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* Null out QOpenGLContext::screen upon screen disconnectLaszlo Agocs2015-09-221-2/+14
| | | | | | | | | Returning a dangling pointer is no good. Do what QOffscreenSurface does: just null it out. Task-number: QTBUG-42803 Change-Id: I01a6db9ae8974a1c78157ebc67097c8dac3a6b6e Reviewed-by: Gunnar Sletta <gunnar@sletta.org>
* Expose GLES 3.0 and 3.1 functionsLaszlo Agocs2015-07-231-0/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Using the approach we already do for some GLES 3.0 functions we can provide a cross-platform, cross-GL-GLES wrapper for ES 3.0 and 3.1 functions too. Applications only have to take extra care about the version requests (context version and version directives in shader code), the rest of their code can stay the same across desktop/mobile/embedded, even when ES 3 functions are used. The new functions are placed to a new subclass which is placed between QOpenGLFunctions and the internal QOpenGLExtensions. This is necessary because, unlike with QOpenGLFunctions, there is no guarantee that these functions are always available in all configurations. When running on desktop OpenGL, we resolve as usual. If the OpenGL version contains the function in question, either in core or as an extension, it will all just work. This is handy because it does not rely on 4.x extensions like GL_ARB_ESx_compatibility, and so ES 3.0 functions will be functional on OpenGL 3.x systems too by just setting a 3.x version number in the QSurfaceFormat. We will no longer qFatal on broken systems where the driver returns a 3.0 or 3.1 context without the corresponding functions present. Instead, we show a warning and gracefully fall back to resolving as usual, via eglGetProcAddress or similar. For functions that are available in ES2 as an extension this may just work fine. Added also an example that runs identically both with OpenGL and OpenGL ES 3 and utilizes some ES 3.0 features like instanced drawing. [ChangeLog] Added QOpenGLExtraFunctions providing OpenGL ES 3.0 and 3.1 function wrappers in a cross-platform manner. Task-number: QTBUG-46161 Change-Id: I9f929eb61946c35c415b178c4d6ab2c1c958684e Reviewed-by: Paul Olav Tvete <paul.tvete@theqtcompany.com>
* Use Q_GLOBAL_STATIC for QThreadStorage<QGuiGLThreadContext *>Sérgio Martins2015-06-191-5/+5
| | | | | | | | | QThreadStorage isn't a trivial type. Change-Id: Iedc3c16320fd025a0ccf627eac43a85ebd02aa5e Reviewed-by: Sean Harmer <sean.harmer@kdab.com> Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com> Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
* Fix incorrect FBO bindings with QOpenGLWidgetLaszlo Agocs2015-03-301-3/+17
| | | | | | | | | | | | | | QOpenGLContext::defaultFramebufferObject() knows nothing about QOpenGLWidget and QQuickWidget. The problem is that this function (and others that rely on it) is expected to give the widget's backing FBO in paintGL() and friends. To overcome this, we have to provide a way for such widgets that indicate what is the expected "default fbo". Task-number: QTBUG-43269 Change-Id: I43f439f8609382b9f7004707ab0ef9f091952b4f Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com> Reviewed-by: Gunnar Sletta <gunnar@sletta.org>
* Make versioned OpenGL functions working with the subclass patternLaszlo Agocs2015-03-271-1/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | QOpenGLFunctions allows both deriving from it and getting an instance via QOpenGLContext::functions(). Unsurprisingly a large number of users attempt to use the versioned function wrappers in the same way. Unfortunately this approach was not that well supported. Besides some potential base class exporting issues the real blocker for QOpenGLWidget - or any versionfunction subclass whose associated context changes during its lifetime - is that the functions instances could only be initialized once. Unlike instances retrieved via QOpenGLContext::versionFunctions(), instances created "manually" were not deinitialized upon the destruction of the associated context because