iOS: Vulkan support

Implemented Vulkan Support.
Use DisplayServer for rendering and input handling
Use single view for rendering in both GLES2 (not supported yet) and Vulkan
Use @available checks where it's required (otherwise compiler would fail compilation)
Simulator checks

1 files changed, 202 insertions, 0 deletions

diff --git a/platform/iphone/display_server_iphone.h b/platform/iphone/display_server_iphone.h
new file mode 100644
index 0000000000..e82cef4122
--- /dev/null
+++ b/platform/iphone/display_server_iphone.h
@@ -0,0 +1,202 @@
+/*************************************************************************/
+/*  display_server_iphone.h                                              */
+/*************************************************************************/
+/*                       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.                */
+/*************************************************************************/
+
+#ifndef display_server_iphone_h
+#define display_server_iphone_h
+
+#include "core/input/input.h"
+#include "servers/display_server.h"
+
+#if defined(VULKAN_ENABLED)
+#include "drivers/vulkan/rendering_device_vulkan.h"
+#include "servers/rendering/rasterizer_rd/rasterizer_rd.h"
+
+#include "vulkan_context_iphone.h"
+
+#import <QuartzCore/CAMetalLayer.h>
+#include <vulkan/vulkan_metal.h>
+#endif
+
+class DisplayServerIPhone : public DisplayServer {
+	GDCLASS(DisplayServerIPhone, DisplayServer)
+
+	_THREAD_SAFE_CLASS_
+
+#if defined(VULKAN_ENABLED)
+	VulkanContextIPhone *context_vulkan;
+	RenderingDeviceVulkan *rendering_device_vulkan;
+#endif
+
+	DisplayServer::ScreenOrientation screen_orientation;
+
+	ObjectID window_attached_instance_id;
+
+	Callable window_event_callback;
+	Callable window_resize_callback;
+	Callable input_event_callback;
+	Callable input_text_callback;
+
+	int virtual_keyboard_height = 0;
+
+	void perform_event(const Ref<InputEvent> &p_event);
+
+	DisplayServerIPhone(const String &p_rendering_driver, DisplayServer::WindowMode p_mode, uint32_t p_flags, const Vector2i &p_resolution, Error &r_error);
+	~DisplayServerIPhone();
+
+public:
+	String rendering_driver;
+
+	static DisplayServerIPhone *get_singleton();
+
+	static void register_iphone_driver();
+	static DisplayServer *create_func(const String &p_rendering_driver, WindowMode p_mode, uint32_t p_flags, const Vector2i &p_resolution, Error &r_error);
+	static Vector<String> get_rendering_drivers_func();
+
+	// MARK: - Events
+
+	virtual void process_events() override;
+
+	virtual void window_set_rect_changed_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual void window_set_window_event_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual void window_set_input_event_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual void window_set_input_text_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual void window_set_drop_files_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;
+
+	static void _dispatch_input_events(const Ref<InputEvent> &p_event);
+	void send_input_event(const Ref<InputEvent> &p_event) const;
+	void send_input_text(const String &p_text) const;
+	void send_window_event(DisplayServer::WindowEvent p_event) const;
+	void _window_callback(const Callable &p_callable, const Variant &p_arg) const;
+
+	// MARK: - Input
+
+	// MARK: Touches
+
+	void touch_press(int p_idx, int p_x, int p_y, bool p_pressed, bool p_doubleclick);
+	void touch_drag(int p_idx, int p_prev_x, int p_prev_y, int p_x, int p_y);
+	void touches_cancelled(int p_idx);
+
+	// MARK: Keyboard
+
+	void key(uint32_t p_key, bool p_pressed);
+
+	// MARK: Motion
+
+	void update_gravity(float p_x, float p_y, float p_z);
+	void update_accelerometer(float p_x, float p_y, float p_z);
+	void update_magnetometer(float p_x, float p_y, float p_z);
+	void update_gyroscope(float p_x, float p_y, float p_z);
+
+	// MARK: -
+
+	virtual bool has_feature(Feature p_feature) const override;
+	virtual String get_name() const override;
+
+	virtual void alert(const String &p_alert, const String &p_title = "ALERT!") override;
+
+	virtual int get_screen_count() const override;
+	virtual Point2i screen_get_position(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;
