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2025-08-25 09:50:30 +08:00
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+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2025 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"
+
+#ifndef SDL_cocoametalview_h_
+#define SDL_cocoametalview_h_
+
+#if defined(SDL_VIDEO_DRIVER_COCOA) && (defined(SDL_VIDEO_VULKAN) || defined(SDL_VIDEO_METAL))
+
+#import "../SDL_sysvideo.h"
+
+#import "SDL_cocoawindow.h"
+
+#import <Cocoa/Cocoa.h>
+#import <Metal/Metal.h>
+#import <QuartzCore/CAMetalLayer.h>
+
+@interface SDL3_cocoametalview : NSView
+
+- (instancetype)initWithFrame:(NSRect)frame
+                      highDPI:(BOOL)highDPI
+                     windowID:(Uint32)windowID
+                       opaque:(BOOL)opaque;
+
+- (void)updateDrawableSize;
+- (NSView *)hitTest:(NSPoint)point;
+
+// Override superclass tag so this class can set it.
+@property(assign, readonly) NSInteger tag;
+
+@property(nonatomic) BOOL highDPI;
+@property(nonatomic) Uint32 sdlWindowID;
+
+@end
+
+SDL_MetalView Cocoa_Metal_CreateView(SDL_VideoDevice *_this, SDL_Window *window);
+void Cocoa_Metal_DestroyView(SDL_VideoDevice *_this, SDL_MetalView view);
+void *Cocoa_Metal_GetLayer(SDL_VideoDevice *_this, SDL_MetalView view);
+
+#endif // SDL_VIDEO_DRIVER_COCOA && (SDL_VIDEO_VULKAN || SDL_VIDEO_METAL)
+
+#endif // SDL_cocoametalview_h_