context did not know about them. A pattern like initializeOpenGLFunctions(); delete context; create new context and make it current initializeOpenGLFunctions(); is working fine in QOpenGLFunctions-derived classes but not with the versioned ones. To overcome this, start registering such instances to the context too. QOpenGLContext::destroy() can then reset the internal state so a subsequent initializeOpenGLFunctions() will reinitialize properly instead of bailing out mistakenly thinking that everything is ready to use. Task-number: QTBUG-45199 Change-Id: Ia1420bcccb33c51508698b7a1b036c7544a66e74 Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
* QOpenGLContext: expose the shared global contextGiuseppe D'Angelo2015-02-121-0/+25
| | | | | | | | | | | | We're documenting that this context exists, therefore applications are allowed to assume that it exists. For the same reason, we should expose it as public API -- an application should be allowed to upload GL objects before creating or showing QOpenGLWidgets that use them. Change-Id: Iedbba7cd393018d93833fd2a6b02cce0639a89b4 Reviewed-by: Sean Harmer <sean.harmer@kdab.com> Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>
* Update copyright headersJani Heikkinen2015-02-111-7/+7
| | | | | | | | | | | | | | | | | | 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>
* Avoid the initializeOpenGLFunctions() call after versionFunctions()Laszlo Agocs2015-02-071-12/+17
| | | | | | | | | | | | | | | | | | | | | | | | Try making it compatible with QOpenGLContext::functions() which returns an already initialized QOpenGLFunctions. Unfortunately we cannot make them 100% compatible because functions() conveniently requires that the context (or a sharing context) is current. versionFunctions() has no such requirement and we cannot safely introduce it anymore. What we can do is to state that as long as the context is the current one, the initializeOpenGLFunctions() call can be omitted. If another context (or no context) is current, the call will still be needed, like it is today. Also, we require that the exact same context is current. Sharing does not count since the exact behavior of sharing contexts with different versions is unknown. [ChangeLog][QtGui] initializeOpenGLFunctions() no longer needs to be called when querying a versioned function wrapper object via QOpenGLContext::versionFunctions(). Change-Id: I0b4d1ae1f780da3f5dec9fc8dc67255c13faab6e Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
* Expose the ThreadedOpenGL cap to appsLaszlo Agocs2015-02-021-0/+15
| | | | | | | | | | | Applications have no public API to check for the ThreadedOpenGL flag reported by the platform plugins. Add a static function to QOpenGLContext to give interested applications a way to decide if they should do rendering on separate threads. Task-number: QTBUG-44208 Change-Id: I629332512ab31fe49f842065a911270cd6cea7aa Reviewed-by: Gunnar Sletta <gunnar@sletta.org>
* Expose context lossLaszlo Agocs2015-01-221-2/+11
| | | | | | | | | | | | | | | | | On platforms like Windows (and presumably on mobile devices too) the loss of the context (e.g. the underlying D3D device in case of ANGLE) is an event that can happen randomly and needs sufficient handling. Enhance QOpenGLContext::isValid() with the purpose of indicating context loss. Currently only the Windows EGL backend (ANGLE) has support for it. Other platforms may be added later. Task-number: QTBUG-43263 Change-Id: I8177694c1ee7cebbd5d330e34757fd94c563e6d6 Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
* Merge remote-tracking branch 'origin/5.4' into devFrederik Gladhorn2015-01-211-6/+8
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: src/corelib/global/global.pri src/corelib/global/qcompilerdetection.h src/corelib/global/qglobal.h src/corelib/tools/qdatetime.cpp src/plugins/platforms/xcb/qxcbscreen.h src/plugins/platforms/xcb/qxcbwindow.h src/widgets/dialogs/qcolordialog.cpp src/widgets/dialogs/qcolordialog_p.h tools/configure/configureapp.cpp Change-Id: Ie9d6e9df13e570da0a90a67745a0d05f46c532af
