Code style cleanup in the Cocoa and UIKit vulkan files.

src/video/cocoa/SDL_cocoametalview.m

@@ -46,12 +46,18 @@
 }
 
 /* Indicate the view wants to draw using a backing layer instead of drawRect. */
--(BOOL) wantsUpdateLayer { return YES; }
+-(BOOL) wantsUpdateLayer
+{
+    return YES;
+}
 
 /* When the wantsLayer property is set to YES, this method will be invoked to
  * return a layer instance.
  */
--(CALayer*) makeBackingLayer { return [self.class.layerClass layer]; }
+-(CALayer*) makeBackingLayer
+{
+    return [self.class.layerClass layer];
+}
 
 - (instancetype)initWithFrame:(NSRect)frame
                    useHighDPI:(bool)useHighDPI
@@ -77,12 +83,11 @@
 
 - (void)updateDrawableSize
 {
+    NSRect bounds = [self bounds];
     if (_useHighDPI) {
-        NSSize size = [self convertRectToBacking:[self bounds]].size;
-         /* Isn't there a better way to convert from NSSize to CGSize? */
-        CGSize cgsize = *(CGSize*)&size;
-        ((CAMetalLayer *) self.layer).drawableSize = cgsize;
+        bounds = [self convertRectToBacking:bounds];
     }
+    ((CAMetalLayer *) self.layer).drawableSize = NSSizeToCGSize(bounds.size);
 }
 
 @end
@@ -111,11 +116,13 @@ Cocoa_Mtl_GetDrawableSize(SDL_Window * window, int * w, int * h)
     if (metalview) {
         CAMetalLayer *layer = (CAMetalLayer*)metalview.layer;
         assert(layer != NULL);
-        if (w)
+        if (w) {
             *w = layer.drawableSize.width;
-        if (h)
+        }
+        if (h) {
             *h = layer.drawableSize.height;
         }
+    }
 }
 
 #endif /* SDL_VIDEO_VULKAN && SDL_VIDEO_DRIVER_COCOA */

src/video/cocoa/SDL_cocoavulkan.h

@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages

src/video/cocoa/SDL_cocoavulkan.m

@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -50,17 +50,17 @@ int Cocoa_Vulkan_LoadLibrary(_THIS, const char *path)
     SDL_bool hasSurfaceExtension = SDL_FALSE;
     SDL_bool hasMacOSSurfaceExtension = SDL_FALSE;
     PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr = NULL;
-    if(_this->vulkan_config.loader_handle)
-    {
+
+    if (_this->vulkan_config.loader_handle) {
         SDL_SetError("MoltenVK/Vulkan already loaded");
         return -1;
     }
 
     /* Load the Vulkan loader library */
-    if(!path)
+    if (!path) {
         path = SDL_getenv("SDL_VULKAN_LIBRARY");
-    if(!path)
-    {
+    }
+    if (!path) {
         /* MoltenVK framework, currently, v0.17.0, has a static library and is
          * the recommended way to use the package. There is likely no object to
          * load. */
@@ -69,28 +69,25 @@ int Cocoa_Vulkan_LoadLibrary(_THIS, const char *path)
                                           "vkGetInstanceProcAddr");
     }
     
-    if(vkGetInstanceProcAddr)
-    {
+    if (vkGetInstanceProcAddr) {
         _this->vulkan_config.loader_handle = DEFAULT_HANDLE;
-    }
-    else
-    {
-        if (!path)
-        {
+    } else {
+        if (!path) {
             /* Look for the .dylib packaged with the application instead. */
             path = DEFAULT_MOLTENVK;
         }
         
