shithub: choc

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video: Use relative mouse mode, not grab.

SDL_SetWindowGrab() just confines the mouse cursor to the window
and on OS X does not prevent the cursor escaping the window. Relative
mode appears to be the correct solution that provides what we
actually want.

--- a/src/i_video.c

+++ b/src/i_video.c

@@ -233,13 +233,11 @@

 static void SetShowCursor(boolean show)

 {

-    SDL_ShowCursor(show);

-

-    // When the cursor is hidden, grab the input.

-

     if (!screensaver_mode)

     {

-        SDL_SetWindowGrab(screen, !show);

+        // When the cursor is hidden, grab the input.

+        // Relative mode implicitly hides the cursor.

+        SDL_SetRelativeMouseMode(!show);

     }

 }