| * Doc: Remove references to QOpenGLContext::destroy()Sze Howe Koh2015-01-191-6/+8
| | | | | | | | | | | | | | | | This function is private. Task-number: QTBUG-35907 Change-Id: I370c0bfd8fda11c68ee76ee42967f117a81b381c Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
* | Merge remote-tracking branch 'origin/5.4' into devFrederik Gladhorn2014-12-291-7/+5
|\| | | | | | | | | | | | | | | | | | | Conflicts: src/corelib/tools/qbytearray.cpp src/gui/kernel/qplatformsystemtrayicon.cpp src/gui/kernel/qplatformsystemtrayicon.h src/plugins/platforms/xcb/xcb-plugin.pro Change-Id: I00355d3908b678af8a61c38f9e814a63df808c79
| * Doc: corrected broken links qtbaseNico Vertriest2014-12-231-7/+5
| | | | | | | | | | | | | | Task-number: QTBUG-43115 Change-Id: Ib441326083294a6d59d75510142b1481f7b0bc35 Reviewed-by: Topi Reiniö <topi.reinio@digia.com> Reviewed-by: Martin Smith <martin.smith@digia.com>
* | Merge remote-tracking branch 'origin/5.4' into devSimon Hausmann2014-12-181-3/+3
|\| | | | | | | | | | | | | | | | | | | Conflicts: src/corelib/global/qglobal.h src/platformsupport/platformcompositor/qopenglcompositor.cpp src/platformsupport/platformcompositor/qopenglcompositorbackingstore.cpp tests/auto/gui/kernel/qwindow/tst_qwindow.cpp Change-Id: I5422868500be695584a496dbbbc719d146bc572d
| * QOpenGLContext: Use static invocation of ↵Friedemann Kleint2014-12-181-3/+3
| | | | | | | | | | | | | | | | | | | | QGuiApplication::platformNativeInterface(). Fix MSVC warning (release build): qopenglcontext.cpp(1116) : warning C4189: 'app' : local variable is initialized but not referenced Change-Id: I00fa5237bbac4c0e3bb63ea9d3e5096e05dbe1be Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>
* | Merge remote-tracking branch 'origin/5.4' into devFrederik Gladhorn2014-10-201-10/+0
|\| | | | | | | Change-Id: If7e51514ed6832750e3ad967e4d322ccf920d2bb
| * Remove QOpenGLContextPrivate::globalShareContextJocelyn Turcotte2014-10-201-10/+0
| | | | | | | | | | | | | | | | This has previously been replaced with qt_gl_global_share_context and all using code has been ported to the new name at this point. Change-Id: I13832f583456891dd057a7b414f45ec3e83f5698 Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>
* | eglfs: Add support for systems without pbuffer supportLaszlo Agocs2014-10-101-0/+1
|/ | | | | | | | | Use a small native window and window surface in case the hooks indicate that pbuffer support is not available. Change-Id: I6515309041f0e1e2f5321d59941f35d6ee16dca7 Reviewed-by: Louai Al-Khanji <louai.al-khanji@digia.com> Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>
* Doc: Use title case in section1 titlesNico Vertriest2014-09-301-3/+3
| | | | | | | | Using Python script title-cased.py Task-number: QTBUG-41250 Change-Id: I00d3d7a0b30db7304a7904efd6d63abd9a7b493b Reviewed-by: Topi Reiniö <topi.reinio@digia.com>
* Update license headers and add new license filesMatti Paaso2014-09-241-19/+11
| | | | | | | | | - Renamed LICENSE.LGPL to LICENSE.LGPLv21 - Added LICENSE.LGPLv3 - Removed LICENSE.GPL Change-Id: Iec3406e3eb3f133be549092015cefe33d259a3f2 Reviewed-by: Iikka Eklund <iikka.eklund@digia.com>
* Add an option to share between TLWsLaszlo Agocs2014-09-101-2/+3
| | | | | | Task-number: QTBUG-41191 Change-Id: I510d1631926ed0d9e371703d22229aed92432aa6 Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>
* Merge remote-tracking branch 'origin/5.3' into 5.4Frederik Gladhorn2014-08-121-0/+4
|\ | | | | | | | | | | | | | | | | | | | | | | Manually included changes from 3a347a4e70e5a10ee92dd2578316c926a399e894 in src/opengl/qgl.cpp. Conflicts: src/opengl/qgl_qpa.cpp src/plugins/platforms/android/androidjnimain.cpp Change-Id: Ic26b58ee587d4884c9d0fba45c5a94b5a45ee929
