diff options
| author | Morten Johan Sørvig <morten.sorvig@digia.com> | 2013-12-12 14:17:03 +0100 |
|---|---|---|
| committer | The Qt Project <gerrit-noreply@qt-project.org> | 2014-01-10 13:28:13 +0100 |
| commit | 8166a34fc5dafd56a7a0d29bb6b7ed4db0654a45 (patch) | |
| tree | 6de351c974a4dfad0a33563cb6273a54950871d2 /src | |
| parent | db73862302c41a373e299c482a4f2578909a08ed (diff) | |
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>
Diffstat (limited to 'src')
| -rw-r--r-- | src/platformsupport/cglconvenience/cglconvenience.mm | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/platformsupport/cglconvenience/cglconvenience.mm b/src/platformsupport/cglconvenience/cglconvenience.mm index 12ae5965df..50c39a12e0 100644 --- a/src/platformsupport/cglconvenience/cglconvenience.mm +++ b/src/platformsupport/cglconvenience/cglconvenience.mm @@ -121,6 +121,7 @@ void *qcgl_createNSOpenGLPixelFormat(const QSurfaceFormat &format) << NSOpenGLPFASamples << (NSOpenGLPixelFormatAttribute) format.samples(); } + attrs << NSOpenGLPFAAllowOfflineRenderers; attrs << 0; NSOpenGLPixelFormat* pixelFormat = [[NSOpenGLPixelFormat alloc] initWithAttributes:attrs.constData()]; |