+	virtual Size2i screen_get_size(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;
+	virtual Rect2i screen_get_usable_rect(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;
+	virtual int screen_get_dpi(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;
+	virtual float screen_get_scale(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;
+
+	virtual Vector<DisplayServer::WindowID> get_window_list() const override;
+
+	virtual WindowID
+	get_window_at_screen_position(const Point2i &p_position) const override;
+
+	virtual void window_attach_instance_id(ObjectID p_instance, WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual ObjectID window_get_attached_instance_id(WindowID p_window = MAIN_WINDOW_ID) const override;
+
+	virtual void window_set_title(const String &p_title, WindowID p_window = MAIN_WINDOW_ID) override;
+
+	virtual int window_get_current_screen(WindowID p_window = MAIN_WINDOW_ID) const override;
+	virtual void window_set_current_screen(int p_screen, WindowID p_window = MAIN_WINDOW_ID) override;
+
+	virtual Point2i window_get_position(WindowID p_window = MAIN_WINDOW_ID) const override;
+	virtual void window_set_position(const Point2i &p_position, WindowID p_window = MAIN_WINDOW_ID) override;
+
+	virtual void window_set_transient(WindowID p_window, WindowID p_parent) override;
+
+	virtual void window_set_max_size(const Size2i p_size, WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual Size2i window_get_max_size(WindowID p_window = MAIN_WINDOW_ID) const override;
+
+	virtual void window_set_min_size(const Size2i p_size, WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual Size2i window_get_min_size(WindowID p_window = MAIN_WINDOW_ID) const override;
+
+	virtual void window_set_size(const Size2i p_size, WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual Size2i window_get_size(WindowID p_window = MAIN_WINDOW_ID) const override;
+	virtual Size2i window_get_real_size(WindowID p_window = MAIN_WINDOW_ID) const override;
+
+	virtual void window_set_mode(WindowMode p_mode, WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual WindowMode window_get_mode(WindowID p_window = MAIN_WINDOW_ID) const override;
+
+	virtual bool window_is_maximize_allowed(WindowID p_window = MAIN_WINDOW_ID) const override;
+
+	virtual void window_set_flag(WindowFlags p_flag, bool p_enabled, WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual bool window_get_flag(WindowFlags p_flag, WindowID p_window = MAIN_WINDOW_ID) const override;
+
+	virtual void window_request_attention(WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual void window_move_to_foreground(WindowID p_window = MAIN_WINDOW_ID) override;
+
+	virtual float screen_get_max_scale() const override;
+
+	virtual void screen_set_orientation(DisplayServer::ScreenOrientation p_orientation, int p_screen) override;
+	virtual DisplayServer::ScreenOrientation screen_get_orientation(int p_screen) const override;
+
+	virtual bool window_can_draw(WindowID p_window = MAIN_WINDOW_ID) const override;
+
+	virtual bool can_any_window_draw() const override;
+
+	virtual bool screen_is_touchscreen(int p_screen) const override;
+
+	virtual void virtual_keyboard_show(const String &p_existing_text, const Rect2 &p_screen_rect, int p_max_length, int p_cursor_start, int p_cursor_end) override;
+	virtual void virtual_keyboard_hide() override;
+
+	void virtual_keyboard_set_height(int height);
+	virtual int virtual_keyboard_get_height() const override;
+
+	virtual void clipboard_set(const String &p_text) override;
+	virtual String clipboard_get() const override;
+
+	virtual void screen_set_keep_on(bool p_enable) override;
+	virtual bool screen_is_kept_on() const override;
+
+	virtual Error native_video_play(String p_path, float p_volume, String p_audio_track, String p_subtitle_track, int p_screen = SCREEN_OF_MAIN_WINDOW) override;
+	virtual bool native_video_is_playing() const override;
+	virtual void native_video_pause() override;
+	virtual void native_video_unpause() override;
+	virtual void native_video_stop() override;
+
+	void resize_window(CGSize size);
+};
+
+#endif /* display_server_iphone_h */