Merge pull request #65276 from aaronfranke/shader

Separate TextShaderEditor and ShaderEditorPlugin into different files

5 files changed, 1402 insertions, 1338 deletions

diff --git a/editor/plugins/script_editor_plugin.cpp b/editor/plugins/script_editor_plugin.cpp
index d259d4ba2b..4dcd0573e6 100644
--- a/editor/plugins/script_editor_plugin.cpp
+++ b/editor/plugins/script_editor_plugin.cpp
@@ -49,6 +49,7 @@
 #include "editor/find_in_files.h"
 #include "editor/node_dock.h"
 #include "editor/plugins/shader_editor_plugin.h"
+#include "editor/plugins/text_shader_editor.h"
 #include "scene/main/window.h"
 #include "scene/scene_string_names.h"
 #include "script_text_editor.h"
diff --git a/editor/plugins/shader_editor_plugin.cpp b/editor/plugins/shader_editor_plugin.cpp
index ee3f43009f..de1a807721 100644
--- a/editor/plugins/shader_editor_plugin.cpp
+++ b/editor/plugins/shader_editor_plugin.cpp
@@ -30,1172 +30,12 @@
 
 #include "shader_editor_plugin.h"
 
-#include "core/io/resource_loader.h"
-#include "core/io/resource_saver.h"
-#include "core/os/keyboard.h"
-#include "core/os/os.h"
-#include "core/version_generated.gen.h"
 #include "editor/editor_node.h"
 #include "editor/editor_scale.h"
-#include "editor/editor_settings.h"
 #include "editor/filesystem_dock.h"
+#include "editor/plugins/text_shader_editor.h"
 #include "editor/plugins/visual_shader_editor_plugin.h"
-#include "editor/project_settings_editor.h"
 #include "editor/shader_create_dialog.h"
-#include "scene/gui/split_container.h"
-#include "servers/display_server.h"
-#include "servers/rendering/shader_preprocessor.h"
-#include "servers/rendering/shader_types.h"
-
-/*** SHADER SYNTAX HIGHLIGHTER ****/
-
-Dictionary GDShaderSyntaxHighlighter::_get_line_syntax_highlighting_impl(int p_line) {
-	Dictionary color_map;
-
-	for (const Point2i &region : disabled_branch_regions) {
-		if (p_line >= region.x && p_line <= region.y) {
-			Dictionary highlighter_info;
-			highlighter_info["color"] = disabled_branch_color;
-
-			color_map[0] = highlighter_info;
-			return color_map;
-		}
-	}
-
-	return CodeHighlighter::_get_line_syntax_highlighting_impl(p_line);
-}
-
-void GDShaderSyntaxHighlighter::add_disabled_branch_region(const Point2i &p_region) {
-	ERR_FAIL_COND(p_region.x < 0);
-	ERR_FAIL_COND(p_region.y < 0);
-
-	for (int i = 0; i < disabled_branch_regions.size(); i++) {
-		ERR_FAIL_COND_MSG(disabled_branch_regions[i].x == p_region.x, "Branch region with a start line '" + itos(p_region.x) + "' already exists.");
-	}
-
-	Point2i disabled_branch_region;
-	disabled_branch_region.x = p_region.x;
-	disabled_branch_region.y = p_region.y;
-	disabled_branch_regions.push_back(disabled_branch_region);
-
-	clear_highlighting_cache();
-}
-
-void GDShaderSyntaxHighlighter::clear_disabled_branch_regions() {
-	disabled_branch_regions.clear();
-	clear_highlighting_cache();
-}
-
-void GDShaderSyntaxHighlighter::set_disabled_branch_color(const Color &p_color) {
-	disabled_branch_color = p_color;
-	clear_highlighting_cache();
-}
-
-/*** SHADER SCRIPT EDITOR ****/
-
-static bool saved_warnings_enabled = false;
-static bool saved_treat_warning_as_errors = false;
-static HashMap<ShaderWarning::Code, bool> saved_warnings;
-static uint32_t saved_warning_flags = 0U;
-
-void ShaderTextEditor::_notification(int p_what) {
-	switch (p_what) {
-		case NOTIFICATION_THEME_CHANGED: {
-			if (is_visible_in_tree()) {
-				_load_theme_settings();
-				if (warnings.size() > 0 && last_compile_result == OK) {
-					warnings_panel->clear();
-					_update_warning_panel();
-				}
-			}
-		} break;
-	}
-}
-
-Ref<Shader> ShaderTextEditor::get_edited_shader() const {
-	return shader;
-}
-
-Ref<ShaderInclude> ShaderTextEditor::get_edited_shader_include() const {
-	return shader_inc;
-}
-
-void ShaderTextEditor::set_edited_shader(const Ref<Shader> &p_shader) {
-	set_edited_shader(p_shader, p_shader->get_code());
-}
-
-void ShaderTextEditor::set_edited_shader(const Ref<Shader> &p_shader, const String &p_code) {
-	if (shader == p_shader) {
-		return;
-	}
-	if (shader.is_valid()) {
-		shader->disconnect(SNAME("changed"), callable_mp(this, &ShaderTextEditor::_shader_changed));
-	}
-	shader = p_shader;
-	shader_inc = Ref<ShaderInclude>();
-
-	set_edited_code(p_code);
-
-	if (shader.is_valid()) {
-		shader->connect(SNAME("changed"), callable_mp(this, &ShaderTextEditor::_shader_changed));
-	}
-}
-
-void ShaderTextEditor::set_edited_shader_include(const Ref<ShaderInclude> &p_shader_inc) {
-	set_edited_shader_include(p_shader_inc, p_shader_inc->get_code());
-}
-
-void ShaderTextEditor::_shader_changed() {
-	// This function is used for dependencies (include changing changes main shader and forces it to revalidate)
-	if (block_shader_changed) {
-		return;
-	}
-	dependencies_version++;
-	_validate_script();
-}
-
-void ShaderTextEditor::set_edited_shader_include(const Ref<ShaderInclude> &p_shader_inc, const String &p_code) {
-	if (shader_inc == p_shader_inc) {
-		return;
-	}
-	if (shader_inc.is_valid()) {
-		shader_inc->disconnect(SNAME("changed"), callable_mp(this, &ShaderTextEditor::_shader_changed));
-	}
-	shader_inc = p_shader_inc;
-	shader = Ref<Shader>();
-
-	set_edited_code(p_code);
-
-	if (shader_inc.is_valid()) {
-		shader_inc->connect(SNAME("changed"), callable_mp(this, &ShaderTextEditor::_shader_changed));
-	}
-}
-
-void ShaderTextEditor::set_edited_code(const String &p_code) {
-	_load_theme_settings();
-
-	get_text_editor()->set_text(p_code);
-	get_text_editor()->clear_undo_history();
-	get_text_editor()->call_deferred(SNAME("set_h_scroll"), 0);
-	get_text_editor()->call_deferred(SNAME("set_v_scroll"), 0);
-	get_text_editor()->tag_saved_version();
-
-	_validate_script();
-	_line_col_changed();
-}
-
-void ShaderTextEditor::reload_text() {
-	ERR_FAIL_COND(shader.is_null());
-
-	CodeEdit *te = get_text_editor();
-	int column = te->get_caret_column();
-	int row = te->get_caret_line();
-	int h = te->get_h_scroll();
-	int v = te->get_v_scroll();
-
-	te->set_text(shader->get_code());
-	te->set_caret_line(row);
-	te->set_caret_column(column);
-	te->set_h_scroll(h);
-	te->set_v_scroll(v);
-
-	te->tag_saved_version();
-
-	update_line_and_column();
-}
-
-void ShaderTextEditor::set_warnings_panel(RichTextLabel *p_warnings_panel) {
-	warnings_panel = p_warnings_panel;
-}
-
-void ShaderTextEditor::_load_theme_settings() {
-	CodeEdit *text_editor = get_text_editor();
-	Color updated_marked_line_color = EDITOR_GET("text_editor/theme/highlighting/mark_color");
-	if (updated_marked_line_color != marked_line_color) {
-		for (int i = 0; i < text_editor->get_line_count(); i++) {
-			if (text_editor->get_line_background_color(i) == marked_line_color) {
-				text_editor->set_line_background_color(i, updated_marked_line_color);
-			}
-		}
-		marked_line_color = updated_marked_line_color;
-	}
-
-	syntax_highlighter->set_number_color(EDITOR_GET("text_editor/theme/highlighting/number_color"));
-	syntax_highlighter->set_symbol_color(EDITOR_GET("text_editor/theme/highlighting/symbol_color"));
-	syntax_highlighter->set_function_color(EDITOR_GET("text_editor/theme/highlighting/function_color"));
-	syntax_highlighter->set_member_variable_color(EDITOR_GET("text_editor/theme/highlighting/member_variable_color"));
-
-	syntax_highlighter->clear_keyword_colors();
-
-	const Color keyword_color = EDITOR_GET("text_editor/theme/highlighting/keyword_color");
-	const Color control_flow_keyword_color = EDITOR_GET("text_editor/theme/highlighting/control_flow_keyword_color");
-
-	List<String> keywords;
-	ShaderLanguage::get_keyword_list(&keywords);
-
-	for (const String &E : keywords) {
-		if (ShaderLanguage::is_control_flow_keyword(E)) {
-			syntax_highlighter->add_keyword_color(E, control_flow_keyword_color);
-		} else {
-			syntax_highlighter->add_keyword_color(E, keyword_color);
-		}
-	}
-
-	List<String> pp_keywords;
-	ShaderPreprocessor::get_keyword_list(&pp_keywords, false);
-
-	for (const String &E : pp_keywords) {
-		syntax_highlighter->add_keyword_color(E, keyword_color);
-	}
-
-	// Colorize built-ins like `COLOR` differently to make them easier
-	// to distinguish from keywords at a quick glance.
-
-	List<String> built_ins;
-
-	if (shader_inc.is_valid()) {
-		for (int i = 0; i < RenderingServer::SHADER_MAX; i++) {
-			for (const KeyValue<StringName, ShaderLanguage::FunctionInfo> &E : ShaderTypes::get_singleton()->get_functions(RenderingServer::ShaderMode(i))) {
-				for (const KeyValue<StringName, ShaderLanguage::BuiltInInfo> &F : E.value.built_ins) {
-					built_ins.push_back(F.key);
-				}
-			}
-
-			const Vector<ShaderLanguage::ModeInfo> &modes = ShaderTypes::get_singleton()->get_modes(RenderingServer::ShaderMode(i));
-
-			for (int j = 0; j < modes.size(); j++) {
-				const ShaderLanguage::ModeInfo &info = modes[j];
-
-				if (!info.options.is_empty()) {
-					for (int k = 0; k < info.options.size(); k++) {
-						built_ins.push_back(String(info.name) + "_" + String(info.options[k]));
-					}
-				} else {
-					built_ins.push_back(String(info.name));
-				}
-			}
-		}
-	} else if (shader.is_valid()) {
-		for (const KeyValue<StringName, ShaderLanguage::FunctionInfo> &E : ShaderTypes::get_singleton()->get_functions(RenderingServer::ShaderMode(shader->get_mode()))) {
-			for (const KeyValue<StringName, ShaderLanguage::BuiltInInfo> &F : E.value.built_ins) {
-				built_ins.push_back(F.key);
-			}
-		}
-
-		const Vector<ShaderLanguage::ModeInfo> &modes = ShaderTypes::get_singleton()->get_modes(RenderingServer::ShaderMode(shader->get_mode()));
-
-		for (int i = 0; i < modes.size(); i++) {
-			const ShaderLanguage::ModeInfo &info = modes[i];
-
-			if (!info.options.is_empty()) {
-				for (int j = 0; j < info.options.size(); j++) {
-					built_ins.push_back(String(info.name) + "_" + String(info.options[j]));
-				}
-			} else {
-				built_ins.push_back(String(info.name));
-			}
-		}
-	}
-
-	const Color user_type_color = EDITOR_GET("text_editor/theme/highlighting/user_type_color");
-
-	for (const String &E : built_ins) {
-		syntax_highlighter->add_keyword_color(E, user_type_color);
-	}
-
-	// Colorize comments.
-	const Color comment_color = EDITOR_GET("text_editor/theme/highlighting/comment_color");
-	syntax_highlighter->clear_color_regions();
-	syntax_highlighter->add_color_region("/*", "*/", comment_color, false);
-	syntax_highlighter->add_color_region("//", "", comment_color, true);
-	syntax_highlighter->set_disabled_branch_color(comment_color);
-
-	text_editor->clear_comment_delimiters();
-	text_editor->add_comment_delimiter("/*", "*/", false);
-	text_editor->add_comment_delimiter("//", "", true);
-
-	if (!text_editor->has_auto_brace_completion_open_key("/*")) {
-		text_editor->add_auto_brace_completion_pair("/*", "*/");
-	}
-
-	// Colorize preprocessor include strings.
-	const Color string_color = EDITOR_GET("text_editor/theme/highlighting/string_color");
-	syntax_highlighter->add_color_region("\"", "\"", string_color, false);
-
-	if (warnings_panel) {
-		// Warnings panel.
