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Laszlo Agocs b46ffbca0c Fix up QOpenGLWidget transparency support 
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>
2015-09-24 12:51:37 +00:00
..
aggregate install a sane top-level examples.pro file 2012-12-11 13:37:57 +01:00
corelib fix usage of wince scope 2015-06-05 10:29:10 +00:00
dbus Updated BSD licensed file headers 2015-02-15 07:41:17 +00:00
embedded examples: migrate to QString::asprintf 2015-02-12 19:40:09 +00:00
gui Updated BSD licensed file headers 2015-02-15 07:41:17 +00:00
network fix usage of wince scope 2015-06-05 10:29:10 +00:00
opengl Fix up QOpenGLWidget transparency support 2015-09-24 12:51:37 +00:00
qmake Updated BSD licensed file headers 2015-02-15 07:41:17 +00:00
qpa Updated BSD licensed file headers 2015-02-15 07:41:17 +00:00
qtconcurrent QtConcurrent example: remove unneeded explicit template type 2015-07-17 14:29:42 +00:00
qtestlib Updated BSD licensed file headers 2015-02-15 07:41:17 +00:00
sql Merge remote-tracking branch 'origin/5.5' into dev 2015-07-01 11:05:26 +02:00
touch fingerpaint example: Use the maximum diameter for the touch spot by default 2015-05-23 11:28:00 +00:00
webkit/webkit-guide Remove exec bits from files that should not be executable 2015-06-07 22:50:19 +00:00
widgets Polish the settings editor example. 2015-09-23 13:28:02 +00:00
xml Merge remote-tracking branch 'origin/5.5' into dev 2015-07-01 11:05:26 +02:00
examples.pro Move Qt Core examples under a common subdirectory 2014-10-17 14:57:13 +02:00
README Remove more references to demos. 2011-07-08 15:36:26 +02:00

README 

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.