+			}
+
+			Vector<uint8_t> pv;
+			pv.resize(size);
+			{
+				uint8_t *wr = pv.ptrw();
+				f->get_buffer(wr, size);
+			}
+
+			Ref<Image> img;
+			if (data_format == DATA_FORMAT_PNG && Image::png_unpacker) {
+				img = Image::png_unpacker(pv);
+			} else if (data_format == DATA_FORMAT_WEBP && Image::webp_unpacker) {
+				img = Image::webp_unpacker(pv);
+			}
+
+			if (img.is_null() || img->is_empty()) {
+				ERR_FAIL_COND_V(img.is_null() || img->is_empty(), Ref<Image>());
+			}
+
+			if (first) {
+				//format will actually be the format of the first image,
+				//as it may have changed on compression
+				format = img->get_format();
+				first = false;
+			} else if (img->get_format() != format) {
+				img->convert(format); //all needs to be the same format
+			}
+
+			total_size += img->get_data().size();
+
+			mipmap_images.push_back(img);
+
+			sw = MAX(sw >> 1, 1);
+			sh = MAX(sh >> 1, 1);
+		}
+
+		//print_line("mipmap read total: " + itos(mipmap_images.size()));
+
+		Ref<Image> image;
+		image.instantiate();
+
+		if (mipmap_images.size() == 1) {
+			//only one image (which will most likely be the case anyway for this format)
+			image = mipmap_images[0];
+			return image;
+
+		} else {
+			//rarer use case, but needs to be supported
+			Vector<uint8_t> img_data;
+			img_data.resize(total_size);
+
+			{
+				uint8_t *wr = img_data.ptrw();
+
+				int ofs = 0;
+				for (int i = 0; i < mipmap_images.size(); i++) {
+					Vector<uint8_t> id = mipmap_images[i]->get_data();
+					int len = id.size();
+					const uint8_t *r = id.ptr();
+					memcpy(&wr[ofs], r, len);
+					ofs += len;
+				}
+			}
+
+			image->set_data(w, h, true, mipmap_images[0]->get_format(), img_data);
+			return image;
+		}
+
+	} else if (data_format == DATA_FORMAT_BASIS_UNIVERSAL) {
+		int sw = w;
+		int sh = h;
+		uint32_t size = f->get_32();
+		if (p_size_limit > 0 && (sw > p_size_limit || sh > p_size_limit)) {
+			//can't load this due to size limit
+			sw = MAX(sw >> 1, 1);
+			sh = MAX(sh >> 1, 1);
+			f->seek(f->get_position() + size);
+			return Ref<Image>();
+		}
+		Vector<uint8_t> pv;
+		pv.resize(size);
+		{
+			uint8_t *wr = pv.ptrw();
+			f->get_buffer(wr, size);
+		}
+		Ref<Image> img;
+		img = Image::basis_universal_unpacker(pv);
+		if (img.is_null() || img->is_empty()) {
+			ERR_FAIL_COND_V(img.is_null() || img->is_empty(), Ref<Image>());
+		}
+		format = img->get_format();
+		sw = MAX(sw >> 1, 1);
+		sh = MAX(sh >> 1, 1);
+		return img;
+	} else if (data_format == DATA_FORMAT_IMAGE) {
+		int size = Image::get_image_data_size(w, h, format, mipmaps ? true : false);
+
+		for (uint32_t i = 0; i < mipmaps + 1; i++) {
+			int tw, th;
+			int ofs = Image::get_image_mipmap_offset_and_dimensions(w, h, format, i, tw, th);
+
+			if (p_size_limit > 0 && i < mipmaps && (p_size_limit > tw || p_size_limit > th)) {
+				if (ofs) {
+					f->seek(f->get_position() + ofs);
+				}
+				continue; //oops, size limit enforced, go to next
+			}
+
+			Vector<uint8_t> data;
+			data.resize(size - ofs);
+
+			{
+				uint8_t *wr = data.ptrw();
+				f->get_buffer(wr, data.size());
+			}
+
+			Ref<Image> image = Image::create_from_data(tw, th, mipmaps - i ? true : false, format, data);
+
+			return image;
+		}
+	}
+
+	return Ref<Image>();
