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* Cleanup QtOpenGL examplesChristian Ehrlicher2019-09-306-23/+23
| | | | | | | | | | | Cleanup the OpenGL examples - use nullptr (clang-tidy) - use member-initialization - avoid redundant checks for != nullptr when deleting a pointer Change-Id: I3e4702690ed79e71c3e952d51ceef83b907b45b7 Reviewed-by: Edward Welbourne <edward.welbourne@qt.io> Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
* Hello GL2 example: Fix exit crashFriedemann Kleint2017-09-051-0/+2
| | | | | | | | Bail out of cleanup() when run 2nd time. Task-number: QTBUG-60626 Change-Id: I8a9be2fcfb0e8a5584ce8ed7952affff24bd2a33 Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
* OpenGL examples: Introduce QCommandLineParserFriedemann Kleint2017-09-053-6/+31
| | | | | | Task-number: QTBUG-60626 Change-Id: I6d102327c89206fcdce10f3ac04e112270b11ad2 Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
* Examples: Replace 'Q_DECL_OVERRIDE' by 'override'hjk2016-06-152-8/+8
| | | | | | | | Examples should demonstrate best practice, and we can use the keyword directly nowadays. Change-Id: I1f122e5caceca17290757ffbaf3d660e7daa9ae4 Reviewed-by: Topi Reiniö <topi.reinio@theqtcompany.com>
* Unify license header usage.Jani Heikkinen2016-03-299-27/+117
| | | | | | | | | 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>
* Fix up QOpenGLWidget transparency supportLaszlo Agocs2015-09-242-2/+9
| | | | | | | | | | | | | | | The glColorMask call was troublesome. In addition, the Qt::WA_TranslucentBackground was misinterpreted and recommended misleadingly in the documentation. The hellogl2 example's --transparent argument was disfunctional in practice. Replace glColorMask with glBlendFuncSeparate. The hellogl2 example and the docs are now corrected wrt enabling semi-transparency in a QOpenGLWidget that is not a top-level (which is the most common case). Task-number: QTBUG-47276 Change-Id: I6f40e732d455f5efcf158649ac9a52ff9f240e85 Reviewed-by: Allan Sandfeld Jensen <allan.jensen@theqtcompany.com> Reviewed-by: Gunnar Sletta <gunnar@sletta.org>
* Updated Hello GL2 Example to new Signal/Slot syntaxBenjamin Summerton2015-06-292-8/+8
| | | | | | | | | The Hello GL2 Example was using the older Signal/Slot syntax that made use of the macros `SIGNAL()` and `SLOT()`. I changed it to the newer one. Change-Id: I8e55015383847a04b07f751fe9fc94b81956a896 Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>
* Updated BSD licensed file headersJani Heikkinen2015-02-159-27/+27
| | | | | Change-Id: I6441ff931dbd33b698d762e6f6784898f3f60fe7 Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
* Update copyright headersJani Heikkinen2015-02-119-45/+45
| | | | | | | | | | | | | | | | | | 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>
* Fix composition for windows with alphaLaszlo Agocs2014-08-132-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | While we will cover the entire surface with our textured quads, the clear is still necessary in order to make top-levels with TranslucentBackground render correctly: We don't want to blend transparent areas with undefined content that is in the surface's framebuffer. Blending is problematic for alpha values. We now prevent the blended alpha from being written out. This ensures that in examples like qquickviewcomparison, where the backingstore image contains an alpha of 0.5 while the QQuickWidget texture 1.0, the result is still an alpha value of 1.0 in the final image. Writing out an alpha of 0.5 would break on systems where windows get an alpha buffer by default. hellogl2 can now take a --transparent parameter which makes the QOpenGLWidget being cleared to transparent in order to verify it works in combination with Qt::WA_TranslucentBackground. The swapped red and blue problem is also corrected. RGBA8888 does not need swizzling. The only format that needs this is RGB32. Task-number: QTBUG-40716 Change-Id: I54a9fd3a91a1b59575b38cdb908835315514e40f Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>
* Modernize the OpenGL examplesLaszlo Agocs2014-08-1210-0/+1012
Change them to use QOpenGLWidget and QOpenGLTexture. Advocate also the usage of VBOs. Hopeless examples, that rely on the fixed pipeline and will not compile or work in ES and dynamic builds, are moved to a "legacy" directory. The documentation pages for these are removed. This long due change avoids the confusion newcomers experience when trying to get started with Qt 5 and OpenGL. hellowindow's behavior is changed to open a single window only by default. The old default behavior, that opened three windows on platforms that supported both MultipleWindows & ThreadedOpenGL, can be requested by passing --multiple. --single is removed since it is the default now. This plays much nicer with drivers that have issues with threading. In addition, say hello to hellogl2. This is the old hellogl example updated to use QOpenGLWidget and OpenGL 2. It also has a mainwindow with multiple (un)dockable widgets containing the OpenGL widgets. This helps testing the behavior when the top-level of the QOpenGLWidget changes and provides a very important example of how to do proper resource management in this case. (must use aboutToBeDestroyed() of the context, since the context goes away and is replaced by a new one on every dock/undock) As a bonus, the logo is now real 3D, no more orthographic nonsense. Launch with --multisample to request 4x MSAA. Launch with --coreprofile to request 3.2 Core. In this particular example the shaders are present in both versions and there is a VAO so the application is functional with core profile contexts. Change-Id: Id780a80cb0708ef164cc172450ed74050f065596 Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
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