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* Move qopenglwidget example to manual testsLaszlo Agocs2023-05-241-39/+0
| | | | | | Pick-to: 6.5 Change-Id: I76e6377008484a7b17c65e3c03139a0fb2fc5c34 Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
* Use SPDX license identifiersLucie Gérard2022-05-161-49/+2
| | | | | | | | | | | | | Replace the current license disclaimer in files by a SPDX-License-Identifier. Files that have to be modified by hand are modified. License files are organized under LICENSES directory. Task-number: QTBUG-67283 Change-Id: Id880c92784c40f3bbde861c0d93f58151c18b9f1 Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org> Reviewed-by: Lars Knoll <lars.knoll@qt.io> Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
* Compose render-to-texture widgets through QRhiLaszlo Agocs2022-03-111-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | QPlatformTextureList holds a QRhiTexture instead of GLuint. A QPlatformBackingStore now optionally can own a QRhi and a QRhiSwapChain for the associated window. Non-GL rendering must use this QRhi everywhere, whereas GL (QOpenGLWidget) can choose to still rely on resource sharing between contexts. A widget tells that it wants QRhi and the desired configuration in a new virtual function in QWidgetPrivate returning a QPlatformBackingStoreRhiConfig. This is evaluated (among a top-level's all children) upon create() before creating the repaint manager and the QWidgetWindow. In QOpenGLWidget what do request is obvious: it will request an OpenGL-based QRhi. QQuickWidget (or a potential future QRhiWidget) will be more interesting: it needs to honor the standard Qt Quick env.vars. and QQuickWindow APIs (or, in whatever way the user configured the QRhiWidget), and so will set up the config struct accordingly. In addition, the rhiconfig and surface type is (re)evaluated when (re)parenting a widget to a new tlw. If needed, this will now trigger a destroy - create on the tlw. This should be be safe to do in setParent. When multiple child widgets report an enabled rhiconfig, the first one (the first child encountered) wins. So e.g. attempting to have a QOpenGLWidget and a Vulkan-based QQuickWidget in the same top-level window will fail one of the widgets (it likely won't render). RasterGLSurface is no longer used by widgets. Rather, the appropriate surface type is chosen. The rhi support in the backingstore is usable without widgets as well. To make rhiFlush() functional, one needs to call setRhiConfig() after creating the QBackingStore. (like QWidget does to top-level windows) Most of the QT_NO_OPENGL ifdefs are eliminated all over the place. Everything with QRhi is unconditional code at compile time, except the actual initialization. Having to plumb the widget tlw's shareContext (or, now, the QRhi) through QWindowPrivate is no longer needed. The old approach does not scale: to implement composeAndFlush (now rhiFlush) we need more than just a QRhi object, and this way we no longer pollute everything starting from the widget level (QWidget's topextra -> QWidgetWindow -> QWindowPrivate) just to send data around. The BackingStoreOpenGLSupport interface and the QtGui - QtOpenGL split is all gone. Instead, there is a QBackingStoreDefaultCompositor in QtGui which is what the default implementations of composeAndFlush and toTexture call. (overriding composeAndFlush and co. f.ex. in eglfs should continue working mostly as-is, apart from adapting to the texture list changes and getting the native OpenGL texture id out of the QRhiTexture) As QQuickWidget is way too complicated to just port as-is, an rhi manual test (rhiwidget) is introduced as a first step, in ordewr to exercise a simple, custom render-to-texture widget that does something using a (not necessarily OpenGL-backed) QRhi and acts as fully functional QWidget (modeled after QOpenGLWidget). This can also form the foundation of a potential future QRhiWidget. It is also possible to force the QRhi-based flushing always, regardless of the presence of render-to-texture widgets. To exercise this, set the env.var. QT_WIDGETS_RHI=1. This picks a platform-specific default, and can be overridden with QT_WIDGETS_RHI_BACKEND. (in sync with Qt Quick) This can eventually be extended to query the platform plugin as well to check if the platform plugin prefers to always do flushes with a 3D API. QOpenGLWidget should work like before from the user's perspective, while internally it has to do some things differently to play nice and prevent regressions with the new rendering architecture. To exercise this better, the qopenglwidget example gets a new tab-based view (that could perhaps replace the example's