From 682ed91017e6aa043feaf0c70a34118445e65d1e Mon Sep 17 00:00:00 2001
From: Ken Thomases <ken@codeweavers.com>
Date: Wed, 20 Nov 2013 15:35:37 -0600
Subject: [PATCH] winemac: Defer attaching OpenGL context to a view which is
 zero-sized or outside its window's bounds.

That fails with the dread "invalid drawable" message.
---
 dlls/winemac.drv/cocoa_opengl.m | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/dlls/winemac.drv/cocoa_opengl.m b/dlls/winemac.drv/cocoa_opengl.m
index b678cae3ce0..45799dba539 100644
--- a/dlls/winemac.drv/cocoa_opengl.m
+++ b/dlls/winemac.drv/cocoa_opengl.m
@@ -123,14 +123,15 @@ void macdrv_make_context_current(macdrv_opengl_context c, macdrv_view v)
         context.needsUpdate = FALSE;
         if (view)
         {
-            __block BOOL windowHasDevice;
+            __block BOOL viewIsValidDrawable;
 
             macdrv_add_view_opengl_context(v, c);
 
             OnMainThread(^{
-                windowHasDevice = [[view window] windowNumber] > 0;
+                viewIsValidDrawable = [[view window] windowNumber] > 0 &&
+                                      !NSIsEmptyRect([view visibleRect]);
             });
-            if (windowHasDevice)
+            if (viewIsValidDrawable)
             {
                 [context setView:view];
                 [context setLatentView:nil];