Add GLES2 2D renderer + Linux display manager

First implementation with Linux display manager.

- Add single-threaded mode for EditorResourcePreview (needed for OpenGL).

Co-authored-by: clayjohn <claynjohn@gmail.com>
Co-authored-by: Fabio Alessandrelli <fabio.alessandrelli@gmail.com>

1 files changed, 672 insertions, 0 deletions

diff --git a/platform/javascript/export/export.cpp b/platform/javascript/export/export.cpp
index 889b0bbd02..503e58f9a8 100644
--- a/platform/javascript/export/export.cpp
+++ b/platform/javascript/export/export.cpp
@@ -32,6 +32,678 @@
 
 #include "export_plugin.h"
 
+/*
+
+class EditorHTTPServer : public Reference {
+private:
+	Ref<TCP_Server> server;
+	Ref<StreamPeerTCP> connection;
+	uint64_t time = 0;
+	uint8_t req_buf[4096];
+	int req_pos = 0;
+
+	void _clear_client() {
+		connection = Ref<StreamPeerTCP>();
+		memset(req_buf, 0, sizeof(req_buf));
+		time = 0;
+		req_pos = 0;
+	}
+
+public:
+	EditorHTTPServer() {
+		server.instance();
+		stop();
+	}
+
+	void stop() {
+		server->stop();
+		_clear_client();
+	}
+
+	Error listen(int p_port, IP_Address p_address) {
+		return server->listen(p_port, p_address);
+	}
+
+	bool is_listening() const {
+		return server->is_listening();
+	}
+
+	void _send_response() {
+		Vector<String> psa = String((char *)req_buf).split("\r\n");
+		int len = psa.size();
+		ERR_FAIL_COND_MSG(len < 4, "Not enough response headers, got: " + itos(len) + ", expected >= 4.");
+
+		Vector<String> req = psa[0].split(" ", false);
+		ERR_FAIL_COND_MSG(req.size() < 2, "Invalid protocol or status code.");
+
+		// Wrong protocol
+		ERR_FAIL_COND_MSG(req[0] != "GET" || req[2] != "HTTP/1.1", "Invalid method or HTTP version.");
+
+		const String cache_path = EditorSettings::get_singleton()->get_cache_dir();
+		const String basereq = "/tmp_js_export";
+		String filepath;
+		String ctype;
+		if (req[1] == basereq + ".html") {
+			filepath = cache_path.plus_file(req[1].get_file());
+			ctype = "text/html";
+		} else if (req[1] == basereq + ".js") {
+			filepath = cache_path.plus_file(req[1].get_file());
+			ctype = "application/javascript";
+		} else if (req[1] == basereq + ".audio.worklet.js") {
+			filepath = cache_path.plus_file(req[1].get_file());
+			ctype = "application/javascript";
+		} else if (req[1] == basereq + ".worker.js") {
+			filepath = cache_path.plus_file(req[1].get_file());
+			ctype = "application/javascript";
+		} else if (req[1] == basereq + ".pck") {
+			filepath = cache_path.plus_file(req[1].get_file());
+			ctype = "application/octet-stream";
+		} else if (req[1] == basereq + ".png" || req[1] == "/favicon.png") {
+			// Also allow serving the generated favicon for a smoother loading experience.
+			if (req[1] == "/favicon.png") {
+				filepath = EditorSettings::get_singleton()->get_cache_dir().plus_file("favicon.png");
+			} else {
+				filepath = basereq + ".png";
+			}
+			ctype = "image/png";
+		} else if (req[1] == basereq + ".side.wasm") {
+			filepath = cache_path.plus_file(req[1].get_file());
+			ctype = "application/wasm";
+		} else if (req[1] == basereq + ".wasm") {
+			filepath = cache_path.plus_file(req[1].get_file());
+			ctype = "application/wasm";
+		} else if (req[1].ends_with(".wasm")) {
+			filepath = cache_path.plus_file(req[1].get_file()); // TODO dangerous?
