chore(build): revert to sdl2

vendor/sdl-2.30.5/src/video/cocoa/SDL_cocoametalview.m

@@ -0,0 +1,195 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2024 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
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+/*
+ * @author Mark Callow, www.edgewise-consulting.com.
+ *
+ * Thanks to @slime73 on GitHub for their gist showing how to add a CAMetalLayer
+ * backed view.
+ */
+#include "../../SDL_internal.h"
+
+#import "SDL_cocoametalview.h"
+
+#if defined(SDL_VIDEO_DRIVER_COCOA) && (defined(SDL_VIDEO_VULKAN) || defined(SDL_VIDEO_METAL))
+
+#include "SDL_events.h"
+#include "SDL_syswm.h"
+
+
+static int SDLCALL
+SDL_MetalViewEventWatch(void *userdata, SDL_Event *event)
+{
+    /* Update the drawable size when SDL receives a size changed event for
+     * the window that contains the metal view. It would be nice to use
+     * - (void)resizeWithOldSuperviewSize:(NSSize)oldSize and
+     * - (void)viewDidChangeBackingProperties instead, but SDL's size change
+     * events don't always happen in the same frame (for example when a
+     * resizable window exits a fullscreen Space via the user pressing the OS
+     * exit-space button). */
+    if (event->type == SDL_WINDOWEVENT && event->window.event == SDL_WINDOWEVENT_SIZE_CHANGED) {
+        @autoreleasepool {
+            SDL_cocoametalview *view = (__bridge SDL_cocoametalview *)userdata;
+            if (view.sdlWindowID == event->window.windowID) {
+                [view updateDrawableSize];
+            }
+        }
+    }
+    return 0;
+}
+
+@implementation SDL_cocoametalview
+
+/* Return a Metal-compatible layer. */
++ (Class)layerClass
+{
+    return NSClassFromString(@"CAMetalLayer");
+}
+
+/* Indicate the view wants to draw using a backing layer instead of drawRect. */
+- (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];
+}
+
+- (instancetype)initWithFrame:(NSRect)frame
+                      highDPI:(BOOL)highDPI
+                     windowID:(Uint32)windowID;
+{
+    self = [super initWithFrame:frame];
+    if (self != nil) {
+        self.highDPI = highDPI;
+        self.sdlWindowID = windowID;
+        self.wantsLayer = YES;
+
+        /* Allow resize. */
+        self.autoresizingMask = NSViewWidthSizable | NSViewHeightSizable;
+
+        SDL_AddEventWatch(SDL_MetalViewEventWatch, (__bridge void *)(self));
+
+        [self updateDrawableSize];
+    }
+
+    return self;
+}
+
+- (void)dealloc
+{
+    SDL_DelEventWatch(SDL_MetalViewEventWatch, (__bridge void *)(self));
+}
+
+- (NSInteger)tag
+{
+    return SDL_METALVIEW_TAG;
+}
+
+- (void)updateDrawableSize
+{
+    CAMetalLayer *metalLayer = (CAMetalLayer *)self.layer;
+    NSSize size = self.bounds.size;
+    NSSize backingSize = size;
+
+    if (self.highDPI) {
+        /* Note: NSHighResolutionCapable must be set to true in the app's
+         * Info.plist in order for the backing size to be high res.
+         */
+        backingSize = [self convertSizeToBacking:size];
+    }
+
+    metalLayer.contentsScale = backingSize.height / size.height;
+    metalLayer.drawableSize = NSSizeToCGSize(backingSize);
+}
+
+- (NSView *)hitTest:(NSPoint)point {
+    return nil;
+}
+
+@end
+
+SDL_MetalView Cocoa_Metal_CreateView(_THIS, SDL_Window * window)
+{ @autoreleasepool {
+    SDL_WindowData* data = (__bridge SDL_WindowData *)window->driverdata;
+    NSView *view = data.nswindow.contentView;
+    BOOL highDPI = (window->flags & SDL_WINDOW_ALLOW_HIGHDPI) != 0;
+    Uint32 windowID = SDL_GetWindowID(window);
+    SDL_cocoametalview *newview;
+    SDL_MetalView metalview;
+
+    newview = [[SDL_cocoametalview alloc] initWithFrame:view.frame
+                                                highDPI:highDPI
+                                                windowID:windowID];
+    if (newview == nil) {
+        SDL_OutOfMemory();
+        return NULL;
+    }
+
+    [view addSubview:newview];
+
+    /* Make sure the drawable size is up to date after attaching the view. */
+    [newview updateDrawableSize];
+
+    metalview = (SDL_MetalView)CFBridgingRetain(newview);
+
+    return metalview;
+}}
+
+void Cocoa_Metal_DestroyView(_THIS, SDL_MetalView view)
+{ @autoreleasepool {
+    SDL_cocoametalview *metalview = CFBridgingRelease(view);
+    [metalview removeFromSuperview];
+}}
+
+void *Cocoa_Metal_GetLayer(_THIS, SDL_MetalView view)
+{ @autoreleasepool {
+    SDL_cocoametalview *cocoaview = (__bridge SDL_cocoametalview *)view;
+    return (__bridge void *)cocoaview.layer;
+}}
+
+void Cocoa_Metal_GetDrawableSize(_THIS, SDL_Window * window, int * w, int * h)
+{ @autoreleasepool {
+    SDL_WindowData *data = (__bridge SDL_WindowData *)window->driverdata;
+    NSView *contentView = data.sdlContentView;
+    SDL_cocoametalview* metalview = [contentView viewWithTag:SDL_METALVIEW_TAG];
+    if (metalview) {
+        CAMetalLayer *layer = (CAMetalLayer*)metalview.layer;
+        SDL_assert(layer != NULL);
+        if (w) {
+            *w = layer.drawableSize.width;
+        }
+        if (h) {
+            *h = layer.drawableSize.height;
+        }
+    } else {
+        /* Fall back to the viewport size. */
+        SDL_GetWindowSizeInPixels(window, w, h);
+    }
+}}
+
+#endif /* SDL_VIDEO_DRIVER_COCOA && (SDL_VIDEO_VULKAN || SDL_VIDEO_METAL) */
+
+/* vi: set ts=4 sw=4 expandtab: */