-		warnings_panel->add_theme_font_override("normal_font", EditorNode::get_singleton()->get_gui_base()->get_theme_font(SNAME("main"), SNAME("EditorFonts")));
-		warnings_panel->add_theme_font_size_override("normal_font_size", EditorNode::get_singleton()->get_gui_base()->get_theme_font_size(SNAME("main_size"), SNAME("EditorFonts")));
-	}
-}
-
-void ShaderTextEditor::_check_shader_mode() {
-	String type = ShaderLanguage::get_shader_type(get_text_editor()->get_text());
-
-	Shader::Mode mode;
-
-	if (type == "canvas_item") {
-		mode = Shader::MODE_CANVAS_ITEM;
-	} else if (type == "particles") {
-		mode = Shader::MODE_PARTICLES;
-	} else if (type == "sky") {
-		mode = Shader::MODE_SKY;
-	} else if (type == "fog") {
-		mode = Shader::MODE_FOG;
-	} else {
-		mode = Shader::MODE_SPATIAL;
-	}
-
-	if (shader->get_mode() != mode) {
-		set_block_shader_changed(true);
-		shader->set_code(get_text_editor()->get_text());
-		set_block_shader_changed(false);
-		_load_theme_settings();
-	}
-}
-
-static ShaderLanguage::DataType _get_global_shader_uniform_type(const StringName &p_variable) {
-	RS::GlobalShaderParameterType gvt = RS::get_singleton()->global_shader_parameter_get_type(p_variable);
-	return (ShaderLanguage::DataType)RS::global_shader_uniform_type_get_shader_datatype(gvt);
-}
-
-static String complete_from_path;
-
-static void _complete_include_paths_search(EditorFileSystemDirectory *p_efsd, List<ScriptLanguage::CodeCompletionOption> *r_options) {
-	if (!p_efsd) {
-		return;
-	}
-	for (int i = 0; i < p_efsd->get_file_count(); i++) {
-		if (p_efsd->get_file_type(i) == SNAME("ShaderInclude")) {
-			String path = p_efsd->get_file_path(i);
-			if (path.begins_with(complete_from_path)) {
-				path = path.replace_first(complete_from_path, "");
-			}
-			r_options->push_back(ScriptLanguage::CodeCompletionOption(path, ScriptLanguage::CODE_COMPLETION_KIND_FILE_PATH));
-		}
-	}
-	for (int j = 0; j < p_efsd->get_subdir_count(); j++) {
-		_complete_include_paths_search(p_efsd->get_subdir(j), r_options);
-	}
-}
-
-static void _complete_include_paths(List<ScriptLanguage::CodeCompletionOption> *r_options) {
-	_complete_include_paths_search(EditorFileSystem::get_singleton()->get_filesystem(), r_options);
-}
-
-void ShaderTextEditor::_code_complete_script(const String &p_code, List<ScriptLanguage::CodeCompletionOption> *r_options) {
-	List<ScriptLanguage::CodeCompletionOption> pp_options;
-	List<ScriptLanguage::CodeCompletionOption> pp_defines;
-	ShaderPreprocessor preprocessor;
-	String code;
-	complete_from_path = (shader.is_valid() ? shader->get_path() : shader_inc->get_path()).get_base_dir();
-	if (!complete_from_path.ends_with("/")) {
-		complete_from_path += "/";
-	}
-	preprocessor.preprocess(p_code, "", code, nullptr, nullptr, nullptr, nullptr, &pp_options, &pp_defines, _complete_include_paths);
-	complete_from_path = String();
-	if (pp_options.size()) {
-		for (const ScriptLanguage::CodeCompletionOption &E : pp_options) {
-			r_options->push_back(E);
-		}
-		return;
-	}
-	for (const ScriptLanguage::CodeCompletionOption &E : pp_defines) {
-		r_options->push_back(E);
-	}
-
-	ShaderLanguage sl;
-	String calltip;
-	ShaderLanguage::ShaderCompileInfo info;
-	info.global_shader_uniform_type_func = _get_global_shader_uniform_type;
-
-	if (shader.is_null()) {
-		info.is_include = true;
-
-		sl.complete(code, info, r_options, calltip);
-		get_text_editor()->set_code_hint(calltip);
-		return;
-	}
-	_check_shader_mode();
-	info.functions = ShaderTypes::get_singleton()->get_functions(RenderingServer::ShaderMode(shader->get_mode()));
-	info.render_modes = ShaderTypes::get_singleton()->get_modes(RenderingServer::ShaderMode(shader->get_mode()));
-	info.shader_types = ShaderTypes::get_singleton()->get_types();
-
-	sl.complete(code, info, r_options, calltip);
-	get_text_editor()->set_code_hint(calltip);
-}
-
-void ShaderTextEditor::_validate_script() {
-	emit_signal(SNAME("script_changed")); // Ensure to notify that it changed, so it is applied
-
-	String code;
-
-	if (shader.is_valid()) {
-		_check_shader_mode();
-		code = shader->get_code();
-	} else {
-		code = shader_inc->get_code();
-	}
-
-	ShaderPreprocessor preprocessor;
-	String code_pp;
-	String error_pp;
-	List<ShaderPreprocessor::FilePosition> err_positions;
-	List<ShaderPreprocessor::Region> regions;
-	String filename;
-	if (shader.is_valid()) {
-		filename = shader->get_path();
-	} else if (shader_inc.is_valid()) {
-		filename = shader_inc->get_path();
-	}
-	last_compile_result = preprocessor.preprocess(code, filename, code_pp, &error_pp, &err_positions, &regions);
-
-	for (int i = 0; i < get_text_editor()->get_line_count(); i++) {
-		get_text_editor()->set_line_background_color(i, Color(0, 0, 0, 0));
-	}
-
-	syntax_highlighter->clear_disabled_branch_regions();
-	for (const ShaderPreprocessor::Region &region : regions) {
-		if (!region.enabled) {
-			if (filename != region.file) {
-				continue;
-			}
-			syntax_highlighter->add_disabled_branch_region(Point2i(region.from_line, region.to_line));
-		}
-	}
-
-	set_error("");
-	set_error_count(0);
-
-	if (last_compile_result != OK) {
-		//preprocessor error
-		ERR_FAIL_COND(err_positions.size() == 0);
-
-		String error_text = error_pp;
-		int error_line = err_positions.front()->get().line;
-		if (err_positions.size() == 1) {
-			// Error in main file
-			error_text = "error(" + itos(error_line) + "): " + error_text;
-		} else {
-			error_text = "error(" + itos(error_line) + ") in include " + err_positions.back()->get().file.get_file() + ":" + itos(err_positions.back()->get().line) + ": " + error_text;
-			set_error_count(err_positions.size() - 1);
-		}
-
-		set_error(error_text);
-		set_error_pos(error_line - 1, 0);
-		for (int i = 0; i < get_text_editor()->get_line_count(); i++) {
-			get_text_editor()->set_line_background_color(i, Color(0, 0, 0, 0));
-		}
-		get_text_editor()->set_line_background_color(error_line - 1, marked_line_color);
-
-		set_warning_count(0);
-
-	} else {
-		ShaderLanguage sl;
-
-		sl.enable_warning_checking(saved_warnings_enabled);
-		uint32_t flags = saved_warning_flags;
-		if (shader.is_null()) {
-			if (flags & ShaderWarning::UNUSED_CONSTANT) {
-				flags &= ~(ShaderWarning::UNUSED_CONSTANT);
-			}
-			if (flags & ShaderWarning::UNUSED_FUNCTION) {
-				flags &= ~(ShaderWarning::UNUSED_FUNCTION);
-			}
-			if (flags & ShaderWarning::UNUSED_STRUCT) {
-				flags &= ~(ShaderWarning::UNUSED_STRUCT);
-			}
-			if (flags & ShaderWarning::UNUSED_UNIFORM) {
-				flags &= ~(ShaderWarning::UNUSED_UNIFORM);
-			}
-			if (flags & ShaderWarning::UNUSED_VARYING) {
-				flags &= ~(ShaderWarning::UNUSED_VARYING);
-			}
-		}
-		sl.set_warning_flags(flags);
-
-		ShaderLanguage::ShaderCompileInfo info;
-		info.global_shader_uniform_type_func = _get_global_shader_uniform_type;
-
-		if (shader.is_null()) {
-			info.is_include = true;
-		} else {
-			Shader::Mode mode = shader->get_mode();
-			info.functions = ShaderTypes::get_singleton()->get_functions(RenderingServer::ShaderMode(mode));
-			info.render_modes = ShaderTypes::get_singleton()->get_modes(RenderingServer::ShaderMode(mode));
-			info.shader_types = ShaderTypes::get_singleton()->get_types();
-		}
-
-		code = code_pp;
-		//compiler error
-		last_compile_result = sl.compile(code, info);
-
-		if (last_compile_result != OK) {
-			String error_text;
-			int error_line;
-			Vector<ShaderLanguage::FilePosition> include_positions = sl.get_include_positions();
-			if (include_positions.size() > 1) {
-				//error is in an include
-				error_line = include_positions[0].line;
-				error_text = "error(" + itos(error_line) + ") in include " + include_positions[include_positions.size() - 1].file + ":" + itos(include_positions[include_positions.size() - 1].line) + ": " + sl.get_error_text();
-				set_error_count(include_positions.size() - 1);
-			} else {
-				error_line = sl.get_error_line();
-				error_text = "error(" + itos(error_line) + "): " + sl.get_error_text();
-				set_error_count(0);
-			}
-			set_error(error_text);
-			set_error_pos(error_line - 1, 0);
-			get_text_editor()->set_line_background_color(error_line - 1, marked_line_color);
-		} else {
-			set_error("");
-		}
-
-		if (warnings.size() > 0 || last_compile_result != OK) {
-			warnings_panel->clear();
-		}
-		warnings.clear();
-		for (List<ShaderWarning>::Element *E = sl.get_warnings_ptr(); E; E = E->next()) {
-			warnings.push_back(E->get());
-		}
-		if (warnings.size() > 0 && last_compile_result == OK) {
-			warnings.sort_custom<WarningsComparator>();
-			_update_warning_panel();
-		} else {
-			set_warning_count(0);
-		}
-	}
-
-	emit_signal(SNAME("script_validated"), last_compile_result == OK); // Notify that validation finished, to update the list of scripts
-}
-
-void ShaderTextEditor::_update_warning_panel() {
-	int warning_count = 0;
-
-	warnings_panel->push_table(2);
-	for (int i = 0; i < warnings.size(); i++) {
-		ShaderWarning &w = warnings[i];
-
-		if (warning_count == 0) {
-			if (saved_treat_warning_as_errors) {
-				String error_text = "error(" + itos(w.get_line()) + "): " + w.get_message() + " " + TTR("Warnings should be fixed to prevent errors.");
-				set_error_pos(w.get_line() - 1, 0);
-				set_error(error_text);
-				get_text_editor()->set_line_background_color(w.get_line() - 1, marked_line_color);
-			}
-		}
-
-		warning_count++;
-		int line = w.get_line();
-
-		// First cell.
-		warnings_panel->push_cell();
-		warnings_panel->push_color(warnings_panel->get_theme_color(SNAME("warning_color"), SNAME("Editor")));
-		if (line != -1) {
-			warnings_panel->push_meta(line - 1);
-			warnings_panel->add_text(TTR("Line") + " " + itos(line));
-			warnings_panel->add_text(" (" + w.get_name() + "):");
-			warnings_panel->pop(); // Meta goto.
-		} else {
-			warnings_panel->add_text(w.get_name() + ":");
-		}
-		warnings_panel->pop(); // Color.
-		warnings_panel->pop(); // Cell.
-
-		// Second cell.
-		warnings_panel->push_cell();
-		warnings_panel->add_text(w.get_message());
-		warnings_panel->pop(); // Cell.
-	}
-	warnings_panel->pop(); // Table.