+			ctype = "application/wasm";
+		}
+		if (filepath.is_empty() || !FileAccess::exists(filepath)) {
+			String s = "HTTP/1.1 404 Not Found\r\n";
+			s += "Connection: Close\r\n";
+			s += "\r\n";
+			CharString cs = s.utf8();
+			connection->put_data((const uint8_t *)cs.get_data(), cs.size() - 1);
+			return;
+		}
+		FileAccess *f = FileAccess::open(filepath, FileAccess::READ);
+		ERR_FAIL_COND(!f);
+		String s = "HTTP/1.1 200 OK\r\n";
+		s += "Connection: Close\r\n";
+		s += "Content-Type: " + ctype + "\r\n";
+		s += "Access-Control-Allow-Origin: *\r\n";
+		s += "Cross-Origin-Opener-Policy: same-origin\r\n";
+		s += "Cross-Origin-Embedder-Policy: require-corp\r\n";
+		s += "\r\n";
+		CharString cs = s.utf8();
+		Error err = connection->put_data((const uint8_t *)cs.get_data(), cs.size() - 1);
+		if (err != OK) {
+			memdelete(f);
+			ERR_FAIL();
+		}
+
+		while (true) {
+			uint8_t bytes[4096];
+			int read = f->get_buffer(bytes, 4096);
+			if (read < 1) {
+				break;
+			}
+			err = connection->put_data(bytes, read);
+			if (err != OK) {
+				memdelete(f);
+				ERR_FAIL();
+			}
+		}
+		memdelete(f);
+	}
+
+	void poll() {
+		if (!server->is_listening()) {
+			return;
+		}
+		if (connection.is_null()) {
+			if (!server->is_connection_available()) {
+				return;
+			}
+			connection = server->take_connection();
+			time = OS::get_singleton()->get_ticks_usec();
+		}
+		if (OS::get_singleton()->get_ticks_usec() - time > 1000000) {
+			_clear_client();
+			return;
+		}
+		if (connection->get_status() != StreamPeerTCP::STATUS_CONNECTED) {
+			return;
+		}
+
+		while (true) {
+			char *r = (char *)req_buf;
+			int l = req_pos - 1;
+			if (l > 3 && r[l] == '\n' && r[l - 1] == '\r' && r[l - 2] == '\n' && r[l - 3] == '\r') {
+				_send_response();
+				_clear_client();
+				return;
+			}
+
+			int read = 0;
+			ERR_FAIL_COND(req_pos >= 4096);
+			Error err = connection->get_partial_data(&req_buf[req_pos], 1, read);
+			if (err != OK) {
+				// Got an error
+				_clear_client();
+				return;
+			} else if (read != 1) {
+				// Busy, wait next poll
+				return;
+			}
+			req_pos += read;
+		}
+	}
+};
+
+class EditorExportPlatformJavaScript : public EditorExportPlatform {
+	GDCLASS(EditorExportPlatformJavaScript, EditorExportPlatform);
+
+	Ref<ImageTexture> logo;
+	Ref<ImageTexture> run_icon;
+	Ref<ImageTexture> stop_icon;
+	int menu_options = 0;
+
+	Ref<EditorHTTPServer> server;
+	bool server_quit = false;
+	Mutex server_lock;
+	Thread *server_thread = nullptr;
+
+	enum ExportMode {
+		EXPORT_MODE_NORMAL = 0,
+		EXPORT_MODE_THREADS = 1,
+		EXPORT_MODE_GDNATIVE = 2,
+	};
+
+	String _get_template_name(ExportMode p_mode, bool p_debug) const {
+		String name = "webassembly";
+		switch (p_mode) {
+			case EXPORT_MODE_THREADS:
+				name += "_threads";
+				break;
+			case EXPORT_MODE_GDNATIVE:
+				name += "_gdnative";
+				break;
+			default:
+				break;
+		}
+		if (p_debug) {
+			name += "_debug.zip";
+		} else {
+			name += "_release.zip";
+		}
+		return name;
+	}
+
+	void _fix_html(Vector<uint8_t> &p_html, const Ref<EditorExportPreset> &p_preset, const String &p_name, bool p_debug, int p_flags, const Vector<SharedObject> p_shared_objects);
+
+	static void _server_thread_poll(void *data);
+
+public:
+	virtual void get_preset_features(const Ref<EditorExportPreset> &p_preset, List<String> *r_features) override;
+
+	virtual void get_export_options(List<ExportOption> *r_options) override;
+
+	virtual String get_name() const override;
+	virtual String get_os_name() const override;
