commit 1c6dd604fe836e1ac819012d49536690408c18f2
author Sam Lantinga <slouken@libsdl.org> Mon Feb 01 22:35:46 2021 -0800
committer Sam Lantinga <slouken@libsdl.org> Mon Feb 01 22:35:46 2021 -0800
tree 3c7f720464772950cac53668316bfc43b94f4979
parent ca799c81c9f4016286da3493778e874aa815f6e6

Fixed bug 5471 - Creating a fullscreen desktop window goes windowed temporarily

This is caused by the Metal renderer recreating the window because by default we create an OpenGL window on macOS.

It turns out that at least on macOS 10.15, a window that has been initialized for OpenGL can also be used with Metal. So we'll skip recreating the window in that case.

src/render/metal/SDL_render_metal.m

diff --git a/src/render/metal/SDL_render_metal.m b/src/render/metal/SDL_render_metal.m
index 67ac1b6..32c1c48 100644
--- a/src/render/metal/SDL_render_metal.m
+++ b/src/render/metal/SDL_render_metal.m
@@ -1674,7 +1674,7 @@
     }
 
     window_flags = SDL_GetWindowFlags(window);
-    if (!(window_flags & SDL_WINDOW_METAL)) {
+    if (!(window_flags & (SDL_WINDOW_METAL|SDL_WINDOW_OPENGL))) {
         changed_window = SDL_TRUE;
         if (SDL_RecreateWindow(window, (window_flags & ~(SDL_WINDOW_VULKAN | SDL_WINDOW_OPENGL)) | SDL_WINDOW_METAL) < 0) {
             return NULL;