[ios] Enable high resolution support

CMakeLists.txt

@@ -670,7 +670,8 @@ else()
     Source/main.cpp
     Packaging/windows/devilutionx.exe.manifest
     Packaging/windows/devilutionx.rc
-    Packaging/apple/AppIcon.icns)
+    Packaging/apple/AppIcon.icns
+    Packaging/apple/LaunchScreen.storyboard)
 endif()
 target_link_libraries(${BIN_TARGET} PRIVATE libdevilutionx)
 
@@ -1168,12 +1169,13 @@ if(APPLE)
   set(MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION})
   set(MACOSX_BUNDLE_LONG_VERSION_STRING "Version ${PROJECT_VERSION}")
   if(IOS)
+    set_target_properties(${BIN_TARGET} PROPERTIES XCODE_ATTRIBUTE_TARGETED_DEVICE_FAMILY "1,2")
     set(CMAKE_OSX_DEPLOYMENT_TARGET "9.0")
   else()
     set(CMAKE_OSX_DEPLOYMENT_TARGET "10.12.0")
   endif()
   set_target_properties(${BIN_TARGET} PROPERTIES MACOSX_BUNDLE_ICON_FILE "AppIcon.icns")
-  set_target_properties(${BIN_TARGET} PROPERTIES MACOSX_BUNDLE_INFO_PLIST "${CMAKE_CURRENT_SOURCE_DIR}/Packaging/macOS/Info.plist")
+  set_target_properties(${BIN_TARGET} PROPERTIES MACOSX_BUNDLE_INFO_PLIST "${CMAKE_CURRENT_SOURCE_DIR}/Packaging/apple/Info.plist")
 
   install (TARGETS ${BIN_TARGET} DESTINATION ./)
 

Packaging/apple/Info.plist

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
 	<key>CFBundleDevelopmentRegion</key>
@@ -28,6 +28,10 @@
 	<string>????</string>
 	<key>CFBundleVersion</key>
 	<string>${MACOSX_BUNDLE_BUNDLE_VERSION}</string>
+    <key>UILaunchStoryboardName</key>
+    <string>LaunchScreen</string>
+	<key>NSHighResolutionCapable</key>
+	<true/>
 	<key>CSResourcesFileMapped</key>
 	<true/>
 	<key>LSRequiresCarbon</key>

Packaging/apple/LaunchScreen.storyboard

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="14460.31" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="Y6W-OH-hqX">
+    <device id="retina4_7" orientation="portrait">
+        <adaptation id="fullscreen"/>
+    </device>
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14460.20"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="s0d-6b-0kx">
+            <objects>
+                <viewController id="Y6W-OH-hqX" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="5EZ-qb-Rvc">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" white="0.0" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                        <viewLayoutGuide key="safeArea" id="eJ7-NN-0U7"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="Ief-a0-LHa" userLabel="First Responder" customClass="UIResponder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="19.419642857142858" y="44.927536231884062"/>
+        </scene>
+    </scenes>
+</document>

Source/utils/display.cpp

@@ -205,7 +205,7 @@ bool SpawnWindow(const char *lpWindowName)
 		SDL_WM_GrabInput(SDL_GRAB_ON);
 	atexit(SDL_VideoQuit); // Without this video mode is not restored after fullscreen.
 #else
-	int flags = 0;
+	int flags = SDL_WINDOW_ALLOW_HIGHDPI;
 	if (*sgOptions.Graphics.upscale) {
 		if (!gbForceWindowed && *sgOptions.Graphics.fullscreen) {
 			flags |= SDL_WINDOW_FULLSCREEN_DESKTOP;