Ken Thomases : winemac: Only call -[NSOpenGLContext update] from the main thread.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 3deae92a6fe1c2634410fb34a552b7f39fd1adb9
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=3deae92a6fe1c2634410fb34a552b7f39fd1adb9

Author: Ken Thomases <ken at codeweavers.com>
Date:   Wed Mar 11 14:55:53 2020 -0500

winemac: Only call -[NSOpenGLContext update] from the main thread.

Signed-off-by: Ken Thomases <ken at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/winemac.drv/cocoa_opengl.m | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dlls/winemac.drv/cocoa_opengl.m b/dlls/winemac.drv/cocoa_opengl.m
index e60b0b388b..80a766cbda 100644
--- a/dlls/winemac.drv/cocoa_opengl.m
+++ b/dlls/winemac.drv/cocoa_opengl.m
@@ -359,8 +359,9 @@ void macdrv_update_opengl_context(macdrv_opengl_context c)
                 [context clearDrawableLeavingSurfaceOnScreen];
                 context.view = view;
             }
-            else
+            else OnMainThread(^{
                 [context update];
+            });
             [context resetSurfaceIfBackingSizeChanged];
         }
     }