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Document AA_* that must be set before app construction

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After seeing multiple apps falling into the trap of setting
AA_ShareOpenGLContexts after constructing the q(gui)app, it
is time to add some more docs regarding this.

Task-number: QTBUG-47637
Change-Id: I01b5be0980d038efc56fd649d4a1fee26c33aef8
Reviewed-by: Andy Shaw <andy.shaw@theqtcompany.com>
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
This commit is contained in:
Laszlo Agocs 2015-03-24 17:42:39 +01:00
parent 9b27f27d17
commit 89cb92f838
1 changed files with 8 additions and 5 deletions
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13
src/corelib/global/qnamespace.qdoc
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@ -170,12 +170,13 @@
\value AA_UseDesktopOpenGL Forces the usage of desktop OpenGL (for example,
\e opengl32.dll or \e libGL.so) on platforms that use dynamic loading
of the OpenGL implementation.
This value has been added in Qt 5.3.
of the OpenGL implementation. This value has been added in Qt 5.3.
This attribute must be set before Q(Gui)Application is constructed.
\value AA_UseOpenGLES Forces the usage of OpenGL ES 2.0 or higher on
platforms that use dynamic loading of the OpenGL implementation.
This value has been added in Qt 5.3.
This value has been added in Qt 5.3. This attribute must be set
before Q(Gui)Application is constructed.
\value AA_UseSoftwareOpenGL Forces the usage of a software based OpenGL
implementation on platforms that use dynamic loading of the OpenGL
@ -186,13 +187,15 @@
\c opengl32sw.dll and can be overridden by setting the environment
variable \e QT_OPENGL_DLL. See the platform-specific pages, for
instance \l{Qt for Windows}, for more information. This value has
been added in Qt 5.4.
been added in Qt 5.4. This attribute must be set before
Q(Gui)Application is constructed.
\value AA_ShareOpenGLContexts Enables resource sharing between the OpenGL
contexts used by classes like QOpenGLWidget and QQuickWidget. This
allows sharing OpenGL resources, like textures, between QOpenGLWidget
instances that belong to different top-level windows. This value has
been added in Qt 5.4.
been added in Qt 5.4. This attribute must be set before
Q(Gui)Application is constructed.
\value AA_SetPalette Indicates whether a palette was explicitly set on the
QApplication/QGuiApplication. This value has been added in Qt 5.5.