Raspberry Pi 3上的QML性能
我已经从锉刀的仓库中安装了Qt5.7.编译我的qml程序后，我收到以下消息，而我的qml太慢了:
I've installed Qt5.7 from repository in my rasp. After compiling my qml program I'm getting following messages and my qml is too slow:
libEGL warning: DRI2: failed to authenticate
qt5ct: using qt5ct plugin
JIT is disabled for QML. Property bindings and animations will be very slow. Visit https://wiki.qt.io/V4 to learn about possible solutions for your platform.
JIT is disabled for QML. Property bindings and animations will be very slow. Visit https://wiki.qt.io/V4 to learn about possible solutions for your platform.
inotify_add_watch("/home/pi/.config/qt5ct") failed: "No such file or directory"
我还启用了openGL驱动程序，还向.pro添加了QMAKE_CXXFLAGS += -mthumb-interwork -mthumb -march=armv7标志，但没有帮助...
I've also enabled the openGL driver and also added QMAKE_CXXFLAGS += -mthumb-interwork -mthumb -march=armv7 flags to the .pro, but didn't help...
您可以尝试启用 Qt Quick编译器.
Qt Quick编译器是Qt Quick应用程序的开发附加组件，它使您可以将QML源代码编译为最终的二进制文件.
The Qt Quick Compiler is a development add-on for Qt Quick applications which allows you to compile QML source code into the final binary.
根据官方文档，您可以尝试使用最新版本的Qt:
You can try a recent version of Qt, according to the official docs:
从Qt版本5.11开始，Qt Quick编译器的功能已集成到Qt Quick模块本身中.在早期的Qt长期支持版本中，仍然可以使用此单独的附件.
Since Qt version 5.11, the functionality of the Qt Quick Compiler has been integrated into the Qt Quick module itself. This separate add-on remains available in the earlier long term support releases of Qt.
如果仍要使用相同版本，只需将其添加到qmake配置文件中即可:
If you still want to use the same version, just add to your qmake configuration file:
CONFIG += qtquickcompiler
您还需要添加编译器标志，如Wiki页面所述:
You also need to add the compiler flags, as mentioned on the wiki page:
QMAKE_CXXFLAGS += -mthumb -mthumb-interwork
最后，请按照以下步骤启用适当的驱动程序:
Finally, enable the proper driver by following these steps:
- 打开raspi-config
- 转到高级选项"
- 转到GL驱动程序
- 启用GL(完整KMS)