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* Update license headers and add new license filesMatti Paaso2014-09-241-18/+10
| | | | | | | | | - Renamed LICENSE.LGPL to LICENSE.LGPLv21 - Added LICENSE.LGPLv3 - Removed LICENSE.GPL Change-Id: Iec3406e3eb3f133be549092015cefe33d259a3f2 Reviewed-by: Iikka Eklund <iikka.eklund@digia.com>
* direct2d: Fix translucent/frameless window renderingAndrew Knight2014-09-011-1/+5
| | | | | | | | | | | | | | | | | | | | When using WA_TranslucentBackground/FramelessWindowHint, the backing store must paint to an offscreen texture instead of the swap chain in order to achieve the desired results. This texture is then presented to the screen using UpdateLayeredWindowIndirect(). As the swap chain is not needed in this mode, its construction is skipped if indirect rendering is active. Furthermore, the layering options were updated to fix an issue with transparent layers overpainting the background. The layer options were switched to D2D1_LAYER_OPTIONS1_NONE, which appears to work for both translucent and non-translucent rendering modes. Task-number: QTBUG-40601 Change-Id: I656f7cdfb424d1eda6f82c2c69500e78d8c1726a Reviewed-by: Louai Al-Khanji <louai.al-khanji@digia.com> Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
* Direct2D QPA: Draw directly to swap chainLouai Al-Khanji2014-05-051-1/+6
| | | | | | | | | | | | | | | | | | | Remove the intermediate pixmap in the backing store and draw directly to the window swap chain. This is faster and reduces memory pressure on the graphics card. In case of native child widgets we need to read back the back buffer, which incurs an extra copy in this case. In an artificial benchmark drawing animated full screen gradients as fast as possible this patch increases performance by 42% on my current machine from 480fps to around 680fps, i.e. the time for actually getting the pixels to the screen is now lower. Change-Id: Ifbeda0e199afec03cecfe76337679a9e9d082bdd Reviewed-by: Risto Avila <risto.avila@digia.com> Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com> Reviewed-by: Andrew Knight <andrew.knight@digia.com>
* Improve direct2d backing store implementationLouai Al-Khanji2014-01-271-0/+74
Add a per-window swap chain to a QPlatformWindow subclass instead of tying it to the backing store. This is needed to support native widgets (as opposed to alien widgets). Change the backing store to draw to an intermediate pixmap and flush to the requested window by using the per-window swap chain. This also opens the door for faster window presentation later on by using the swap chain more intelligently. Also add a changelog entry for the direct2d plugin, which was omitted earlier. [ChangeLog][QtGui][Windows] Introduce experimental direct2d platform plugin for Windows. This plugin shares most code with the current windows plugin, but substitutes a direct2d-based paint engine for window backing stores and pixmaps. Change-Id: I5f54e7e4c1fb15b1639bd26b712fb40ac141e4ac Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>