+}
+
+void CompressedTexture2D::_bind_methods() {
+	ClassDB::bind_method(D_METHOD("load", "path"), &CompressedTexture2D::load);
+	ClassDB::bind_method(D_METHOD("get_load_path"), &CompressedTexture2D::get_load_path);
+
+	ADD_PROPERTY(PropertyInfo(Variant::STRING, "load_path", PROPERTY_HINT_FILE, "*.ctex"), "load", "get_load_path");
+}
+
+CompressedTexture2D::CompressedTexture2D() {}
+
+CompressedTexture2D::~CompressedTexture2D() {
+	if (texture.is_valid()) {
+		ERR_FAIL_NULL(RenderingServer::get_singleton());
+		RS::get_singleton()->free(texture);
+	}
+}
+
+Ref<Resource> ResourceFormatLoaderCompressedTexture2D::load(const String &p_path, const String &p_original_path, Error *r_error, bool p_use_sub_threads, float *r_progress, CacheMode p_cache_mode) {
+	Ref<CompressedTexture2D> st;
+	st.instantiate();
+	Error err = st->load(p_path);
+	if (r_error) {
+		*r_error = err;
+	}
+	if (err != OK) {
+		return Ref<Resource>();
+	}
+
+	return st;
+}
+
+void ResourceFormatLoaderCompressedTexture2D::get_recognized_extensions(List<String> *p_extensions) const {
+	p_extensions->push_back("ctex");
+}
+
+bool ResourceFormatLoaderCompressedTexture2D::handles_type(const String &p_type) const {
+	return p_type == "CompressedTexture2D";
+}
+
+String ResourceFormatLoaderCompressedTexture2D::get_resource_type(const String &p_path) const {
+	if (p_path.get_extension().to_lower() == "ctex") {
+		return "CompressedTexture2D";
+	}
+	return "";
+}
+
+void CompressedTexture3D::set_path(const String &p_path, bool p_take_over) {
+	if (texture.is_valid()) {
+		RenderingServer::get_singleton()->texture_set_path(texture, p_path);
+	}
+
+	Resource::set_path(p_path, p_take_over);
+}
+
+Image::Format CompressedTexture3D::get_format() const {
+	return format;
+}
+
+Error CompressedTexture3D::_load_data(const String &p_path, Vector<Ref<Image>> &r_data, Image::Format &r_format, int &r_width, int &r_height, int &r_depth, bool &r_mipmaps) {
+	Ref<FileAccess> f = FileAccess::open(p_path, FileAccess::READ);
+	ERR_FAIL_COND_V_MSG(f.is_null(), ERR_CANT_OPEN, vformat("Unable to open file: %s.", p_path));
+
+	uint8_t header[4];
+	f->get_buffer(header, 4);
+	ERR_FAIL_COND_V(header[0] != 'G' || header[1] != 'S' || header[2] != 'T' || header[3] != 'L', ERR_FILE_UNRECOGNIZED);
+
+	//stored as compressed textures (used for lossless and lossy compression)
+	uint32_t version = f->get_32();
+
+	if (version > FORMAT_VERSION) {
+		ERR_FAIL_V_MSG(ERR_FILE_CORRUPT, "Compressed texture file is too new.");
+	}
+
+	r_depth = f->get_32(); //depth
+	f->get_32(); //ignored (mode)
+	f->get_32(); // ignored (data format)
+
+	f->get_32(); //ignored
+	int mipmap_count = f->get_32();
+	f->get_32(); //ignored
+	f->get_32(); //ignored
+
+	r_mipmaps = mipmap_count != 0;
+
+	r_data.clear();
+
+	for (int i = 0; i < (r_depth + mipmap_count); i++) {
+		Ref<Image> image = CompressedTexture2D::load_image_from_file(f, 0);
+		ERR_FAIL_COND_V(image.is_null() || image->is_empty(), ERR_CANT_OPEN);
+		if (i == 0) {
+			r_format = image->get_format();
+			r_width = image->get_width();
+			r_height = image->get_height();
+		}
+		r_data.push_back(image);
+	}
+
+	return OK;
+}
+
+Error CompressedTexture3D::load(const String &p_path) {
+	Vector<Ref<Image>> data;
+
+	int tw, th, td;
