[4.3] Cherry-picks for the 4.3 (4.3.1) branch - 1st enhancements batch

.github/workflows/android_builds.yml

@@ -14,7 +14,7 @@ concurrency:
 
 jobs:
   build-android:
-    runs-on: "ubuntu-20.04"
+    runs-on: ubuntu-24.04
     name: ${{ matrix.name }}
     strategy:
       fail-fast: false

.github/workflows/godot_cpp_test.yml

@@ -15,8 +15,8 @@ concurrency:
 
 jobs:
   godot-cpp-tests:
-    runs-on: "ubuntu-20.04"
-    name: "Build and test Godot CPP"
+    runs-on: ubuntu-24.04
+    name: Build and test Godot CPP
     steps:
       - uses: actions/checkout@v4
         with:

.github/workflows/linux_builds.yml

@@ -17,7 +17,8 @@ concurrency:
 
 jobs:
   build-linux:
-    runs-on: "ubuntu-20.04"
+    # If unspecified, stay one LTS before latest to increase portability of Linux artifacts.
+    runs-on: ${{ matrix.os || 'ubuntu-22.04' }}
     name: ${{ matrix.name }}
     strategy:
       fail-fast: false
@@ -60,6 +61,8 @@ jobs:
             artifact: false
             # Test our oldest supported SCons/Python versions on one arbitrary editor build.
             legacy-scons: true
+            # Python 3.6 unavailable on 22.04.
+            os: ubuntu-20.04
 
           - name: Editor with ThreadSanitizer (target=editor, tests=yes, dev_build=yes, use_tsan=yes, use_llvm=yes, linker=lld)
             cache-name: linux-editor-thread-sanitizer
@@ -99,7 +102,7 @@ jobs:
         run: |
           sudo rm -f /etc/apt/sources.list.d/microsoft-prod.list
           sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys EB8B81E14DA65431D7504EA8F63F0F2B90935439
-          sudo add-apt-repository "deb https://ppa.launchpadcontent.net/kisak/turtle/ubuntu focal main"
+          sudo add-apt-repository "deb https://ppa.launchpadcontent.net/kisak/turtle/ubuntu ${{ matrix.os == 'ubuntu-20.04' && 'focal' || 'jammy' }} main"
           sudo apt-get install -qq mesa-vulkan-drivers
 
       # TODO: Figure out somehow how to embed this one.

.github/workflows/static_checks.yml

@@ -9,7 +9,7 @@ concurrency:
 jobs:
   static-checks:
     name: Code style, file formatting, and docs
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
       - name: Checkout
         uses: actions/checkout@v4

.github/workflows/web_builds.yml

@@ -16,7 +16,7 @@ concurrency:
 
 jobs:
   web-template:
-    runs-on: "ubuntu-22.04"
+    runs-on: ubuntu-24.04
     name: ${{ matrix.name }}
     strategy:
       fail-fast: false

SConstruct

@@ -496,14 +496,19 @@ else:
     # Disable assert() for production targets (only used in thirdparty code).
     env.Append(CPPDEFINES=["NDEBUG"])
 
+# This is not part of fast_unsafe because the only downside it has compared to
+# the default is that SCons won't mark files that were changed in the last second
+# as different. This is unlikely to be a problem in any real situation as just booting
+# up scons takes more than that time.
+# Renamed to `content-timestamp` in SCons >= 4.2, keeping MD5 for compat.
+env.Decider("MD5-timestamp")
+
 # SCons speed optimization controlled by the `fast_unsafe` option, which provide
 # more than 10 s speed up for incremental rebuilds.
 # Unsafe as they reduce the certainty of rebuilding all changed files, so it's
 # enabled by default for `debug` builds, and can be overridden from command line.
 # Ref: https://github.com/SCons/scons/wiki/GoFastButton
 if methods.get_cmdline_bool("fast_unsafe", env.dev_build):
-    # Renamed to `content-timestamp` in SCons >= 4.2, keeping MD5 for compat.
-    env.Decider("MD5-timestamp")
     env.SetOption("implicit_cache", 1)
     env.SetOption("max_drift", 60)
 

core/SCsub

@@ -98,6 +98,8 @@ if env["builtin_zlib"]:
     env.Prepend(CPPPATH=[thirdparty_zlib_dir])
     if env.dev_build:
         env_thirdparty.Append(CPPDEFINES=["ZLIB_DEBUG"])
+        # Affects headers so it should also be defined for Godot code
+        env.Append(CPPDEFINES=["ZLIB_DEBUG"])
 