-
-	set_warning_count(warning_count);
-}
-
-void ShaderTextEditor::_bind_methods() {
-	ADD_SIGNAL(MethodInfo("script_validated", PropertyInfo(Variant::BOOL, "valid")));
-}
-
-ShaderTextEditor::ShaderTextEditor() {
-	syntax_highlighter.instantiate();
-	get_text_editor()->set_syntax_highlighter(syntax_highlighter);
-}
-
-/*** SCRIPT EDITOR ******/
-
-void ShaderEditor::_menu_option(int p_option) {
-	switch (p_option) {
-		case EDIT_UNDO: {
-			shader_editor->get_text_editor()->undo();
-		} break;
-		case EDIT_REDO: {
-			shader_editor->get_text_editor()->redo();
-		} break;
-		case EDIT_CUT: {
-			shader_editor->get_text_editor()->cut();
-		} break;
-		case EDIT_COPY: {
-			shader_editor->get_text_editor()->copy();
-		} break;
-		case EDIT_PASTE: {
-			shader_editor->get_text_editor()->paste();
-		} break;
-		case EDIT_SELECT_ALL: {
-			shader_editor->get_text_editor()->select_all();
-		} break;
-		case EDIT_MOVE_LINE_UP: {
-			shader_editor->move_lines_up();
-		} break;
-		case EDIT_MOVE_LINE_DOWN: {
-			shader_editor->move_lines_down();
-		} break;
-		case EDIT_INDENT: {
-			if (shader.is_null()) {
-				return;
-			}
-			shader_editor->get_text_editor()->indent_lines();
-		} break;
-		case EDIT_UNINDENT: {
-			if (shader.is_null()) {
-				return;
-			}
-			shader_editor->get_text_editor()->unindent_lines();
-		} break;
-		case EDIT_DELETE_LINE: {
-			shader_editor->delete_lines();
-		} break;
-		case EDIT_DUPLICATE_SELECTION: {
-			shader_editor->duplicate_selection();
-		} break;
-		case EDIT_TOGGLE_COMMENT: {
-			if (shader.is_null()) {
-				return;
-			}
-
-			shader_editor->toggle_inline_comment("//");
-
-		} break;
-		case EDIT_COMPLETE: {
-			shader_editor->get_text_editor()->request_code_completion();
-		} break;
-		case SEARCH_FIND: {
-			shader_editor->get_find_replace_bar()->popup_search();
-		} break;
-		case SEARCH_FIND_NEXT: {
-			shader_editor->get_find_replace_bar()->search_next();
-		} break;
-		case SEARCH_FIND_PREV: {
-			shader_editor->get_find_replace_bar()->search_prev();
-		} break;
-		case SEARCH_REPLACE: {
-			shader_editor->get_find_replace_bar()->popup_replace();
-		} break;
-		case SEARCH_GOTO_LINE: {
-			goto_line_dialog->popup_find_line(shader_editor->get_text_editor());
-		} break;
-		case BOOKMARK_TOGGLE: {
-			shader_editor->toggle_bookmark();
-		} break;
-		case BOOKMARK_GOTO_NEXT: {
-			shader_editor->goto_next_bookmark();
-		} break;
-		case BOOKMARK_GOTO_PREV: {
-			shader_editor->goto_prev_bookmark();
-		} break;
-		case BOOKMARK_REMOVE_ALL: {
-			shader_editor->remove_all_bookmarks();
-		} break;
-		case HELP_DOCS: {
-			OS::get_singleton()->shell_open(vformat("%s/tutorials/shaders/shader_reference/index.html", VERSION_DOCS_URL));
-		} break;
-	}
-	if (p_option != SEARCH_FIND && p_option != SEARCH_REPLACE && p_option != SEARCH_GOTO_LINE) {
-		shader_editor->get_text_editor()->call_deferred(SNAME("grab_focus"));
-	}
-}
-
-void ShaderEditor::_notification(int p_what) {
-	switch (p_what) {
-		case NOTIFICATION_ENTER_TREE:
-		case NOTIFICATION_THEME_CHANGED: {
-			PopupMenu *popup = help_menu->get_popup();
-			popup->set_item_icon(popup->get_item_index(HELP_DOCS), get_theme_icon(SNAME("ExternalLink"), SNAME("EditorIcons")));
-		} break;
-
-		case NOTIFICATION_WM_WINDOW_FOCUS_IN: {
-			_check_for_external_edit();
-		} break;
-	}
-}
-
-void ShaderEditor::_editor_settings_changed() {
-	shader_editor->update_editor_settings();
-
-	shader_editor->get_text_editor()->add_theme_constant_override("line_spacing", EditorSettings::get_singleton()->get("text_editor/appearance/whitespace/line_spacing"));
-	shader_editor->get_text_editor()->set_draw_breakpoints_gutter(false);
-	shader_editor->get_text_editor()->set_draw_executing_lines_gutter(false);
-}
-
-void ShaderEditor::_show_warnings_panel(bool p_show) {
-	warnings_panel->set_visible(p_show);
-}
-
-void ShaderEditor::_warning_clicked(Variant p_line) {
-	if (p_line.get_type() == Variant::INT) {
-		shader_editor->get_text_editor()->set_caret_line(p_line.operator int64_t());
-	}
-}
-
-void ShaderEditor::_bind_methods() {
-	ClassDB::bind_method("_show_warnings_panel", &ShaderEditor::_show_warnings_panel);
-	ClassDB::bind_method("_warning_clicked", &ShaderEditor::_warning_clicked);
-
-	ADD_SIGNAL(MethodInfo("validation_changed"));
-}
-
-void ShaderEditor::ensure_select_current() {
-}
-
-void ShaderEditor::goto_line_selection(int p_line, int p_begin, int p_end) {
-	shader_editor->goto_line_selection(p_line, p_begin, p_end);
-}
-
-void ShaderEditor::_project_settings_changed() {
-	_update_warnings(true);
-}
-
-void ShaderEditor::_update_warnings(bool p_validate) {
-	bool changed = false;
-
-	bool warnings_enabled = GLOBAL_GET("debug/shader_language/warnings/enable").booleanize();
-	if (warnings_enabled != saved_warnings_enabled) {
-		saved_warnings_enabled = warnings_enabled;
-		changed = true;
-	}
-
-	bool treat_warning_as_errors = GLOBAL_GET("debug/shader_language/warnings/treat_warnings_as_errors").booleanize();
-	if (treat_warning_as_errors != saved_treat_warning_as_errors) {
-		saved_treat_warning_as_errors = treat_warning_as_errors;
-		changed = true;
-	}
-
-	bool update_flags = false;
-
-	for (int i = 0; i < ShaderWarning::WARNING_MAX; i++) {
-		ShaderWarning::Code code = (ShaderWarning::Code)i;
-		bool value = GLOBAL_GET("debug/shader_language/warnings/" + ShaderWarning::get_name_from_code(code).to_lower());
-
-		if (saved_warnings[code] != value) {
-			saved_warnings[code] = value;
-			update_flags = true;
-			changed = true;
-		}
-	}
-
-	if (update_flags) {
-		saved_warning_flags = (uint32_t)ShaderWarning::get_flags_from_codemap(saved_warnings);
-	}
-
-	if (p_validate && changed && shader_editor && shader_editor->get_edited_shader().is_valid()) {
-		shader_editor->validate_script();
-	}
-}
-
-void ShaderEditor::_check_for_external_edit() {
-	bool use_autoreload = bool(EDITOR_GET("text_editor/behavior/files/auto_reload_scripts_on_external_change"));
-
-	if (shader_inc.is_valid()) {
-		if (shader_inc->get_last_modified_time() != FileAccess::get_modified_time(shader_inc->get_path())) {
-			if (use_autoreload) {
-				_reload_shader_include_from_disk();
-			} else {
-				disk_changed->call_deferred(SNAME("popup_centered"));
-			}
-		}
-		return;
-	}
-
-	if (shader.is_null() || shader->is_built_in()) {
-		return;
-	}
-
-	if (shader->get_last_modified_time() != FileAccess::get_modified_time(shader->get_path())) {
-		if (use_autoreload) {
-			_reload_shader_from_disk();
-		} else {
-			disk_changed->call_deferred(SNAME("popup_centered"));
-		}
-	}
-}
-
-void ShaderEditor::_reload_shader_from_disk() {
-	Ref<Shader> rel_shader = ResourceLoader::load(shader->get_path(), shader->get_class(), ResourceFormatLoader::CACHE_MODE_IGNORE);
-	ERR_FAIL_COND(!rel_shader.is_valid());
-
-	shader_editor->set_block_shader_changed(true);
-	shader->set_code(rel_shader->get_code());
-	shader_editor->set_block_shader_changed(false);
-	shader->set_last_modified_time(rel_shader->get_last_modified_time());
-	shader_editor->reload_text();
-}
-
-void ShaderEditor::_reload_shader_include_from_disk() {
-	Ref<ShaderInclude> rel_shader_include = ResourceLoader::load(shader_inc->get_path(), shader_inc->get_class(), ResourceFormatLoader::CACHE_MODE_IGNORE);
-	ERR_FAIL_COND(!rel_shader_include.is_valid());
-
-	shader_editor->set_block_shader_changed(true);
-	shader_inc->set_code(rel_shader_include->get_code());
-	shader_editor->set_block_shader_changed(false);
-	shader_inc->set_last_modified_time(rel_shader_include->get_last_modified_time());
-	shader_editor->reload_text();
-}
-
-void ShaderEditor::_reload() {
-	if (shader.is_valid()) {
-		_reload_shader_from_disk();
-	} else if (shader_inc.is_valid()) {
-		_reload_shader_include_from_disk();
-	}
-}
-
-void ShaderEditor::edit(const Ref<Shader> &p_shader) {
-	if (p_shader.is_null() || !p_shader->is_text_shader()) {
-		return;
-	}
-
-	if (shader == p_shader) {
-		return;
-	}
-
-	shader = p_shader;
-	shader_inc = Ref<ShaderInclude>();
-
-	shader_editor->set_edited_shader(shader);
-}
-
-void ShaderEditor::edit(const Ref<ShaderInclude> &p_shader_inc) {
-	if (p_shader_inc.is_null()) {
-		return;
-	}
-
-	if (shader_inc == p_shader_inc) {
-		return;
-	}
-
-	shader_inc = p_shader_inc;
-	shader = Ref<Shader>();
-
-	shader_editor->set_edited_shader_include(p_shader_inc);
-}
-
-void ShaderEditor::save_external_data(const String &p_str) {
-	if (shader.is_null() && shader_inc.is_null()) {
-		disk_changed->hide();
-		return;
-	}
-
-	apply_shaders();
-
-	Ref<Shader> edited_shader = shader_editor->get_edited_shader();
-	if (edited_shader.is_valid()) {
-		ResourceSaver::save(edited_shader);
-	}
-	if (shader.is_valid() && shader != edited_shader) {
-		ResourceSaver::save(shader);
-	}
-
-	Ref<ShaderInclude> edited_shader_inc = shader_editor->get_edited_shader_include();
-	if (edited_shader_inc.is_valid()) {
-		ResourceSaver::save(edited_shader_inc);
-	}
-	if (shader_inc.is_valid() && shader_inc != edited_shader_inc) {
-		ResourceSaver::save(shader_inc);
-	}
-	shader_editor->get_text_editor()->tag_saved_version();
-
-	disk_changed->hide();
-}
-
-void ShaderEditor::validate_script() {
-	shader_editor->_validate_script();
-}
-
-bool ShaderEditor::is_unsaved() const {
-	return shader_editor->get_text_editor()->get_saved_version() != shader_editor->get_text_editor()->get_version();
-}
-
-void ShaderEditor::apply_shaders() {
-	String editor_code = shader_editor->get_text_editor()->get_text();
-	if (shader.is_valid()) {
-		String shader_code = shader->get_code();
-		if (shader_code != editor_code || dependencies_version != shader_editor->get_dependencies_version()) {
-			shader_editor->set_block_shader_changed(true);
-			shader->set_code(editor_code);
-			shader_editor->set_block_shader_changed(false);
-			shader->set_edited(true);
-		}
-	}
-	if (shader_inc.is_valid()) {
-		String shader_inc_code = shader_inc->get_code();
-		if (shader_inc_code != editor_code || dependencies_version != shader_editor->get_dependencies_version()) {
-			shader_editor->set_block_shader_changed(true);
-			shader_inc->set_code(editor_code);
-			shader_editor->set_block_shader_changed(false);
-			shader_inc->set_edited(true);
-		}
-	}
-
-	dependencies_version = shader_editor->get_dependencies_version();
-}
-
-void ShaderEditor::_text_edit_gui_input(const Ref<InputEvent> &ev) {
-	Ref<InputEventMouseButton> mb = ev;
-
-	if (mb.is_valid()) {
-		if (mb->get_button_index() == MouseButton::RIGHT && mb->is_pressed()) {
-			CodeEdit *tx = shader_editor->get_text_editor();
-
-			Point2i pos = tx->get_line_column_at_pos(mb->get_global_position() - tx->get_global_position());
-			int row = pos.y;
-			int col = pos.x;
-			tx->set_move_caret_on_right_click_enabled(EditorSettings::get_singleton()->get("text_editor/behavior/navigation/move_caret_on_right_click"));
-
-			if (tx->is_move_caret_on_right_click_enabled()) {
-				if (tx->has_selection()) {
-					int from_line = tx->get_selection_from_line();
-					int to_line = tx->get_selection_to_line();
-					int from_column = tx->get_selection_from_column();
-					int to_column = tx->get_selection_to_column();
-
-					if (row < from_line || row > to_line || (row == from_line && col < from_column) || (row == to_line && col > to_column)) {
-						// Right click is outside the selected text
-						tx->deselect();
-					}
-				}
-				if (!tx->has_selection()) {
-					tx->set_caret_line(row, true, false);
-					tx->set_caret_column(col);
-				}
-			}
-			_make_context_menu(tx->has_selection(), get_local_mouse_position());
-		}
-	}
-
-	Ref<InputEventKey> k = ev;
-	if (k.is_valid() && k->is_pressed() && k->is_action("ui_menu", true)) {
-		CodeEdit *tx = shader_editor->get_text_editor();
-		tx->adjust_viewport_to_caret();
-		_make_context_menu(tx->has_selection(), (get_global_transform().inverse() * tx->get_global_transform()).xform(tx->get_caret_draw_pos()));
-		context_menu->grab_focus();
-	}
-}
-
-void ShaderEditor::_update_bookmark_list() {
-	bookmarks_menu->clear();
-
-	bookmarks_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/toggle_bookmark"), BOOKMARK_TOGGLE);
-	bookmarks_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/remove_all_bookmarks"), BOOKMARK_REMOVE_ALL);
-	bookmarks_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/goto_next_bookmark"), BOOKMARK_GOTO_NEXT);
-	bookmarks_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/goto_previous_bookmark"), BOOKMARK_GOTO_PREV);
-
-	PackedInt32Array bookmark_list = shader_editor->get_text_editor()->get_bookmarked_lines();
-	if (bookmark_list.size() == 0) {
-		return;
-	}
-
-	bookmarks_menu->add_separator();
-
-	for (int i = 0; i < bookmark_list.size(); i++) {
-		String line = shader_editor->get_text_editor()->get_line(bookmark_list[i]).strip_edges();
-		// Limit the size of the line if too big.
-		if (line.length() > 50) {
-			line = line.substr(0, 50);
-		}
-
-		bookmarks_menu->add_item(String::num((int)bookmark_list[i] + 1) + " - \"" + line + "\"");
-		bookmarks_menu->set_item_metadata(-1, bookmark_list[i]);
-	}
-}
-
-void ShaderEditor::_bookmark_item_pressed(int p_idx) {
-	if (p_idx < 4) { // Any item before the separator.
