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| 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_ | |
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