/*************************************************************************/
/*  texture.cpp                                                          */
/*************************************************************************/
/*                         This file is part of:                         */
/*                          PANDEMONIUM ENGINE                           */
/*             https://github.com/Relintai/pandemonium_engine            */
/*************************************************************************/
/* Copyright (c) 2022-present Péter Magyar.                              */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
/* Copyright (c) 2007-2022 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 "texture.h"

#include "core/core_string_names.h"
#include "core/io/image_loader.h"
#include "core/math/geometry.h"
#include "core/object/method_bind_ext.gen.inc"
#include "core/os/os.h"
#include "scene/resources/bit_map.h"
#include "scene/resources/mesh/mesh.h"

Size2 Texture::get_size() const {
	return Size2(get_width(), get_height());
}

bool Texture::is_pixel_opaque(int p_x, int p_y) const {
	return true;
}
void Texture::draw(RID p_canvas_item, const Point2 &p_pos, const Color &p_modulate, bool p_transpose, const Ref<Texture> &p_normal_map) const {
	RID normal_rid = p_normal_map.is_valid() ? p_normal_map->get_rid() : RID();
	RenderingServer::get_singleton()->canvas_item_add_texture_rect(p_canvas_item, Rect2(p_pos, get_size()), get_rid(), false, p_modulate, p_transpose, normal_rid);
}
void Texture::draw_rect(RID p_canvas_item, const Rect2 &p_rect, bool p_tile, const Color &p_modulate, bool p_transpose, const Ref<Texture> &p_normal_map) const {
	RID normal_rid = p_normal_map.is_valid() ? p_normal_map->get_rid() : RID();
	RenderingServer::get_singleton()->canvas_item_add_texture_rect(p_canvas_item, p_rect, get_rid(), p_tile, p_modulate, p_transpose, normal_rid);
}
void Texture::draw_rect_region(RID p_canvas_item, const Rect2 &p_rect, const Rect2 &p_src_rect, const Color &p_modulate, bool p_transpose, const Ref<Texture> &p_normal_map, bool p_clip_uv) const {
	RID normal_rid = p_normal_map.is_valid() ? p_normal_map->get_rid() : RID();
	RenderingServer::get_singleton()->canvas_item_add_texture_rect_region(p_canvas_item, p_rect, get_rid(), p_src_rect, p_modulate, p_transpose, normal_rid, p_clip_uv);
}

bool Texture::get_rect_region(const Rect2 &p_rect, const Rect2 &p_src_rect, Rect2 &r_rect, Rect2 &r_src_rect) const {
	r_rect = p_rect;
	r_src_rect = p_src_rect;

	return true;
}

void Texture::_bind_methods() {
	ClassDB::bind_method(D_METHOD("get_width"), &Texture::get_width);
	ClassDB::bind_method(D_METHOD("get_height"), &Texture::get_height);
	ClassDB::bind_method(D_METHOD("get_size"), &Texture::get_size);
	ClassDB::bind_method(D_METHOD("has_alpha"), &Texture::has_alpha);
	ClassDB::bind_method(D_METHOD("set_flags", "flags"), &Texture::set_flags);
	ClassDB::bind_method(D_METHOD("get_flags"), &Texture::get_flags);
	ClassDB::bind_method(D_METHOD("draw", "canvas_item", "position", "modulate", "transpose", "normal_map"), &Texture::draw, DEFVAL(Color(1, 1, 1)), DEFVAL(false), DEFVAL(Variant()));
	ClassDB::bind_method(D_METHOD("draw_rect", "canvas_item", "rect", "tile", "modulate", "transpose", "normal_map"), &Texture::draw_rect, DEFVAL(Color(1, 1, 1)), DEFVAL(false), DEFVAL(Variant()));
	ClassDB::bind_method(D_METHOD("draw_rect_region", "canvas_item", "rect", "src_rect", "modulate", "transpose", "normal_map", "clip_uv"), &Texture::draw_rect_region, DEFVAL(Color(1, 1, 1)), DEFVAL(false), DEFVAL(Variant()), DEFVAL(true));
	ClassDB::bind_method(D_METHOD("get_data"), &Texture::get_data);

	ADD_GROUP("Flags", "");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "flags", PROPERTY_HINT_FLAGS, "Mipmaps,Repeat,Filter,Anisotropic Filter,Convert to Linear,Mirrored Repeat,Video Surface"), "set_flags", "get_flags");
	ADD_GROUP("", "");

	BIND_ENUM_CONSTANT(FLAGS_DEFAULT);
	BIND_ENUM_CONSTANT(FLAG_MIPMAPS);
	BIND_ENUM_CONSTANT(FLAG_REPEAT);
	BIND_ENUM_CONSTANT(FLAG_FILTER);
	BIND_ENUM_CONSTANT(FLAG_ANISOTROPIC_FILTER);
	BIND_ENUM_CONSTANT(FLAG_CONVERT_TO_LINEAR);
	BIND_ENUM_CONSTANT(FLAG_MIRRORED_REPEAT);
	BIND_ENUM_CONSTANT(FLAG_VIDEO_SURFACE);
}

Texture::Texture() {
}

/////////////////////

void ImageTexture::reload_from_file() {
	String path = ResourceLoader::path_remap(get_path());
	if (!path.is_resource_file()) {
		return;
	}

	uint32_t flags = get_flags();
	Ref<Image> img;
	img.instance();

	if (ImageLoader::load_image(path, img) == OK) {
		create_from_image(img, flags);
	} else {
		Resource::reload_from_file();
		_change_notify();
		emit_changed();
	}
}

bool ImageTexture::_set(const StringName &p_name, const Variant &p_value) {
	if (p_name == "image") {
		create_from_image(p_value, flags);
	} else if (p_name == "flags") {
		if (w * h == 0) {
			flags = p_value;
		} else {
			set_flags(p_value);
		}
	} else if (p_name == "size") {
		Size2 s = p_value;
		w = s.width;
		h = s.height;
		RenderingServer::get_singleton()->texture_set_size_override(texture, w, h, 0);
	} else if (p_name == "_data") {
		_set_data(p_value);
	} else {
		return false;
	}

	return true;
}

bool ImageTexture::_get(const StringName &p_name, Variant &r_ret) const {
	if (p_name == "image_data") {
	} else if (p_name == "image") {
		r_ret = get_data();
	} else if (p_name == "flags") {
		r_ret = flags;
	} else if (p_name == "size") {
		r_ret = Size2(w, h);
	} else {
		return false;
	}

	return true;
}

void ImageTexture::_get_property_list(List<PropertyInfo> *p_list) const {
	p_list->push_back(PropertyInfo(Variant::INT, "flags", PROPERTY_HINT_FLAGS, "Mipmaps,Repeat,Filter,Anisotropic,sRGB,Mirrored Repeat"));
	p_list->push_back(PropertyInfo(Variant::OBJECT, "image", PROPERTY_HINT_RESOURCE_TYPE, "Image", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_RESOURCE_NOT_PERSISTENT));
	p_list->push_back(PropertyInfo(Variant::VECTOR2, "size", PROPERTY_HINT_NONE, ""));
}

void ImageTexture::_reload_hook(const RID &p_hook) {
	String path = get_path();
	if (!path.is_resource_file()) {
		return;
	}

	Ref<Image> img;
	img.instance();
	Error err = ImageLoader::load_image(path, img);

	ERR_FAIL_COND_MSG(err != OK, "Cannot load image from path '" + path + "'.");

	RenderingServer::get_singleton()->texture_set_data(texture, img);

	_change_notify();
	emit_changed();
}

void ImageTexture::create(int p_width, int p_height, Image::Format p_format, uint32_t p_flags) {
	flags = p_flags;
	RenderingServer::get_singleton()->texture_allocate(texture, p_width, p_height, 0, p_format, RS::TEXTURE_TYPE_2D, p_flags);
	format = p_format;
	w = p_width;
	h = p_height;
	_change_notify();
	emit_changed();
}

void ImageTexture::create_from_image(const Ref<Image> &p_image, uint32_t p_flags) {
	ERR_FAIL_COND_MSG(p_image.is_null() || p_image->empty(), "Invalid image");
	flags = p_flags;
	w = p_image->get_width();
	h = p_image->get_height();
	format = p_image->get_format();

	RenderingServer::get_singleton()->texture_allocate(texture, p_image->get_width(), p_image->get_height(), 0, p_image->get_format(), RS::TEXTURE_TYPE_2D, p_flags);
	RenderingServer::get_singleton()->texture_set_data(texture, p_image);
	_change_notify();
	emit_changed();

	image_stored = true;
}

void ImageTexture::set_flags(uint32_t p_flags) {
	if (flags == p_flags) {
		return;
	}

	flags = p_flags;
	if (w == 0 || h == 0) {
		return; //uninitialized, do not set to texture
	}
	RenderingServer::get_singleton()->texture_set_flags(texture, p_flags);
	_change_notify("flags");
	emit_changed();
}

uint32_t ImageTexture::get_flags() const {
	return ImageTexture::flags;
}

Image::Format ImageTexture::get_format() const {
	return format;
}
#ifndef DISABLE_DEPRECATED
Error ImageTexture::load(const String &p_path) {
	WARN_DEPRECATED;
	Ref<Image> img;
	img.instance();
	Error err = img->load(p_path);
	if (err == OK) {
		create_from_image(img);
	}
	return err;
}
#endif
void ImageTexture::set_data(const Ref<Image> &p_image) {
	ERR_FAIL_COND_MSG(p_image.is_null(), "Invalid image");

	RenderingServer::get_singleton()->texture_set_data(texture, p_image);

	_change_notify();
	emit_changed();

	alpha_cache.unref();
	image_stored = true;
}

void ImageTexture::_resource_path_changed() {
	String path = get_path();
}

Ref<Image> ImageTexture::get_data() const {
	if (image_stored) {
		return RenderingServer::get_singleton()->texture_get_data(texture);
	} else {
		return Ref<Image>();
	}
}

int ImageTexture::get_width() const {
	return w;
}

int ImageTexture::get_height() const {
	return h;
}

RID ImageTexture::get_rid() const {
	return texture;
}

bool ImageTexture::has_alpha() const {
	return (format == Image::FORMAT_LA8 || format == Image::FORMAT_RGBA8);
}

void ImageTexture::draw(RID p_canvas_item, const Point2 &p_pos, const Color &p_modulate, bool p_transpose, const Ref<Texture> &p_normal_map) const {
	if ((w | h) == 0) {
		return;
	}
	RID normal_rid = p_normal_map.is_valid() ? p_normal_map->get_rid() : RID();
	RenderingServer::get_singleton()->canvas_item_add_texture_rect(p_canvas_item, Rect2(p_pos, Size2(w, h)), texture, false, p_modulate, p_transpose, normal_rid);
}

void ImageTexture::draw_rect(RID p_canvas_item, const Rect2 &p_rect, bool p_tile, const Color &p_modulate, bool p_transpose, const Ref<Texture> &p_normal_map) const {
	if ((w | h) == 0) {
		return;
	}
	RID normal_rid = p_normal_map.is_valid() ? p_normal_map->get_rid() : RID();
	RenderingServer::get_singleton()->canvas_item_add_texture_rect(p_canvas_item, p_rect, texture, p_tile, p_modulate, p_transpose, normal_rid);
}

void ImageTexture::draw_rect_region(RID p_canvas_item, const Rect2 &p_rect, const Rect2 &p_src_rect, const Color &p_modulate, bool p_transpose, const Ref<Texture> &p_normal_map, bool p_clip_uv) const {
	if ((w | h) == 0) {
		return;
	}
	RID normal_rid = p_normal_map.is_valid() ? p_normal_map->get_rid() : RID();
	RenderingServer::get_singleton()->canvas_item_add_texture_rect_region(p_canvas_item, p_rect, texture, p_src_rect, p_modulate, p_transpose, normal_rid, p_clip_uv);
}

bool ImageTexture::is_pixel_opaque(int p_x, int p_y) const {
	if (!alpha_cache.is_valid()) {
		Ref<Image> img = get_data();
		if (img.is_valid()) {
			if (img->is_compressed()) { //must decompress, if compressed
				Ref<Image> decom = img->duplicate();
				decom->decompress();
				img = decom;
			}
			alpha_cache.instance();
			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(Point2(x, y));
	}

	return true;
}

void ImageTexture::set_size_override(const Size2 &p_size) {
	Size2 s = p_size;
	if (s.x != 0) {
		w = s.x;
	}
	if (s.y != 0) {
		h = s.y;
	}
	RenderingServer::get_singleton()->texture_set_size_override(texture, w, h, 0);
}

void ImageTexture::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 ImageTexture::set_storage(Storage p_storage) {
	storage = p_storage;
}