-		_menu_option(bookmarks_menu->get_item_id(p_idx));
-	} else {
-		shader_editor->goto_line(bookmarks_menu->get_item_metadata(p_idx));
-	}
-}
-
-void ShaderEditor::_make_context_menu(bool p_selection, Vector2 p_position) {
-	context_menu->clear();
-	if (p_selection) {
-		context_menu->add_shortcut(ED_GET_SHORTCUT("ui_cut"), EDIT_CUT);
-		context_menu->add_shortcut(ED_GET_SHORTCUT("ui_copy"), EDIT_COPY);
-	}
-
-	context_menu->add_shortcut(ED_GET_SHORTCUT("ui_paste"), EDIT_PASTE);
-	context_menu->add_separator();
-	context_menu->add_shortcut(ED_GET_SHORTCUT("ui_text_select_all"), EDIT_SELECT_ALL);
-	context_menu->add_shortcut(ED_GET_SHORTCUT("ui_undo"), EDIT_UNDO);
-	context_menu->add_shortcut(ED_GET_SHORTCUT("ui_redo"), EDIT_REDO);
-
-	context_menu->add_separator();
-	context_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/indent"), EDIT_INDENT);
-	context_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/unindent"), EDIT_UNINDENT);
-	context_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/toggle_comment"), EDIT_TOGGLE_COMMENT);
-	context_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/toggle_bookmark"), BOOKMARK_TOGGLE);
-
-	context_menu->set_position(get_screen_position() + p_position);
-	context_menu->reset_size();
-	context_menu->popup();
-}
-
-ShaderEditor::ShaderEditor() {
-	GLOBAL_DEF("debug/shader_language/warnings/enable", true);
-	GLOBAL_DEF("debug/shader_language/warnings/treat_warnings_as_errors", false);
-	for (int i = 0; i < (int)ShaderWarning::WARNING_MAX; i++) {
-		GLOBAL_DEF("debug/shader_language/warnings/" + ShaderWarning::get_name_from_code((ShaderWarning::Code)i).to_lower(), true);
-	}
-	_update_warnings(false);
-
-	shader_editor = memnew(ShaderTextEditor);
-
-	shader_editor->connect("script_validated", callable_mp(this, &ShaderEditor::_script_validated));
-
-	shader_editor->set_v_size_flags(SIZE_EXPAND_FILL);
-	shader_editor->add_theme_constant_override("separation", 0);
-	shader_editor->set_anchors_and_offsets_preset(Control::PRESET_FULL_RECT);
-
-	shader_editor->connect("show_warnings_panel", callable_mp(this, &ShaderEditor::_show_warnings_panel));
-	shader_editor->connect("script_changed", callable_mp(this, &ShaderEditor::apply_shaders));
-	EditorSettings::get_singleton()->connect("settings_changed", callable_mp(this, &ShaderEditor::_editor_settings_changed));
-	ProjectSettingsEditor::get_singleton()->connect("confirmed", callable_mp(this, &ShaderEditor::_project_settings_changed));
-
-	shader_editor->get_text_editor()->set_code_hint_draw_below(EditorSettings::get_singleton()->get("text_editor/completion/put_callhint_tooltip_below_current_line"));
-
-	shader_editor->get_text_editor()->set_symbol_lookup_on_click_enabled(true);
-	shader_editor->get_text_editor()->set_context_menu_enabled(false);
-	shader_editor->get_text_editor()->connect("gui_input", callable_mp(this, &ShaderEditor::_text_edit_gui_input));
-
-	shader_editor->update_editor_settings();
-
-	context_menu = memnew(PopupMenu);
-	add_child(context_menu);
-	context_menu->connect("id_pressed", callable_mp(this, &ShaderEditor::_menu_option));
-
-	VBoxContainer *main_container = memnew(VBoxContainer);
-	HBoxContainer *hbc = memnew(HBoxContainer);
-
-	edit_menu = memnew(MenuButton);
-	edit_menu->set_shortcut_context(this);
-	edit_menu->set_text(TTR("Edit"));
-	edit_menu->set_switch_on_hover(true);
-
-	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("ui_undo"), EDIT_UNDO);
-	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("ui_redo"), EDIT_REDO);
-	edit_menu->get_popup()->add_separator();
-	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("ui_cut"), EDIT_CUT);
-	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("ui_copy"), EDIT_COPY);
-	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("ui_paste"), EDIT_PASTE);
-	edit_menu->get_popup()->add_separator();
-	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("ui_text_select_all"), EDIT_SELECT_ALL);
-	edit_menu->get_popup()->add_separator();
-	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/move_up"), EDIT_MOVE_LINE_UP);
-	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/move_down"), EDIT_MOVE_LINE_DOWN);
-	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/indent"), EDIT_INDENT);
-	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/unindent"), EDIT_UNINDENT);
-	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/delete_line"), EDIT_DELETE_LINE);
-	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/toggle_comment"), EDIT_TOGGLE_COMMENT);
-	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/duplicate_selection"), EDIT_DUPLICATE_SELECTION);
-	edit_menu->get_popup()->add_separator();
-	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("ui_text_completion_query"), EDIT_COMPLETE);
-	edit_menu->get_popup()->connect("id_pressed", callable_mp(this, &ShaderEditor::_menu_option));
-
-	search_menu = memnew(MenuButton);
-	search_menu->set_shortcut_context(this);
-	search_menu->set_text(TTR("Search"));
-	search_menu->set_switch_on_hover(true);
-
-	search_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/find"), SEARCH_FIND);
-	search_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/find_next"), SEARCH_FIND_NEXT);
-	search_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/find_previous"), SEARCH_FIND_PREV);
-	search_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/replace"), SEARCH_REPLACE);
-	search_menu->get_popup()->connect("id_pressed", callable_mp(this, &ShaderEditor::_menu_option));
-
-	MenuButton *goto_menu = memnew(MenuButton);
-	goto_menu->set_shortcut_context(this);
-	goto_menu->set_text(TTR("Go To"));
-	goto_menu->set_switch_on_hover(true);
-	goto_menu->get_popup()->connect("id_pressed", callable_mp(this, &ShaderEditor::_menu_option));
-
-	goto_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/goto_line"), SEARCH_GOTO_LINE);
-	goto_menu->get_popup()->add_separator();
-
-	bookmarks_menu = memnew(PopupMenu);
-	bookmarks_menu->set_name("Bookmarks");
-	goto_menu->get_popup()->add_child(bookmarks_menu);
-	goto_menu->get_popup()->add_submenu_item(TTR("Bookmarks"), "Bookmarks");
-	_update_bookmark_list();
-	bookmarks_menu->connect("about_to_popup", callable_mp(this, &ShaderEditor::_update_bookmark_list));
-	bookmarks_menu->connect("index_pressed", callable_mp(this, &ShaderEditor::_bookmark_item_pressed));
-
-	help_menu = memnew(MenuButton);
-	help_menu->set_text(TTR("Help"));
-	help_menu->set_switch_on_hover(true);
-	help_menu->get_popup()->add_item(TTR("Online Docs"), HELP_DOCS);
-	help_menu->get_popup()->connect("id_pressed", callable_mp(this, &ShaderEditor::_menu_option));
-
-	add_child(main_container);
-	main_container->add_child(hbc);
-	hbc->add_child(search_menu);
-	hbc->add_child(edit_menu);
-	hbc->add_child(goto_menu);
-	hbc->add_child(help_menu);
-	hbc->add_theme_style_override("panel", EditorNode::get_singleton()->get_gui_base()->get_theme_stylebox(SNAME("ScriptEditorPanel"), SNAME("EditorStyles")));
-
-	VSplitContainer *editor_box = memnew(VSplitContainer);
-	main_container->add_child(editor_box);
-	editor_box->set_anchors_and_offsets_preset(Control::PRESET_FULL_RECT);
-	editor_box->set_v_size_flags(SIZE_EXPAND_FILL);
-	editor_box->add_child(shader_editor);
-
-	FindReplaceBar *bar = memnew(FindReplaceBar);
-	main_container->add_child(bar);
-	bar->hide();
-	shader_editor->set_find_replace_bar(bar);
-
-	warnings_panel = memnew(RichTextLabel);
-	warnings_panel->set_custom_minimum_size(Size2(0, 100 * EDSCALE));
-	warnings_panel->set_h_size_flags(SIZE_EXPAND_FILL);
-	warnings_panel->set_meta_underline(true);
-	warnings_panel->set_selection_enabled(true);
-	warnings_panel->set_focus_mode(FOCUS_CLICK);
-	warnings_panel->hide();
-	warnings_panel->connect("meta_clicked", callable_mp(this, &ShaderEditor::_warning_clicked));
-	editor_box->add_child(warnings_panel);
-	shader_editor->set_warnings_panel(warnings_panel);
-
-	goto_line_dialog = memnew(GotoLineDialog);
-	add_child(goto_line_dialog);
-
-	disk_changed = memnew(ConfirmationDialog);
-
-	VBoxContainer *vbc = memnew(VBoxContainer);
-	disk_changed->add_child(vbc);
-
-	Label *dl = memnew(Label);
-	dl->set_text(TTR("This shader has been modified on disk.\nWhat action should be taken?"));
-	vbc->add_child(dl);
-
-	disk_changed->connect("confirmed", callable_mp(this, &ShaderEditor::_reload));
-	disk_changed->set_ok_button_text(TTR("Reload"));
-
-	disk_changed->add_button(TTR("Resave"), !DisplayServer::get_singleton()->get_swap_cancel_ok(), "resave");
-	disk_changed->connect("custom_action", callable_mp(this, &ShaderEditor::save_external_data));
-
-	add_child(disk_changed);
-
-	_editor_settings_changed();
-}
 
 void ShaderEditorPlugin::_update_shader_list() {
 	shader_list->clear();
@@ -1250,7 +90,7 @@ void ShaderEditorPlugin::_update_shader_list() {
 
 void ShaderEditorPlugin::_update_shader_list_status() {
 	for (int i = 0; i < shader_list->get_item_count(); i++) {
-		ShaderEditor *se = Object::cast_to<ShaderEditor>(shader_tabs->get_tab_control(i));
+		TextShaderEditor *se = Object::cast_to<TextShaderEditor>(shader_tabs->get_tab_control(i));
 		if (se) {
 			if (se->was_compilation_successful()) {
 				shader_list->set_item_tag_icon(i, Ref<Texture2D>());
@@ -1285,7 +125,7 @@ void ShaderEditorPlugin::edit(Object *p_object) {
 			}
 		}
 		es.shader_inc = Ref<ShaderInclude>(si);
-		es.shader_editor = memnew(ShaderEditor);
+		es.shader_editor = memnew(TextShaderEditor);
 		es.shader_editor->edit(si);
 		shader_tabs->add_child(es.shader_editor);
 		es.shader_editor->connect("validation_changed", callable_mp(this, &ShaderEditorPlugin::_update_shader_list));
@@ -1305,7 +145,7 @@ void ShaderEditorPlugin::edit(Object *p_object) {
 			shader_tabs->add_child(es.visual_shader_editor);
 			es.visual_shader_editor->edit(vs.ptr());
 		} else {
-			es.shader_editor = memnew(ShaderEditor);
+			es.shader_editor = memnew(TextShaderEditor);
 			shader_tabs->add_child(es.shader_editor);
 			es.shader_editor->edit(s);
 			es.shader_editor->connect("validation_changed", callable_mp(this, &ShaderEditorPlugin::_update_shader_list));
@@ -1330,7 +170,7 @@ void ShaderEditorPlugin::make_visible(bool p_visible) {
 void ShaderEditorPlugin::selected_notify() {
 }
 
-ShaderEditor *ShaderEditorPlugin::get_shader_editor(const Ref<Shader> &p_for_shader) {
+TextShaderEditor *ShaderEditorPlugin::get_shader_editor(const Ref<Shader> &p_for_shader) {
 	for (uint32_t i = 0; i < edited_shaders.size(); i++) {
 		if (edited_shaders[i].shader == p_for_shader) {
 			return edited_shaders[i].shader_editor;
diff --git a/editor/plugins/shader_editor_plugin.h b/editor/plugins/shader_editor_plugin.h
index 2162ee0a1c..7638778af7 100644
--- a/editor/plugins/shader_editor_plugin.h
+++ b/editor/plugins/shader_editor_plugin.h
@@ -31,181 +31,14 @@
 #ifndef SHADER_EDITOR_PLUGIN_H
 #define SHADER_EDITOR_PLUGIN_H
 
-#include "editor/code_editor.h"
 #include "editor/editor_plugin.h"
-#include "scene/gui/menu_button.h"
-#include "scene/gui/panel_container.h"
-#include "scene/gui/rich_text_label.h"
-#include "scene/gui/tab_container.h"
-#include "scene/gui/text_edit.h"
-#include "scene/main/timer.h"
-#include "scene/resources/shader.h"
-#include "scene/resources/shader_include.h"
-#include "servers/rendering/shader_warnings.h"
 
-class ItemList;
-class VisualShaderEditor;
 class HSplitContainer;
+class ItemList;
 class ShaderCreateDialog;
-
-class GDShaderSyntaxHighlighter : public CodeHighlighter {
-	GDCLASS(GDShaderSyntaxHighlighter, CodeHighlighter)
-
-private:
-	Vector<Point2i> disabled_branch_regions;
-	Color disabled_branch_color;
-
-public:
-	virtual Dictionary _get_line_syntax_highlighting_impl(int p_line) override;
-
-	void add_disabled_branch_region(const Point2i &p_region);
-	void clear_disabled_branch_regions();
-	void set_disabled_branch_color(const Color &p_color);
-};
-
-class ShaderTextEditor : public CodeTextEditor {
-	GDCLASS(ShaderTextEditor, CodeTextEditor);
-
-	Color marked_line_color = Color(1, 1, 1);
-
-	struct WarningsComparator {
-		_ALWAYS_INLINE_ bool operator()(const ShaderWarning &p_a, const ShaderWarning &p_b) const { return (p_a.get_line() < p_b.get_line()); }
-	};
-
-	Ref<GDShaderSyntaxHighlighter> syntax_highlighter;
-	RichTextLabel *warnings_panel = nullptr;
-	Ref<Shader> shader;
-	Ref<ShaderInclude> shader_inc;
-	List<ShaderWarning> warnings;
-	Error last_compile_result = Error::OK;
-
-	void _check_shader_mode();
-	void _update_warning_panel();
-
-	bool block_shader_changed = false;
-	void _shader_changed();
-
-	uint32_t dependencies_version = 0; // Incremented if deps changed
-
-protected:
-	void _notification(int p_what);
-	static void _bind_methods();
-	virtual void _load_theme_settings() override;
-
-	virtual void _code_complete_script(const String &p_code, List<ScriptLanguage::CodeCompletionOption> *r_options) override;
-
-public:
-	void set_block_shader_changed(bool p_block) { block_shader_changed = p_block; }
-	uint32_t get_dependencies_version() const { return dependencies_version; }
-
-	virtual void _validate_script() override;
-
-	void reload_text();
-	void set_warnings_panel(RichTextLabel *p_warnings_panel);
-
-	Ref<Shader> get_edited_shader() const;
-	Ref<ShaderInclude> get_edited_shader_include() const;
-
-	void set_edited_shader(const Ref<Shader> &p_shader);
-	void set_edited_shader(const Ref<Shader> &p_shader, const String &p_code);
-	void set_edited_shader_include(const Ref<ShaderInclude> &p_include);
-	void set_edited_shader_include(const Ref<ShaderInclude> &p_include, const String &p_code);
