implemented Vulkan surface creation

rendering/vk/macos_platform.c

@@ -0,0 +1,24 @@
+#ifndef MACOS_PLATFORM
+#define MACOS_PLATFORM
+
+#include <objc/runtime.h>
+#include <objc/message.h>
+#include "../../rgfw.h"
+
+#define cls objc_getClass
+#define sel sel_getUid
+typedef id (*object_message_send)(id, SEL, id); 
+typedef id (*class_message_send)(Class, SEL, ...);
+
+#define msg ((object_message_send)objc_msgSend)
+#define cls_msg ((class_message_send)objc_msgSend)
+
+void macos_set_window_layer(RGFW_window *window)
+{
+	Class CAMetalLayer = cls("CAMetalLayer");
+	id metal_layer = cls_msg(CAMetalLayer, sel("layer"));
+	id view = (id)RGFW_window_getView_OSX(window);
+	msg(view, sel("setLayer:"), metal_layer);
+}
+
+#endif