| * OpenGL: destroy QGLContext allocated by QGLContext::fromOpenGLContextDavid Fries2014-08-051-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | QGLContext already uses ownContext to identify when it "owns" QOpenGLContext and will delete QOpenGLContext when needed. In the other way QGLContext::fromOpenGLContext creates a QGLContext for QOpenGLContext, and is now using qGLContextDeleteFunction to identify if QOpenGLContext "owns" QGLContext by QGLContext only passing a delete function when QOpenGLContext should delete QGLContext, and by QOpenGLContext calling deleteQGLContext() from destory() to do the destruction avoiding the previous leak and sometimes crash on exit. Change-Id: I65e791776e99b456e4d0c70fc5b5cdb33c975893 Task-number: QTBUG-40286 Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>
* | Add default format to QSurfaceFormatLaszlo Agocs2014-08-081-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add defaultFormat() and setDefaultFormat() statics to QSurfaceFormat. These define the default values for the requestedFormat members of QOpenGLContext, QWindow and QOpenGLWidget (and implicitly QOpenGLWindow, QQuickWindow, etc.) This replaces QQuickWindow::setDefaultFormat() which can now be removed. The main inspiration here is not the convenience (avoiding setFormat() calls for all windows/widgets), but robustness: by setting the format once at the start of the application, all windows and contexts, including the internal share context used by QOpenGLWidget and QQuickWidget, will use the same format, eliminating the possibility of failing due to trying to share between incompatible contexts. Furthermore, since such a functionality is anyway mandatory for QQuickWindow (due to the possibility of creating windows from QML code), extending it to QSurfaceFormat and QOpenGLContext/QWindow is the next logical step. Change-Id: Ie94486adc489d17fecfcebb7050fecedffd2688b Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
* | Document the destroy/create behavior of QOpenGLContext::create()Laszlo Agocs2014-08-061-0/+3
| | | | | | | | | | | | | | | | | | This is not obvious since in some other classes with similar design subsequent create() calls are ignored. In some others it results in a warning. In case of QOpenGLContext it leads to recreating. Therefore it must be documented. Change-Id: I16efa73ebae15b3ffc26832d8d5cc2cd5d0ed469 Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
* | Rename globalShareContext to qt_gl_global_share_contextJocelyn Turcotte2014-08-041-11/+23
| | | | | | | | | | | | | | | | | | | | This makes it easier to forward-declare the exported symbol from other Qt modules without having to include the private headers. This keeps the old API until dependent submodules are updated. Change-Id: I08310a684b79f2f612f2ce897a601ff74178bee6 Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>
* | Fix a crash when using QtQuickControls with core profileBerthold Krevert2014-05-221-4/+25
| | | | | | | | | | | | | | | | | | | | QOpenGLContext::versionFunctions returns 0, if a QOpenGLFunctions object for a legacy OpenGL version is requested while using the core profile. This leads to a crash QOpenGLContextPrivate::maxTextureSize() Change-Id: I32845643094336cebcc666806a411524fe3e869b Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com> Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
* | Merge remote-tracking branch 'origin/stable' into devFrederik Gladhorn2014-05-131-1/+2
|\| | | | | | | | | | | | | Conflicts: src/gui/kernel/qguiapplication.cpp Change-Id: Ibe75603dc8a51769db6550ea3f07bc8d19b0be85
| * Avoid corruption in Q(Open)GLFunctions when used on multiple threadsLaszlo Agocs2014-05-091-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Using Q(Open)GLFunctions concurrently on multiple threads had some issues due to incorrect synchronization: The m_groups list in the QOpenGLMultiGroupSharedResource, in which the Q(Open)GLFunctions instance is stored, became corrupted under certain scenarios, for example in the tst_qglthreads autotest and any two threads that happen to enter an initializeOpenGLFunctions() or QOpenGLContext::functions() call concurrently. Locking in value() has been introduced in 666c25c089acf7fcc9e9a6b7665074c6286d604e to fix such issues, however using the context group's mutex is not enough: that still allows two threads using two contexts with a different context group to concurrently enter insert(). Instead, the MultiGroupSharedResource has to have its own mutex to protect its own member variables. Task-number: QTBUG-38771 Change-Id: If01c44c2084b95e487bc9146576ca180ed8044da Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>
