Raspberry Pi 3 上的 QML 性能

Question

我已经从我的 rasp 中的存储库安装了 Qt5.7。编译我的 qml 程序后，我收到以下消息并且我的 qml 太慢了：

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 驱动程序并向 .pro 添加了 QMAKE_CXXFLAGS += -mthumb-interwork -mthumb -march=armv7 标志，但没有帮助...

Answer 1

您可以尝试启用 Qt Quick Compiler。

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，您可以尝试最新版本的 Qt：

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.

如果您仍然想使用相同的版本，只需在您的 qmake 配置文件中添加：

CONFIG += qtquickcompiler

您还需要添加编译器标志，如 wiki 页面所述：

QMAKE_CXXFLAGS += -mthumb -mthumb-interwork

最后，按照以下步骤启用正确的驱动程序：

打开 raspi-config
转到高级选项
转到 GL 驱动程序
启用 GL（完整 KMS）

Raspberry Pi 3 上的 QML 性能

QML Peformance on Raspberry Pi 3

c++

qt

qml

raspberry-pi3

jit