-	void set_edited_code(const String &p_code);
-
-	ShaderTextEditor();
-};
-
-class ShaderEditor : public MarginContainer {
-	GDCLASS(ShaderEditor, MarginContainer);
-
-	enum {
-		EDIT_UNDO,
-		EDIT_REDO,
-		EDIT_CUT,
-		EDIT_COPY,
-		EDIT_PASTE,
-		EDIT_SELECT_ALL,
-		EDIT_MOVE_LINE_UP,
-		EDIT_MOVE_LINE_DOWN,
-		EDIT_INDENT,
-		EDIT_UNINDENT,
-		EDIT_DELETE_LINE,
-		EDIT_DUPLICATE_SELECTION,
-		EDIT_TOGGLE_COMMENT,
-		EDIT_COMPLETE,
-		SEARCH_FIND,
-		SEARCH_FIND_NEXT,
-		SEARCH_FIND_PREV,
-		SEARCH_REPLACE,
-		SEARCH_GOTO_LINE,
-		BOOKMARK_TOGGLE,
-		BOOKMARK_GOTO_NEXT,
-		BOOKMARK_GOTO_PREV,
-		BOOKMARK_REMOVE_ALL,
-		HELP_DOCS,
-	};
-
-	MenuButton *edit_menu = nullptr;
-	MenuButton *search_menu = nullptr;
-	PopupMenu *bookmarks_menu = nullptr;
-	MenuButton *help_menu = nullptr;
-	PopupMenu *context_menu = nullptr;
-	RichTextLabel *warnings_panel = nullptr;
-	uint64_t idle = 0;
-
-	GotoLineDialog *goto_line_dialog = nullptr;
-	ConfirmationDialog *erase_tab_confirm = nullptr;
-	ConfirmationDialog *disk_changed = nullptr;
-
-	ShaderTextEditor *shader_editor = nullptr;
-	bool compilation_success = true;
-
-	void _menu_option(int p_option);
-	mutable Ref<Shader> shader;
-	mutable Ref<ShaderInclude> shader_inc;
-
-	void _editor_settings_changed();
-	void _project_settings_changed();
-
-	void _check_for_external_edit();
-	void _reload_shader_from_disk();
-	void _reload_shader_include_from_disk();
-	void _reload();
-	void _show_warnings_panel(bool p_show);
-	void _warning_clicked(Variant p_line);
-	void _update_warnings(bool p_validate);
-
-	void _script_validated(bool p_valid) {
-		compilation_success = p_valid;
-		emit_signal(SNAME("validation_changed"));
-	}
-
-	uint32_t dependencies_version = 0xFFFFFFFF;
-
-protected:
-	void _notification(int p_what);
-	static void _bind_methods();
-	void _make_context_menu(bool p_selection, Vector2 p_position);
-	void _text_edit_gui_input(const Ref<InputEvent> &p_ev);
-
-	void _update_bookmark_list();
-	void _bookmark_item_pressed(int p_idx);
-
-public:
-	bool was_compilation_successful() const { return compilation_success; }
-	void apply_shaders();
-	void ensure_select_current();
-	void edit(const Ref<Shader> &p_shader);
-	void edit(const Ref<ShaderInclude> &p_shader_inc);
-	void goto_line_selection(int p_line, int p_begin, int p_end);
-	void save_external_data(const String &p_str = "");
-	void validate_script();
-	bool is_unsaved() const;
-
-	virtual Size2 get_minimum_size() const override { return Size2(0, 200); }
-
-	ShaderEditor();
-};
+class TabContainer;
+class TextShaderEditor;
+class VisualShaderEditor;
 
 class ShaderEditorPlugin : public EditorPlugin {
 	GDCLASS(ShaderEditorPlugin, EditorPlugin);
@@ -213,7 +46,7 @@ class ShaderEditorPlugin : public EditorPlugin {
 	struct EditedShader {
 		Ref<Shader> shader;
 		Ref<ShaderInclude> shader_inc;
-		ShaderEditor *shader_editor = nullptr;
+		TextShaderEditor *shader_editor = nullptr;
 		VisualShaderEditor *visual_shader_editor = nullptr;
 	};
 
@@ -267,7 +100,7 @@ public:
 	virtual void make_visible(bool p_visible) override;
 	virtual void selected_notify() override;
 
-	ShaderEditor *get_shader_editor(const Ref<Shader> &p_for_shader);
+	TextShaderEditor *get_shader_editor(const Ref<Shader> &p_for_shader);
 	VisualShaderEditor *get_visual_shader_editor(const Ref<Shader> &p_for_shader);
 
 	virtual void save_external_data() override;
diff --git a/editor/plugins/text_shader_editor.cpp b/editor/plugins/text_shader_editor.cpp
new file mode 100644
index 0000000000..dfd5e76ba6
--- /dev/null
+++ b/editor/plugins/text_shader_editor.cpp
@@ -0,0 +1,1191 @@
+/*************************************************************************/
+/*  text_shader_editor.cpp                                               */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "text_shader_editor.h"
+
+#include "core/version_generated.gen.h"
+#include "editor/editor_node.h"
+#include "editor/editor_scale.h"
+#include "editor/editor_settings.h"
+#include "editor/filesystem_dock.h"
+#include "editor/project_settings_editor.h"
+#include "scene/gui/split_container.h"
+#include "servers/rendering/shader_preprocessor.h"
+#include "servers/rendering/shader_types.h"
+
+/*** SHADER SYNTAX HIGHLIGHTER ****/
+
+Dictionary GDShaderSyntaxHighlighter::_get_line_syntax_highlighting_impl(int p_line) {
+	Dictionary color_map;
+
+	for (const Point2i &region : disabled_branch_regions) {
+		if (p_line >= region.x && p_line <= region.y) {
+			Dictionary highlighter_info;
+			highlighter_info["color"] = disabled_branch_color;
+
+			color_map[0] = highlighter_info;
+			return color_map;
+		}
+	}
+
+	return CodeHighlighter::_get_line_syntax_highlighting_impl(p_line);
+}
+
+void GDShaderSyntaxHighlighter::add_disabled_branch_region(const Point2i &p_region) {
+	ERR_FAIL_COND(p_region.x < 0);
+	ERR_FAIL_COND(p_region.y < 0);
+
+	for (int i = 0; i < disabled_branch_regions.size(); i++) {
+		ERR_FAIL_COND_MSG(disabled_branch_regions[i].x == p_region.x, "Branch region with a start line '" + itos(p_region.x) + "' already exists.");
+	}
+
+	Point2i disabled_branch_region;
+	disabled_branch_region.x = p_region.x;
+	disabled_branch_region.y = p_region.y;
+	disabled_branch_regions.push_back(disabled_branch_region);
+
+	clear_highlighting_cache();
+}
+
+void GDShaderSyntaxHighlighter::clear_disabled_branch_regions() {
+	disabled_branch_regions.clear();
+	clear_highlighting_cache();
+}
+
+void GDShaderSyntaxHighlighter::set_disabled_branch_color(const Color &p_color) {
+	disabled_branch_color = p_color;
+	clear_highlighting_cache();
+}
+
+/*** SHADER SCRIPT EDITOR ****/
+
+static bool saved_warnings_enabled = false;
+static bool saved_treat_warning_as_errors = false;
+static HashMap<ShaderWarning::Code, bool> saved_warnings;
+static uint32_t saved_warning_flags = 0U;
+
+void ShaderTextEditor::_notification(int p_what) {
+	switch (p_what) {
+		case NOTIFICATION_THEME_CHANGED: {
+			if (is_visible_in_tree()) {
+				_load_theme_settings();
+				if (warnings.size() > 0 && last_compile_result == OK) {
+					warnings_panel->clear();
+					_update_warning_panel();
+				}
+			}
+		} break;
+	}
+}
+
+Ref<Shader> ShaderTextEditor::get_edited_shader() const {
+	return shader;
+}
+
+Ref<ShaderInclude> ShaderTextEditor::get_edited_shader_include() const {
+	return shader_inc;
+}
+
+void ShaderTextEditor::set_edited_shader(const Ref<Shader> &p_shader) {
+	set_edited_shader(p_shader, p_shader->get_code());
+}
+
+void ShaderTextEditor::set_edited_shader(const Ref<Shader> &p_shader, const String &p_code) {
+	if (shader == p_shader) {
+		return;
+	}
+	if (shader.is_valid()) {
+		shader->disconnect(SNAME("changed"), callable_mp(this, &ShaderTextEditor::_shader_changed));
+	}
+	shader = p_shader;
+	shader_inc = Ref<ShaderInclude>();
+
+	set_edited_code(p_code);
+
+	if (shader.is_valid()) {
+		shader->connect(SNAME("changed"), callable_mp(this, &ShaderTextEditor::_shader_changed));
+	}
+}
+
+void ShaderTextEditor::set_edited_shader_include(const Ref<ShaderInclude> &p_shader_inc) {
+	set_edited_shader_include(p_shader_inc, p_shader_inc->get_code());
+}
+
+void ShaderTextEditor::_shader_changed() {
+	// This function is used for dependencies (include changing changes main shader and forces it to revalidate)
+	if (block_shader_changed) {
+		return;
+	}
+	dependencies_version++;
+	_validate_script();
+}
+
+void ShaderTextEditor::set_edited_shader_include(const Ref<ShaderInclude> &p_shader_inc, const String &p_code) {
+	if (shader_inc == p_shader_inc) {
+		return;
+	}
+	if (shader_inc.is_valid()) {
+		shader_inc->disconnect(SNAME("changed"), callable_mp(this, &ShaderTextEditor::_shader_changed));
+	}
+	shader_inc = p_shader_inc;
+	shader = Ref<Shader>();
+
+	set_edited_code(p_code);
+
+	if (shader_inc.is_valid()) {
+		shader_inc->connect(SNAME("changed"), callable_mp(this, &ShaderTextEditor::_shader_changed));
+	}
+}
+
+void ShaderTextEditor::set_edited_code(const String &p_code) {
+	_load_theme_settings();
+
+	get_text_editor()->set_text(p_code);
+	get_text_editor()->clear_undo_history();
+	get_text_editor()->call_deferred(SNAME("set_h_scroll"), 0);
+	get_text_editor()->call_deferred(SNAME("set_v_scroll"), 0);
+	get_text_editor()->tag_saved_version();
+
+	_validate_script();
+	_line_col_changed();
+}
+
+void ShaderTextEditor::reload_text() {
+	ERR_FAIL_COND(shader.is_null());
+
+	CodeEdit *te = get_text_editor();
+	int column = te->get_caret_column();
+	int row = te->get_caret_line();
+	int h = te->get_h_scroll();
+	int v = te->get_v_scroll();
+
+	te->set_text(shader->get_code());
+	te->set_caret_line(row);
+	te->set_caret_column(column);
+	te->set_h_scroll(h);
+	te->set_v_scroll(v);
+
+	te->tag_saved_version();
+
+	update_line_and_column();
+}
+
+void ShaderTextEditor::set_warnings_panel(RichTextLabel *p_warnings_panel) {
+	warnings_panel = p_warnings_panel;
+}
+
+void ShaderTextEditor::_load_theme_settings() {
+	CodeEdit *text_editor = get_text_editor();
+	Color updated_marked_line_color = EDITOR_GET("text_editor/theme/highlighting/mark_color");
+	if (updated_marked_line_color != marked_line_color) {
+		for (int i = 0; i < text_editor->get_line_count(); i++) {
+			if (text_editor->get_line_background_color(i) == marked_line_color) {
+				text_editor->set_line_background_color(i, updated_marked_line_color);
+			}
+		}
+		marked_line_color = updated_marked_line_color;
+	}
+
+	syntax_highlighter->set_number_color(EDITOR_GET("text_editor/theme/highlighting/number_color"));
+	syntax_highlighter->set_symbol_color(EDITOR_GET("text_editor/theme/highlighting/symbol_color"));
+	syntax_highlighter->set_function_color(EDITOR_GET("text_editor/theme/highlighting/function_color"));
+	syntax_highlighter->set_member_variable_color(EDITOR_GET("text_editor/theme/highlighting/member_variable_color"));
+
+	syntax_highlighter->clear_keyword_colors();
+
+	const Color keyword_color = EDITOR_GET("text_editor/theme/highlighting/keyword_color");
+	const Color control_flow_keyword_color = EDITOR_GET("text_editor/theme/highlighting/control_flow_keyword_color");
+
+	List<String> keywords;
+	ShaderLanguage::get_keyword_list(&keywords);
+
+	for (const String &E : keywords) {
+		if (ShaderLanguage::is_control_flow_keyword(E)) {
+			syntax_highlighter->add_keyword_color(E, control_flow_keyword_color);
+		} else {
+			syntax_highlighter->add_keyword_color(E, keyword_color);
+		}
+	}
+
+	List<String> pp_keywords;
+	ShaderPreprocessor::get_keyword_list(&pp_keywords, false);
+
+	for (const String &E : pp_keywords) {
+		syntax_highlighter->add_keyword_color(E, keyword_color);
+	}
+
+	// Colorize built-ins like `COLOR` differently to make them easier
+	// to distinguish from keywords at a quick glance.
+
+	List<String> built_ins;
+
+	if (shader_inc.is_valid()) {
+		for (int i = 0; i < RenderingServer::SHADER_MAX; i++) {
+			for (const KeyValue<StringName, ShaderLanguage::FunctionInfo> &E : ShaderTypes::get_singleton()->get_functions(RenderingServer::ShaderMode(i))) {
+				for (const KeyValue<StringName, ShaderLanguage::BuiltInInfo> &F : E.value.built_ins) {
+					built_ins.push_back(F.key);
+				}
+			}
+
+			const Vector<ShaderLanguage::ModeInfo> &modes = ShaderTypes::get_singleton()->get_modes(RenderingServer::ShaderMode(i));
+
+			for (int j = 0; j < modes.size(); j++) {
+				const ShaderLanguage::ModeInfo &info = modes[j];
+
+				if (!info.options.is_empty()) {
+					for (int k = 0; k < info.options.size(); k++) {
+						built_ins.push_back(String(info.name) + "_" + String(info.options[k]));
+					}
+				} else {
+					built_ins.push_back(String(info.name));
+				}
+			}
+		}
+	} else if (shader.is_valid()) {
+		for (const KeyValue<StringName, ShaderLanguage::FunctionInfo> &E : ShaderTypes::get_singleton()->get_functions(RenderingServer::ShaderMode(shader->get_mode()))) {
+			for (const KeyValue<StringName, ShaderLanguage::BuiltInInfo> &F : E.value.built_ins) {
+				built_ins.push_back(F.key);
+			}
+		}
+
+		const Vector<ShaderLanguage::ModeInfo> &modes = ShaderTypes::get_singleton()->get_modes(RenderingServer::ShaderMode(shader->get_mode()));
+
+		for (int i = 0; i < modes.size(); i++) {
+			const ShaderLanguage::ModeInfo &info = modes[i];
+
+			if (!info.options.is_empty()) {
+				for (int j = 0; j < info.options.size(); j++) {
+					built_ins.push_back(String(info.name) + "_" + String(info.options[j]));
+				}
+			} else {
+				built_ins.push_back(String(info.name));
+			}
+		}
+	}
+
+	const Color user_type_color = EDITOR_GET("text_editor/theme/highlighting/user_type_color");
+
+	for (const String &E : built_ins) {
+		syntax_highlighter->add_keyword_color(E, user_type_color);
+	}
+
+	// Colorize comments.
+	const Color comment_color = EDITOR_GET("text_editor/theme/highlighting/comment_color");
+	syntax_highlighter->clear_color_regions();
+	syntax_highlighter->add_color_region("/*", "*/", comment_color, false);
+	syntax_highlighter->add_color_region("//", "", comment_color, true);
+	syntax_highlighter->set_disabled_branch_color(comment_color);
+
+	text_editor->clear_comment_delimiters();
+	text_editor->add_comment_delimiter("/*", "*/", false);
+	text_editor->add_comment_delimiter("//", "", true);
+
+	if (!text_editor->has_auto_brace_completion_open_key("/*")) {
+		text_editor->add_auto_brace_completion_pair("/*", "*/");
+	}
+
+	// Colorize preprocessor include strings.
+	const Color string_color = EDITOR_GET("text_editor/theme/highlighting/string_color");
+	syntax_highlighter->add_color_region("\"", "\"", string_color, false);
+
+	if (warnings_panel) {
+		// Warnings panel.
