implemented vulkan instance creation

vk/platform.c

@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: BSD-3-Clause
+
+#define RGFW_VULKAN
+#define RGFW_IMPLEMENTATION
+#include "../rgfw.h"
+#include <vulkan/vulkan.h>
+#include "../core/log.h"
+
+#ifdef PLATFORM_MACOS
+#include <vulkan/vulkan_macos.h>
+#include <vulkan/vulkan_metal.h>
+#endif
+
+#include "../rendering/renderer.h"
+
+/*
+ * This function is the entrypoint for the whole
+ * game. Its role is to initialize Vulkan, create
+ * the renderer and start the game loop.
+ */
+int platform_run(i32 argc, u8 **argv)
+{
+	(void) argc;
+	(void) argv;
+
+	log_info("Using Vulkan as rendering backend.\n");
+
+	RGFW_window* win = RGFW_createWindow("topaz", 0, 0, 800, 600, RGFW_windowCenter | RGFW_windowNoResize | RGFW_windowHide);
+	RGFW_window_show(win);
+	RGFW_window_setExitKey(win, RGFW_escape);
+
+	struct renderer_context *context = renderer_context_init();
+
+	while (RGFW_window_shouldClose(win) == RGFW_FALSE) {
+		RGFW_event event;
+		while (RGFW_window_checkEvent(win, &event));
+	}
+
+	RGFW_window_close(win);
+	return 0;
+}