+	virtual Ref<Texture2D> get_logo() const override;
+
+	virtual bool can_export(const Ref<EditorExportPreset> &p_preset, String &r_error, bool &r_missing_templates) const override;
+	virtual List<String> get_binary_extensions(const Ref<EditorExportPreset> &p_preset) const override;
+	virtual Error export_project(const Ref<EditorExportPreset> &p_preset, bool p_debug, const String &p_path, int p_flags = 0) override;
+
+	virtual bool poll_export() override;
+	virtual int get_options_count() const override;
+	virtual String get_option_label(int p_index) const override { return p_index ? TTR("Stop HTTP Server") : TTR("Run in Browser"); }
+	virtual String get_option_tooltip(int p_index) const override { return p_index ? TTR("Stop HTTP Server") : TTR("Run exported HTML in the system's default browser."); }
+	virtual Ref<ImageTexture> get_option_icon(int p_index) const override;
+	virtual Error run(const Ref<EditorExportPreset> &p_preset, int p_option, int p_debug_flags) override;
+	virtual Ref<Texture2D> get_run_icon() const override;
+
+	virtual void get_platform_features(List<String> *r_features) override {
+		r_features->push_back("web");
+		r_features->push_back(get_os_name());
+	}
+
+	virtual void resolve_platform_feature_priorities(const Ref<EditorExportPreset> &p_preset, Set<String> &p_features) override {
+	}
+
+	String get_debug_protocol() const override { return "ws://"; }
+
+	EditorExportPlatformJavaScript();
+	~EditorExportPlatformJavaScript();
+};
+
+void EditorExportPlatformJavaScript::_fix_html(Vector<uint8_t> &p_html, const Ref<EditorExportPreset> &p_preset, const String &p_name, bool p_debug, int p_flags, const Vector<SharedObject> p_shared_objects) {
+	String str_template = String::utf8(reinterpret_cast<const char *>(p_html.ptr()), p_html.size());
+	String str_export;
+	Vector<String> lines = str_template.split("\n");
+	Vector<String> flags;
+	String flags_json;
+	gen_export_flags(flags, p_flags);
+	flags_json = JSON::print(flags);
+	String libs;
+	for (int i = 0; i < p_shared_objects.size(); i++) {
+		libs += "\"" + p_shared_objects[i].path.get_file() + "\",";
+	}
+
+	for (int i = 0; i < lines.size(); i++) {
+		String current_line = lines[i];
+		current_line = current_line.replace("$GODOT_BASENAME", p_name);
+		current_line = current_line.replace("$GODOT_PROJECT_NAME", ProjectSettings::get_singleton()->get_setting("application/config/name"));
+		current_line = current_line.replace("$GODOT_HEAD_INCLUDE", p_preset->get("html/head_include"));
+		current_line = current_line.replace("$GODOT_FULL_WINDOW", p_preset->get("html/full_window_size") ? "true" : "false");
+		current_line = current_line.replace("$GODOT_GDNATIVE_LIBS", libs);
+		current_line = current_line.replace("$GODOT_DEBUG_ENABLED", p_debug ? "true" : "false");
+		current_line = current_line.replace("$GODOT_ARGS", flags_json);
+		str_export += current_line + "\n";
+	}
+
+	CharString cs = str_export.utf8();
+	p_html.resize(cs.length());
+	for (int i = 0; i < cs.length(); i++) {
+		p_html.write[i] = cs[i];
+	}
+}
+
+void EditorExportPlatformJavaScript::get_preset_features(const Ref<EditorExportPreset> &p_preset, List<String> *r_features) {
+	if (p_preset->get("vram_texture_compression/for_desktop")) {
+		r_features->push_back("s3tc");
+	}
+
+	if (p_preset->get("vram_texture_compression/for_mobile")) {
+		String driver = ProjectSettings::get_singleton()->get("rendering/driver/driver_name");
+		if (driver == "GLES2") {
+			r_features->push_back("etc");
+		} else if (driver == "Vulkan") {
+			// FIXME: Review if this is correct.