+		warnings_panel->add_theme_font_override("normal_font", EditorNode::get_singleton()->get_gui_base()->get_theme_font(SNAME("main"), SNAME("EditorFonts")));
+		warnings_panel->add_theme_font_size_override("normal_font_size", EditorNode::get_singleton()->get_gui_base()->get_theme_font_size(SNAME("main_size"), SNAME("EditorFonts")));
+	}
+}
+
+void ShaderTextEditor::_check_shader_mode() {
+	String type = ShaderLanguage::get_shader_type(get_text_editor()->get_text());
+
+	Shader::Mode mode;
+
+	if (type == "canvas_item") {
+		mode = Shader::MODE_CANVAS_ITEM;
+	} else if (type == "particles") {
+		mode = Shader::MODE_PARTICLES;
+	} else if (type == "sky") {
+		mode = Shader::MODE_SKY;
+	} else if (type == "fog") {
+		mode = Shader::MODE_FOG;
+	} else {
+		mode = Shader::MODE_SPATIAL;
+	}
+
+	if (shader->get_mode() != mode) {
+		set_block_shader_changed(true);
+		shader->set_code(get_text_editor()->get_text());
+		set_block_shader_changed(false);
+		_load_theme_settings();
+	}
+}
+
+static ShaderLanguage::DataType _get_global_shader_uniform_type(const StringName &p_variable) {
+	RS::GlobalShaderParameterType gvt = RS::get_singleton()->global_shader_parameter_get_type(p_variable);
+	return (ShaderLanguage::DataType)RS::global_shader_uniform_type_get_shader_datatype(gvt);
+}
+
+static String complete_from_path;
+
+static void _complete_include_paths_search(EditorFileSystemDirectory *p_efsd, List<ScriptLanguage::CodeCompletionOption> *r_options) {
+	if (!p_efsd) {
+		return;
+	}
+	for (int i = 0; i < p_efsd->get_file_count(); i++) {
+		if (p_efsd->get_file_type(i) == SNAME("ShaderInclude")) {
+			String path = p_efsd->get_file_path(i);
+			if (path.begins_with(complete_from_path)) {
+				path = path.replace_first(complete_from_path, "");
+			}
+			r_options->push_back(ScriptLanguage::CodeCompletionOption(path, ScriptLanguage::CODE_COMPLETION_KIND_FILE_PATH));
+		}
+	}
+	for (int j = 0; j < p_efsd->get_subdir_count(); j++) {
+		_complete_include_paths_search(p_efsd->get_subdir(j), r_options);
+	}
+}
+
+static void _complete_include_paths(List<ScriptLanguage::CodeCompletionOption> *r_options) {
+	_complete_include_paths_search(EditorFileSystem::get_singleton()->get_filesystem(), r_options);
+}
+
+void ShaderTextEditor::_code_complete_script(const String &p_code, List<ScriptLanguage::CodeCompletionOption> *r_options) {
+	List<ScriptLanguage::CodeCompletionOption> pp_options;
+	List<ScriptLanguage::CodeCompletionOption> pp_defines;
+	ShaderPreprocessor preprocessor;
+	String code;
+	complete_from_path = (shader.is_valid() ? shader->get_path() : shader_inc->get_path()).get_base_dir();
+	if (!complete_from_path.ends_with("/")) {
+		complete_from_path += "/";
+	}
+	preprocessor.preprocess(p_code, "", code, nullptr, nullptr, nullptr, nullptr, &pp_options, &pp_defines, _complete_include_paths);
+	complete_from_path = String();
+	if (pp_options.size()) {
+		for (const ScriptLanguage::CodeCompletionOption &E : pp_options) {
+			r_options->push_back(E);
+		}
+		return;
+	}
+	for (const ScriptLanguage::CodeCompletionOption &E : pp_defines) {
+		r_options->push_back(E);
+	}
+
+	ShaderLanguage sl;
+	String calltip;
+	ShaderLanguage::ShaderCompileInfo info;
+	info.global_shader_uniform_type_func = _get_global_shader_uniform_type;
+
+	if (shader.is_null()) {
+		info.is_include = true;
+
+		sl.complete(code, info, r_options, calltip);
+		get_text_editor()->set_code_hint(calltip);
+		return;
+	}
+	_check_shader_mode();
+	info.functions = ShaderTypes::get_singleton()->get_functions(RenderingServer::ShaderMode(shader->get_mode()));
+	info.render_modes = ShaderTypes::get_singleton()->get_modes(RenderingServer::ShaderMode(shader->get_mode()));
+	info.shader_types = ShaderTypes::get_singleton()->get_types();
+
+	sl.complete(code, info, r_options, calltip);
+	get_text_editor()->set_code_hint(calltip);
+}
+
+void ShaderTextEditor::_validate_script() {
+	emit_signal(SNAME("script_changed")); // Ensure to notify that it changed, so it is applied
+
+	String code;
+
+	if (shader.is_valid()) {
+		_check_shader_mode();
+		code = shader->get_code();
+	} else {
+		code = shader_inc->get_code();
+	}
+
+	ShaderPreprocessor preprocessor;
+	String code_pp;
+	String error_pp;
+	List<ShaderPreprocessor::FilePosition> err_positions;
+	List<ShaderPreprocessor::Region> regions;
+	String filename;
+	if (shader.is_valid()) {
+		filename = shader->get_path();
+	} else if (shader_inc.is_valid()) {
+		filename = shader_inc->get_path();
+	}
+	last_compile_result = preprocessor.preprocess(code, filename, code_pp, &error_pp, &err_positions, &regions);
+
+	for (int i = 0; i < get_text_editor()->get_line_count(); i++) {
+		get_text_editor()->set_line_background_color(i, Color(0, 0, 0, 0));
+	}
+
+	syntax_highlighter->clear_disabled_branch_regions();
+	for (const ShaderPreprocessor::Region &region : regions) {
+		if (!region.enabled) {
+			if (filename != region.file) {
+				continue;
+			}
+			syntax_highlighter->add_disabled_branch_region(Point2i(region.from_line, region.to_line));
+		}
+	}
+
+	set_error("");
+	set_error_count(0);
+
+	if (last_compile_result != OK) {
+		//preprocessor error
+		ERR_FAIL_COND(err_positions.size() == 0);
+
+		String error_text = error_pp;
+		int error_line = err_positions.front()->get().line;
+		if (err_positions.size() == 1) {
+			// Error in main file
+			error_text = "error(" + itos(error_line) + "): " + error_text;
+		} else {
+			error_text = "error(" + itos(error_line) + ") in include " + err_positions.back()->get().file.get_file() + ":" + itos(err_positions.back()->get().line) + ": " + error_text;
+			set_error_count(err_positions.size() - 1);
+		}
+
+		set_error(error_text);
+		set_error_pos(error_line - 1, 0);
+		for (int i = 0; i < get_text_editor()->get_line_count(); i++) {
+			get_text_editor()->set_line_background_color(i, Color(0, 0, 0, 0));
+		}
+		get_text_editor()->set_line_background_color(error_line - 1, marked_line_color);
+
+		set_warning_count(0);
+
+	} else {
+		ShaderLanguage sl;
+
+		sl.enable_warning_checking(saved_warnings_enabled);
+		uint32_t flags = saved_warning_flags;
+		if (shader.is_null()) {
+			if (flags & ShaderWarning::UNUSED_CONSTANT) {
+				flags &= ~(ShaderWarning::UNUSED_CONSTANT);
+			}
+			if (flags & ShaderWarning::UNUSED_FUNCTION) {
+				flags &= ~(ShaderWarning::UNUSED_FUNCTION);
+			}
+			if (flags & ShaderWarning::UNUSED_STRUCT) {
+				flags &= ~(ShaderWarning::UNUSED_STRUCT);
+			}
+			if (flags & ShaderWarning::UNUSED_UNIFORM) {
+				flags &= ~(ShaderWarning::UNUSED_UNIFORM);
+			}
+			if (flags & ShaderWarning::UNUSED_VARYING) {
+				flags &= ~(ShaderWarning::UNUSED_VARYING);
+			}
+		}
+		sl.set_warning_flags(flags);
+
+		ShaderLanguage::ShaderCompileInfo info;
+		info.global_shader_uniform_type_func = _get_global_shader_uniform_type;
+
+		if (shader.is_null()) {
+			info.is_include = true;
+		} else {
+			Shader::Mode mode = shader->get_mode();
+			info.functions = ShaderTypes::get_singleton()->get_functions(RenderingServer::ShaderMode(mode));
+			info.render_modes = ShaderTypes::get_singleton()->get_modes(RenderingServer::ShaderMode(mode));
+			info.shader_types = ShaderTypes::get_singleton()->get_types();
+		}
+
+		code = code_pp;
+		//compiler error
+		last_compile_result = sl.compile(code, info);
+
+		if (last_compile_result != OK) {
+			String error_text;
+			int error_line;
+			Vector<ShaderLanguage::FilePosition> include_positions = sl.get_include_positions();
+			if (include_positions.size() > 1) {
+				//error is in an include
+				error_line = include_positions[0].line;
+				error_text = "error(" + itos(error_line) + ") in include " + include_positions[include_positions.size() - 1].file + ":" + itos(include_positions[include_positions.size() - 1].line) + ": " + sl.get_error_text();
+				set_error_count(include_positions.size() - 1);
+			} else {
+				error_line = sl.get_error_line();
+				error_text = "error(" + itos(error_line) + "): " + sl.get_error_text();
+				set_error_count(0);
+			}
+			set_error(error_text);
+			set_error_pos(error_line - 1, 0);
+			get_text_editor()->set_line_background_color(error_line - 1, marked_line_color);
+		} else {
+			set_error("");
+		}
+
+		if (warnings.size() > 0 || last_compile_result != OK) {
+			warnings_panel->clear();
+		}
+		warnings.clear();
+		for (List<ShaderWarning>::Element *E = sl.get_warnings_ptr(); E; E = E->next()) {
+			warnings.push_back(E->get());
+		}
+		if (warnings.size() > 0 && last_compile_result == OK) {
+			warnings.sort_custom<WarningsComparator>();
+			_update_warning_panel();
+		} else {
+			set_warning_count(0);
+		}
+	}
+
+	emit_signal(SNAME("script_validated"), last_compile_result == OK); // Notify that validation finished, to update the list of scripts
+}
+
+void ShaderTextEditor::_update_warning_panel() {
+	int warning_count = 0;
+
+	warnings_panel->push_table(2);
+	for (int i = 0; i < warnings.size(); i++) {
+		ShaderWarning &w = warnings[i];
+
+		if (warning_count == 0) {
+			if (saved_treat_warning_as_errors) {
+				String error_text = "error(" + itos(w.get_line()) + "): " + w.get_message() + " " + TTR("Warnings should be fixed to prevent errors.");
+				set_error_pos(w.get_line() - 1, 0);
+				set_error(error_text);
+				get_text_editor()->set_line_background_color(w.get_line() - 1, marked_line_color);
+			}
+		}
+
+		warning_count++;
+		int line = w.get_line();
+
+		// First cell.
+		warnings_panel->push_cell();
+		warnings_panel->push_color(warnings_panel->get_theme_color(SNAME("warning_color"), SNAME("Editor")));
+		if (line != -1) {
+			warnings_panel->push_meta(line - 1);
+			warnings_panel->add_text(TTR("Line") + " " + itos(line));
+			warnings_panel->add_text(" (" + w.get_name() + "):");
+			warnings_panel->pop(); // Meta goto.
+		} else {
+			warnings_panel->add_text(w.get_name() + ":");
+		}
+		warnings_panel->pop(); // Color.
+		warnings_panel->pop(); // Cell.
+
+		// Second cell.
+		warnings_panel->push_cell();
+		warnings_panel->add_text(w.get_message());
+		warnings_panel->pop(); // Cell.
+	}
+	warnings_panel->pop(); // Table.