+	Image::Format tfmt;
+	bool tmm;
+
+	Error err = _load_data(p_path, data, tfmt, tw, th, td, tmm);
+	if (err) {
+		return err;
+	}
+
+	if (texture.is_valid()) {
+		RID new_texture = RS::get_singleton()->texture_3d_create(tfmt, tw, th, td, tmm, data);
+		RS::get_singleton()->texture_replace(texture, new_texture);
+	} else {
+		texture = RS::get_singleton()->texture_3d_create(tfmt, tw, th, td, tmm, data);
+	}
+
+	w = tw;
+	h = th;
+	d = td;
+	mipmaps = tmm;
+	format = tfmt;
+
+	path_to_file = p_path;
+
+	if (get_path().is_empty()) {
+		//temporarily set path if no path set for resource, helps find errors
+		RenderingServer::get_singleton()->texture_set_path(texture, p_path);
+	}
+
+	notify_property_list_changed();
+	emit_changed();
+	return OK;
+}
+
+String CompressedTexture3D::get_load_path() const {
+	return path_to_file;
+}
+
+int CompressedTexture3D::get_width() const {
+	return w;
+}
+
+int CompressedTexture3D::get_height() const {
+	return h;
+}
+
+int CompressedTexture3D::get_depth() const {
+	return d;
+}
+
+bool CompressedTexture3D::has_mipmaps() const {
+	return mipmaps;
+}
+
+RID CompressedTexture3D::get_rid() const {
+	if (!texture.is_valid()) {
+		texture = RS::get_singleton()->texture_3d_placeholder_create();
+	}
+	return texture;
+}
+
+Vector<Ref<Image>> CompressedTexture3D::get_data() const {
+	if (texture.is_valid()) {
+		return RS::get_singleton()->texture_3d_get(texture);
+	} else {
+		return Vector<Ref<Image>>();
+	}
+}
+
+void CompressedTexture3D::reload_from_file() {
+	String path = get_path();
+	if (!path.is_resource_file()) {
+		return;
+	}
+
+	path = ResourceLoader::path_remap(path); //remap for translation
+	path = ResourceLoader::import_remap(path); //remap for import
+	if (!path.is_resource_file()) {
+		return;
+	}
+
+	load(path);
+}
+
+void CompressedTexture3D::_validate_property(PropertyInfo &p_property) const {
+}
+
+void CompressedTexture3D::_bind_methods() {
+	ClassDB::bind_method(D_METHOD("load", "path"), &CompressedTexture3D::load);
+	ClassDB::bind_method(D_METHOD("get_load_path"), &CompressedTexture3D::get_load_path);
+
+	ADD_PROPERTY(PropertyInfo(Variant::STRING, "load_path", PROPERTY_HINT_FILE, "*.ctex"), "load", "get_load_path");
+}
+
+CompressedTexture3D::CompressedTexture3D() {}
+
+CompressedTexture3D::~CompressedTexture3D() {
+	if (texture.is_valid()) {
+		ERR_FAIL_NULL(RenderingServer::get_singleton());
+		RS::get_singleton()->free(texture);
+	}
+}
+
+Ref<Resource> ResourceFormatLoaderCompressedTexture3D::load(const String &p_path, const String &p_original_path, Error *r_error, bool p_use_sub_threads, float *r_progress, CacheMode p_cache_mode) {
+	Ref<CompressedTexture3D> st;
+	st.instantiate();
+	Error err = st->load(p_path);
+	if (r_error) {
+		*r_error = err;
+	}
+	if (err != OK) {
+		return Ref<Resource>();
+	}
+
+	return st;
+}
+
+void ResourceFormatLoaderCompressedTexture3D::get_recognized_extensions(List<String> *p_extensions) const {
+	p_extensions->push_back("ctex3d");
+}
+
+bool ResourceFormatLoaderCompressedTexture3D::handles_type(const String &p_type) const {
+	return p_type == "CompressedTexture3D";
+}
+
+String ResourceFormatLoaderCompressedTexture3D::get_resource_type(const String &p_path) const {
+	if (p_path.get_extension().to_lower() == "ctex3d") {
