SDL: x11: Only enable _NET_WM_SYNC_REQUEST for OpenGL windows

SDL Commits
1 
From 646f1f243f8be853531703c1f656325580435f9e Mon Sep 17 00:00:00 2001
From: Frank Praznik <[EMAIL REDACTED]>
Date: Sat, 5 Apr 2025 15:32:30 -0400
Subject: [PATCH] x11: Only enable _NET_WM_SYNC_REQUEST for OpenGL windows

It doesn't work well with Vulkan, and Vulkan windows may not have the Vulkan flag set in all circumstances, so only enable it if we explicitly know that OpenGL is being requested instead.
---
 src/video/x11/SDL_x11window.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/video/x11/SDL_x11window.c b/src/video/x11/SDL_x11window.c
index 20a85321e959c..d88487627e817 100644
--- a/src/video/x11/SDL_x11window.c
+++ b/src/video/x11/SDL_x11window.c
@@ -534,7 +534,7 @@ bool X11_CreateWindow(SDL_VideoDevice *_this, SDL_Window *window, SDL_Properties
     }
 
     const bool force_override_redirect = SDL_GetHintBoolean(SDL_HINT_X11_FORCE_OVERRIDE_REDIRECT, false);
-    const bool use_resize_sync = !(window->flags & SDL_WINDOW_VULKAN); /* doesn't work well with Vulkan */
+    const bool use_resize_sync = !!(window->flags & SDL_WINDOW_OPENGL); // Doesn't work well with Vulkan
     SDL_WindowData *windowdata;
     Display *display = data->display;
     int screen = displaydata->screen;