winex11.drv: Don't call glXSwapBuffers if the context or the drawable are invalid.

90608c8c · Matteo Bruni · Alexandre Julliard · 1902e1cb · 90608c8c
Commit 90608c8c authored Mar 17, 2011 by Matteo Bruni Committed by Alexandre Julliard Mar 31, 2011
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opengl.c dlls/winex11.drv/opengl.c +14 -0

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--- a/dlls/winex11.drv/opengl.c
+++ b/dlls/winex11.drv/opengl.c
@@ -3818,6 +3818,20 @@ BOOL CDECL X11DRV_SwapBuffers(X11DRV_PDEVICE *physDev)

  TRACE("(%p)\n", physDev);

+  if (!ctx)
+  {
+      WARN("Using a NULL context, skipping\n");
+      SetLastError(ERROR_INVALID_HANDLE);
+      return FALSE;
+  }
+
+  if (!physDev->current_pf)
+  {
+      WARN("Using an invalid drawable, skipping\n");
+      SetLastError(ERROR_INVALID_HANDLE);
+      return FALSE;
+  }
+
  drawable = get_glxdrawable(physDev);

  wine_tsx11_lock();