ImageTexture::Storage ImageTexture::get_storage() const {
	return storage;
}

void ImageTexture::set_lossy_storage_quality(float p_lossy_storage_quality) {
	lossy_storage_quality = p_lossy_storage_quality;
}

float ImageTexture::get_lossy_storage_quality() const {
	return lossy_storage_quality;
}

void ImageTexture::_set_data(Dictionary p_data) {
	Ref<Image> img = p_data["image"];
	ERR_FAIL_COND(!img.is_valid());
	uint32_t flags = p_data["flags"];

	create_from_image(img, flags);

	set_storage(Storage(p_data["storage"].operator int()));
	set_lossy_storage_quality(p_data["lossy_quality"]);

	set_size_override(p_data["size"]);
};

void ImageTexture::_bind_methods() {
	ClassDB::bind_method(D_METHOD("create", "width", "height", "format", "flags"), &ImageTexture::create, DEFVAL(FLAGS_DEFAULT));
	ClassDB::bind_method(D_METHOD("create_from_image", "image", "flags"), &ImageTexture::create_from_image, DEFVAL(FLAGS_DEFAULT));
	ClassDB::bind_method(D_METHOD("get_format"), &ImageTexture::get_format);
#ifndef DISABLE_DEPRECATED
	ClassDB::bind_method(D_METHOD("load", "path"), &ImageTexture::load);
#endif
	ClassDB::bind_method(D_METHOD("set_data", "image"), &ImageTexture::set_data);
	ClassDB::bind_method(D_METHOD("set_storage", "mode"), &ImageTexture::set_storage);
	ClassDB::bind_method(D_METHOD("get_storage"), &ImageTexture::get_storage);
	ClassDB::bind_method(D_METHOD("set_lossy_storage_quality", "quality"), &ImageTexture::set_lossy_storage_quality);
	ClassDB::bind_method(D_METHOD("get_lossy_storage_quality"), &ImageTexture::get_lossy_storage_quality);

	ClassDB::bind_method(D_METHOD("set_size_override", "size"), &ImageTexture::set_size_override);
	ClassDB::bind_method(D_METHOD("_reload_hook", "rid"), &ImageTexture::_reload_hook);

	ADD_PROPERTY(PropertyInfo(Variant::INT, "storage", PROPERTY_HINT_ENUM, "Uncompressed,Compress Lossy,Compress Lossless"), "set_storage", "get_storage");
	ADD_PROPERTY(PropertyInfo(Variant::REAL, "lossy_quality", PROPERTY_HINT_RANGE, "0.0,1.0,0.01"), "set_lossy_storage_quality", "get_lossy_storage_quality");

	BIND_ENUM_CONSTANT(STORAGE_RAW);
	BIND_ENUM_CONSTANT(STORAGE_COMPRESS_LOSSY);
	BIND_ENUM_CONSTANT(STORAGE_COMPRESS_LOSSLESS);
}

ImageTexture::ImageTexture() {
	w = h = 0;
	flags = FLAGS_DEFAULT;
	texture = RID_PRIME(RenderingServer::get_singleton()->texture_create());
	storage = STORAGE_RAW;
	lossy_storage_quality = 0.7;
	image_stored = false;
	format = Image::FORMAT_L8;
}

ImageTexture::~ImageTexture() {
	RenderingServer::get_singleton()->free(texture);
}

//////////////////////////////////////////

void StreamTexture::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 StreamTexture::_requested_3d(void *p_ud) {
	StreamTexture *st = (StreamTexture *)p_ud;
	Ref<StreamTexture> stex(st);
	ERR_FAIL_COND(!request_3d_callback);
	request_3d_callback(stex);
}

void StreamTexture::_requested_srgb(void *p_ud) {
	StreamTexture *st = (StreamTexture *)p_ud;
	Ref<StreamTexture> stex(st);
	ERR_FAIL_COND(!request_srgb_callback);
	request_srgb_callback(stex);
}

void StreamTexture::_requested_normal(void *p_ud) {
	StreamTexture *st = (StreamTexture *)p_ud;
	Ref<StreamTexture> stex(st);
	ERR_FAIL_COND(!request_normal_callback);
	request_normal_callback(stex);
}

StreamTexture::TextureFormatRequestCallback StreamTexture::request_3d_callback = nullptr;
StreamTexture::TextureFormatRequestCallback StreamTexture::request_srgb_callback = nullptr;
StreamTexture::TextureFormatRequestCallback StreamTexture::request_normal_callback = nullptr;

uint32_t StreamTexture::get_flags() const {
	return flags;
}
Image::Format StreamTexture::get_format() const {
	return format;
}

Error StreamTexture::_load_data(const String &p_path, int &tw, int &th, int &tw_custom, int &th_custom, int &flags, Ref<Image> &image, int p_size_limit) {
	alpha_cache.unref();

	ERR_FAIL_COND_V(image.is_null(), ERR_INVALID_PARAMETER);

	FileAccess *f = FileAccess::open(p_path, FileAccess::READ);
	ERR_FAIL_COND_V_MSG(!f, 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] != 'D' || header[2] != 'S' || header[3] != 'T') {
		memdelete(f);
		ERR_FAIL_COND_V(header[0] != 'G' || header[1] != 'D' || header[2] != 'S' || header[3] != 'T', ERR_FILE_CORRUPT);
	}

	tw = f->get_16();
	tw_custom = f->get_16();
	th = f->get_16();
	th_custom = f->get_16();

	flags = f->get_32(); //texture flags!
	uint32_t df = f->get_32(); //data format

	/*
	print_line("width: " + itos(tw));
	print_line("height: " + itos(th));
	print_line("flags: " + itos(flags));
	print_line("df: " + itos(df));
	*/
#ifdef TOOLS_ENABLED

	if (request_3d_callback && df & FORMAT_BIT_DETECT_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_srgb_callback && df & FORMAT_BIT_DETECT_SRGB) {
		//print_line("request detect srgb at " + p_path);
		RS::get_singleton()->texture_set_detect_srgb_callback(texture, _requested_srgb, this);
	} else {
		//print_line("not requesting detect srgb at " + p_path);
		RS::get_singleton()->texture_set_detect_srgb_callback(texture, nullptr, nullptr);
	}

	if (request_srgb_callback && df & FORMAT_BIT_DETECT_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
	if (!(df & FORMAT_BIT_STREAM)) {
		p_size_limit = 0;
	}

	if (df & FORMAT_BIT_PNG || df & FORMAT_BIT_WEBP) {
		//look for a PNG or WEBP file inside

		int sw = tw;
		int sh = th;

		uint32_t mipmaps = f->get_32();
		uint32_t size = f->get_32();

		//print_line("mipmaps: " + itos(mipmaps));

		while (mipmaps > 1 && p_size_limit > 0 && (sw > p_size_limit || sh > p_size_limit)) {
			f->seek(f->get_position() + size);
			mipmaps = f->get_32();
			size = f->get_32();

			sw = MAX(sw >> 1, 1);
			sh = MAX(sh >> 1, 1);
			mipmaps--;
		}

		//mipmaps need to be read independently, they will be later combined
		Vector<Ref<Image>> mipmap_images;
		uint64_t total_size = 0;

		for (uint32_t i = 0; i < mipmaps; i++) {
			if (i) {
				size = f->get_32();
			}

			PoolVector<uint8_t> pv;
			pv.resize(size);
			{
				PoolVector<uint8_t>::Write w = pv.write();
				f->get_buffer(w.ptr(), size);
			}

			Ref<Image> img;
			bool is_png = df & FORMAT_BIT_PNG;
			if (is_png && Image::png_unpacker) {
				img = Image::png_unpacker(pv);
			} else if (!is_png && Image::webp_unpacker) {
				img = Image::webp_unpacker(pv);
			}

			if (img.is_null() || img->empty()) {
				memdelete(f);
				ERR_FAIL_COND_V(img.is_null() || img->empty(), ERR_FILE_CORRUPT);
			}

			if (i != 0) {
				img->convert(mipmap_images[0]->get_format()); // ensure the same format for all mipmaps
			}

			total_size += img->get_data().size();

			mipmap_images.push_back(img);
		}

		//print_line("mipmap read total: " + itos(mipmap_images.size()));

		memdelete(f); //no longer needed

		if (mipmap_images.size() == 1) {
			image = mipmap_images[0];
			return OK;

		} else {
			PoolVector<uint8_t> img_data;
			img_data.resize(total_size);

			{
				PoolVector<uint8_t>::Write w = img_data.write();

				int ofs = 0;
				for (int i = 0; i < mipmap_images.size(); i++) {
					PoolVector<uint8_t> id = mipmap_images[i]->get_data();
					int len = id.size();
					PoolVector<uint8_t>::Read r = id.read();
					memcpy(&w[ofs], r.ptr(), len);
					ofs += len;
				}
			}

			image->create(sw, sh, true, mipmap_images[0]->get_format(), img_data);
			return OK;
		}

	} else {
		//look for regular format
		Image::Format format = (Image::Format)(df & FORMAT_MASK_IMAGE_FORMAT);
		bool mipmaps = df & FORMAT_BIT_HAS_MIPMAPS;

		if (!mipmaps) {
			int size = Image::get_image_data_size(tw, th, format, false);

			PoolVector<uint8_t> img_data;
			img_data.resize(size);

			{
				PoolVector<uint8_t>::Write w = img_data.write();
				f->get_buffer(w.ptr(), size);
			}

			memdelete(f);

			image->create(tw, th, false, format, img_data);
			return OK;
		} else {
			int sw = tw;
			int sh = th;

			int mipmaps2 = Image::get_image_required_mipmaps(tw, th, format);
			uint64_t total_size = Image::get_image_data_size(tw, th, format, true);
			int idx = 0;

			while (mipmaps2 > 1 && p_size_limit > 0 && (sw > p_size_limit || sh > p_size_limit)) {
				sw = MAX(sw >> 1, 1);
				sh = MAX(sh >> 1, 1);
				mipmaps2--;
				idx++;
			}

			int ofs = Image::get_image_mipmap_offset(tw, th, format, idx);

			if (total_size - ofs <= 0) {
				memdelete(f);
				ERR_FAIL_V(ERR_FILE_CORRUPT);
			}

			f->seek(f->get_position() + ofs);

			PoolVector<uint8_t> img_data;
			img_data.resize(total_size - ofs);

			{
				PoolVector<uint8_t>::Write w = img_data.write();
				uint64_t bytes = f->get_buffer(w.ptr(), total_size - ofs);
				//print_line("requested read: " + itos(total_size - ofs) + " but got: " + itos(bytes));

				memdelete(f);

				uint64_t expected = total_size - ofs;
				if (bytes < expected) {
					//this is a compatibility workaround for older format, which saved less mipmaps2. It is still recommended the image is reimported.
					memset(w.ptr() + bytes, 0, (expected - bytes));
				} else if (bytes != expected) {
					ERR_FAIL_V(ERR_FILE_CORRUPT);
				}
			}

			image->create(sw, sh, true, format, img_data);

			return OK;
		}
	}

	return ERR_BUG; //unreachable
}

Error StreamTexture::load(const String &p_path) {
	int lw, lh, lwc, lhc, lflags;
	Ref<Image> image;
	image.instance();
	Error err = _load_data(p_path, lw, lh, lwc, lhc, lflags, image);
	if (err) {
		return err;
	}

	if (get_path() == String()) {
		//temporarily set path if no path set for resource, helps find errors
		RenderingServer::get_singleton()->texture_set_path(texture, p_path);
	}
	RS::get_singleton()->texture_allocate(texture, image->get_width(), image->get_height(), 0, image->get_format(), RS::TEXTURE_TYPE_2D, lflags);
	RS::get_singleton()->texture_set_data(texture, image);
	if (lwc || lhc) {
		RS::get_singleton()->texture_set_size_override(texture, lwc, lhc, 0);
	} else {
	}

	w = lwc ? lwc : lw;
	h = lhc ? lhc : lh;
	flags = lflags;
	path_to_file = p_path;
	format = image->get_format();