+			r_features->push_back("etc2");
+		}
+	}
+	ExportMode mode = (ExportMode)(int)p_preset->get("variant/export_type");
+	if (mode == EXPORT_MODE_THREADS) {
+		r_features->push_back("threads");
+	} else if (mode == EXPORT_MODE_GDNATIVE) {
+		r_features->push_back("wasm32");
+	}
+}
+
+void EditorExportPlatformJavaScript::get_export_options(List<ExportOption> *r_options) {
+	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "custom_template/debug", PROPERTY_HINT_GLOBAL_FILE, "*.zip"), ""));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "custom_template/release", PROPERTY_HINT_GLOBAL_FILE, "*.zip"), ""));
+
+	r_options->push_back(ExportOption(PropertyInfo(Variant::INT, "variant/export_type", PROPERTY_HINT_ENUM, "Regular,Threads,GDNative"), 0)); // Export type.
+	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "vram_texture_compression/for_desktop"), true)); // S3TC
+	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "vram_texture_compression/for_mobile"), false)); // ETC or ETC2, depending on renderer
+
+	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "html/custom_html_shell", PROPERTY_HINT_FILE, "*.html"), ""));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "html/head_include", PROPERTY_HINT_MULTILINE_TEXT), ""));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "html/full_window_size"), true));
+}
+
+String EditorExportPlatformJavaScript::get_name() const {
+	return "HTML5";
+}
+
+String EditorExportPlatformJavaScript::get_os_name() const {
+	return "HTML5";
+}
+
+Ref<Texture2D> EditorExportPlatformJavaScript::get_logo() const {
+	return logo;
+}
+
+bool EditorExportPlatformJavaScript::can_export(const Ref<EditorExportPreset> &p_preset, String &r_error, bool &r_missing_templates) const {
+	String err;
+	bool valid = false;
+	ExportMode mode = (ExportMode)(int)p_preset->get("variant/export_type");
+
+	// Look for export templates (first official, and if defined custom templates).
+	bool dvalid = exists_export_template(_get_template_name(mode, true), &err);
+	bool rvalid = exists_export_template(_get_template_name(mode, false), &err);
+
+	if (p_preset->get("custom_template/debug") != "") {
+		dvalid = FileAccess::exists(p_preset->get("custom_template/debug"));
+		if (!dvalid) {
+			err += TTR("Custom debug template not found.") + "\n";
+		}
+	}
+	if (p_preset->get("custom_template/release") != "") {
+		rvalid = FileAccess::exists(p_preset->get("custom_template/release"));
+		if (!rvalid) {
+			err += TTR("Custom release template not found.") + "\n";
+		}
+	}
+
+	valid = dvalid || rvalid;
+	r_missing_templates = !valid;
+
+	// Validate the rest of the configuration.