     env_thirdparty.add_source_files(thirdparty_obj, thirdparty_zlib_sources)
 

core/core_constants.cpp

@@ -678,6 +678,7 @@ void register_global_constants() {
 	BIND_CORE_ENUM_CONSTANT(PROPERTY_HINT_NODE_TYPE);
 	BIND_CORE_ENUM_CONSTANT(PROPERTY_HINT_HIDE_QUATERNION_EDIT);
 	BIND_CORE_ENUM_CONSTANT(PROPERTY_HINT_PASSWORD);
+	BIND_CORE_ENUM_CONSTANT(PROPERTY_HINT_ONESHOT);
 	BIND_CORE_ENUM_CONSTANT(PROPERTY_HINT_MAX);
 
 	BIND_CORE_BITFIELD_FLAG(PROPERTY_USAGE_NONE);

core/io/file_access.cpp

@@ -61,11 +61,9 @@ bool FileAccess::exists(const String &p_name) {
 		return true;
 	}
 
-	Ref<FileAccess> f = open(p_name, READ);
-	if (f.is_null()) {
-		return false;
-	}
-	return true;
+	// Using file_exists because it's faster than trying to open the file.
+	Ref<FileAccess> ret = create_for_path(p_name);
+	return ret->file_exists(p_name);
 }
 
 void FileAccess::_set_access_type(AccessType p_access) {

core/io/http_client_tcp.cpp

@@ -664,15 +664,16 @@ PackedByteArray HTTPClientTCP::read_response_body_chunk() {
 				chunk_left -= rec;
 
 				if (chunk_left == 0) {
-					if (chunk[chunk.size() - 2] != '\r' || chunk[chunk.size() - 1] != '\n') {
+					const int chunk_size = chunk.size();
+					if (chunk[chunk_size - 2] != '\r' || chunk[chunk_size - 1] != '\n') {
 						ERR_PRINT("HTTP Invalid chunk terminator (not \\r\\n)");
 						status = STATUS_CONNECTION_ERROR;
 						break;
 					}
 
-					ret.resize(chunk.size() - 2);
+					ret.resize(chunk_size - 2);
 					uint8_t *w = ret.ptrw();
-					memcpy(w, chunk.ptr(), chunk.size() - 2);
+					memcpy(w, chunk.ptr(), chunk_size - 2);
 					chunk.clear();
 				}
 

core/io/packet_peer_udp.cpp

@@ -107,6 +107,19 @@ Error PacketPeerUDP::get_packet(const uint8_t **r_buffer, int &r_buffer_size) {
 		return ERR_UNAVAILABLE;
 	}
 
+/* Bogus GCC warning here:
+ * In member function 'int RingBuffer<T>::read(T*, int, bool) [with T = unsigned char]',
+ *     inlined from 'virtual Error PacketPeerUDP::get_packet(const uint8_t**, int&)' at core/io/packet_peer_udp.cpp:112:9,
+ *     inlined from 'virtual Error PacketPeerUDP::get_packet(const uint8_t**, int&)' at core/io/packet_peer_udp.cpp:99:7:
+ * Error: ./core/ring_buffer.h:68:46: error: writing 1 byte into a region of size 0 [-Werror=stringop-overflow=]
+ *   68 |                                 p_buf[dst++] = read[pos + i];
+ *      |                                 ~~~~~~~~~~~~~^~~~~~~
+ */
+#if defined(__GNUC__) && !defined(__clang__)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic warning "-Wstringop-overflow=0"
+#endif
+
 	uint32_t size = 0;
 	uint8_t ipv6[16] = {};
 	rb.read(ipv6, 16, true);
@@ -117,6 +130,11 @@ Error PacketPeerUDP::get_packet(const uint8_t **r_buffer, int &r_buffer_size) {
 	--queue_count;
 	*r_buffer = packet_buffer;
 	r_buffer_size = size;
+
+#if defined(__GNUC__) && !defined(__clang__)
+#pragma GCC diagnostic pop
+#endif
+
 	return OK;
 }
 

core/io/resource_importer.cpp

@@ -366,6 +366,23 @@ ResourceUID::ID ResourceFormatImporter::get_resource_uid(const String &p_path) c
 	return pat.uid;
 }
 