	_change_notify();
	emit_changed();
	return OK;
}
String StreamTexture::get_load_path() const {
	return path_to_file;
}

int StreamTexture::get_width() const {
	return w;
}
int StreamTexture::get_height() const {
	return h;
}
RID StreamTexture::get_rid() const {
	return texture;
}

void StreamTexture::draw(RID p_canvas_item, const Point2 &p_pos, const Color &p_modulate, bool p_transpose, const Ref<Texture> &p_normal_map) const {
	if ((w | h) == 0) {
		return;
	}
	RID normal_rid = p_normal_map.is_valid() ? p_normal_map->get_rid() : RID();
	RenderingServer::get_singleton()->canvas_item_add_texture_rect(p_canvas_item, Rect2(p_pos, Size2(w, h)), texture, false, p_modulate, p_transpose, normal_rid);
}
void StreamTexture::draw_rect(RID p_canvas_item, const Rect2 &p_rect, bool p_tile, const Color &p_modulate, bool p_transpose, const Ref<Texture> &p_normal_map) const {
	if ((w | h) == 0) {
		return;
	}
	RID normal_rid = p_normal_map.is_valid() ? p_normal_map->get_rid() : RID();
	RenderingServer::get_singleton()->canvas_item_add_texture_rect(p_canvas_item, p_rect, texture, p_tile, p_modulate, p_transpose, normal_rid);
}
void StreamTexture::draw_rect_region(RID p_canvas_item, const Rect2 &p_rect, const Rect2 &p_src_rect, const Color &p_modulate, bool p_transpose, const Ref<Texture> &p_normal_map, bool p_clip_uv) const {
	if ((w | h) == 0) {
		return;
	}
	RID normal_rid = p_normal_map.is_valid() ? p_normal_map->get_rid() : RID();
	RenderingServer::get_singleton()->canvas_item_add_texture_rect_region(p_canvas_item, p_rect, texture, p_src_rect, p_modulate, p_transpose, normal_rid, p_clip_uv);
}

bool StreamTexture::has_alpha() const {
	return false;
}

Ref<Image> StreamTexture::get_data() const {
	return RS::get_singleton()->texture_get_data(texture);
}

bool StreamTexture::is_pixel_opaque(int p_x, int p_y) const {
	if (!alpha_cache.is_valid()) {
		Ref<Image> img = get_data();
		if (img.is_valid()) {
			if (img->is_compressed()) { //must decompress, if compressed
				Ref<Image> decom = img->duplicate();
				decom->decompress();
				img = decom;
			}

			alpha_cache.instance();
			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(Point2(x, y));
	}

	return true;
}
void StreamTexture::set_flags(uint32_t p_flags) {
	flags = p_flags;
	RS::get_singleton()->texture_set_flags(texture, flags);
	_change_notify("flags");
	emit_changed();
}

void StreamTexture::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 StreamTexture::_validate_property(PropertyInfo &property) const {
	if (property.name == "flags") {
		property.usage = PROPERTY_USAGE_NOEDITOR;
	}
}

void StreamTexture::_bind_methods() {
	ClassDB::bind_method(D_METHOD("load", "path"), &StreamTexture::load);
	ClassDB::bind_method(D_METHOD("get_load_path"), &StreamTexture::get_load_path);

	ADD_PROPERTY(PropertyInfo(Variant::STRING, "load_path", PROPERTY_HINT_FILE, "*.stex"), "load", "get_load_path");
}

StreamTexture::StreamTexture() {
	format = Image::FORMAT_MAX;
	flags = 0;
	w = 0;
	h = 0;

	texture = RID_PRIME(RS::get_singleton()->texture_create());
}

StreamTexture::~StreamTexture() {
	RS::get_singleton()->free(texture);
}

RES ResourceFormatLoaderStreamTexture::load(const String &p_path, const String &p_original_path, Error *r_error, bool p_no_subresource_cache) {
	Ref<StreamTexture> st;
	st.instance();
	Error err = st->load(p_path);
	if (r_error) {
		*r_error = err;
	}
	if (err != OK) {
		return RES();
	}

	return st;
}

void ResourceFormatLoaderStreamTexture::get_recognized_extensions(List<String> *p_extensions) const {
	p_extensions->push_back("stex");
}
bool ResourceFormatLoaderStreamTexture::handles_type(const String &p_type) const {
	return p_type == "StreamTexture";
}
String ResourceFormatLoaderStreamTexture::get_resource_type(const String &p_path) const {
	if (p_path.get_extension().to_lower() == "stex") {
		return "StreamTexture";
	}
	return "";
}

//////////////////////////////////////////

int AtlasTexture::get_width() const {
	if (region.size.width == 0) {
		if (atlas.is_valid()) {
			return atlas->get_width();
		}
		return 1;
	} else {
		return region.size.width + margin.size.width;
	}
}
int AtlasTexture::get_height() const {
	if (region.size.height == 0) {
		if (atlas.is_valid()) {
			return atlas->get_height();
		}
		return 1;
	} else {
		return region.size.height + margin.size.height;
	}
}
RID AtlasTexture::get_rid() const {
	if (atlas.is_valid()) {
		return atlas->get_rid();
	}

	return RID();
}

bool AtlasTexture::has_alpha() const {
	if (atlas.is_valid()) {
		return atlas->has_alpha();
	}

	return false;
}

void AtlasTexture::set_flags(uint32_t p_flags) {
	if (atlas.is_valid()) {
		atlas->set_flags(p_flags);
	}
}

uint32_t AtlasTexture::get_flags() const {
	if (atlas.is_valid()) {
		return atlas->get_flags();
	}

	return 0;
}

void AtlasTexture::set_atlas(const Ref<Texture> &p_atlas) {
	ERR_FAIL_COND(p_atlas == this);
	if (atlas == p_atlas) {
		return;
	}
	atlas = p_atlas;
	emit_changed();
	_change_notify("atlas");
}
Ref<Texture> AtlasTexture::get_atlas() const {
	return atlas;
}

void AtlasTexture::set_region(const Rect2 &p_region) {
	if (region == p_region) {
		return;
	}
	region = p_region;
	emit_changed();
	_change_notify("region");
}

Rect2 AtlasTexture::get_region() const {
	return region;
}

void AtlasTexture::set_margin(const Rect2 &p_margin) {
	if (margin == p_margin) {
		return;
	}
	margin = p_margin;
	emit_changed();
	_change_notify("margin");
}

Rect2 AtlasTexture::get_margin() const {
	return margin;
}

void AtlasTexture::set_filter_clip(const bool p_enable) {
	filter_clip = p_enable;
	emit_changed();
	_change_notify("filter_clip");
}

bool AtlasTexture::has_filter_clip() const {
	return filter_clip;
}

Ref<Image> AtlasTexture::get_data() const {
	if (!atlas.is_valid() || !atlas->get_data().is_valid()) {
		return Ref<Image>();
	}

	return atlas->get_data()->get_rect(region);
}

void AtlasTexture::_bind_methods() {
	ClassDB::bind_method(D_METHOD("set_atlas", "atlas"), &AtlasTexture::set_atlas);
	ClassDB::bind_method(D_METHOD("get_atlas"), &AtlasTexture::get_atlas);

	ClassDB::bind_method(D_METHOD("set_region", "region"), &AtlasTexture::set_region);
	ClassDB::bind_method(D_METHOD("get_region"), &AtlasTexture::get_region);

	ClassDB::bind_method(D_METHOD("set_margin", "margin"), &AtlasTexture::set_margin);
	ClassDB::bind_method(D_METHOD("get_margin"), &AtlasTexture::get_margin);

	ClassDB::bind_method(D_METHOD("set_filter_clip", "enable"), &AtlasTexture::set_filter_clip);
	ClassDB::bind_method(D_METHOD("has_filter_clip"), &AtlasTexture::has_filter_clip);

	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "atlas", PROPERTY_HINT_RESOURCE_TYPE, "Texture"), "set_atlas", "get_atlas");
	ADD_PROPERTY(PropertyInfo(Variant::RECT2, "region"), "set_region", "get_region");
	ADD_PROPERTY(PropertyInfo(Variant::RECT2, "margin"), "set_margin", "get_margin");
	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "filter_clip"), "set_filter_clip", "has_filter_clip");
}

void AtlasTexture::draw(RID p_canvas_item, const Point2 &p_pos, const Color &p_modulate, bool p_transpose, const Ref<Texture> &p_normal_map) const {
	if (!atlas.is_valid()) {
		return;
	}

	Rect2 rc = region;

	if (rc.size.width == 0) {
		rc.size.width = atlas->get_width();
	}

	if (rc.size.height == 0) {
		rc.size.height = atlas->get_height();
	}

	atlas->draw_rect_region(p_canvas_item, Rect2(p_pos + margin.position, rc.size), rc, p_modulate, p_transpose, p_normal_map);
}

void AtlasTexture::draw_rect(RID p_canvas_item, const Rect2 &p_rect, bool p_tile, const Color &p_modulate, bool p_transpose, const Ref<Texture> &p_normal_map) const {
	if (!atlas.is_valid()) {
		return;
	}

	Rect2 rc = region;

	if (rc.size.width == 0) {
		rc.size.width = atlas->get_width();
	}

	if (rc.size.height == 0) {
		rc.size.height = atlas->get_height();
	}

	Vector2 scale = p_rect.size / (region.size + margin.size);
	Rect2 dr(p_rect.position + margin.position * scale, rc.size * scale);

	atlas->draw_rect_region(p_canvas_item, dr, rc, p_modulate, p_transpose, p_normal_map);
}
Texture::RefineRectResult AtlasTexture::refine_rect_region(Rect2 &r_dst_rect, Rect2 &r_src_rect) const {
	if (!atlas.is_valid()) {
		return REFINE_RECT_RESULT_NO_DRAW;
	}
	Rect2 temp_rect = r_dst_rect;
	Rect2 temp_src_rect = r_src_rect;

	if (get_rect_region(temp_rect, temp_src_rect, r_dst_rect, r_src_rect)) {
		return atlas->refine_rect_region(r_dst_rect, r_src_rect);
	}

	return REFINE_RECT_RESULT_NO_DRAW;
}
void AtlasTexture::draw_rect_region(RID p_canvas_item, const Rect2 &p_rect, const Rect2 &p_src_rect, const Color &p_modulate, bool p_transpose, const Ref<Texture> &p_normal_map, bool p_clip_uv) const {
	if (!atlas.is_valid()) {
		return;
	}

	Rect2 dst;
	Rect2 src;
	if (get_rect_region(p_rect, p_src_rect, dst, src)) {
		atlas->draw_rect_region(p_canvas_item, dst, src, p_modulate, p_transpose, p_normal_map);
	}
}

bool AtlasTexture::get_rect_region(const Rect2 &p_rect, const Rect2 &p_src_rect, Rect2 &r_rect, Rect2 &r_src_rect) const {
	if (!atlas.is_valid()) {
		return false;
	}

	Rect2 src = p_src_rect;
	if (src.size == Size2()) {
		src.size = region.size;
	}
	Vector2 scale = p_rect.size / src.size;

	src.position += (region.position - margin.position);
	Rect2 src_clipped = region.clip(src);
	if (src_clipped.size == Size2()) {
		return false;
	}

	Vector2 ofs = (src_clipped.position - src.position);
	if (scale.x < 0) {
		ofs.x += (src_clipped.size.x - src.size.x);
	}
	if (scale.y < 0) {
		ofs.y += (src_clipped.size.y - src.size.y);
	}

	r_rect = Rect2(p_rect.position + ofs * scale, src_clipped.size * scale);
	r_src_rect = src_clipped;
	return true;
}

bool AtlasTexture::is_pixel_opaque(int p_x, int p_y) const {
	if (!atlas.is_valid()) {
		return true;
	}

	int x = p_x + region.position.x - margin.position.x;
	int y = p_y + region.position.y - margin.position.y;

	// margin edge may outside of atlas
	if (x < 0 || x >= atlas->get_width()) {
		return false;
	}
	if (y < 0 || y >= atlas->get_height()) {
		return false;
	}

	return atlas->is_pixel_opaque(x, y);
}

AtlasTexture::AtlasTexture() {
	filter_clip = false;
}

/////////////////////////////////////////

int MeshTexture::get_width() const {
	return size.width;
}
int MeshTexture::get_height() const {
	return size.height;
}
RID MeshTexture::get_rid() const {
	return RID();
}

bool MeshTexture::has_alpha() const {
	return false;
}

void MeshTexture::set_flags(uint32_t p_flags) {
}

uint32_t MeshTexture::get_flags() const {
	return 0;
}

void MeshTexture::set_mesh(const Ref<Mesh> &p_mesh) {
	mesh = p_mesh;
}
Ref<Mesh> MeshTexture::get_mesh() const {
	return mesh;
}

void MeshTexture::set_image_size(const Size2 &p_size) {
	size = p_size;
}

Size2 MeshTexture::get_image_size() const {
	return size;
}

void MeshTexture::set_base_texture(const Ref<Texture> &p_texture) {
	base_texture = p_texture;
}