+		return "CompressedTexture3D";
+	}
+	return "";
+}
+
+void CompressedTextureLayered::set_path(const String &p_path, bool p_take_over) {
+	if (texture.is_valid()) {
+		RenderingServer::get_singleton()->texture_set_path(texture, p_path);
+	}
+
+	Resource::set_path(p_path, p_take_over);
+}
+
+Image::Format CompressedTextureLayered::get_format() const {
+	return format;
+}
+
+Error CompressedTextureLayered::_load_data(const String &p_path, Vector<Ref<Image>> &images, int &mipmap_limit, int p_size_limit) {
+	ERR_FAIL_COND_V(images.size() != 0, ERR_INVALID_PARAMETER);
+
+	Ref<FileAccess> f = FileAccess::open(p_path, FileAccess::READ);
+	ERR_FAIL_COND_V_MSG(f.is_null(), ERR_CANT_OPEN, vformat("Unable to open file: %s.", p_path));
+
+	uint8_t header[4];
+	f->get_buffer(header, 4);
+	if (header[0] != 'G' || header[1] != 'S' || header[2] != 'T' || header[3] != 'L') {
+		ERR_FAIL_V_MSG(ERR_FILE_CORRUPT, "Compressed texture layered file is corrupt (Bad header).");
+	}
+
+	uint32_t version = f->get_32();
+
+	if (version > FORMAT_VERSION) {
+		ERR_FAIL_V_MSG(ERR_FILE_CORRUPT, "Compressed texture file is too new.");
+	}
+
+	uint32_t layer_count = f->get_32(); //layer count
+	uint32_t type = f->get_32(); //layer count
+	ERR_FAIL_COND_V((int)type != layered_type, ERR_INVALID_DATA);
+
+	uint32_t df = f->get_32(); //data format
+	mipmap_limit = int(f->get_32());
+	//reserved
+	f->get_32();
+	f->get_32();
+	f->get_32();
+
+	if (!(df & FORMAT_BIT_STREAM)) {
+		p_size_limit = 0;
+	}
+
+	images.resize(layer_count);
+
+	for (uint32_t i = 0; i < layer_count; i++) {
+		Ref<Image> image = CompressedTexture2D::load_image_from_file(f, p_size_limit);
+		ERR_FAIL_COND_V(image.is_null() || image->is_empty(), ERR_CANT_OPEN);
+		images.write[i] = image;
+	}
+
+	return OK;
+}
+
+Error CompressedTextureLayered::load(const String &p_path) {
+	Vector<Ref<Image>> images;
+
+	int mipmap_limit;
+
+	Error err = _load_data(p_path, images, mipmap_limit);
+	if (err) {
+		return err;
+	}
+
+	if (texture.is_valid()) {
+		RID new_texture = RS::get_singleton()->texture_2d_layered_create(images, RS::TextureLayeredType(layered_type));
+		RS::get_singleton()->texture_replace(texture, new_texture);
+	} else {
+		texture = RS::get_singleton()->texture_2d_layered_create(images, RS::TextureLayeredType(layered_type));
+	}
+
+	w = images[0]->get_width();
+	h = images[0]->get_height();
+	mipmaps = images[0]->has_mipmaps();
+	format = images[0]->get_format();
+	layers = images.size();
+
+	path_to_file = p_path;
+
+	if (get_path().is_empty()) {
+		//temporarily set path if no path set for resource, helps find errors
+		RenderingServer::get_singleton()->texture_set_path(texture, p_path);
+	}
+
+	notify_property_list_changed();
+	emit_changed();
+	return OK;
+}
+
+String CompressedTextureLayered::get_load_path() const {
+	return path_to_file;
+}
+
+int CompressedTextureLayered::get_width() const {
+	return w;
+}
+
+int CompressedTextureLayered::get_height() const {
+	return h;
+}
+
+int CompressedTextureLayered::get_layers() const {
+	return layers;
+}
+
+bool CompressedTextureLayered::has_mipmaps() const {
+	return mipmaps;
+}
+
+TextureLayered::LayeredType CompressedTextureLayered::get_layered_type() const {
+	return layered_type;
+}
+