+
+	if (p_preset->get("vram_texture_compression/for_mobile")) {
+		String etc_error = test_etc2();
+		if (etc_error != String()) {
+			valid = false;
+			err += etc_error;
+		}
+	}
+
+	if (!err.is_empty()) {
+		r_error = err;
+	}
+
+	return valid;
+}
+
+List<String> EditorExportPlatformJavaScript::get_binary_extensions(const Ref<EditorExportPreset> &p_preset) const {
+	List<String> list;
+	list.push_back("html");
+	return list;
+}
+
+Error EditorExportPlatformJavaScript::export_project(const Ref<EditorExportPreset> &p_preset, bool p_debug, const String &p_path, int p_flags) {
+	ExportNotifier notifier(*this, p_preset, p_debug, p_path, p_flags);
+
+	String custom_debug = p_preset->get("custom_template/debug");
+	String custom_release = p_preset->get("custom_template/release");
+	String custom_html = p_preset->get("html/custom_html_shell");
+
+	String template_path = p_debug ? custom_debug : custom_release;
+
+	template_path = template_path.strip_edges();
+
+	if (template_path == String()) {
+		ExportMode mode = (ExportMode)(int)p_preset->get("variant/export_type");
+		template_path = find_export_template(_get_template_name(mode, p_debug));
+	}
+
+	if (!DirAccess::exists(p_path.get_base_dir())) {
+		return ERR_FILE_BAD_PATH;
+	}
+
+	if (template_path != String() && !FileAccess::exists(template_path)) {
+		EditorNode::get_singleton()->show_warning(TTR("Template file not found:") + "\n" + template_path);
+		return ERR_FILE_NOT_FOUND;
+	}
+
+	Vector<SharedObject> shared_objects;
+	String pck_path = p_path.get_basename() + ".pck";
+	Error error = save_pack(p_preset, pck_path, &shared_objects);
+	if (error != OK) {
+		EditorNode::get_singleton()->show_warning(TTR("Could not write file:") + "\n" + pck_path);
+		return error;
+	}
+	DirAccess *da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
+	for (int i = 0; i < shared_objects.size(); i++) {
+		String dst = p_path.get_base_dir().plus_file(shared_objects[i].path.get_file());
+		error = da->copy(shared_objects[i].path, dst);
+		if (error != OK) {
+			EditorNode::get_singleton()->show_warning(TTR("Could not write file:") + "\n" + shared_objects[i].path.get_file());
+			memdelete(da);
+			return error;
+		}
+	}
+	memdelete(da);
+
+	FileAccess *src_f = nullptr;
+	zlib_filefunc_def io = zipio_create_io_from_file(&src_f);
+	unzFile pkg = unzOpen2(template_path.utf8().get_data(), &io);
+
+	if (!pkg) {
+		EditorNode::get_singleton()->show_warning(TTR("Could not open template for export:") + "\n" + template_path);
+		return ERR_FILE_NOT_FOUND;
+	}
+
+	if (unzGoToFirstFile(pkg) != UNZ_OK) {
+		EditorNode::get_singleton()->show_warning(TTR("Invalid export template:") + "\n" + template_path);
+		unzClose(pkg);
+		return ERR_FILE_CORRUPT;
+	}
+
+	do {
+		//get filename
+		unz_file_info info;
+		char fname[16384];
+		unzGetCurrentFileInfo(pkg, &info, fname, 16384, nullptr, 0, nullptr, 0);
+
+		String file = fname;
+
+		Vector<uint8_t> data;
+		data.resize(info.uncompressed_size);
+
+		//read
+		unzOpenCurrentFile(pkg);
+		unzReadCurrentFile(pkg, data.ptrw(), data.size());
+		unzCloseCurrentFile(pkg);
+
+		//write
+
+		if (file == "godot.html") {
+			if (!custom_html.is_empty()) {
+				continue;
+			}
+			_fix_html(data, p_preset, p_path.get_file().get_basename(), p_debug, p_flags, shared_objects);
+			file = p_path.get_file();
+
+		} else if (file == "godot.js") {
+			file = p_path.get_file().get_basename() + ".js";
+
+		} else if (file == "godot.worker.js") {
+			file = p_path.get_file().get_basename() + ".worker.js";
+
+		} else if (file == "godot.side.wasm") {
+			file = p_path.get_file().get_basename() + ".side.wasm";
+
+		} else if (file == "godot.audio.worklet.js") {
+			file = p_path.get_file().get_basename() + ".audio.worklet.js";
+
+		} else if (file == "godot.wasm") {
+			file = p_path.get_file().get_basename() + ".wasm";
+		}
+
+		String dst = p_path.get_base_dir().plus_file(file);
+		FileAccess *f = FileAccess::open(dst, FileAccess::WRITE);