Ref<Texture> MeshTexture::get_base_texture() const {
	return base_texture;
}

void MeshTexture::draw(RID p_canvas_item, const Point2 &p_pos, const Color &p_modulate, bool p_transpose, const Ref<Texture> &p_normal_map) const {
	if (mesh.is_null() || base_texture.is_null()) {
		return;
	}
	Transform2D xform;
	xform.set_origin(p_pos);
	if (p_transpose) {
		SWAP(xform.columns[0][1], xform.columns[1][0]);
		SWAP(xform.columns[0][0], xform.columns[1][1]);
	}
	RID normal_rid = p_normal_map.is_valid() ? p_normal_map->get_rid() : RID();
	RenderingServer::get_singleton()->canvas_item_add_mesh(p_canvas_item, mesh->get_rid(), xform, p_modulate, base_texture->get_rid(), normal_rid);
}
void MeshTexture::draw_rect(RID p_canvas_item, const Rect2 &p_rect, bool p_tile, const Color &p_modulate, bool p_transpose, const Ref<Texture> &p_normal_map) const {
	if (mesh.is_null() || base_texture.is_null()) {
		return;
	}
	Transform2D xform;
	Vector2 origin = p_rect.position;
	if (p_rect.size.x < 0) {
		origin.x += size.x;
	}
	if (p_rect.size.y < 0) {
		origin.y += size.y;
	}
	xform.set_origin(origin);
	xform.set_scale(p_rect.size / size);

	if (p_transpose) {
		SWAP(xform.columns[0][1], xform.columns[1][0]);
		SWAP(xform.columns[0][0], xform.columns[1][1]);
	}
	RID normal_rid = p_normal_map.is_valid() ? p_normal_map->get_rid() : RID();
	RenderingServer::get_singleton()->canvas_item_add_mesh(p_canvas_item, mesh->get_rid(), xform, p_modulate, base_texture->get_rid(), normal_rid);
}
void MeshTexture::draw_rect_region(RID p_canvas_item, const Rect2 &p_rect, const Rect2 &p_src_rect, const Color &p_modulate, bool p_transpose, const Ref<Texture> &p_normal_map, bool p_clip_uv) const {
	if (mesh.is_null() || base_texture.is_null()) {
		return;
	}
	Transform2D xform;
	Vector2 origin = p_rect.position;
	if (p_rect.size.x < 0) {
		origin.x += size.x;
	}
	if (p_rect.size.y < 0) {
		origin.y += size.y;
	}
	xform.set_origin(origin);
	xform.set_scale(p_rect.size / size);

	if (p_transpose) {
		SWAP(xform.columns[0][1], xform.columns[1][0]);
		SWAP(xform.columns[0][0], xform.columns[1][1]);
	}
	RID normal_rid = p_normal_map.is_valid() ? p_normal_map->get_rid() : RID();
	RenderingServer::get_singleton()->canvas_item_add_mesh(p_canvas_item, mesh->get_rid(), xform, p_modulate, base_texture->get_rid(), normal_rid);
}

bool MeshTexture::is_pixel_opaque(int p_x, int p_y) const {
	return true;
}

void MeshTexture::_bind_methods() {
	ClassDB::bind_method(D_METHOD("set_mesh", "mesh"), &MeshTexture::set_mesh);
	ClassDB::bind_method(D_METHOD("get_mesh"), &MeshTexture::get_mesh);
	ClassDB::bind_method(D_METHOD("set_image_size", "size"), &MeshTexture::set_image_size);
	ClassDB::bind_method(D_METHOD("get_image_size"), &MeshTexture::get_image_size);
	ClassDB::bind_method(D_METHOD("set_base_texture", "texture"), &MeshTexture::set_base_texture);
	ClassDB::bind_method(D_METHOD("get_base_texture"), &MeshTexture::get_base_texture);

	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "mesh", PROPERTY_HINT_RESOURCE_TYPE, "Mesh"), "set_mesh", "get_mesh");
	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "base_texture", PROPERTY_HINT_RESOURCE_TYPE, "Texture"), "set_base_texture", "get_base_texture");
	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "image_size", PROPERTY_HINT_RANGE, "0,16384,1"), "set_image_size", "get_image_size");
}

MeshTexture::MeshTexture() {
}

//////////////////////////////////////////

int LargeTexture::get_width() const {
	return size.width;
}
int LargeTexture::get_height() const {
	return size.height;
}
RID LargeTexture::get_rid() const {
	return RID();
}

bool LargeTexture::has_alpha() const {
	for (int i = 0; i < pieces.size(); i++) {
		if (pieces[i].texture->has_alpha()) {
			return true;
		}
	}

	return false;
}

void LargeTexture::set_flags(uint32_t p_flags) {
	for (int i = 0; i < pieces.size(); i++) {
		pieces.write[i].texture->set_flags(p_flags);
	}
}

uint32_t LargeTexture::get_flags() const {
	if (pieces.size()) {
		return pieces[0].texture->get_flags();
	}

	return 0;
}

int LargeTexture::add_piece(const Point2 &p_offset, const Ref<Texture> &p_texture) {
	ERR_FAIL_COND_V(p_texture.is_null(), -1);
	Piece p;
	p.offset = p_offset;
	p.texture = p_texture;
	pieces.push_back(p);

	return pieces.size() - 1;
}

void LargeTexture::set_piece_offset(int p_idx, const Point2 &p_offset) {
	ERR_FAIL_INDEX(p_idx, pieces.size());
	pieces.write[p_idx].offset = p_offset;
};

void LargeTexture::set_piece_texture(int p_idx, const Ref<Texture> &p_texture) {
	ERR_FAIL_COND(p_texture == this);
	ERR_FAIL_COND(p_texture.is_null());
	ERR_FAIL_INDEX(p_idx, pieces.size());
	pieces.write[p_idx].texture = p_texture;
};

void LargeTexture::set_size(const Size2 &p_size) {
	size = p_size;
}
void LargeTexture::clear() {
	pieces.clear();
	size = Size2i();
}

Array LargeTexture::_get_data() const {
	Array arr;
	for (int i = 0; i < pieces.size(); i++) {
		arr.push_back(pieces[i].offset);
		arr.push_back(pieces[i].texture);
	}
	arr.push_back(Size2(size));
	return arr;
}
void LargeTexture::_set_data(const Array &p_array) {
	ERR_FAIL_COND(p_array.size() < 1);
	ERR_FAIL_COND(!(p_array.size() & 1));
	clear();
	for (int i = 0; i < p_array.size() - 1; i += 2) {
		add_piece(p_array[i], p_array[i + 1]);
	}
	size = Size2(p_array[p_array.size() - 1]);
}

int LargeTexture::get_piece_count() const {
	return pieces.size();
}
Vector2 LargeTexture::get_piece_offset(int p_idx) const {
	ERR_FAIL_INDEX_V(p_idx, pieces.size(), Vector2());
	return pieces[p_idx].offset;
}
Ref<Texture> LargeTexture::get_piece_texture(int p_idx) const {
	ERR_FAIL_INDEX_V(p_idx, pieces.size(), Ref<Texture>());
	return pieces[p_idx].texture;
}
Ref<Image> LargeTexture::to_image() const {
	Ref<Image> img = memnew(Image(this->get_width(), this->get_height(), false, Image::FORMAT_RGBA8));
	for (int i = 0; i < pieces.size(); i++) {
		Ref<Image> src_img = pieces[i].texture->get_data();
		img->blit_rect(src_img, Rect2(0, 0, src_img->get_width(), src_img->get_height()), pieces[i].offset);
	}

	return img;
}

void LargeTexture::_bind_methods() {
	ClassDB::bind_method(D_METHOD("add_piece", "ofs", "texture"), &LargeTexture::add_piece);
	ClassDB::bind_method(D_METHOD("set_piece_offset", "idx", "ofs"), &LargeTexture::set_piece_offset);
	ClassDB::bind_method(D_METHOD("set_piece_texture", "idx", "texture"), &LargeTexture::set_piece_texture);
	ClassDB::bind_method(D_METHOD("set_size", "size"), &LargeTexture::set_size);
	ClassDB::bind_method(D_METHOD("clear"), &LargeTexture::clear);

	ClassDB::bind_method(D_METHOD("get_piece_count"), &LargeTexture::get_piece_count);
	ClassDB::bind_method(D_METHOD("get_piece_offset", "idx"), &LargeTexture::get_piece_offset);
	ClassDB::bind_method(D_METHOD("get_piece_texture", "idx"), &LargeTexture::get_piece_texture);

	ClassDB::bind_method(D_METHOD("_set_data", "data"), &LargeTexture::_set_data);
	ClassDB::bind_method(D_METHOD("_get_data"), &LargeTexture::_get_data);

	ADD_PROPERTY(PropertyInfo(Variant::ARRAY, "_data", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR | PROPERTY_USAGE_INTERNAL), "_set_data", "_get_data");
}

void LargeTexture::draw(RID p_canvas_item, const Point2 &p_pos, const Color &p_modulate, bool p_transpose, const Ref<Texture> &p_normal_map) const {
	for (int i = 0; i < pieces.size(); i++) {
		// TODO
		pieces[i].texture->draw(p_canvas_item, pieces[i].offset + p_pos, p_modulate, p_transpose, p_normal_map);
	}
}

void LargeTexture::draw_rect(RID p_canvas_item, const Rect2 &p_rect, bool p_tile, const Color &p_modulate, bool p_transpose, const Ref<Texture> &p_normal_map) const {
	//tiling not supported for this
	if (size.x == 0 || size.y == 0) {
		return;
	}

	Size2 scale = p_rect.size / size;

	for (int i = 0; i < pieces.size(); i++) {
		// TODO
		pieces[i].texture->draw_rect(p_canvas_item, Rect2(pieces[i].offset * scale + p_rect.position, pieces[i].texture->get_size() * scale), false, p_modulate, p_transpose, p_normal_map);
	}
}
void LargeTexture::draw_rect_region(RID p_canvas_item, const Rect2 &p_rect, const Rect2 &p_src_rect, const Color &p_modulate, bool p_transpose, const Ref<Texture> &p_normal_map, bool p_clip_uv) const {
	//tiling not supported for this
	if (p_src_rect.size.x == 0 || p_src_rect.size.y == 0) {
		return;
	}

	Size2 scale = p_rect.size / p_src_rect.size;

	for (int i = 0; i < pieces.size(); i++) {
		// TODO
		Rect2 rect(pieces[i].offset, pieces[i].texture->get_size());
		if (!p_src_rect.intersects(rect)) {
			continue;
		}
		Rect2 local = p_src_rect.clip(rect);
		Rect2 target = local;
		target.size *= scale;
		target.position = p_rect.position + (p_src_rect.position + rect.position) * scale;
		local.position -= rect.position;
		pieces[i].texture->draw_rect_region(p_canvas_item, target, local, p_modulate, p_transpose, p_normal_map, false);
	}
}

bool LargeTexture::is_pixel_opaque(int p_x, int p_y) const {
	for (int i = 0; i < pieces.size(); i++) {
		// TODO
		if (!pieces[i].texture.is_valid()) {
			continue;
		}

		Rect2 rect(pieces[i].offset, pieces[i].texture->get_size());
		if (rect.has_point(Point2(p_x, p_y))) {
			return pieces[i].texture->is_pixel_opaque(p_x - rect.position.x, p_y - rect.position.y);
		}
	}

	return true;
}

LargeTexture::LargeTexture() {
}

///////////////////////////////////////////////

void CubeMap::set_flags(uint32_t p_flags) {
	flags = p_flags;
	if (_is_valid()) {
		RS::get_singleton()->texture_set_flags(cubemap, flags);
	}
}

uint32_t CubeMap::get_flags() const {
	return flags;
}

void CubeMap::set_side(Side p_side, const Ref<Image> &p_image) {
	ERR_FAIL_COND(p_image.is_null());
	ERR_FAIL_COND(p_image->empty());
	ERR_FAIL_INDEX(p_side, 6);

	if (!_is_valid()) {
		format = p_image->get_format();
		w = p_image->get_width();
		h = p_image->get_height();
		RS::get_singleton()->texture_allocate(cubemap, w, h, 0, p_image->get_format(), RS::TEXTURE_TYPE_CUBEMAP, flags);
	}

	RS::get_singleton()->texture_set_data(cubemap, p_image, RS::CubeMapSide(p_side));
	valid[p_side] = true;
}

