qt5base-lts/examples
Laszlo Agocs 611558d877 Modernize the OpenGL examples
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>
2014-08-12 07:47:23 +02:00
..
aggregate install a sane top-level examples.pro file 2012-12-11 13:37:57 +01:00
dbus doc: Updated Qt D-Bus Examples. 2014-05-28 16:52:04 +02:00
embedded expand tabs and related whitespace fixes in *.{cpp,h,qdoc} 2014-01-13 22:46:50 +01:00
gui Examples: Add Q_DECL_OVERRIDE to overridden functions 2014-07-15 08:44:44 +02:00
ipc Doc: Move IPC example documentation 2014-03-27 15:16:20 +01:00
json Add json/savegame example. 2013-08-22 19:14:03 +02:00
network Examples: Add Q_DECL_OVERRIDE to overridden functions 2014-07-15 08:44:44 +02:00
opengl Modernize the OpenGL examples 2014-08-12 07:47:23 +02:00
qmake Update copyright year in Digia's license headers 2013-01-18 09:07:35 +01:00
qpa Introduce QRasterWindow 2014-08-05 16:47:42 +02:00
qtconcurrent remove remaining non-concurrent branches from concurrent samples 2013-10-29 15:37:30 +01:00
qtestlib Whitespace cleanup: remove trailing whitespace 2013-03-16 20:22:50 +01:00
sql Examples: Add Q_DECL_OVERRIDE to overridden functions 2014-07-15 08:44:44 +02:00
threads Examples: Add Q_DECL_OVERRIDE to overridden functions 2014-07-15 08:44:44 +02:00
tools Examples: Add Q_DECL_OVERRIDE to overridden functions 2014-07-15 08:44:44 +02:00
touch Examples: Add Q_DECL_OVERRIDE to overridden functions 2014-07-15 08:44:44 +02:00
webkit/webkit-guide Changed digia contact details to */legal, updated licenses 2013-07-20 11:21:46 +02:00
widgets Make QOpenGLWidget public 2014-08-01 17:13:59 +02:00
xml Examples: Add Q_DECL_OVERRIDE to overridden functions 2014-07-15 08:44:44 +02:00
examples.pro Doc: corrected link/example errors 2014-01-31 16:18:07 +01:00
README Remove more references to demos. 2011-07-08 15:36:26 +02:00

Qt is supplied with a number of example applications that have been
written to provide developers with examples of the Qt API in use,
highlight good programming practice, and showcase features found in each of
Qt's core technologies.


Documentation for examples can be found in the Examples section
of the Qt documentation.