* | Merge remote-tracking branch 'origin/stable' into devFrederik Gladhorn2014-05-061-10/+16
|\| | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: mkspecs/qnx-x86-qcc/qplatformdefs.h src/corelib/global/qglobal.h src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp src/opengl/qgl.cpp src/opengl/qglpixelbuffer.cpp src/opengl/qglshaderprogram.cpp tests/auto/opengl/qglthreads/tst_qglthreads.cpp Change-Id: Iaba137884d3526a139000ca26fee02bb27b5cdb5
| * Rename new QOpenGLContext APIsLaszlo Agocs2014-04-251-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | isES() becomes isOpenGLES(). The library type enums are changed DesktopGL -> LibGL and GLES2 -> LibGLES. This removes the now unnecessary version number, the confusing "desktop" term and provides better readability. The old function/values are kept until the related qtdeclarative changes are integrated. Task-number: QTBUG-38564 Change-Id: Ibb0a1209985f1ce4bb9451f9b7b093c2b68a6505 Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
| * Remove internal public function from QOpenGLFunctionsLaszlo Agocs2014-04-171-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | QOpenGLContext uses glGetTexLevelParameteriv on desktop OpenGL and so it got recently added to QOpenGLFunctions as part of the dynamic GL loading support. This is unnecessary since such desktop-only code can use the versioned wrappers (QOpenGLFunction_1_0 for example). In related upcoming changes in 5.4 the function is removed. This change has to be backported to 5.3 to prevent introducing this public API unnecessarily. Change-Id: I6fc331091e4e6416e430bf985afcc17a392fc2e3 Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
* | Add public and QPA APIs for adapting existing OpenGL contextsLaszlo Agocs2014-04-241-1/+61
|/ | | | | | | | | | | | | For now only xcb on GLX is supported. Other platforms will follow later. Add also some missing documentation for the platform OpenGL context factory functions. [ChangeLog] QOpenGLContext is now able to adopt existing native contexts. Task-number: QTBUG-37552 Change-Id: I5dd959f102df178f646b2df5989203b5dc6de376 Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>
* Correct QOpenGLContext::versionFunctions() docsLaszlo Agocs2014-04-091-4/+6
| | | | | | | | | | | The example is incorrect: no context parameter is needed. There was also no mentioning of the fact the the context must be current at the time of calling initializeOpenGLFunctions(). This is corrected too. Change-Id: If8695140096e4b4f84927579c099b0af80750703 Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
* purge vestiges of opengl es 1 supportOswald Buddenhagen2014-04-041-3/+0
| | | | | | | | amends 0d5170256c1. Change-Id: Ifa178d38f602bb7c66ef13334673ff47e332af5b Reviewed-by: Jørgen Lind <jorgen.lind@digia.com> Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>
* Add a way to share context between QtQuick and QtWidgetsJocelyn Turcotte2014-04-021-0/+20
| | | | | | | | | | | | | This will replace QSGContext::setSharedOpenGLContext. To be able to allow sharing the Chromium GL context with both QWebEngineView and QQuickWebEngineView, we need some way of setting the sharing within QtWidgets and QtQuick. Since they don't depend on one another this patch allows the sharing context to be set through QtGui. Change-Id: I91b365dd06ec925b4c5a99ac82c222778781fe8e Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>
* Fix some documentation errors.Friedemann Kleint2014-03-241-2/+2
| | | | | | | | Correct links and fix typos, remove obsolete documentation, fix some snippets, mark some classes as internal. Change-Id: I9a3266605f060783413d32740057a57a820c8929 Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>
* Return false on context creation failureLaszlo Agocs2014-03-201-3/+3