Ref<Image> CubeMap::get_side(Side p_side) const {
	ERR_FAIL_INDEX_V(p_side, 6, Ref<Image>());
	if (!valid[p_side]) {
		return Ref<Image>();
	}
	return RS::get_singleton()->texture_get_data(cubemap, RS::CubeMapSide(p_side));
}

Image::Format CubeMap::get_format() const {
	return format;
}
int CubeMap::get_width() const {
	return w;
}
int CubeMap::get_height() const {
	return h;
}

RID CubeMap::get_rid() const {
	return cubemap;
}

void CubeMap::set_storage(Storage p_storage) {
	storage = p_storage;
}

CubeMap::Storage CubeMap::get_storage() const {
	return storage;
}

void CubeMap::set_lossy_storage_quality(float p_lossy_storage_quality) {
	lossy_storage_quality = p_lossy_storage_quality;
}

float CubeMap::get_lossy_storage_quality() const {
	return lossy_storage_quality;
}

void CubeMap::set_path(const String &p_path, bool p_take_over) {
	if (cubemap.is_valid()) {
		RenderingServer::get_singleton()->texture_set_path(cubemap, p_path);
	}

	Resource::set_path(p_path, p_take_over);
}

bool CubeMap::_set(const StringName &p_name, const Variant &p_value) {
	if (p_name == "side/left") {
		set_side(SIDE_LEFT, p_value);
	} else if (p_name == "side/right") {
		set_side(SIDE_RIGHT, p_value);
	} else if (p_name == "side/bottom") {
		set_side(SIDE_BOTTOM, p_value);
	} else if (p_name == "side/top") {
		set_side(SIDE_TOP, p_value);
	} else if (p_name == "side/front") {
		set_side(SIDE_FRONT, p_value);
	} else if (p_name == "side/back") {
		set_side(SIDE_BACK, p_value);
	} else if (p_name == "storage") {
		storage = Storage(p_value.operator int());
	} else if (p_name == "lossy_quality") {
		lossy_storage_quality = p_value;
	} else {
		return false;
	}

	return true;
}

bool CubeMap::_get(const StringName &p_name, Variant &r_ret) const {
	if (p_name == "side/left") {
		r_ret = get_side(SIDE_LEFT);
	} else if (p_name == "side/right") {
		r_ret = get_side(SIDE_RIGHT);
	} else if (p_name == "side/bottom") {
		r_ret = get_side(SIDE_BOTTOM);
	} else if (p_name == "side/top") {
		r_ret = get_side(SIDE_TOP);
	} else if (p_name == "side/front") {
		r_ret = get_side(SIDE_FRONT);
	} else if (p_name == "side/back") {
		r_ret = get_side(SIDE_BACK);
	} else if (p_name == "storage") {
		r_ret = storage;
	} else if (p_name == "lossy_quality") {
		r_ret = lossy_storage_quality;
	} else {
		return false;
	}

	return true;
}

void CubeMap::_get_property_list(List<PropertyInfo> *p_list) const {
	p_list->push_back(PropertyInfo(Variant::OBJECT, "side/left", PROPERTY_HINT_RESOURCE_TYPE, "Image"));
	p_list->push_back(PropertyInfo(Variant::OBJECT, "side/right", PROPERTY_HINT_RESOURCE_TYPE, "Image"));
	p_list->push_back(PropertyInfo(Variant::OBJECT, "side/bottom", PROPERTY_HINT_RESOURCE_TYPE, "Image"));
	p_list->push_back(PropertyInfo(Variant::OBJECT, "side/top", PROPERTY_HINT_RESOURCE_TYPE, "Image"));
	p_list->push_back(PropertyInfo(Variant::OBJECT, "side/front", PROPERTY_HINT_RESOURCE_TYPE, "Image"));
	p_list->push_back(PropertyInfo(Variant::OBJECT, "side/back", PROPERTY_HINT_RESOURCE_TYPE, "Image"));
}

void CubeMap::_bind_methods() {
	ClassDB::bind_method(D_METHOD("get_width"), &CubeMap::get_width);
	ClassDB::bind_method(D_METHOD("get_height"), &CubeMap::get_height);
	ClassDB::bind_method(D_METHOD("set_flags", "flags"), &CubeMap::set_flags);
	ClassDB::bind_method(D_METHOD("get_flags"), &CubeMap::get_flags);
	ClassDB::bind_method(D_METHOD("set_side", "side", "image"), &CubeMap::set_side);
	ClassDB::bind_method(D_METHOD("get_side", "side"), &CubeMap::get_side);
	ClassDB::bind_method(D_METHOD("set_storage", "mode"), &CubeMap::set_storage);
	ClassDB::bind_method(D_METHOD("get_storage"), &CubeMap::get_storage);
	ClassDB::bind_method(D_METHOD("set_lossy_storage_quality", "quality"), &CubeMap::set_lossy_storage_quality);
	ClassDB::bind_method(D_METHOD("get_lossy_storage_quality"), &CubeMap::get_lossy_storage_quality);

	ADD_PROPERTY(PropertyInfo(Variant::INT, "flags", PROPERTY_HINT_FLAGS, "Mipmaps,Repeat,Filter"), "set_flags", "get_flags");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "storage_mode", PROPERTY_HINT_ENUM, "Raw,Lossy Compressed,Lossless Compressed"), "set_storage", "get_storage");
	ADD_PROPERTY(PropertyInfo(Variant::REAL, "lossy_storage_quality"), "set_lossy_storage_quality", "get_lossy_storage_quality");

	BIND_ENUM_CONSTANT(STORAGE_RAW);
	BIND_ENUM_CONSTANT(STORAGE_COMPRESS_LOSSY);
	BIND_ENUM_CONSTANT(STORAGE_COMPRESS_LOSSLESS);

	BIND_ENUM_CONSTANT(SIDE_LEFT);
	BIND_ENUM_CONSTANT(SIDE_RIGHT);
	BIND_ENUM_CONSTANT(SIDE_BOTTOM);
	BIND_ENUM_CONSTANT(SIDE_TOP);
	BIND_ENUM_CONSTANT(SIDE_FRONT);
	BIND_ENUM_CONSTANT(SIDE_BACK);

	BIND_ENUM_CONSTANT(FLAG_MIPMAPS);
	BIND_ENUM_CONSTANT(FLAG_REPEAT);
	BIND_ENUM_CONSTANT(FLAG_FILTER);
	BIND_ENUM_CONSTANT(FLAGS_DEFAULT);
}

CubeMap::CubeMap() {
	w = h = 0;
	flags = FLAGS_DEFAULT;
	for (int i = 0; i < 6; i++) {
		valid[i] = false;
	}
	cubemap = RID_PRIME(RenderingServer::get_singleton()->texture_create());
	storage = STORAGE_RAW;
	lossy_storage_quality = 0.7;
	format = Image::FORMAT_BPTC_RGBA;
}

CubeMap::~CubeMap() {
	RenderingServer::get_singleton()->free(cubemap);
}

/*	BIND_ENUM(CubeMapSize);
	BIND_ENUM_CONSTANT( FLAG_CUBEMAP );
	BIND_ENUM_CONSTANT( CUBEMAP_LEFT );
	BIND_ENUM_CONSTANT( CUBEMAP_RIGHT );
	BIND_ENUM_CONSTANT( CUBEMAP_BOTTOM );
	BIND_ENUM_CONSTANT( CUBEMAP_TOP );
	BIND_ENUM_CONSTANT( CUBEMAP_FRONT );
	BIND_ENUM_CONSTANT( CUBEMAP_BACK );
*/
///////////////////////////

void CurveTexture::_bind_methods() {
	ClassDB::bind_method(D_METHOD("set_width", "width"), &CurveTexture::set_width);

	ClassDB::bind_method(D_METHOD("set_curve", "curve"), &CurveTexture::set_curve);
	ClassDB::bind_method(D_METHOD("get_curve"), &CurveTexture::get_curve);

	ClassDB::bind_method(D_METHOD("_update"), &CurveTexture::_update);

	ADD_PROPERTY(PropertyInfo(Variant::INT, "width", PROPERTY_HINT_RANGE, "1,4096"), "set_width", "get_width");
	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "curve", PROPERTY_HINT_RESOURCE_TYPE, "Curve"), "set_curve", "get_curve");
}

void CurveTexture::set_width(int p_width) {
	ERR_FAIL_COND(p_width < 32 || p_width > 4096);
	_width = p_width;
	_update();
}

int CurveTexture::get_width() const {
	return _width;
}

void CurveTexture::ensure_default_setup(float p_min, float p_max) {
	if (_curve.is_null()) {
		Ref<Curve> curve = Ref<Curve>(memnew(Curve));
		curve->add_point(Vector2(0, 1));
		curve->add_point(Vector2(1, 1));
		curve->set_min_value(p_min);
		curve->set_max_value(p_max);
		set_curve(curve);
		// Min and max is 0..1 by default
	}
}

void CurveTexture::set_curve(Ref<Curve> p_curve) {
	if (_curve != p_curve) {
		if (_curve.is_valid()) {
			_curve->disconnect(CoreStringNames::get_singleton()->changed, this, "_update");
		}
		_curve = p_curve;
		if (_curve.is_valid()) {
			_curve->connect(CoreStringNames::get_singleton()->changed, this, "_update");
		}
		_update();
	}
}

void CurveTexture::_update() {
	PoolVector<uint8_t> data;
	data.resize(_width * sizeof(float));

	// The array is locked in that scope
	{
		PoolVector<uint8_t>::Write wd8 = data.write();
		float *wd = (float *)wd8.ptr();

		if (_curve.is_valid()) {
			Curve &curve = **_curve;
			for (int i = 0; i < _width; ++i) {
				float t = i / static_cast<float>(_width);
				wd[i] = curve.interpolate_baked(t);
			}

		} else {
			for (int i = 0; i < _width; ++i) {
				wd[i] = 0;
			}
		}
	}

	Ref<Image> image = memnew(Image(_width, 1, false, Image::FORMAT_RF, data));

	RS::get_singleton()->texture_allocate(_texture, _width, 1, 0, Image::FORMAT_RF, RS::TEXTURE_TYPE_2D, RS::TEXTURE_FLAG_FILTER);
	RS::get_singleton()->texture_set_data(_texture, image);

	emit_changed();
}

Ref<Curve> CurveTexture::get_curve() const {
	return _curve;
}

RID CurveTexture::get_rid() const {
	return _texture;
}

CurveTexture::CurveTexture() {
	_width = 2048;
	_texture = RID_PRIME(RS::get_singleton()->texture_create());
}
CurveTexture::~CurveTexture() {
	RS::get_singleton()->free(_texture);
}
//////////////////

//setter and getter names for property serialization
#define COLOR_RAMP_GET_OFFSETS "get_offsets"
#define COLOR_RAMP_GET_COLORS "get_colors"
#define COLOR_RAMP_SET_OFFSETS "set_offsets"
#define COLOR_RAMP_SET_COLORS "set_colors"

GradientTexture::GradientTexture() {
	update_pending = false;
	width = 2048;

	texture = RID_PRIME(RS::get_singleton()->texture_create());
	_queue_update();
}

GradientTexture::~GradientTexture() {
	RS::get_singleton()->free(texture);
}

void GradientTexture::_bind_methods() {
	ClassDB::bind_method(D_METHOD("set_gradient", "gradient"), &GradientTexture::set_gradient);
	ClassDB::bind_method(D_METHOD("get_gradient"), &GradientTexture::get_gradient);

	ClassDB::bind_method(D_METHOD("set_width", "width"), &GradientTexture::set_width);
	// The `get_width()` method is already exposed by the parent class Texture.