+Error ResourceFormatImporter::get_resource_import_info(const String &p_path, StringName &r_type, ResourceUID::ID &r_uid, String &r_import_group_file) const {
+	PathAndType pat;
+	Error err = _get_path_and_type(p_path, pat);
+
+	if (err == OK) {
+		r_type = pat.type;
+		r_uid = pat.uid;
+		r_import_group_file = pat.group_file;
+	} else {
+		r_type = "";
+		r_uid = ResourceUID::INVALID_ID;
+		r_import_group_file = "";
+	}
+
+	return err;
+}
+
 Variant ResourceFormatImporter::get_resource_metadata(const String &p_path) const {
 	PathAndType pat;
 	Error err = _get_path_and_type(p_path, pat);

core/io/resource_importer.h

@@ -95,6 +95,7 @@ class ResourceFormatImporter : public ResourceFormatLoader {
 	String get_import_settings_hash() const;
 
 	String get_import_base_path(const String &p_for_file) const;
+	Error get_resource_import_info(const String &p_path, StringName &r_type, ResourceUID::ID &r_uid, String &r_import_group_file) const;
 	ResourceFormatImporter();
 };
 

core/io/resource_loader.cpp

@@ -1203,36 +1203,39 @@ String ResourceLoader::_path_remap(const String &p_path, bool *r_translation_rem
 		new_path = path_remaps[new_path];
 	} else {
 		// Try file remap.
-		Error err;
-		Ref<FileAccess> f = FileAccess::open(new_path + ".remap", FileAccess::READ, &err);
-		if (f.is_valid()) {
-			VariantParser::StreamFile stream;
-			stream.f = f;
-
-			String assign;
-			Variant value;
-			VariantParser::Tag next_tag;
-
-			int lines = 0;
-			String error_text;
-			while (true) {
-				assign = Variant();
-				next_tag.fields.clear();
-				next_tag.name = String();
-
-				err = VariantParser::parse_tag_assign_eof(&stream, lines, error_text, next_tag, assign, value, nullptr, true);
-				if (err == ERR_FILE_EOF) {
-					break;
-				} else if (err != OK) {
-					ERR_PRINT("Parse error: " + p_path + ".remap:" + itos(lines) + " error: " + error_text + ".");
-					break;
-				}
+		// Usually, there's no remap file and FileAccess::exists() is faster than FileAccess::open().
+		if (FileAccess::exists(new_path + ".remap")) {
+			Error err;
+			Ref<FileAccess> f = FileAccess::open(new_path + ".remap", FileAccess::READ, &err);
+			if (f.is_valid()) {
+				VariantParser::StreamFile stream;
+				stream.f = f;
+
+				String assign;
+				Variant value;
+				VariantParser::Tag next_tag;
+
+				int lines = 0;
+				String error_text;
+				while (true) {
+					assign = Variant();
+					next_tag.fields.clear();
+					next_tag.name = String();
+
+					err = VariantParser::parse_tag_assign_eof(&stream, lines, error_text, next_tag, assign, value, nullptr, true);
+					if (err == ERR_FILE_EOF) {
+						break;
+					} else if (err != OK) {
+						ERR_PRINT("Parse error: " + p_path + ".remap:" + itos(lines) + " error: " + error_text + ".");
+						break;
+					}
 
-				if (assign == "path") {
-					new_path = value;
-					break;
-				} else if (next_tag.name != "remap") {
-					break;
+					if (assign == "path") {
+						new_path = value;
+						break;
+					} else if (next_tag.name != "remap") {
+						break;
+					}
 				}
 			}
 		}

core/io/stream_peer.cpp

@@ -225,13 +225,13 @@ void StreamPeer::put_var(const Variant &p_variant, bool p_full_objects) {
 }
 
 uint8_t StreamPeer::get_u8() {
-	uint8_t buf[1];
+	uint8_t buf[1] = {};
 	get_data(buf, 1);
 	return buf[0];
 }
 
 int8_t StreamPeer::get_8() {
-	uint8_t buf[1];
+	uint8_t buf[1] = {};
 	get_data(buf, 1);
 	return buf[0];
 }