| | | | | | | | | | | | | | Make QOpenGLContext::create() return false when the native context could not be initialized. This way the return value and isValid() become equivalent. Relying on on having a non-NULL platform context is not enough, many platforms will return a new instance even if the underlying platform code failed to create a native context. To ensure that a platform context is really usable, isValid() has to be checked too. Change-Id: I6b4e9fdb24347ad52fbd6edbb8d144d51e16c301 Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
* Docs: Clarify QOpenGLFunctions::functions()Laszlo Agocs2014-03-151-0/+3
| | | | | | Change-Id: Ifb6fdc3de7f93a1632b396eaaa14078546cac4dd Reviewed-by: Jørgen Lind <jorgen.lind@digia.com> Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
* Doc: correction link, example and parameter issues qtbaseNico Vertriest2014-03-101-7/+8
| | | | | | | | | | | | | Moved codecs folder to qtbase/examples Corrected quote in dropsite.qdoc Replaced snippet statement by include statement Added doc for undocumented parameters Task-number: QTBUG-34749 Change-Id: If4de95b8d39e5680fd0f63f8d2b6685a4b0a8052 Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com> Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
* Avoid using direct OpenGL calls in gui and widgetsLaszlo Agocs2014-03-101-7/+8
| | | | | Change-Id: I5d88a2e204ca23e178a4e3044b9cb13392c3e763 Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>
* Clarify QOpenGLContext::format() docsLaszlo Agocs2014-03-071-0/+14
| | | | | | | | Avoid unrealistic expectations where applications would assume that requestedFormat() == format(). Change-Id: I12dcfda3d86ce26f1cae9771b1fe2203291864db Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
* Doc fixPaul Olav Tvete2014-03-061-6/+4
| | | | | | | | QOpenGLContext::destroy() is private. The recommended way to free resources temporarily is simply to delete the context. Change-Id: I0d59b55afb209d56405f3584e4645bd4718790af Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
* Dynamic GL: Query gl handle and type via the native interfaceLaszlo Agocs2014-03-061-1/+15
| | | | | | Change-Id: I7ca5beaeb57ee2e4e9c175f53ac32371d1f6b5ed Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com> Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>
* Dynamic GL: remove exporting symbolsLaszlo Agocs2014-03-041-3/+73
| | | | | | | | | | | | | | | | | | | | | Remove the opengl proxy for now. Later it will either be moved into a separate library or replaced by a QOpenGLFunctions-based approach. This means that the -opengl dynamic configuration is not usable for the time being. The rest of the enablers remain in place. The convenience function QOpenGLFunctions::isES() is now moved to QOpenGLContext and is changed to check the renderable type. This is extremely useful since besides supporting dynamic GL it solves also the problem of GL_ARB_ES2_compatibility (i.e. it triggers the real ES path when creating an ES-compatible context with a desktop OpenGL implementation). Task-number: QTBUG-36483 Task-number: QTBUG-37172 Change-Id: I045be3fc16e9043e1528cf48e6bf0903da4fa7ca Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com> Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>
* Dynamic GL switch on WindowsLaszlo Agocs2014-02-141-21/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patch introduces a new build configuration on Windows which can be requested by passing -opengl dynamic to configure. Platforms other than Windows (including WinRT) are not affected. The existing Angle and desktop configurations are not affected. These continue to function as before and Angle remains the default. In the future, when all modules have added support for the dynamic path, as described below, the default configuration could be changed to be the dynamic one. This would allow providing a single set of binaries in the official builds instead of the current two. When requesting dynamic GL, Angle is built but QT_OPENGL_ES[_2] are never defined. Instead, the