	ClassDB::bind_method(D_METHOD("set_use_hdr", "enabled"), &GradientTexture::set_use_hdr);
	ClassDB::bind_method(D_METHOD("is_using_hdr"), &GradientTexture::is_using_hdr);

	ClassDB::bind_method(D_METHOD("_update"), &GradientTexture::_update);

	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "gradient", PROPERTY_HINT_RESOURCE_TYPE, "Gradient"), "set_gradient", "get_gradient");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "width", PROPERTY_HINT_RANGE, "1,4096"), "set_width", "get_width");
	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "use_hdr"), "set_use_hdr", "is_using_hdr");
}

void GradientTexture::set_gradient(Ref<Gradient> p_gradient) {
	if (p_gradient == gradient) {
		return;
	}
	if (gradient.is_valid()) {
		gradient->disconnect(CoreStringNames::get_singleton()->changed, this, "_update");
	}
	gradient = p_gradient;
	if (gradient.is_valid()) {
		gradient->connect(CoreStringNames::get_singleton()->changed, this, "_update");
	}
	_update();
	emit_changed();
}

Ref<Gradient> GradientTexture::get_gradient() const {
	return gradient;
}

void GradientTexture::_queue_update() {
	if (update_pending) {
		return;
	}

	update_pending = true;
	call_deferred("_update");
}

void GradientTexture::_update() {
	update_pending = false;

	if (gradient.is_null()) {
		return;
	}

	if (use_hdr) {
		// High dynamic range.
		Ref<Image> image = memnew(Image(width, 1, false, Image::FORMAT_RGBAF));
		Gradient &g = **gradient;
		// `create()` isn't available for non-uint8_t data, so fill in the data manually.
		image->lock();
		for (int i = 0; i < width; i++) {
			float ofs = float(i) / (width - 1);
			image->set_pixel(i, 0, g.get_color_at_offset(ofs));
		}
		image->unlock();

		RS::get_singleton()->texture_allocate(texture, width, 1, 0, Image::FORMAT_RGBAF, RS::TEXTURE_TYPE_2D, RS::TEXTURE_FLAG_FILTER);
		RS::get_singleton()->texture_set_data(texture, image);
	} else {
		// Low dynamic range. "Overbright" colors will be clamped.
		PoolVector<uint8_t> data;
		data.resize(width * 4);
		{
			PoolVector<uint8_t>::Write wd8 = data.write();
			Gradient &g = **gradient;

			for (int i = 0; i < width; i++) {
				float ofs = float(i) / (width - 1);
				Color color = g.get_color_at_offset(ofs);

				wd8[i * 4 + 0] = uint8_t(CLAMP(color.r * 255.0, 0, 255));
				wd8[i * 4 + 1] = uint8_t(CLAMP(color.g * 255.0, 0, 255));
				wd8[i * 4 + 2] = uint8_t(CLAMP(color.b * 255.0, 0, 255));
				wd8[i * 4 + 3] = uint8_t(CLAMP(color.a * 255.0, 0, 255));
			}
		}

		Ref<Image> image = memnew(Image(width, 1, false, Image::FORMAT_RGBA8, data));
		RS::get_singleton()->texture_allocate(texture, width, 1, 0, Image::FORMAT_RGBA8, RS::TEXTURE_TYPE_2D, RS::TEXTURE_FLAG_FILTER);
		RS::get_singleton()->texture_set_data(texture, image);
	}

	emit_changed();
}

void GradientTexture::set_width(int p_width) {
	width = p_width;
	_queue_update();
}
int GradientTexture::get_width() const {
	return width;
}

void GradientTexture::set_use_hdr(bool p_enabled) {
	if (p_enabled == use_hdr) {
		return;
	}

	use_hdr = p_enabled;
	_queue_update();
}

bool GradientTexture::is_using_hdr() const {
	return use_hdr;
}

Ref<Image> GradientTexture::get_data() const {
	return RenderingServer::get_singleton()->texture_get_data(texture);
}

GradientTexture2D::GradientTexture2D() {
	texture = RID_PRIME(RS::get_singleton()->texture_create());
	_queue_update();
}

GradientTexture2D::~GradientTexture2D() {
	RS::get_singleton()->free(texture);
}

void GradientTexture2D::set_gradient(Ref<Gradient> p_gradient) {
	if (gradient == p_gradient) {
		return;
	}
	if (gradient.is_valid()) {
		gradient->disconnect(CoreStringNames::get_singleton()->changed, this, "_queue_update");
	}
	gradient = p_gradient;
	if (gradient.is_valid()) {
		gradient->connect(CoreStringNames::get_singleton()->changed, this, "_queue_update");
	}
	_queue_update();
}

Ref<Gradient> GradientTexture2D::get_gradient() const {
	return gradient;
}

void GradientTexture2D::_queue_update() {
	if (update_pending) {
		return;
	}
	update_pending = true;
	call_deferred("_update");
}

void GradientTexture2D::_update() {
	update_pending = false;

	if (gradient.is_null()) {
		return;
	}
	Ref<Image> image;
	image.instance();

	if (gradient->get_points_count() <= 1) { // No need to interpolate.
		image->create(width, height, false, (use_hdr) ? Image::FORMAT_RGBAF : Image::FORMAT_RGBA8);
		image->fill((gradient->get_points_count() == 1) ? gradient->get_color(0) : Color(0, 0, 0, 1));
	} else {
		if (use_hdr) {
			image->create(width, height, false, Image::FORMAT_RGBAF);
			Gradient &g = **gradient;
			// `create()` isn't available for non-uint8_t data, so fill in the data manually.
			image->lock();
			for (int y = 0; y < height; y++) {
				for (int x = 0; x < width; x++) {
					float ofs = _get_gradient_offset_at(x, y);
					image->set_pixel(x, y, g.get_color_at_offset(ofs));
				}
			}
			image->unlock();
		} else {
			PoolVector<uint8_t> data;
			data.resize(width * height * 4);
			{
				uint8_t *wd8 = data.write().ptr();
				Gradient &g = **gradient;
				for (int y = 0; y < height; y++) {
					for (int x = 0; x < width; x++) {
						float ofs = _get_gradient_offset_at(x, y);
						const Color &c = g.get_color_at_offset(ofs);

						wd8[(x + (y * width)) * 4 + 0] = uint8_t(CLAMP(c.r * 255.0, 0, 255));
						wd8[(x + (y * width)) * 4 + 1] = uint8_t(CLAMP(c.g * 255.0, 0, 255));
						wd8[(x + (y * width)) * 4 + 2] = uint8_t(CLAMP(c.b * 255.0, 0, 255));
						wd8[(x + (y * width)) * 4 + 3] = uint8_t(CLAMP(c.a * 255.0, 0, 255));
					}
				}
			}
			image->create(width, height, false, Image::FORMAT_RGBA8, data);
		}
	}
	RS::get_singleton()->texture_allocate(texture, width, height, 0, image->get_format(), RS::TEXTURE_TYPE_2D, RS::TEXTURE_FLAG_FILTER);
	RS::get_singleton()->texture_set_data(texture, image);

	emit_changed();
}

float GradientTexture2D::_get_gradient_offset_at(int x, int y) const {
	if (fill_to == fill_from) {
		return 0;
	}
	float ofs = 0;
	Vector2 pos;
	if (width > 1) {
		pos.x = static_cast<float>(x) / (width - 1);
	}
	if (height > 1) {
		pos.y = static_cast<float>(y) / (height - 1);
	}
	if (fill == Fill::FILL_LINEAR) {
		Vector2 segment[2];
		segment[0] = fill_from;
		segment[1] = fill_to;
		Vector2 closest = Geometry::get_closest_point_to_segment_uncapped_2d(pos, &segment[0]);
		ofs = (closest - fill_from).length() / (fill_to - fill_from).length();
		if ((closest - fill_from).dot(fill_to - fill_from) < 0) {
			ofs *= -1;
		}
	} else if (fill == Fill::FILL_RADIAL) {
		ofs = (pos - fill_from).length() / (fill_to - fill_from).length();
	}
	if (repeat == Repeat::REPEAT_NONE) {
		ofs = CLAMP(ofs, 0.0, 1.0);
	} else if (repeat == Repeat::REPEAT) {
		ofs = Math::fmod(ofs, 1.0f);
		if (ofs < 0) {
			ofs = 1 + ofs;
		}
	} else if (repeat == Repeat::REPEAT_MIRROR) {
		ofs = Math::abs(ofs);
		ofs = Math::fmod(ofs, 2.0f);
		if (ofs > 1.0) {
			ofs = 2.0 - ofs;
		}
	}
	return ofs;
}

void GradientTexture2D::set_width(int p_width) {
	width = p_width;
	_queue_update();
}

int GradientTexture2D::get_width() const {
	return width;
}

void GradientTexture2D::set_height(int p_height) {
	height = p_height;
	_queue_update();
}

int GradientTexture2D::get_height() const {
	return height;
}

void GradientTexture2D::set_flags(uint32_t p_flags) {
	if (p_flags == flags) {
		return;
	}

	flags = p_flags;
	RS::get_singleton()->texture_set_flags(texture, flags);
	_change_notify("flags");
	emit_changed();
}

uint32_t GradientTexture2D::get_flags() const {
	return flags;
}

void GradientTexture2D::set_use_hdr(bool p_enabled) {
	if (p_enabled == use_hdr) {
		return;
	}

	use_hdr = p_enabled;
	_queue_update();
}

bool GradientTexture2D::is_using_hdr() const {
	return use_hdr;
}

void GradientTexture2D::set_fill_from(Vector2 p_fill_from) {
	fill_from = p_fill_from;
	_queue_update();
}

Vector2 GradientTexture2D::get_fill_from() const {
	return fill_from;
}

void GradientTexture2D::set_fill_to(Vector2 p_fill_to) {
	fill_to = p_fill_to;
	_queue_update();
}

Vector2 GradientTexture2D::get_fill_to() const {
	return fill_to;
}

void GradientTexture2D::set_fill(Fill p_fill) {
	fill = p_fill;
	_queue_update();
}

GradientTexture2D::Fill GradientTexture2D::get_fill() const {
	return fill;
}

void GradientTexture2D::set_repeat(Repeat p_repeat) {
	repeat = p_repeat;
	_queue_update();
}

GradientTexture2D::Repeat GradientTexture2D::get_repeat() const {
	return repeat;
}

RID GradientTexture2D::get_rid() const {
	if (!texture.is_valid()) {
		texture = RID();
	}
	return texture;
}

Ref<Image> GradientTexture2D::get_data() const {
	if (!texture.is_valid()) {
		return Ref<Image>();
	}
	return RS::get_singleton()->texture_get_data(texture);
}

void GradientTexture2D::_bind_methods() {
	ClassDB::bind_method(D_METHOD("set_gradient", "gradient"), &GradientTexture2D::set_gradient);
	ClassDB::bind_method(D_METHOD("get_gradient"), &GradientTexture2D::get_gradient);

	ClassDB::bind_method(D_METHOD("set_width", "width"), &GradientTexture2D::set_width);
	ClassDB::bind_method(D_METHOD("set_height", "height"), &GradientTexture2D::set_height);

	ClassDB::bind_method(D_METHOD("set_use_hdr", "enabled"), &GradientTexture2D::set_use_hdr);
	ClassDB::bind_method(D_METHOD("is_using_hdr"), &GradientTexture2D::is_using_hdr);

	ClassDB::bind_method(D_METHOD("set_fill", "fill"), &GradientTexture2D::set_fill);
	ClassDB::bind_method(D_METHOD("get_fill"), &GradientTexture2D::get_fill);
	ClassDB::bind_method(D_METHOD("set_fill_from", "fill_from"), &GradientTexture2D::set_fill_from);
	ClassDB::bind_method(D_METHOD("get_fill_from"), &GradientTexture2D::get_fill_from);
	ClassDB::bind_method(D_METHOD("set_fill_to", "fill_to"), &GradientTexture2D::set_fill_to);
	ClassDB::bind_method(D_METHOD("get_fill_to"), &GradientTexture2D::get_fill_to);

	ClassDB::bind_method(D_METHOD("set_repeat", "repeat"), &GradientTexture2D::set_repeat);
	ClassDB::bind_method(D_METHOD("get_repeat"), &GradientTexture2D::get_repeat);

	ClassDB::bind_method(D_METHOD("_update"), &GradientTexture2D::_update);
	ClassDB::bind_method(D_METHOD("_queue_update"), &GradientTexture2D::_queue_update);

	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "gradient", PROPERTY_HINT_RESOURCE_TYPE, "Gradient"), "set_gradient", "get_gradient");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "width", PROPERTY_HINT_RANGE, "1,2048,1,or_greater"), "set_width", "get_width");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "height", PROPERTY_HINT_RANGE, "1,2048,1,or_greater"), "set_height", "get_height");
	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "use_hdr"), "set_use_hdr", "is_using_hdr");

	ADD_GROUP("Fill", "fill_");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "fill", PROPERTY_HINT_ENUM, "Linear,Radial"), "set_fill", "get_fill");
	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "fill_from"), "set_fill_from", "get_fill_from");
	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "fill_to"), "set_fill_to", "get_fill_to");

	ADD_GROUP("Repeat", "repeat_");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "repeat", PROPERTY_HINT_ENUM, "No Repeat,Repeat,Mirror Repeat"), "set_repeat", "get_repeat");

	BIND_ENUM_CONSTANT(FILL_LINEAR);
	BIND_ENUM_CONSTANT(FILL_RADIAL);

