+#ifndef SDL_VIDEO_RENDER_OGL_ES2
+#define SDL_VIDEO_RENDER_OGL_ES2 1
+#endif
+
+#ifndef SDL_VIDEO_RENDER_METAL
+/* Metal only supported on 64-bit architectures with 10.11+ */
+#if TARGET_CPU_X86_64 && (MAC_OS_X_VERSION_MAX_ALLOWED >= 101100)
+#define SDL_VIDEO_RENDER_METAL 1
+#else
+#define SDL_VIDEO_RENDER_METAL 0
+#endif
+#endif
+