code path that has traditionally been desktop GL only becomes the dynamic path that has to do runtime checks. Qt modules and applications are not linked to opengl32.dll or libegl/glesv2.dll in this case. Instead, QtGui exports all necessary egl/egl/gl functions which will, under the hood, forward all requests to a dynamically loaded EGL/WGL/GL implementation. Porting guide (better said, changes needed to prepare your code to work with dynamic GL builds when the fallback to Angle is utilized): 1. In !QT_OPENGL_ES[_2] code branches use QOpenGLFunctions::isES() to differentiate between desktop and ES where needed. Keep in mind that it is the desktop GL header (plus qopenglext.h) that is included, not the GLES one. QtGui's proxy will handle some differences, for example calling glClearDepth will route to glClearDepthf when needed. The built-in eglGetProcAddress is able to retrieve pointers for standard GLES2 functions too so code resolving OpenGL 2 functions will function in any case. 2. QT_CONFIG will contain "opengl" and "dynamicgl" in dynamic builds, but never "angle" or "opengles2". 3. The preprocessor define QT_OPENGL_DYNAMIC is also available in dynamic builds. The usage of this is strongly discouraged and should not be needed anywhere except for QtGui and the platform plugin. 4. Code in need of the library handle can use QOpenGLFunctions::platformGLHandle(). The decision on which library to load is currently based on a simple test that creates a dummy window/context and tries to resolve an OpenGL 2 function. If this fails, it goes for Angle. This seems to work well on Win7 PCs for example that do not have proper graphics drivers providing OpenGL installed but are D3D9 capable using the default drivers. Setting QT_OPENGL to desktop or angle skips the test and forces usage of the given GL. There are also two new application attributes that could be used for the same purpose. If Angle is requested but the libraries are not present, desktop is tried. If desktop is requested, or if angle is requested but nothing works, the EGL/WGL functions will still be callable but will return 0. This conveniently means that eglInitialize() and such will report a failure. Debug messages can be enabled by setting QT_OPENGLPROXY_DEBUG. This will tell which implementation is chosen. The textures example application is ported to OpenGL 2, the GL 1 code path is removed. [ChangeLog][QtGui] Qt builds on Windows can now be configured for dynamic loading of the OpenGL implementation. This can be requested by passing -opengl dynamic to configure. In this mode no modules will link to opengl32.dll or Angle's libegl/libglesv2. Instead, QtGui will dynamically choose between desktop and Angle during the first GL/EGL/WGL call. This allows deploying applications with a single set of Qt libraries with the ability of transparently falling back to Angle in case the opengl32.dll is not suitable, due to missing graphics drivers for example. Task-number: QTBUG-36483 Change-Id: I716fdebbf60b355b7d9ef57d1e069eef366b4ab9 Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com> Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>
* Enabling QQuickWidget and QOpenGLWidgetPaul Olav Tvete2014-02-121-5/+4
| | | | | | | | | Enable child widgets (without a native window) that render to an FBO and are composed with the raster backingstore by the platform plugin. A preliminary version of QOpenGLWidget is included as private API. Change-Id: I8f984a4d7db285069ce3d6564707942c823d890d Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>
* Enable QOpenGLTexture for OpenGL ES 2Jorgen Lind2013-11-141-6/+0
| | | | | Change-Id: I3ec2b7af303070c92e86c0f5ca729eb1a1731682 Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
* Doc: Fix broken linksSze Howe Koh2013-11-051-3/+3
| | | | | | | | Task-number: QTBUG-33360 Change-Id: Ic944cb2f575c35ebad64852ef5fc44a50ac03571 Reviewed-by: Jerome Pasion <jerome.pasion@digia.com> Reviewed-by: Topi Reiniö <topi.reinio@digia.com>
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