	BIND_ENUM_CONSTANT(REPEAT_NONE);
	BIND_ENUM_CONSTANT(REPEAT);
	BIND_ENUM_CONSTANT(REPEAT_MIRROR);
}

//////////////////////////////////////

void ProxyTexture::_bind_methods() {
	ClassDB::bind_method(D_METHOD("set_base", "base"), &ProxyTexture::set_base);
	ClassDB::bind_method(D_METHOD("get_base"), &ProxyTexture::get_base);

	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "base", PROPERTY_HINT_RESOURCE_TYPE, "Texture"), "set_base", "get_base");
}

void ProxyTexture::set_base(const Ref<Texture> &p_texture) {
	ERR_FAIL_COND(p_texture == this);
	base = p_texture;
	if (base.is_valid()) {
		RS::get_singleton()->texture_set_proxy(proxy, base->get_rid());
	} else {
		RS::get_singleton()->texture_set_proxy(proxy, RID());
	}
}

Ref<Texture> ProxyTexture::get_base() const {
	return base;
}

int ProxyTexture::get_width() const {
	if (base.is_valid()) {
		return base->get_width();
	}
	return 1;
}
int ProxyTexture::get_height() const {
	if (base.is_valid()) {
		return base->get_height();
	}
	return 1;
}
RID ProxyTexture::get_rid() const {
	return proxy;
}

bool ProxyTexture::has_alpha() const {
	if (base.is_valid()) {
		return base->has_alpha();
	}
	return false;
}

void ProxyTexture::set_flags(uint32_t p_flags) {
}

uint32_t ProxyTexture::get_flags() const {
	if (base.is_valid()) {
		return base->get_flags();
	}
	return 0;
}

ProxyTexture::ProxyTexture() {
	proxy = RID_PRIME(RS::get_singleton()->texture_create());
}

ProxyTexture::~ProxyTexture() {
	RS::get_singleton()->free(proxy);
}
//////////////////////////////////////////////

void AnimatedTexture::_update_proxy() {
	RWLockRead r(rw_lock);

	float delta;
	if (prev_ticks == 0) {
		delta = 0;
		prev_ticks = OS::get_singleton()->get_ticks_usec();
	} else {
		uint64_t ticks = OS::get_singleton()->get_ticks_usec();
		delta = float(double(ticks - prev_ticks) / 1000000.0);
		prev_ticks = ticks;
	}

	time += delta;

	float limit;

	if (fps == 0) {
		limit = 0;
	} else {
		limit = 1.0 / fps;
	}

	int iter_max = frame_count;
	while (iter_max && !pause) {
		float frame_limit = limit + frames[current_frame].delay_sec;

		if (time > frame_limit) {
			current_frame++;
			if (current_frame >= frame_count) {
				if (oneshot) {
					current_frame = frame_count - 1;
				} else {
					current_frame = 0;
				}
			}
			time -= frame_limit;
			_change_notify("current_frame");
		} else {
			break;
		}
		iter_max--;
	}

	if (frames[current_frame].texture.is_valid()) {
		RenderingServer::get_singleton()->texture_set_proxy(proxy, frames[current_frame].texture->get_rid());
	}
}

void AnimatedTexture::set_frames(int p_frames) {
	ERR_FAIL_COND(p_frames < 1 || p_frames > MAX_FRAMES);

	RWLockWrite r(rw_lock);

	frame_count = p_frames;
}
int AnimatedTexture::get_frames() const {
	return frame_count;
}

void AnimatedTexture::set_current_frame(int p_frame) {
	ERR_FAIL_COND(p_frame < 0 || p_frame >= frame_count);

	RWLockWrite r(rw_lock);

	current_frame = p_frame;
}
int AnimatedTexture::get_current_frame() const {
	return current_frame;
}

void AnimatedTexture::set_pause(bool p_pause) {
	RWLockWrite r(rw_lock);
	pause = p_pause;
}
bool AnimatedTexture::get_pause() const {
	return pause;
}

void AnimatedTexture::set_oneshot(bool p_oneshot) {
	RWLockWrite r(rw_lock);
	oneshot = p_oneshot;
}
bool AnimatedTexture::get_oneshot() const {
	return oneshot;
}

void AnimatedTexture::set_frame_texture(int p_frame, const Ref<Texture> &p_texture) {
	ERR_FAIL_COND(p_texture == this);
	ERR_FAIL_INDEX(p_frame, MAX_FRAMES);

	RWLockWrite w(rw_lock);

	frames[p_frame].texture = p_texture;
}
Ref<Texture> AnimatedTexture::get_frame_texture(int p_frame) const {
	ERR_FAIL_INDEX_V(p_frame, MAX_FRAMES, Ref<Texture>());

	RWLockRead r(rw_lock);

	return frames[p_frame].texture;
}

void AnimatedTexture::set_frame_delay(int p_frame, float p_delay_sec) {
	ERR_FAIL_INDEX(p_frame, MAX_FRAMES);

	RWLockRead r(rw_lock);

	frames[p_frame].delay_sec = p_delay_sec;
}
float AnimatedTexture::get_frame_delay(int p_frame) const {
	ERR_FAIL_INDEX_V(p_frame, MAX_FRAMES, 0);

	RWLockRead r(rw_lock);

	return frames[p_frame].delay_sec;
}

void AnimatedTexture::set_fps(float p_fps) {
	ERR_FAIL_COND(p_fps < 0 || p_fps >= 1000);

	fps = p_fps;
}
float AnimatedTexture::get_fps() const {
	return fps;
}

int AnimatedTexture::get_width() const {
	RWLockRead r(rw_lock);

	if (!frames[current_frame].texture.is_valid()) {
		return 1;
	}

	return frames[current_frame].texture->get_width();
}
int AnimatedTexture::get_height() const {
	RWLockRead r(rw_lock);

	if (!frames[current_frame].texture.is_valid()) {
		return 1;
	}

	return frames[current_frame].texture->get_height();
}
RID AnimatedTexture::get_rid() const {
	return proxy;
}

bool AnimatedTexture::has_alpha() const {
	RWLockRead r(rw_lock);

	if (!frames[current_frame].texture.is_valid()) {
		return false;
	}

	return frames[current_frame].texture->has_alpha();
}

Ref<Image> AnimatedTexture::get_data() const {
	RWLockRead r(rw_lock);

	if (!frames[current_frame].texture.is_valid()) {
		return Ref<Image>();
	}

	return frames[current_frame].texture->get_data();
}

bool AnimatedTexture::is_pixel_opaque(int p_x, int p_y) const {
	RWLockRead r(rw_lock);

	if (frames[current_frame].texture.is_valid()) {
		return frames[current_frame].texture->is_pixel_opaque(p_x, p_y);
	}
	return true;
}

void AnimatedTexture::set_flags(uint32_t p_flags) {}

uint32_t AnimatedTexture::get_flags() const {
	RWLockRead r(rw_lock);

	if (!frames[current_frame].texture.is_valid()) {
		return 0;
	}

	return frames[current_frame].texture->get_flags();
}

void AnimatedTexture::_validate_property(PropertyInfo &property) const {
	String prop = property.name;
	if (prop.begins_with("frame_")) {
		int frame = prop.get_slicec('/', 0).get_slicec('_', 1).to_int();
		if (frame >= frame_count) {
			property.usage = 0;
		}
	}
}

void AnimatedTexture::_bind_methods() {
	ClassDB::bind_method(D_METHOD("set_frames", "frames"), &AnimatedTexture::set_frames);
	ClassDB::bind_method(D_METHOD("get_frames"), &AnimatedTexture::get_frames);

	ClassDB::bind_method(D_METHOD("set_current_frame", "frame"), &AnimatedTexture::set_current_frame);
	ClassDB::bind_method(D_METHOD("get_current_frame"), &AnimatedTexture::get_current_frame);

	ClassDB::bind_method(D_METHOD("set_pause", "pause"), &AnimatedTexture::set_pause);
	ClassDB::bind_method(D_METHOD("get_pause"), &AnimatedTexture::get_pause);

	ClassDB::bind_method(D_METHOD("set_oneshot", "oneshot"), &AnimatedTexture::set_oneshot);
	ClassDB::bind_method(D_METHOD("get_oneshot"), &AnimatedTexture::get_oneshot);

	ClassDB::bind_method(D_METHOD("set_fps", "fps"), &AnimatedTexture::set_fps);
	ClassDB::bind_method(D_METHOD("get_fps"), &AnimatedTexture::get_fps);

	ClassDB::bind_method(D_METHOD("set_frame_texture", "frame", "texture"), &AnimatedTexture::set_frame_texture);
	ClassDB::bind_method(D_METHOD("get_frame_texture", "frame"), &AnimatedTexture::get_frame_texture);

	ClassDB::bind_method(D_METHOD("set_frame_delay", "frame", "delay"), &AnimatedTexture::set_frame_delay);
	ClassDB::bind_method(D_METHOD("get_frame_delay", "frame"), &AnimatedTexture::get_frame_delay);

	ClassDB::bind_method(D_METHOD("_update_proxy"), &AnimatedTexture::_update_proxy);

	ADD_PROPERTY(PropertyInfo(Variant::INT, "frames", PROPERTY_HINT_RANGE, "1," + itos(MAX_FRAMES), PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_UPDATE_ALL_IF_MODIFIED), "set_frames", "get_frames");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "current_frame", PROPERTY_HINT_NONE, "", 0), "set_current_frame", "get_current_frame");
	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "pause"), "set_pause", "get_pause");
	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "oneshot"), "set_oneshot", "get_oneshot");
	ADD_PROPERTY(PropertyInfo(Variant::REAL, "fps", PROPERTY_HINT_RANGE, "0,1024,0.1"), "set_fps", "get_fps");

	for (int i = 0; i < MAX_FRAMES; i++) {
		ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "frame_" + itos(i) + "/texture", PROPERTY_HINT_RESOURCE_TYPE, "Texture", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_INTERNAL), "set_frame_texture", "get_frame_texture", i);
		ADD_PROPERTYI(PropertyInfo(Variant::REAL, "frame_" + itos(i) + "/delay_sec", PROPERTY_HINT_RANGE, "0.0,16.0,0.01", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_INTERNAL), "set_frame_delay", "get_frame_delay", i);
	}

	BIND_CONSTANT(MAX_FRAMES);
}

AnimatedTexture::AnimatedTexture() {
	proxy = RID_PRIME(RS::get_singleton()->texture_create());
	RenderingServer::get_singleton()->texture_set_force_redraw_if_visible(proxy, true);
	time = 0;
	frame_count = 1;
	fps = 4;
	prev_ticks = 0;
	current_frame = 0;
	pause = false;
	oneshot = false;
	RenderingServer::get_singleton()->connect("frame_pre_draw", this, "_update_proxy");
}

AnimatedTexture::~AnimatedTexture() {
	RS::get_singleton()->free(proxy);
}
///////////////////////////////

void TextureLayered::set_flags(uint32_t p_flags) {
	flags = p_flags;

	if (texture.is_valid()) {
		RS::get_singleton()->texture_set_flags(texture, flags);
	}
}

uint32_t TextureLayered::get_flags() const {
	return flags;
}

Image::Format TextureLayered::get_format() const {
	return format;
}

Error TextureLayered::load(const String &p_path) {
	Error error;
	FileAccess *f = FileAccess::open(p_path, FileAccess::READ, &error);
	ERR_FAIL_COND_V(error, error);

	uint8_t header[5] = { 0, 0, 0, 0, 0 };
	f->get_buffer(header, 4);

	if (header[0] == 'G' && header[1] == 'D' && header[2] == '3' && header[3] == 'T') {
		if (!Object::cast_to<Texture3D>(this)) {
			f->close();
			memdelete(f);
			ERR_FAIL_V(ERR_INVALID_DATA);
		}
	} else if (header[0] == 'G' && header[1] == 'D' && header[2] == 'A' && header[3] == 'T') {
		if (!Object::cast_to<TextureArray>(this)) {
			f->close();
			memdelete(f);
			ERR_FAIL_V(ERR_INVALID_DATA);
		}
	} else {
		f->close();
		memdelete(f);
		ERR_FAIL_V_MSG(ERR_INVALID_DATA, "Unrecognized layered texture file format: " + String((const char *)header));
	}

	int tw = f->get_32();
	int th = f->get_32();
	int td = f->get_32();
	int flags = f->get_32(); //texture flags!
	Image::Format format = Image::Format(f->get_32());
	uint32_t compression = f->get_32(); // 0 - lossless (PNG), 1 - vram, 2 - uncompressed

	create(tw, th, td, format, flags);

	for (int layer = 0; layer < td; layer++) {
		Ref<Image> image;
		image.instance();

		if (compression == COMPRESS_LOSSLESS) {
			//look for a PNG file inside

			int mipmaps = f->get_32();
			Vector<Ref<Image>> mipmap_images;

			for (int i = 0; i < mipmaps; i++) {
				uint32_t size = f->get_32();

