qiurui
/
qtbase
mirror of https://github.com/qt/qtbase.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Support running Qt apps on the integrated GPU 

By default starting an app that uses OpenGL will
switch machines with dual graphics hardware over
to the discrete GPU. This causes a delay at startup
and possibly increased power usage.

It is possible to prevent the switch:

1) Add the NSOpenGLPFAAllowOfflineRenderers attribute
to the OpenGL pixel format. This is done in this commit.

2) Add <key>NSSupportsAutomaticGraphicsSwitching</key><true/>
to the apps Info.plist. This final opt-in is left to
the app author.

Change-Id: Ibff56fd7770a6b7f8041c8bb60bf290eed24330a
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@digia.com>
This commit is contained in:
Morten Johan Sørvig 2013-12-12 14:17:03 +01:00 committed by The Qt Project
parent db73862302
commit 8166a34fc5
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
src/platformsupport/cglconvenience/cglconvenience.mm
View File

@ -121,6 +121,7 @@ void *qcgl_createNSOpenGLPixelFormat(const QSurfaceFormat &format)
<< NSOpenGLPFASamples << (NSOpenGLPixelFormatAttribute) format.samples(); << NSOpenGLPFASamples << (NSOpenGLPixelFormatAttribute) format.samples();
} }
attrs << NSOpenGLPFAAllowOfflineRenderers;
attrs << 0; attrs << 0;
NSOpenGLPixelFormat* pixelFormat = [[NSOpenGLPixelFormat alloc] initWithAttributes:attrs.constData()]; NSOpenGLPixelFormat* pixelFormat = [[NSOpenGLPixelFormat alloc] initWithAttributes:attrs.constData()];