+
+	set_warning_count(warning_count);
+}
+
+void ShaderTextEditor::_bind_methods() {
+	ADD_SIGNAL(MethodInfo("script_validated", PropertyInfo(Variant::BOOL, "valid")));
+}
+
+ShaderTextEditor::ShaderTextEditor() {
+	syntax_highlighter.instantiate();
+	get_text_editor()->set_syntax_highlighter(syntax_highlighter);
+}
+
+/*** SCRIPT EDITOR ******/
+
+void TextShaderEditor::_menu_option(int p_option) {
+	switch (p_option) {
+		case EDIT_UNDO: {
+			shader_editor->get_text_editor()->undo();
+		} break;
+		case EDIT_REDO: {
+			shader_editor->get_text_editor()->redo();
+		} break;
+		case EDIT_CUT: {
+			shader_editor->get_text_editor()->cut();
+		} break;
+		case EDIT_COPY: {
+			shader_editor->get_text_editor()->copy();
+		} break;
+		case EDIT_PASTE: {
+			shader_editor->get_text_editor()->paste();
+		} break;
+		case EDIT_SELECT_ALL: {
+			shader_editor->get_text_editor()->select_all();
+		} break;
+		case EDIT_MOVE_LINE_UP: {
+			shader_editor->move_lines_up();
+		} break;
+		case EDIT_MOVE_LINE_DOWN: {
+			shader_editor->move_lines_down();
+		} break;
+		case EDIT_INDENT: {
+			if (shader.is_null()) {
+				return;
+			}
+			shader_editor->get_text_editor()->indent_lines();
+		} break;
+		case EDIT_UNINDENT: {
+			if (shader.is_null()) {
+				return;
+			}
+			shader_editor->get_text_editor()->unindent_lines();
+		} break;
+		case EDIT_DELETE_LINE: {
+			shader_editor->delete_lines();
+		} break;
+		case EDIT_DUPLICATE_SELECTION: {
+			shader_editor->duplicate_selection();
+		} break;
+		case EDIT_TOGGLE_COMMENT: {
+			if (shader.is_null()) {
+				return;
+			}
+
+			shader_editor->toggle_inline_comment("//");
+
+		} break;
+		case EDIT_COMPLETE: {
+			shader_editor->get_text_editor()->request_code_completion();
+		} break;
+		case SEARCH_FIND: {
+			shader_editor->get_find_replace_bar()->popup_search();
+		} break;
+		case SEARCH_FIND_NEXT: {
+			shader_editor->get_find_replace_bar()->search_next();
+		} break;
+		case SEARCH_FIND_PREV: {
+			shader_editor->get_find_replace_bar()->search_prev();
+		} break;
+		case SEARCH_REPLACE: {
+			shader_editor->get_find_replace_bar()->popup_replace();
+		} break;
+		case SEARCH_GOTO_LINE: {
+			goto_line_dialog->popup_find_line(shader_editor->get_text_editor());
+		} break;
+		case BOOKMARK_TOGGLE: {
+			shader_editor->toggle_bookmark();
+		} break;
+		case BOOKMARK_GOTO_NEXT: {
+			shader_editor->goto_next_bookmark();
+		} break;
+		case BOOKMARK_GOTO_PREV: {
+			shader_editor->goto_prev_bookmark();
+		} break;
+		case BOOKMARK_REMOVE_ALL: {
+			shader_editor->remove_all_bookmarks();
+		} break;
+		case HELP_DOCS: {
+			OS::get_singleton()->shell_open(vformat("%s/tutorials/shaders/shader_reference/index.html", VERSION_DOCS_URL));
+		} break;
+	}
+	if (p_option != SEARCH_FIND && p_option != SEARCH_REPLACE && p_option != SEARCH_GOTO_LINE) {
+		shader_editor->get_text_editor()->call_deferred(SNAME("grab_focus"));
+	}
+}
+
+void TextShaderEditor::_notification(int p_what) {
+	switch (p_what) {
+		case NOTIFICATION_ENTER_TREE:
+		case NOTIFICATION_THEME_CHANGED: {
+			PopupMenu *popup = help_menu->get_popup();
+			popup->set_item_icon(popup->get_item_index(HELP_DOCS), get_theme_icon(SNAME("ExternalLink"), SNAME("EditorIcons")));
+		} break;
+
+		case NOTIFICATION_WM_WINDOW_FOCUS_IN: {
+			_check_for_external_edit();
+		} break;
+	}
+}
+
+void TextShaderEditor::_editor_settings_changed() {
+	shader_editor->update_editor_settings();
+
+	shader_editor->get_text_editor()->add_theme_constant_override("line_spacing", EditorSettings::get_singleton()->get("text_editor/appearance/whitespace/line_spacing"));
+	shader_editor->get_text_editor()->set_draw_breakpoints_gutter(false);
+	shader_editor->get_text_editor()->set_draw_executing_lines_gutter(false);
+}
+
+void TextShaderEditor::_show_warnings_panel(bool p_show) {
+	warnings_panel->set_visible(p_show);
+}
+
+void TextShaderEditor::_warning_clicked(Variant p_line) {
+	if (p_line.get_type() == Variant::INT) {
+		shader_editor->get_text_editor()->set_caret_line(p_line.operator int64_t());
+	}
+}
+
+void TextShaderEditor::_bind_methods() {
+	ClassDB::bind_method("_show_warnings_panel", &TextShaderEditor::_show_warnings_panel);
+	ClassDB::bind_method("_warning_clicked", &TextShaderEditor::_warning_clicked);
+
+	ADD_SIGNAL(MethodInfo("validation_changed"));
+}
+
+void TextShaderEditor::ensure_select_current() {
+}
+
+void TextShaderEditor::goto_line_selection(int p_line, int p_begin, int p_end) {
+	shader_editor->goto_line_selection(p_line, p_begin, p_end);
+}
+
+void TextShaderEditor::_project_settings_changed() {
+	_update_warnings(true);
+}
+
+void TextShaderEditor::_update_warnings(bool p_validate) {
+	bool changed = false;
+
+	bool warnings_enabled = GLOBAL_GET("debug/shader_language/warnings/enable").booleanize();
+	if (warnings_enabled != saved_warnings_enabled) {
+		saved_warnings_enabled = warnings_enabled;
+		changed = true;
+	}
+
+	bool treat_warning_as_errors = GLOBAL_GET("debug/shader_language/warnings/treat_warnings_as_errors").booleanize();
+	if (treat_warning_as_errors != saved_treat_warning_as_errors) {
+		saved_treat_warning_as_errors = treat_warning_as_errors;
+		changed = true;
+	}
+
+	bool update_flags = false;
+
+	for (int i = 0; i < ShaderWarning::WARNING_MAX; i++) {
+		ShaderWarning::Code code = (ShaderWarning::Code)i;
+		bool value = GLOBAL_GET("debug/shader_language/warnings/" + ShaderWarning::get_name_from_code(code).to_lower());
+
+		if (saved_warnings[code] != value) {
+			saved_warnings[code] = value;
+			update_flags = true;
+			changed = true;
+		}
+	}
+
+	if (update_flags) {
+		saved_warning_flags = (uint32_t)ShaderWarning::get_flags_from_codemap(saved_warnings);
+	}
+
+	if (p_validate && changed && shader_editor && shader_editor->get_edited_shader().is_valid()) {
+		shader_editor->validate_script();
+	}
+}
+
+void TextShaderEditor::_check_for_external_edit() {
+	bool use_autoreload = bool(EDITOR_GET("text_editor/behavior/files/auto_reload_scripts_on_external_change"));
+
+	if (shader_inc.is_valid()) {
+		if (shader_inc->get_last_modified_time() != FileAccess::get_modified_time(shader_inc->get_path())) {
+			if (use_autoreload) {
+				_reload_shader_include_from_disk();
+			} else {
+				disk_changed->call_deferred(SNAME("popup_centered"));
+			}
+		}
+		return;
+	}
+
+	if (shader.is_null() || shader->is_built_in()) {
+		return;
+	}
+
+	if (shader->get_last_modified_time() != FileAccess::get_modified_time(shader->get_path())) {
+		if (use_autoreload) {
+			_reload_shader_from_disk();
+		} else {
+			disk_changed->call_deferred(SNAME("popup_centered"));
+		}
+	}
+}
+
+void TextShaderEditor::_reload_shader_from_disk() {
+	Ref<Shader> rel_shader = ResourceLoader::load(shader->get_path(), shader->get_class(), ResourceFormatLoader::CACHE_MODE_IGNORE);
+	ERR_FAIL_COND(!rel_shader.is_valid());
+
+	shader_editor->set_block_shader_changed(true);
+	shader->set_code(rel_shader->get_code());
+	shader_editor->set_block_shader_changed(false);
+	shader->set_last_modified_time(rel_shader->get_last_modified_time());
+	shader_editor->reload_text();
+}
+
+void TextShaderEditor::_reload_shader_include_from_disk() {
+	Ref<ShaderInclude> rel_shader_include = ResourceLoader::load(shader_inc->get_path(), shader_inc->get_class(), ResourceFormatLoader::CACHE_MODE_IGNORE);
+	ERR_FAIL_COND(!rel_shader_include.is_valid());
+
+	shader_editor->set_block_shader_changed(true);
+	shader_inc->set_code(rel_shader_include->get_code());
+	shader_editor->set_block_shader_changed(false);
+	shader_inc->set_last_modified_time(rel_shader_include->get_last_modified_time());
+	shader_editor->reload_text();
+}
+
+void TextShaderEditor::_reload() {
+	if (shader.is_valid()) {
+		_reload_shader_from_disk();
+	} else if (shader_inc.is_valid()) {
+		_reload_shader_include_from_disk();
+	}
+}
+
+void TextShaderEditor::edit(const Ref<Shader> &p_shader) {
+	if (p_shader.is_null() || !p_shader->is_text_shader()) {
+		return;
+	}
+
+	if (shader == p_shader) {
+		return;
+	}
+
+	shader = p_shader;
+	shader_inc = Ref<ShaderInclude>();
+
+	shader_editor->set_edited_shader(shader);
+}
+
+void TextShaderEditor::edit(const Ref<ShaderInclude> &p_shader_inc) {
+	if (p_shader_inc.is_null()) {
+		return;
+	}
+
+	if (shader_inc == p_shader_inc) {
+		return;
+	}
+
+	shader_inc = p_shader_inc;
+	shader = Ref<Shader>();
+
+	shader_editor->set_edited_shader_include(p_shader_inc);
+}
+
+void TextShaderEditor::save_external_data(const String &p_str) {
+	if (shader.is_null() && shader_inc.is_null()) {
+		disk_changed->hide();
+		return;
+	}
+
+	apply_shaders();
+
+	Ref<Shader> edited_shader = shader_editor->get_edited_shader();
+	if (edited_shader.is_valid()) {
+		ResourceSaver::save(edited_shader);
+	}
+	if (shader.is_valid() && shader != edited_shader) {
+		ResourceSaver::save(shader);
+	}
+
+	Ref<ShaderInclude> edited_shader_inc = shader_editor->get_edited_shader_include();
+	if (edited_shader_inc.is_valid()) {
+		ResourceSaver::save(edited_shader_inc);
+	}
+	if (shader_inc.is_valid() && shader_inc != edited_shader_inc) {
+		ResourceSaver::save(shader_inc);
+	}
+	shader_editor->get_text_editor()->tag_saved_version();
+
+	disk_changed->hide();
+}
+
+void TextShaderEditor::validate_script() {
+	shader_editor->_validate_script();
+}
+
+bool TextShaderEditor::is_unsaved() const {
+	return shader_editor->get_text_editor()->get_saved_version() != shader_editor->get_text_editor()->get_version();
+}
+
+void TextShaderEditor::apply_shaders() {
+	String editor_code = shader_editor->get_text_editor()->get_text();
+	if (shader.is_valid()) {
+		String shader_code = shader->get_code();
+		if (shader_code != editor_code || dependencies_version != shader_editor->get_dependencies_version()) {
+			shader_editor->set_block_shader_changed(true);
+			shader->set_code(editor_code);
+			shader_editor->set_block_shader_changed(false);
+			shader->set_edited(true);
+		}
+	}
+	if (shader_inc.is_valid()) {
+		String shader_inc_code = shader_inc->get_code();
+		if (shader_inc_code != editor_code || dependencies_version != shader_editor->get_dependencies_version()) {
+			shader_editor->set_block_shader_changed(true);
+			shader_inc->set_code(editor_code);
+			shader_editor->set_block_shader_changed(false);
+			shader_inc->set_edited(true);
+		}
+	}
+
+	dependencies_version = shader_editor->get_dependencies_version();
+}
+
+void TextShaderEditor::_text_edit_gui_input(const Ref<InputEvent> &ev) {
+	Ref<InputEventMouseButton> mb = ev;
+
+	if (mb.is_valid()) {
+		if (mb->get_button_index() == MouseButton::RIGHT && mb->is_pressed()) {
+			CodeEdit *tx = shader_editor->get_text_editor();
+
+			Point2i pos = tx->get_line_column_at_pos(mb->get_global_position() - tx->get_global_position());
+			int row = pos.y;
+			int col = pos.x;
+			tx->set_move_caret_on_right_click_enabled(EditorSettings::get_singleton()->get("text_editor/behavior/navigation/move_caret_on_right_click"));
+
+			if (tx->is_move_caret_on_right_click_enabled()) {
+				if (tx->has_selection()) {
+					int from_line = tx->get_selection_from_line();
+					int to_line = tx->get_selection_to_line();
+					int from_column = tx->get_selection_from_column();
+					int to_column = tx->get_selection_to_column();
+
+					if (row < from_line || row > to_line || (row == from_line && col < from_column) || (row == to_line && col > to_column)) {
+						// Right click is outside the selected text
+						tx->deselect();
+					}
+				}
+				if (!tx->has_selection()) {
+					tx->set_caret_line(row, true, false);
+					tx->set_caret_column(col);
+				}
+			}
+			_make_context_menu(tx->has_selection(), get_local_mouse_position());
+		}
+	}
+
+	Ref<InputEventKey> k = ev;
+	if (k.is_valid() && k->is_pressed() && k->is_action("ui_menu", true)) {
+		CodeEdit *tx = shader_editor->get_text_editor();
+		tx->adjust_viewport_to_caret();
+		_make_context_menu(tx->has_selection(), (get_global_transform().inverse() * tx->get_global_transform()).xform(tx->get_caret_draw_pos()));
+		context_menu->grab_focus();
+	}
+}
+
+void TextShaderEditor::_update_bookmark_list() {
+	bookmarks_menu->clear();
+
+	bookmarks_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/toggle_bookmark"), BOOKMARK_TOGGLE);
+	bookmarks_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/remove_all_bookmarks"), BOOKMARK_REMOVE_ALL);
+	bookmarks_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/goto_next_bookmark"), BOOKMARK_GOTO_NEXT);
+	bookmarks_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/goto_previous_bookmark"), BOOKMARK_GOTO_PREV);
+
+	PackedInt32Array bookmark_list = shader_editor->get_text_editor()->get_bookmarked_lines();
+	if (bookmark_list.size() == 0) {
+		return;
+	}
+
+	bookmarks_menu->add_separator();
+
+	for (int i = 0; i < bookmark_list.size(); i++) {
+		String line = shader_editor->get_text_editor()->get_line(bookmark_list[i]).strip_edges();
+		// Limit the size of the line if too big.
+		if (line.length() > 50) {
+			line = line.substr(0, 50);
+		}
+
+		bookmarks_menu->add_item(String::num((int)bookmark_list[i] + 1) + " - \"" + line + "\"");
+		bookmarks_menu->set_item_metadata(-1, bookmark_list[i]);
+	}
+}
+
+void TextShaderEditor::_bookmark_item_pressed(int p_idx) {
+	if (p_idx < 4) { // Any item before the separator.