				PoolVector<uint8_t> pv;
				pv.resize(size);
				{
					PoolVector<uint8_t>::Write w = pv.write();
					f->get_buffer(w.ptr(), size);
				}

				Ref<Image> img = Image::png_unpacker(pv);

				if (img.is_null() || img->empty() || format != img->get_format()) {
					f->close();
					memdelete(f);
					ERR_FAIL_V(ERR_FILE_CORRUPT);
				}

				mipmap_images.push_back(img);
			}

			if (mipmap_images.size() == 1) {
				image = mipmap_images[0];

			} else {
				int total_size = Image::get_image_data_size(tw, th, format, true);
				PoolVector<uint8_t> img_data;
				img_data.resize(total_size);

				{
					PoolVector<uint8_t>::Write w = img_data.write();

					int ofs = 0;
					for (int i = 0; i < mipmap_images.size(); i++) {
						PoolVector<uint8_t> id = mipmap_images[i]->get_data();
						int len = id.size();
						PoolVector<uint8_t>::Read r = id.read();
						memcpy(&w[ofs], r.ptr(), len);
						ofs += len;
					}
				}

				image->create(tw, th, true, format, img_data);
				if (image->empty()) {
					f->close();
					memdelete(f);
					ERR_FAIL_V(ERR_FILE_CORRUPT);
				}
			}

		} else {
			//look for regular format
			bool mipmaps = (flags & Texture::FLAG_MIPMAPS);
			uint64_t total_size = Image::get_image_data_size(tw, th, format, mipmaps);

			PoolVector<uint8_t> img_data;
			img_data.resize(total_size);

			{
				PoolVector<uint8_t>::Write w = img_data.write();
				uint64_t bytes = f->get_buffer(w.ptr(), total_size);
				if (bytes != total_size) {
					f->close();
					memdelete(f);
					ERR_FAIL_V(ERR_FILE_CORRUPT);
				}
			}

			image->create(tw, th, mipmaps, format, img_data);
		}

		set_layer_data(image, layer);
	}

	memdelete(f);

	path_to_file = p_path;
	_change_notify();
	return OK;
}

String TextureLayered::get_load_path() const {
	return path_to_file;
}

uint32_t TextureLayered::get_width() const {
	return width;
}

uint32_t TextureLayered::get_height() const {
	return height;
}

uint32_t TextureLayered::get_depth() const {
	return depth;
}

void TextureLayered::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 TextureLayered::_set_data(const Dictionary &p_data) {
	ERR_FAIL_COND(!p_data.has("width"));
	ERR_FAIL_COND(!p_data.has("height"));
	ERR_FAIL_COND(!p_data.has("depth"));
	ERR_FAIL_COND(!p_data.has("format"));
	ERR_FAIL_COND(!p_data.has("flags"));
	ERR_FAIL_COND(!p_data.has("layers"));
	int w = p_data["width"];
	int h = p_data["height"];
	int d = p_data["depth"];
	Image::Format format = Image::Format(int(p_data["format"]));
	int flags = p_data["flags"];
	Array layers = p_data["layers"];
	ERR_FAIL_COND(layers.size() != d);

	create(w, h, d, format, flags);

	for (int i = 0; i < layers.size(); i++) {
		Ref<Image> img = layers[i];
		ERR_CONTINUE(!img.is_valid());
		ERR_CONTINUE(img->get_format() != format);
		ERR_CONTINUE(img->get_width() != w);
		ERR_CONTINUE(img->get_height() != h);
		set_layer_data(img, i);
	}
}

Dictionary TextureLayered::_get_data() const {
	Dictionary d;
	d["width"] = width;
	d["height"] = height;
	d["depth"] = depth;
	d["flags"] = flags;
	d["format"] = format;

	Array layers;
	for (int i = 0; i < depth; i++) {
		layers.push_back(get_layer_data(i));
	}
	d["layers"] = layers;
	return d;
}

void TextureLayered::create(uint32_t p_width, uint32_t p_height, uint32_t p_depth, Image::Format p_format, uint32_t p_flags) {
	RS::get_singleton()->texture_allocate(texture, p_width, p_height, p_depth, p_format, is_3d ? RS::TEXTURE_TYPE_3D : RS::TEXTURE_TYPE_2D_ARRAY, p_flags);

	width = p_width;
	height = p_height;
	depth = p_depth;
	format = p_format;
	flags = p_flags;
}

void TextureLayered::set_layer_data(const Ref<Image> &p_image, int p_layer) {
	ERR_FAIL_COND(!texture.is_valid());
	ERR_FAIL_COND(!p_image.is_valid());
	ERR_FAIL_COND_MSG(
			p_image->get_width() > width || p_image->get_height() > height,
			vformat("Image size(%dx%d) is bigger than texture size (%dx%d).", p_image->get_width(), p_image->get_height(), width, height));
	RS::get_singleton()->texture_set_data(texture, p_image, p_layer);
}

Ref<Image> TextureLayered::get_layer_data(int p_layer) const {
	ERR_FAIL_COND_V(!texture.is_valid(), Ref<Image>());
	return RS::get_singleton()->texture_get_data(texture, p_layer);
}

void TextureLayered::set_data_partial(const Ref<Image> &p_image, int p_x_ofs, int p_y_ofs, int p_z, int p_mipmap) {
	ERR_FAIL_COND(!texture.is_valid());
	ERR_FAIL_COND(!p_image.is_valid());
	RS::get_singleton()->texture_set_data_partial(texture, p_image, 0, 0, p_image->get_width(), p_image->get_height(), p_x_ofs, p_y_ofs, p_mipmap, p_z);
}

RID TextureLayered::get_rid() const {
	return texture;
}

void TextureLayered::set_path(const String &p_path, bool p_take_over) {
	if (texture.is_valid()) {
		RS::get_singleton()->texture_set_path(texture, p_path);
	}

	Resource::set_path(p_path, p_take_over);
}

void TextureLayered::_bind_methods() {
	ClassDB::bind_method(D_METHOD("set_flags", "flags"), &TextureLayered::set_flags);
	ClassDB::bind_method(D_METHOD("get_flags"), &TextureLayered::get_flags);

	ClassDB::bind_method(D_METHOD("get_format"), &TextureLayered::get_format);

	ClassDB::bind_method(D_METHOD("get_width"), &TextureLayered::get_width);
	ClassDB::bind_method(D_METHOD("get_height"), &TextureLayered::get_height);
	ClassDB::bind_method(D_METHOD("get_depth"), &TextureLayered::get_depth);

	ClassDB::bind_method(D_METHOD("set_layer_data", "image", "layer"), &TextureLayered::set_layer_data);
	ClassDB::bind_method(D_METHOD("get_layer_data", "layer"), &TextureLayered::get_layer_data);
	ClassDB::bind_method(D_METHOD("set_data_partial", "image", "x_offset", "y_offset", "layer", "mipmap"), &TextureLayered::set_data_partial, DEFVAL(0));

	ClassDB::bind_method(D_METHOD("_set_data", "data"), &TextureLayered::_set_data);
	ClassDB::bind_method(D_METHOD("_get_data"), &TextureLayered::_get_data);

	ADD_PROPERTY(PropertyInfo(Variant::INT, "flags", PROPERTY_HINT_FLAGS, "Mipmaps,Repeat,Filter,Anisotropic Filter"), "set_flags", "get_flags");
	ADD_PROPERTY(PropertyInfo(Variant::DICTIONARY, "data", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR), "_set_data", "_get_data");

	BIND_ENUM_CONSTANT(FLAGS_DEFAULT_TEXTURE_ARRAY);
	BIND_ENUM_CONSTANT(FLAGS_DEFAULT_TEXTURE_3D);
	BIND_ENUM_CONSTANT(FLAG_MIPMAPS);
	BIND_ENUM_CONSTANT(FLAG_REPEAT);
	BIND_ENUM_CONSTANT(FLAG_FILTER);
	BIND_ENUM_CONSTANT(FLAG_ANISOTROPIC_FILTER);
}

TextureLayered::TextureLayered(bool p_3d) {
	is_3d = p_3d;
	flags = p_3d ? FLAGS_DEFAULT_TEXTURE_3D : FLAGS_DEFAULT_TEXTURE_ARRAY;
	format = Image::FORMAT_MAX;

	width = 0;
	height = 0;
	depth = 0;

	texture = RID_PRIME(RS::get_singleton()->texture_create());
}

TextureLayered::~TextureLayered() {
	if (texture.is_valid()) {
		RS::get_singleton()->free(texture);
	}
}

void Texture3D::_bind_methods() {
	ClassDB::bind_method(D_METHOD("create", "width", "height", "depth", "format", "flags"), &Texture3D::create, DEFVAL(FLAGS_DEFAULT_TEXTURE_3D));
}

void TextureArray::_bind_methods() {
	ClassDB::bind_method(D_METHOD("create", "width", "height", "depth", "format", "flags"), &TextureArray::create, DEFVAL(FLAGS_DEFAULT_TEXTURE_ARRAY));
}

RES ResourceFormatLoaderTextureLayered::load(const String &p_path, const String &p_original_path, Error *r_error, bool p_no_subresource_cache) {
	if (r_error) {
		*r_error = ERR_CANT_OPEN;
	}

	Ref<TextureLayered> lt;
	Ref<Texture3D> tex3d;
	Ref<TextureArray> texarr;

	if (p_path.ends_with("tex3d")) {
		tex3d.instance();
		lt = tex3d;
	} else if (p_path.ends_with("texarr")) {
		texarr.instance();
		lt = texarr;
	} else {
		ERR_FAIL_V_MSG(RES(), "Unrecognized layered texture extension.");
	}

	Error err = lt->load(p_path);
	if (r_error) {
		*r_error = OK;
	}
	if (err != OK) {
		return RES();
	}

	return lt;
}

void ResourceFormatLoaderTextureLayered::get_recognized_extensions(List<String> *p_extensions) const {
	p_extensions->push_back("tex3d");
	p_extensions->push_back("texarr");
}
bool ResourceFormatLoaderTextureLayered::handles_type(const String &p_type) const {
	return p_type == "Texture3D" || p_type == "TextureArray";
}
String ResourceFormatLoaderTextureLayered::get_resource_type(const String &p_path) const {
	if (p_path.get_extension().to_lower() == "tex3d") {
		return "Texture3D";
	}
	if (p_path.get_extension().to_lower() == "texarr") {
		return "TextureArray";
	}
	return "";
}

void ExternalTexture::_bind_methods() {
	ClassDB::bind_method(D_METHOD("set_size", "size"), &ExternalTexture::set_size);
	ClassDB::bind_method(D_METHOD("get_external_texture_id"), &ExternalTexture::get_external_texture_id);

	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "size"), "set_size", "get_size");
}

uint32_t ExternalTexture::get_external_texture_id() {
	return RenderingServer::get_singleton()->texture_get_texid(texture);
}

void ExternalTexture::set_size(const Size2 &p_size) {
	if (p_size.width > 0 && p_size.height > 0) {
		size = p_size;
		RenderingServer::get_singleton()->texture_set_size_override(texture, size.width, size.height, 0);
	}
}

int ExternalTexture::get_width() const {
	return size.width;
}

int ExternalTexture::get_height() const {
	return size.height;
}

Size2 ExternalTexture::get_size() const {
	return size;
}

RID ExternalTexture::get_rid() const {
	return texture;
}

bool ExternalTexture::has_alpha() const {
	return true;
}

void ExternalTexture::set_flags(uint32_t p_flags) {
	// not supported
}

uint32_t ExternalTexture::get_flags() const {
	return Texture::FLAG_VIDEO_SURFACE;
}

ExternalTexture::ExternalTexture() {
	size = Size2(1.0, 1.0);
	texture = RID_PRIME(RenderingServer::get_singleton()->texture_create());

	RenderingServer::get_singleton()->texture_allocate(texture, size.width, size.height, 0, Image::FORMAT_RGBA8, RS::TEXTURE_TYPE_EXTERNAL, Texture::FLAG_VIDEO_SURFACE);
	_change_notify();
	emit_changed();
}

ExternalTexture::~ExternalTexture() {
	RenderingServer::get_singleton()->free(texture);
}