+RID CompressedTextureLayered::get_rid() const {
+	if (!texture.is_valid()) {
+		texture = RS::get_singleton()->texture_2d_layered_placeholder_create(RS::TextureLayeredType(layered_type));
+	}
+	return texture;
+}
+
+Ref<Image> CompressedTextureLayered::get_layer_data(int p_layer) const {
+	if (texture.is_valid()) {
+		return RS::get_singleton()->texture_2d_layer_get(texture, p_layer);
+	} else {
+		return Ref<Image>();
+	}
+}
+
+void CompressedTextureLayered::reload_from_file() {
+	String path = get_path();
+	if (!path.is_resource_file()) {
+		return;
+	}
+
+	path = ResourceLoader::path_remap(path); //remap for translation
+	path = ResourceLoader::import_remap(path); //remap for import
+	if (!path.is_resource_file()) {
+		return;
+	}
+
+	load(path);
+}
+
+void CompressedTextureLayered::_validate_property(PropertyInfo &p_property) const {
+}
+
+void CompressedTextureLayered::_bind_methods() {
+	ClassDB::bind_method(D_METHOD("load", "path"), &CompressedTextureLayered::load);
+	ClassDB::bind_method(D_METHOD("get_load_path"), &CompressedTextureLayered::get_load_path);
+
+	ADD_PROPERTY(PropertyInfo(Variant::STRING, "load_path", PROPERTY_HINT_FILE, "*.ctex"), "load", "get_load_path");
+}
+
+CompressedTextureLayered::CompressedTextureLayered(LayeredType p_type) {
+	layered_type = p_type;
+}
+
+CompressedTextureLayered::~CompressedTextureLayered() {
+	if (texture.is_valid()) {
+		ERR_FAIL_NULL(RenderingServer::get_singleton());
+		RS::get_singleton()->free(texture);
+	}
+}
+
+/////////////////////////////////////////////////
+
+Ref<Resource> ResourceFormatLoaderCompressedTextureLayered::load(const String &p_path, const String &p_original_path, Error *r_error, bool p_use_sub_threads, float *r_progress, CacheMode p_cache_mode) {
+	Ref<CompressedTextureLayered> ct;
+	if (p_path.get_extension().to_lower() == "ctexarray") {
+		Ref<CompressedTexture2DArray> c;
+		c.instantiate();
+		ct = c;
+	} else if (p_path.get_extension().to_lower() == "ccube") {
+		Ref<CompressedCubemap> c;
+		c.instantiate();
+		ct = c;
+	} else if (p_path.get_extension().to_lower() == "ccubearray") {
+		Ref<CompressedCubemapArray> c;
+		c.instantiate();
+		ct = c;
+	} else {
+		if (r_error) {
+			*r_error = ERR_FILE_UNRECOGNIZED;
+		}
+		return Ref<Resource>();
+	}
+	Error err = ct->load(p_path);
+	if (r_error) {
+		*r_error = err;
+	}
+	if (err != OK) {
+		return Ref<Resource>();
+	}
+
+	return ct;
+}
+
+void ResourceFormatLoaderCompressedTextureLayered::get_recognized_extensions(List<String> *p_extensions) const {
+	p_extensions->push_back("ctexarray");
+	p_extensions->push_back("ccube");
+	p_extensions->push_back("ccubearray");
+}
+
+bool ResourceFormatLoaderCompressedTextureLayered::handles_type(const String &p_type) const {
+	return p_type == "CompressedTexture2DArray" || p_type == "CompressedCubemap" || p_type == "CompressedCubemapArray";
+}
+
+String ResourceFormatLoaderCompressedTextureLayered::get_resource_type(const String &p_path) const {
+	if (p_path.get_extension().to_lower() == "ctexarray") {
+		return "CompressedTexture2DArray";
+	}
+	if (p_path.get_extension().to_lower() == "ccube") {
+		return "CompressedCubemap";
+	}
+	if (p_path.get_extension().to_lower() == "ccubearray") {
+		return "CompressedCubemapArray";
+	}
+	return "";
+}