+		_menu_option(bookmarks_menu->get_item_id(p_idx));
+	} else {
+		shader_editor->goto_line(bookmarks_menu->get_item_metadata(p_idx));
+	}
+}
+
+void TextShaderEditor::_make_context_menu(bool p_selection, Vector2 p_position) {
+	context_menu->clear();
+	if (p_selection) {
+		context_menu->add_shortcut(ED_GET_SHORTCUT("ui_cut"), EDIT_CUT);
+		context_menu->add_shortcut(ED_GET_SHORTCUT("ui_copy"), EDIT_COPY);
+	}
+
+	context_menu->add_shortcut(ED_GET_SHORTCUT("ui_paste"), EDIT_PASTE);
+	context_menu->add_separator();
+	context_menu->add_shortcut(ED_GET_SHORTCUT("ui_text_select_all"), EDIT_SELECT_ALL);
+	context_menu->add_shortcut(ED_GET_SHORTCUT("ui_undo"), EDIT_UNDO);
+	context_menu->add_shortcut(ED_GET_SHORTCUT("ui_redo"), EDIT_REDO);
+
+	context_menu->add_separator();
+	context_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/indent"), EDIT_INDENT);
+	context_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/unindent"), EDIT_UNINDENT);
+	context_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/toggle_comment"), EDIT_TOGGLE_COMMENT);
+	context_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/toggle_bookmark"), BOOKMARK_TOGGLE);
+
+	context_menu->set_position(get_screen_position() + p_position);
+	context_menu->reset_size();
+	context_menu->popup();
+}
+
+TextShaderEditor::TextShaderEditor() {
+	GLOBAL_DEF("debug/shader_language/warnings/enable", true);
+	GLOBAL_DEF("debug/shader_language/warnings/treat_warnings_as_errors", false);
+	for (int i = 0; i < (int)ShaderWarning::WARNING_MAX; i++) {
+		GLOBAL_DEF("debug/shader_language/warnings/" + ShaderWarning::get_name_from_code((ShaderWarning::Code)i).to_lower(), true);
+	}
+	_update_warnings(false);
+
+	shader_editor = memnew(ShaderTextEditor);
+
+	shader_editor->connect("script_validated", callable_mp(this, &TextShaderEditor::_script_validated));
+
+	shader_editor->set_v_size_flags(SIZE_EXPAND_FILL);
+	shader_editor->add_theme_constant_override("separation", 0);
+	shader_editor->set_anchors_and_offsets_preset(Control::PRESET_FULL_RECT);
+
+	shader_editor->connect("show_warnings_panel", callable_mp(this, &TextShaderEditor::_show_warnings_panel));
+	shader_editor->connect("script_changed", callable_mp(this, &TextShaderEditor::apply_shaders));
+	EditorSettings::get_singleton()->connect("settings_changed", callable_mp(this, &TextShaderEditor::_editor_settings_changed));
+	ProjectSettingsEditor::get_singleton()->connect("confirmed", callable_mp(this, &TextShaderEditor::_project_settings_changed));
+
+	shader_editor->get_text_editor()->set_code_hint_draw_below(EditorSettings::get_singleton()->get("text_editor/completion/put_callhint_tooltip_below_current_line"));
+
+	shader_editor->get_text_editor()->set_symbol_lookup_on_click_enabled(true);
+	shader_editor->get_text_editor()->set_context_menu_enabled(false);
+	shader_editor->get_text_editor()->connect("gui_input", callable_mp(this, &TextShaderEditor::_text_edit_gui_input));
+
+	shader_editor->update_editor_settings();
+
+	context_menu = memnew(PopupMenu);
+	add_child(context_menu);
+	context_menu->connect("id_pressed", callable_mp(this, &TextShaderEditor::_menu_option));
+
+	VBoxContainer *main_container = memnew(VBoxContainer);
+	HBoxContainer *hbc = memnew(HBoxContainer);
+
+	edit_menu = memnew(MenuButton);
+	edit_menu->set_shortcut_context(this);
+	edit_menu->set_text(TTR("Edit"));
+	edit_menu->set_switch_on_hover(true);
+
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("ui_undo"), EDIT_UNDO);
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("ui_redo"), EDIT_REDO);
+	edit_menu->get_popup()->add_separator();
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("ui_cut"), EDIT_CUT);
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("ui_copy"), EDIT_COPY);
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("ui_paste"), EDIT_PASTE);
+	edit_menu->get_popup()->add_separator();
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("ui_text_select_all"), EDIT_SELECT_ALL);
+	edit_menu->get_popup()->add_separator();
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/move_up"), EDIT_MOVE_LINE_UP);
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/move_down"), EDIT_MOVE_LINE_DOWN);
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/indent"), EDIT_INDENT);
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/unindent"), EDIT_UNINDENT);
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/delete_line"), EDIT_DELETE_LINE);
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/toggle_comment"), EDIT_TOGGLE_COMMENT);
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/duplicate_selection"), EDIT_DUPLICATE_SELECTION);
+	edit_menu->get_popup()->add_separator();
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("ui_text_completion_query"), EDIT_COMPLETE);
+	edit_menu->get_popup()->connect("id_pressed", callable_mp(this, &TextShaderEditor::_menu_option));
+
+	search_menu = memnew(MenuButton);
+	search_menu->set_shortcut_context(this);
+	search_menu->set_text(TTR("Search"));
+	search_menu->set_switch_on_hover(true);
+
+	search_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/find"), SEARCH_FIND);
+	search_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/find_next"), SEARCH_FIND_NEXT);
+	search_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/find_previous"), SEARCH_FIND_PREV);
+	search_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/replace"), SEARCH_REPLACE);
+	search_menu->get_popup()->connect("id_pressed", callable_mp(this, &TextShaderEditor::_menu_option));
+
+	MenuButton *goto_menu = memnew(MenuButton);
+	goto_menu->set_shortcut_context(this);
+	goto_menu->set_text(TTR("Go To"));
+	goto_menu->set_switch_on_hover(true);
+	goto_menu->get_popup()->connect("id_pressed", callable_mp(this, &TextShaderEditor::_menu_option));
+
+	goto_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/goto_line"), SEARCH_GOTO_LINE);
+	goto_menu->get_popup()->add_separator();
+
+	bookmarks_menu = memnew(PopupMenu);
+	bookmarks_menu->set_name("Bookmarks");
+	goto_menu->get_popup()->add_child(bookmarks_menu);
+	goto_menu->get_popup()->add_submenu_item(TTR("Bookmarks"), "Bookmarks");
+	_update_bookmark_list();
+	bookmarks_menu->connect("about_to_popup", callable_mp(this, &TextShaderEditor::_update_bookmark_list));
+	bookmarks_menu->connect("index_pressed", callable_mp(this, &TextShaderEditor::_bookmark_item_pressed));
+
+	help_menu = memnew(MenuButton);
+	help_menu->set_text(TTR("Help"));
+	help_menu->set_switch_on_hover(true);
+	help_menu->get_popup()->add_item(TTR("Online Docs"), HELP_DOCS);
+	help_menu->get_popup()->connect("id_pressed", callable_mp(this, &TextShaderEditor::_menu_option));
+
+	add_child(main_container);
+	main_container->add_child(hbc);
+	hbc->add_child(search_menu);
+	hbc->add_child(edit_menu);
+	hbc->add_child(goto_menu);
+	hbc->add_child(help_menu);
+	hbc->add_theme_style_override("panel", EditorNode::get_singleton()->get_gui_base()->get_theme_stylebox(SNAME("ScriptEditorPanel"), SNAME("EditorStyles")));
+
+	VSplitContainer *editor_box = memnew(VSplitContainer);
+	main_container->add_child(editor_box);
+	editor_box->set_anchors_and_offsets_preset(Control::PRESET_FULL_RECT);
+	editor_box->set_v_size_flags(SIZE_EXPAND_FILL);
+	editor_box->add_child(shader_editor);
+
+	FindReplaceBar *bar = memnew(FindReplaceBar);
+	main_container->add_child(bar);
+	bar->hide();
+	shader_editor->set_find_replace_bar(bar);
+
+	warnings_panel = memnew(RichTextLabel);
+	warnings_panel->set_custom_minimum_size(Size2(0, 100 * EDSCALE));
+	warnings_panel->set_h_size_flags(SIZE_EXPAND_FILL);
+	warnings_panel->set_meta_underline(true);
+	warnings_panel->set_selection_enabled(true);
+	warnings_panel->set_focus_mode(FOCUS_CLICK);
+	warnings_panel->hide();
+	warnings_panel->connect("meta_clicked", callable_mp(this, &TextShaderEditor::_warning_clicked));
+	editor_box->add_child(warnings_panel);
+	shader_editor->set_warnings_panel(warnings_panel);
+
+	goto_line_dialog = memnew(GotoLineDialog);
+	add_child(goto_line_dialog);
+
+	disk_changed = memnew(ConfirmationDialog);
+
+	VBoxContainer *vbc = memnew(VBoxContainer);
+	disk_changed->add_child(vbc);
+
+	Label *dl = memnew(Label);
+	dl->set_text(TTR("This shader has been modified on disk.\nWhat action should be taken?"));
+	vbc->add_child(dl);
+
+	disk_changed->connect("confirmed", callable_mp(this, &TextShaderEditor::_reload));
+	disk_changed->set_ok_button_text(TTR("Reload"));
+
+	disk_changed->add_button(TTR("Resave"), !DisplayServer::get_singleton()->get_swap_cancel_ok(), "resave");
+	disk_changed->connect("custom_action", callable_mp(this, &TextShaderEditor::save_external_data));
+
+	add_child(disk_changed);
+
+	_editor_settings_changed();
+}
diff --git a/editor/plugins/text_shader_editor.h b/editor/plugins/text_shader_editor.h
new file mode 100644
index 0000000000..abeaff1fff
--- /dev/null
+++ b/editor/plugins/text_shader_editor.h
@@ -0,0 +1,199 @@
+/*************************************************************************/
+/*  text_shader_editor.h                                                 */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef TEXT_SHADER_EDITOR_H
+#define TEXT_SHADER_EDITOR_H
+
+#include "editor/code_editor.h"
+#include "scene/gui/menu_button.h"
+#include "scene/gui/panel_container.h"
+#include "scene/gui/rich_text_label.h"
+#include "servers/rendering/shader_warnings.h"
+
+class GDShaderSyntaxHighlighter : public CodeHighlighter {
+	GDCLASS(GDShaderSyntaxHighlighter, CodeHighlighter)
+
+private:
+	Vector<Point2i> disabled_branch_regions;
+	Color disabled_branch_color;
+
+public:
+	virtual Dictionary _get_line_syntax_highlighting_impl(int p_line) override;
+
+	void add_disabled_branch_region(const Point2i &p_region);
+	void clear_disabled_branch_regions();
+	void set_disabled_branch_color(const Color &p_color);
+};
+
+class ShaderTextEditor : public CodeTextEditor {
+	GDCLASS(ShaderTextEditor, CodeTextEditor);
+
+	Color marked_line_color = Color(1, 1, 1);
+
+	struct WarningsComparator {
+		_ALWAYS_INLINE_ bool operator()(const ShaderWarning &p_a, const ShaderWarning &p_b) const { return (p_a.get_line() < p_b.get_line()); }
+	};
+
+	Ref<GDShaderSyntaxHighlighter> syntax_highlighter;
+	RichTextLabel *warnings_panel = nullptr;
+	Ref<Shader> shader;
+	Ref<ShaderInclude> shader_inc;
+	List<ShaderWarning> warnings;
+	Error last_compile_result = Error::OK;
+
+	void _check_shader_mode();
+	void _update_warning_panel();
+
+	bool block_shader_changed = false;
+	void _shader_changed();
+
+	uint32_t dependencies_version = 0; // Incremented if deps changed
+
+protected:
+	void _notification(int p_what);
+	static void _bind_methods();
+	virtual void _load_theme_settings() override;
+
+	virtual void _code_complete_script(const String &p_code, List<ScriptLanguage::CodeCompletionOption> *r_options) override;
+
+public:
+	void set_block_shader_changed(bool p_block) { block_shader_changed = p_block; }
+	uint32_t get_dependencies_version() const { return dependencies_version; }
+
+	virtual void _validate_script() override;
+
+	void reload_text();
+	void set_warnings_panel(RichTextLabel *p_warnings_panel);
+
+	Ref<Shader> get_edited_shader() const;
+	Ref<ShaderInclude> get_edited_shader_include() const;
+
+	void set_edited_shader(const Ref<Shader> &p_shader);
+	void set_edited_shader(const Ref<Shader> &p_shader, const String &p_code);
+	void set_edited_shader_include(const Ref<ShaderInclude> &p_include);
+	void set_edited_shader_include(const Ref<ShaderInclude> &p_include, const String &p_code);
+	void set_edited_code(const String &p_code);
+
+	ShaderTextEditor();
+};
+
+class TextShaderEditor : public MarginContainer {
+	GDCLASS(TextShaderEditor, MarginContainer);
+
+	enum {
+		EDIT_UNDO,
+		EDIT_REDO,
+		EDIT_CUT,
+		EDIT_COPY,
+		EDIT_PASTE,
+		EDIT_SELECT_ALL,
+		EDIT_MOVE_LINE_UP,
+		EDIT_MOVE_LINE_DOWN,
+		EDIT_INDENT,
+		EDIT_UNINDENT,
+		EDIT_DELETE_LINE,
+		EDIT_DUPLICATE_SELECTION,
+		EDIT_TOGGLE_COMMENT,
+		EDIT_COMPLETE,
+		SEARCH_FIND,
+		SEARCH_FIND_NEXT,
+		SEARCH_FIND_PREV,
+		SEARCH_REPLACE,
+		SEARCH_GOTO_LINE,
+		BOOKMARK_TOGGLE,
+		BOOKMARK_GOTO_NEXT,
+		BOOKMARK_GOTO_PREV,
+		BOOKMARK_REMOVE_ALL,
+		HELP_DOCS,
+	};
+
+	MenuButton *edit_menu = nullptr;
+	MenuButton *search_menu = nullptr;
+	PopupMenu *bookmarks_menu = nullptr;
+	MenuButton *help_menu = nullptr;
+	PopupMenu *context_menu = nullptr;
+	RichTextLabel *warnings_panel = nullptr;
+	uint64_t idle = 0;
+
+	GotoLineDialog *goto_line_dialog = nullptr;
+	ConfirmationDialog *erase_tab_confirm = nullptr;
+	ConfirmationDialog *disk_changed = nullptr;
+
+	ShaderTextEditor *shader_editor = nullptr;
+	bool compilation_success = true;
+
+	void _menu_option(int p_option);
+	mutable Ref<Shader> shader;
+	mutable Ref<ShaderInclude> shader_inc;
+
+	void _editor_settings_changed();
+	void _project_settings_changed();
+
+	void _check_for_external_edit();
+	void _reload_shader_from_disk();
+	void _reload_shader_include_from_disk();
+	void _reload();
+	void _show_warnings_panel(bool p_show);
+	void _warning_clicked(Variant p_line);
+	void _update_warnings(bool p_validate);
+
+	void _script_validated(bool p_valid) {
+		compilation_success = p_valid;
+		emit_signal(SNAME("validation_changed"));
+	}
+
+	uint32_t dependencies_version = 0xFFFFFFFF;
+
+protected:
+	void _notification(int p_what);
+	static void _bind_methods();
+	void _make_context_menu(bool p_selection, Vector2 p_position);
+	void _text_edit_gui_input(const Ref<InputEvent> &p_ev);
+
+	void _update_bookmark_list();
+	void _bookmark_item_pressed(int p_idx);
+
+public:
+	bool was_compilation_successful() const { return compilation_success; }
+	void apply_shaders();
+	void ensure_select_current();
+	void edit(const Ref<Shader> &p_shader);
+	void edit(const Ref<ShaderInclude> &p_shader_inc);
+	void goto_line_selection(int p_line, int p_begin, int p_end);
+	void save_external_data(const String &p_str = "");
+	void validate_script();
+	bool is_unsaved() const;
+
+	virtual Size2 get_minimum_size() const override { return Size2(0, 200); }
+
+	TextShaderEditor();
+};
+
+#endif // TEXT_SHADER_EDITOR_H