         _this->vulkan_config.loader_handle = SDL_LoadObject(path);
-        if(!_this->vulkan_config.loader_handle)
+        if (!_this->vulkan_config.loader_handle) {
             return -1;
+        }
         SDL_strlcpy(_this->vulkan_config.loader_path, path,
                     SDL_arraysize(_this->vulkan_config.loader_path));
         vkGetInstanceProcAddr = (PFN_vkGetInstanceProcAddr)SDL_LoadFunction(
             _this->vulkan_config.loader_handle, "vkGetInstanceProcAddr");
     }
-    if(!vkGetInstanceProcAddr)
-    {
+
+    if (!vkGetInstanceProcAddr) {
         SDL_SetError("Failed to find %s in either executable or %s: %s",
                      "vkGetInstanceProcAddr",
                      DEFAULT_MOLTENVK,
@@ -102,30 +99,29 @@ int Cocoa_Vulkan_LoadLibrary(_THIS, const char *path)
     _this->vulkan_config.vkEnumerateInstanceExtensionProperties =
         (void *)((PFN_vkGetInstanceProcAddr)_this->vulkan_config.vkGetInstanceProcAddr)(
             VK_NULL_HANDLE, "vkEnumerateInstanceExtensionProperties");
-    if(!_this->vulkan_config.vkEnumerateInstanceExtensionProperties)
+    if (!_this->vulkan_config.vkEnumerateInstanceExtensionProperties) {
         goto fail;
+    }
     extensions = SDL_Vulkan_CreateInstanceExtensionsList(
         (PFN_vkEnumerateInstanceExtensionProperties)
             _this->vulkan_config.vkEnumerateInstanceExtensionProperties,
         &extensionCount);
-    if(!extensions)
+    if (!extensions) {
         goto fail;
-    for(Uint32 i = 0; i < extensionCount; i++)
-    {
-        if(SDL_strcmp(VK_KHR_SURFACE_EXTENSION_NAME, extensions[i].extensionName) == 0)
+    }
+    for (Uint32 i = 0; i < extensionCount; i++) {
+        if (SDL_strcmp(VK_KHR_SURFACE_EXTENSION_NAME, extensions[i].extensionName) == 0) {
             hasSurfaceExtension = SDL_TRUE;
-        else if(SDL_strcmp(VK_MVK_MACOS_SURFACE_EXTENSION_NAME, extensions[i].extensionName) == 0)
+        } else if (SDL_strcmp(VK_MVK_MACOS_SURFACE_EXTENSION_NAME, extensions[i].extensionName) == 0) {
             hasMacOSSurfaceExtension = SDL_TRUE;
         }
+    }
     SDL_free(extensions);
-    if(!hasSurfaceExtension)
-    {
+    if (!hasSurfaceExtension) {
         SDL_SetError("Installed MoltenVK/Vulkan doesn't implement the "
                      VK_KHR_SURFACE_EXTENSION_NAME " extension");
         goto fail;
-    }
-    else if(!hasMacOSSurfaceExtension)
-    {
+    } else if (!hasMacOSSurfaceExtension) {
         SDL_SetError("Installed MoltenVK/Vulkan doesn't implement the "
                      VK_MVK_MACOS_SURFACE_EXTENSION_NAME "extension");
         goto fail;
@@ -140,10 +136,10 @@ fail:
 
 void Cocoa_Vulkan_UnloadLibrary(_THIS)
 {
-    if(_this->vulkan_config.loader_handle)
-    {
-        if (_this->vulkan_config.loader_handle != DEFAULT_HANDLE)
+    if (_this->vulkan_config.loader_handle) {
+        if (_this->vulkan_config.loader_handle != DEFAULT_HANDLE) {
             SDL_UnloadObject(_this->vulkan_config.loader_handle);
+        }
         _this->vulkan_config.loader_handle = NULL;
     }
 }
@@ -156,8 +152,7 @@ SDL_bool Cocoa_Vulkan_GetInstanceExtensions(_THIS,
     static const char *const extensionsForCocoa[] = {
         VK_KHR_SURFACE_EXTENSION_NAME, VK_MVK_MACOS_SURFACE_EXTENSION_NAME
     };
-    if(!_this->vulkan_config.loader_handle)
-    {
+    if (!_this->vulkan_config.loader_handle) {
         SDL_SetError("Vulkan is not loaded");
         return SDL_FALSE;
     }
@@ -180,14 +175,12 @@ SDL_bool Cocoa_Vulkan_CreateSurface(_THIS,
     VkMacOSSurfaceCreateInfoMVK createInfo = {};
     VkResult result;
 
-    if(!_this->vulkan_config.loader_handle)
-    {
+    if (!_this->vulkan_config.loader_handle) {
         SDL_SetError("Vulkan is not loaded");
         return SDL_FALSE;
     }
 
-    if(!vkCreateMacOSSurfaceMVK)
-    {
+    if (!vkCreateMacOSSurfaceMVK) {
         SDL_SetError(VK_MVK_MACOS_SURFACE_EXTENSION_NAME
                      " extension is not enabled in the Vulkan instance.");
         return SDL_FALSE;
@@ -198,8 +191,7 @@ SDL_bool Cocoa_Vulkan_CreateSurface(_THIS,
     createInfo.pView = Cocoa_Mtl_AddMetalView(window);
     result = vkCreateMacOSSurfaceMVK(instance, &createInfo,
                                        NULL, surface);
-    if(result != VK_SUCCESS)
-    {
+    if (result != VK_SUCCESS) {
         SDL_SetError("vkCreateMacOSSurfaceMVK failed: %s",
                      SDL_Vulkan_GetResultString(result));
         return SDL_FALSE;

src/video/uikit/SDL_uikitmetalview.m

@@ -129,18 +129,23 @@ UIKit_Mtl_AddMetalView(SDL_Window* window)
 void
 UIKit_Mtl_GetDrawableSize(SDL_Window * window, int * w, int * h)
 {
+    @autoreleasepool {
         SDL_WindowData *data = (__bridge SDL_WindowData *)window->driverdata;
         SDL_uikitview *view = (SDL_uikitview*)data.uiwindow.rootViewController.view;
         SDL_uikitmetalview* metalview = [view viewWithTag:METALVIEW_TAG];
         if (metalview) {
             CAMetalLayer *layer = (CAMetalLayer*)metalview.layer;
             assert(layer != NULL);
-        if (w)
+            if (w) {
                 *w = layer.drawableSize.width;
-        if (h)
+            }
+            if (h) {
                 *h = layer.drawableSize.height;
-    } else
+            }
+        } else {
             SDL_GetWindowSize(window, w, h);
+        }
+    }
 }
 
 #endif