+		if (!f) {
+			EditorNode::get_singleton()->show_warning(TTR("Could not write file:") + "\n" + dst);
+			unzClose(pkg);
+			return ERR_FILE_CANT_WRITE;
+		}
+		f->store_buffer(data.ptr(), data.size());
+		memdelete(f);
+
+	} while (unzGoToNextFile(pkg) == UNZ_OK);
+	unzClose(pkg);
+
+	if (!custom_html.is_empty()) {
+		FileAccess *f = FileAccess::open(custom_html, FileAccess::READ);
+		if (!f) {
+			EditorNode::get_singleton()->show_warning(TTR("Could not read custom HTML shell:") + "\n" + custom_html);
+			return ERR_FILE_CANT_READ;
+		}
+		Vector<uint8_t> buf;
+		buf.resize(f->get_len());
+		f->get_buffer(buf.ptrw(), buf.size());
+		memdelete(f);
+		_fix_html(buf, p_preset, p_path.get_file().get_basename(), p_debug, p_flags, shared_objects);
+
+		f = FileAccess::open(p_path, FileAccess::WRITE);
+		if (!f) {
+			EditorNode::get_singleton()->show_warning(TTR("Could not write file:") + "\n" + p_path);
+			return ERR_FILE_CANT_WRITE;
+		}
+		f->store_buffer(buf.ptr(), buf.size());
+		memdelete(f);
+	}
+
+	Ref<Image> splash;
+	const String splash_path = String(GLOBAL_GET("application/boot_splash/image")).strip_edges();
+	if (!splash_path.is_empty()) {
+		splash.instance();
+		const Error err = splash->load(splash_path);
+		if (err) {
+			EditorNode::get_singleton()->show_warning(TTR("Could not read boot splash image file:") + "\n" + splash_path + "\n" + TTR("Using default boot splash image."));
+			splash.unref();
+		}
+	}
+	if (splash.is_null()) {
+		splash = Ref<Image>(memnew(Image(boot_splash_png)));
+	}
+	const String splash_png_path = p_path.get_base_dir().plus_file(p_path.get_file().get_basename() + ".png");
+	if (splash->save_png(splash_png_path) != OK) {
+		EditorNode::get_singleton()->show_warning(TTR("Could not write file:") + "\n" + splash_png_path);
+		return ERR_FILE_CANT_WRITE;
+	}
+
+	// Save a favicon that can be accessed without waiting for the project to finish loading.
+	// This way, the favicon can be displayed immediately when loading the page.
+	Ref<Image> favicon;
+	const String favicon_path = String(GLOBAL_GET("application/config/icon")).strip_edges();
+	if (!favicon_path.is_empty()) {
+		favicon.instance();
+		const Error err = favicon->load(favicon_path);
+		if (err) {
+			favicon.unref();
+		}
+	}
+
+	if (favicon.is_valid()) {
+		const String favicon_png_path = p_path.get_base_dir().plus_file("favicon.png");
+		if (favicon->save_png(favicon_png_path) != OK) {
+			EditorNode::get_singleton()->show_warning(TTR("Could not write file:") + "\n" + favicon_png_path);
+			return ERR_FILE_CANT_WRITE;
+		}
+	}
+
+	return OK;
+}
+
+bool EditorExportPlatformJavaScript::poll_export() {
+	Ref<EditorExportPreset> preset;
+
+	for (int i = 0; i < EditorExport::get_singleton()->get_export_preset_count(); i++) {
+		Ref<EditorExportPreset> ep = EditorExport::get_singleton()->get_export_preset(i);
+		if (ep->is_runnable() && ep->get_platform() == this) {
+			preset = ep;
+			break;
+		}
+	}
+
+	int prev = menu_options;
+	menu_options = preset.is_valid();
+	if (server->is_listening()) {
+		if (menu_options == 0) {
+			MutexLock lock(server_lock);
+			server->stop();
+		} else {
+			menu_options += 1;
+		}
+	}
+	return menu_options != prev;
+}
+
+Ref<ImageTexture> EditorExportPlatformJavaScript::get_option_icon(int p_index) const {
+	return p_index == 1 ? stop_icon : EditorExportPlatform::get_option_icon(p_index);
+}
+
+int EditorExportPlatformJavaScript::get_options_count() const {
+	return menu_options;
+}
+
+Error EditorExportPlatformJavaScript::run(const Ref<EditorExportPreset> &p_preset, int p_option, int p_debug_flags) {
+	if (p_option == 1) {
+		MutexLock lock(server_lock);
+		server->stop();
+		return OK;
+	}
+
+	const String basepath = EditorSettings::get_singleton()->get_cache_dir().plus_file("tmp_js_export");
+	Error err = export_project(p_preset, true, basepath + ".html", p_debug_flags);
+	if (err != OK) {
+		// Export generates several files, clean them up on failure.