core/object/object.h

@@ -88,6 +88,9 @@ enum PropertyHint {
 	PROPERTY_HINT_HIDE_QUATERNION_EDIT, /// Only Node3D::transform should hide the quaternion editor.
 	PROPERTY_HINT_PASSWORD,
 	PROPERTY_HINT_LAYERS_AVOIDANCE,
+	PROPERTY_HINT_DICTIONARY_TYPE,
+	PROPERTY_HINT_TOOL_BUTTON,
+	PROPERTY_HINT_ONESHOT, ///< the property will be changed by self after setting, such as AudioStreamPlayer.playing, Particles.emitting.
 	PROPERTY_HINT_MAX,
 };
 

core/object/undo_redo.cpp

@@ -50,7 +50,7 @@ void UndoRedo::Operation::delete_reference() {
 	}
 }
 
-void UndoRedo::_discard_redo() {
+void UndoRedo::discard_redo() {
 	if (current_action == actions.size() - 1) {
 		return;
 	}
@@ -91,7 +91,7 @@ void UndoRedo::create_action(const String &p_name, MergeMode p_mode, bool p_back
 	uint64_t ticks = OS::get_singleton()->get_ticks_msec();
 
 	if (action_level == 0) {
-		_discard_redo();
+		discard_redo();
 
 		// Check if the merge operation is valid
 		if (p_mode != MERGE_DISABLE && actions.size() && actions[actions.size() - 1].name == p_name && actions[actions.size() - 1].backward_undo_ops == p_backward_undo_ops && actions[actions.size() - 1].last_tick + 800 > ticks) {
@@ -290,7 +290,7 @@ void UndoRedo::end_force_keep_in_merge_ends() {
 }
 
 void UndoRedo::_pop_history_tail() {
-	_discard_redo();
+	discard_redo();
 
 	if (!actions.size()) {
 		return;
@@ -457,7 +457,7 @@ String UndoRedo::get_action_name(int p_id) {
 
 void UndoRedo::clear_history(bool p_increase_version) {
 	ERR_FAIL_COND(action_level > 0);
-	_discard_redo();
+	discard_redo();
 
 	while (actions.size()) {
 		_pop_history_tail();

core/object/undo_redo.h

@@ -131,6 +131,7 @@ class UndoRedo : public Object {
 	int get_current_action();
 	String get_action_name(int p_id);
 	void clear_history(bool p_increase_version = true);
+	void discard_redo();
 
 	bool has_undo() const;
 	bool has_redo() const;

core/object/worker_thread_pool.cpp

@@ -706,6 +706,8 @@ void WorkerThreadPool::init(int p_thread_count, float p_low_priority_task_ratio)
 
 	max_low_priority_threads = CLAMP(p_thread_count * p_low_priority_task_ratio, 1, p_thread_count - 1);
 
+	print_verbose(vformat("WorkerThreadPool: %d threads, %d max low-priority.", p_thread_count, max_low_priority_threads));
+
 	threads.resize(p_thread_count);
 
 	for (uint32_t i = 0; i < threads.size(); i++) {

core/os/thread.cpp

@@ -40,8 +40,8 @@
 #include "core/templates/safe_refcount.h"
 
 SafeNumeric<uint64_t> Thread::id_counter(1); // The first value after .increment() is 2, hence by default the main thread ID should be 1.
+thread_local Thread::ID Thread::caller_id = Thread::id_counter.increment();
 
-thread_local Thread::ID Thread::caller_id = Thread::UNASSIGNED_ID;
 #endif
 
 Thread::PlatformFunctions Thread::platform_functions;

core/os/thread.h

@@ -109,24 +109,22 @@ class Thread {
 	static PlatformFunctions platform_functions;
 
 	ID id = UNASSIGNED_ID;
+
 	static SafeNumeric<uint64_t> id_counter;
 	static thread_local ID caller_id;
 	THREADING_NAMESPACE::thread thread;
 
 	static void callback(ID p_caller_id, const Settings &p_settings, Thread::Callback p_callback, void *p_userdata);
 
 	static void make_main_thread() { caller_id = MAIN_ID; }
-	static void release_main_thread() { caller_id = UNASSIGNED_ID; }
+	static void release_main_thread() { caller_id = id_counter.increment(); }
 
 public:
 	static void _set_platform_functions(const PlatformFunctions &p_functions);
 
 	_FORCE_INLINE_ ID get_id() const { return id; }
 	// get the ID of the caller thread
 	_FORCE_INLINE_ static ID get_caller_id() {
-		if (unlikely(caller_id == UNASSIGNED_ID)) {
-			caller_id = id_counter.increment();
-		}
 		return caller_id;
 	}
 	// get the ID of the main thread