Renaming of servers for coherency.

VisualServer -> RenderingServer
PhysicsServer -> PhysicsServer3D
Physics2DServer -> PhysicsServer2D
NavigationServer -> NavigationServer3D
Navigation2DServer -> NavigationServer2D

Also renamed corresponding files.

servers/rendering/rendering_server_wrap_mt.cpp

@@ -0,0 +1,197 @@
+/*************************************************************************/
+/*  rendering_server_wrap_mt.cpp                                            */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2020 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 "rendering_server_wrap_mt.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
+#include "servers/display_server.h"
+
+void RenderingServerWrapMT::thread_exit() {
+
+	exit = true;
+}
+
+void RenderingServerWrapMT::thread_draw(bool p_swap_buffers, double frame_step) {
+
+	if (!atomic_decrement(&draw_pending)) {
+
+		rendering_server->draw(p_swap_buffers, frame_step);
+	}
+}
+
+void RenderingServerWrapMT::thread_flush() {
+
+	atomic_decrement(&draw_pending);
+}
+
+void RenderingServerWrapMT::_thread_callback(void *_instance) {
+
+	RenderingServerWrapMT *vsmt = reinterpret_cast<RenderingServerWrapMT *>(_instance);
+
+	vsmt->thread_loop();
+}
+
+void RenderingServerWrapMT::thread_loop() {
+
+	server_thread = Thread::get_caller_id();
+
+	DisplayServer::get_singleton()->make_rendering_thread();
+
+	rendering_server->init();
+
+	exit = false;
+	draw_thread_up = true;
+	while (!exit) {
+		// flush commands one by one, until exit is requested
+		command_queue.wait_and_flush_one();
+	}
+
+	command_queue.flush_all(); // flush all
+
+	rendering_server->finish();
+}
+
+/* EVENT QUEUING */
+
+void RenderingServerWrapMT::sync() {
+
+	if (create_thread) {
+
+		atomic_increment(&draw_pending);
+		command_queue.push_and_sync(this, &RenderingServerWrapMT::thread_flush);
+	} else {
+
+		command_queue.flush_all(); //flush all pending from other threads
+	}
+}
+
+void RenderingServerWrapMT::draw(bool p_swap_buffers, double frame_step) {
+
+	if (create_thread) {
+
+		atomic_increment(&draw_pending);
+		command_queue.push(this, &RenderingServerWrapMT::thread_draw, p_swap_buffers, frame_step);
+	} else {
+
+		rendering_server->draw(p_swap_buffers, frame_step);
+	}
+}
+
+void RenderingServerWrapMT::init() {
+
+	if (create_thread) {
+
+		print_verbose("RenderingServerWrapMT: Creating render thread");
+		DisplayServer::get_singleton()->release_rendering_thread();
+		if (create_thread) {
+			thread = Thread::create(_thread_callback, this);
+			print_verbose("RenderingServerWrapMT: Starting render thread");
+		}
+		while (!draw_thread_up) {
+			OS::get_singleton()->delay_usec(1000);
+		}
+		print_verbose("RenderingServerWrapMT: Finished render thread");
+	} else {
+
+		rendering_server->init();
+	}
+}
+
+void RenderingServerWrapMT::finish() {
+
+	if (thread) {
+
+		command_queue.push(this, &RenderingServerWrapMT::thread_exit);
+		Thread::wait_to_finish(thread);
+		memdelete(thread);
+
+		thread = NULL;
+	} else {
+		rendering_server->finish();
+	}
+
+	sky_free_cached_ids();
+	shader_free_cached_ids();
+	material_free_cached_ids();
+	mesh_free_cached_ids();
+	multimesh_free_cached_ids();
+	immediate_free_cached_ids();
+	skeleton_free_cached_ids();
+	directional_light_free_cached_ids();
+	omni_light_free_cached_ids();
+	spot_light_free_cached_ids();
+	reflection_probe_free_cached_ids();
+	gi_probe_free_cached_ids();
+	lightmap_capture_free_cached_ids();
+	particles_free_cached_ids();
+	camera_free_cached_ids();
+	viewport_free_cached_ids();
+	environment_free_cached_ids();
+	camera_effects_free_cached_ids();
+	scenario_free_cached_ids();
+	instance_free_cached_ids();
+	canvas_free_cached_ids();
+	canvas_item_free_cached_ids();
+	canvas_light_occluder_free_cached_ids();
+	canvas_occluder_polygon_free_cached_ids();
+}
+
+void RenderingServerWrapMT::set_use_vsync_callback(bool p_enable) {
+
+	singleton_mt->call_set_use_vsync(p_enable);
+}
+
+RenderingServerWrapMT *RenderingServerWrapMT::singleton_mt = NULL;
+
+RenderingServerWrapMT::RenderingServerWrapMT(RenderingServer *p_contained, bool p_create_thread) :
+		command_queue(p_create_thread) {
+
+	singleton_mt = this;
+	DisplayServer::switch_vsync_function = set_use_vsync_callback; //as this goes to another thread, make sure it goes properly
+
+	rendering_server = p_contained;
+	create_thread = p_create_thread;
+	thread = NULL;
+	draw_pending = 0;
+	draw_thread_up = false;
+	pool_max_size = GLOBAL_GET("memory/limits/multithreaded_server/rid_pool_prealloc");
+
+	if (!p_create_thread) {
+		server_thread = Thread::get_caller_id();
+	} else {
+		server_thread = 0;
+	}
+}
+
+RenderingServerWrapMT::~RenderingServerWrapMT() {
+
+	memdelete(rendering_server);
+	//finish();
+}