+		DirAccess::remove_file_or_error(basepath + ".html");
+		DirAccess::remove_file_or_error(basepath + ".js");
+		DirAccess::remove_file_or_error(basepath + ".worker.js");
+		DirAccess::remove_file_or_error(basepath + ".audio.worklet.js");
+		DirAccess::remove_file_or_error(basepath + ".pck");
+		DirAccess::remove_file_or_error(basepath + ".png");
+		DirAccess::remove_file_or_error(basepath + ".side.wasm");
+		DirAccess::remove_file_or_error(basepath + ".wasm");
+		DirAccess::remove_file_or_error(EditorSettings::get_singleton()->get_cache_dir().plus_file("favicon.png"));
+		return err;
+	}
+
+	const uint16_t bind_port = EDITOR_GET("export/web/http_port");
+	// Resolve host if needed.
+	const String bind_host = EDITOR_GET("export/web/http_host");
+	IP_Address bind_ip;
+	if (bind_host.is_valid_ip_address()) {
+		bind_ip = bind_host;
+	} else {
+		bind_ip = IP::get_singleton()->resolve_hostname(bind_host);
+	}
+	ERR_FAIL_COND_V_MSG(!bind_ip.is_valid(), ERR_INVALID_PARAMETER, "Invalid editor setting 'export/web/http_host': '" + bind_host + "'. Try using '127.0.0.1'.");
+
+	// Restart server.
+	{
+		MutexLock lock(server_lock);
+
+		server->stop();
+		err = server->listen(bind_port, bind_ip);
+	}
+	ERR_FAIL_COND_V_MSG(err != OK, err, "Unable to start HTTP server.");
+
+	OS::get_singleton()->shell_open(String("http://" + bind_host + ":" + itos(bind_port) + "/tmp_js_export.html"));
+	// FIXME: Find out how to clean up export files after running the successfully
+	// exported game. Might not be trivial.
+	return OK;
+}
+
+Ref<Texture2D> EditorExportPlatformJavaScript::get_run_icon() const {
+	return run_icon;
+}
+
+void EditorExportPlatformJavaScript::_server_thread_poll(void *data) {
+	EditorExportPlatformJavaScript *ej = (EditorExportPlatformJavaScript *)data;
+	while (!ej->server_quit) {
+		OS::get_singleton()->delay_usec(1000);
+		{
+			MutexLock lock(ej->server_lock);
+			ej->server->poll();
+		}
+	}
+}
+
+EditorExportPlatformJavaScript::EditorExportPlatformJavaScript() {
+	server.instance();
+	server_thread = Thread::create(_server_thread_poll, this);
+
+	Ref<Image> img = memnew(Image(_javascript_logo));
+	logo.instance();
+	logo->create_from_image(img);
+
+	img = Ref<Image>(memnew(Image(_javascript_run_icon)));
+	run_icon.instance();
+	run_icon->create_from_image(img);
+
+	Ref<Theme> theme = EditorNode::get_singleton()->get_editor_theme();
+	if (theme.is_valid()) {
+		stop_icon = theme->get_icon("Stop", "EditorIcons");
+	} else {
+		stop_icon.instance();
+	}
+}
+
+EditorExportPlatformJavaScript::~EditorExportPlatformJavaScript() {
+	server->stop();
+	server_quit = true;
+	Thread::wait_to_finish(server_thread);
+	memdelete(server_thread);
+}
+
+*/
 void register_javascript_exporter() {
 	EDITOR_DEF("export/web/http_host", "localhost");
 	EDITOR_DEF("export/web/http_port", 8060);