ui/compositor/compositor_constants.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef UI_COMPOSITOR_COMPOSITOR_CONSTANTS_H_
   6 #define UI_COMPOSITOR_COMPOSITOR_CONSTANTS_H_
   7
   8 // This flag is used to work around a rendering bug in Windows where the
   9 // software surface becomes inconsistent with the hardware surface. This
  10 // happens in particular circumstances (Classic mode, Chrome using hardware
  11 // rendering, and the window on a secondary monitor) and when moving the mouse
  12 // over the window, Windows restores the GDI software surface underneath the
  13 // mouse, rather than the hardware surface we've painted. As a result, for
  14 // small or infrequently painting windows, we force back to the software
  15 // compositor to avoid this bug. See http://crbug.com/333380.
  16 const wchar_t kForceSoftwareCompositor[] = L"Chrome.ForceSoftwareCompositor";
  17
  18 #endif  // UI_COMPOSITOR_COMPOSITOR_CONSTANTS_H_