main window later on?). The openglwidget manual test is made compatible with Qt 6, and gets a counterpart in form of the dockedopenglwidget manual test, which is a modified version of the cube example that features dock widgets. This is relevant in particular because render-to-texture widgets within a QDockWidget has its own specific quirks, with logic taking this into account, hence testing is essential. For existing applications there are two important consequences with this patch in place: - Once the rhi-based composition is enabled, it stays active for the lifetime of the top-level window. - Dynamically creating and parenting the first render-to-texture widget to an already created tlw will destroy and recreate the tlw (and the underlying window). The visible effects of this depend on the platform. (e.g. the window may disappear and reappear on some, whereas with other windowing systems it is not noticeable at all - this is not really different from similar situtions with reparenting or when moving windows between screens, so should be acceptable in practice) - On iOS raster windows are flushed with Metal (and rhi) from now on (previously this was through OpenGL by making flush() call composeAndFlush(). Change-Id: Id05bd0f7a26fa845f8b7ad8eedda3b0e78ab7a4e Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
* Use QList instead of QVector in examplesJarek Kobus2020-06-231-1/+1
| | | | | | Task-number: QTBUG-84469 Change-Id: Id14119168bb1bf11f99bda7ef6ee9cf51bcfab2e Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
* Unify license header usage.Jani Heikkinen2016-03-291-3/+13
| | | | | | | | | Update files using old header.LGPL3 to header.LGPL Update files using old FDL template to use new one Update files using old BSD template to use new one Change-Id: I36a78272516f9953d02956522f285b40adfc8915 Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
* Clip QOpenGLWidget and QQuickWidget correctlyLaszlo Agocs2015-06-011-0/+2
| | | | | | | | | | | | | Introduce support for the widgets' clipRect(). Right now render-to-texture widgets in scroll areas placed close to each other result in broken (non-existent) clipping. Similarly, stack-on-top widgets fail to clip when placed inside a scroll area. This is now corrected and the qopenglwidget example is enhanced to utilize a scroll area. Task-number: QTBUG-45860 Change-Id: I859a63d61a50d64ba9e87244f83c5969dce12337 Reviewed-by: Jørgen Lind <jorgen.lind@theqtcompany.com>
* Updated BSD licensed file headersJani Heikkinen2015-02-151-3/+3
| | | | | Change-Id: I6441ff931dbd33b698d762e6f6784898f3f60fe7 Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
* Update copyright headersJani Heikkinen2015-02-111-5/+5
| | | | | | | | | | | | | | | | | | Qt copyrights are now in The Qt Company, so we could update the source code headers accordingly. In the same go we should also fix the links to point to qt.io. Outdated header.LGPL removed (use header.LGPL21 instead) Old header.LGPL3 renamed to header.LGPL3-COMM to match actual licensing combination. New header.LGPL-COMM taken in the use file which were using old header.LGPL3 (src/plugins/platforms/android/extract.cpp) Added new header.LGPL3 containing Commercial + LGPLv3 + GPLv2 license combination Change-Id: I6f49b819a8a20cc4f88b794a8f6726d975e8ffbe Reviewed-by: Matti Paaso <matti.paaso@theqtcompany.com>
* Make qopenglwidget example functional without timers tooLaszlo Agocs2014-09-301-0/+5
| | | | | Change-Id: I6a89eaf794202c45a5ad3152d304e46041704730 Reviewed-by: Gunnar Sletta <gunnar@sletta.org>
* Make QOpenGLWidget publicLaszlo Agocs2014-08-011-0/+66
QOpenGLWidget is now public. In addition Qt::WA_AlwaysStackOnTop is introduced to support the special case of semi-transparent QOpenGLWidget or QQuickWidget on top of regular widgets. hellogl_es2 becomes the qopenglwidget example. This example performs painting both via QPainter and native GL commands and has the OpenGL widget combined with other, normal widgets. The widget stack receives some changes when it comes to renderToTexture widgets like QQuickWidget and QOpenGLWidget. Calling update() will now result in a paint event, which is essential for QOpenGLWidget since we want it to behave like a regular widget. The dirty region handling is extended specially for such widgets due to performance reasons. (an OpenGL content update must not result in any backingstore painting, and is thus handled as a different kind of dirtiness) [ChangeLog] Added QOpenGLWidget. This widget serves as a replacement for QGLWidget. Task-number: QTBUG-36899 Task-number: QTBUG-40086 Change-Id: Ibf7f82fea99b39edfffd2fc088e7e0eadbca25cf Reviewed-by: Paul Olav Tvete <paul.tvete@digia.com>