在MPSoC ZCU106单板的HDMI-Tx上基于eglfs_kms的运行QT应用程序

按照在MPSoC上运行基于eglfs_kms的QT应用程序, 可以在MPSoC ZCU106单板的DP上基于eglfs_kms的运行QT应用程序。按照在VCUTRD 2020.1 里设置HDMI-TX显示QT界面, 可以在MPSoC ZCU106单板的HDMI-Tx上基于X11的运行QT应用程序。在HDMI-Tx上，基于eglfs_kms的运行QT应用程序，遇到了下列两个错误。

错误1

QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/var/volatile/tmp/runtime-root'
Setting framebuffer size is only available with DRM atomic API
Attribute Qt::AA_ShareOpenGLContexts must be set before QCoreApplication is created.
Could not queue DRM page flip on screen HDMI1 (Invalid argument)
Could not queue DRM page flip on screen HDMI1 (Invalid argument)

错误2

QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/var/volatile/tmp/runtime-root'
Framebuffer size format is invalid.
Attribute Qt::AA_ShareOpenGLContexts must be set before QCoreApplication is created.
Failed to commit atomic request (code=-22)

基于在VCUTRD 2020.1 里设置HDMI-TX显示QT界面做更改后，执行下列命令，可以在MPSoC ZCU106单板的DP上基于eglfs_kms的运行QT应用程序。其中的$display_device和$connector_id，需要根据单板更改。display_device一般是类似a0070000.v_mix的格式，可以通过“dmesg | grep v_mix”查到。$connector_id，可以在“modetest -D $display_device”的输出里查找， 也可以根据检查Linux DRM显示设备ID的脚本 得到。

update-alternatives --install /usr/lib/libMali.so.9.0 libmali /usr/lib/wayland/libMali.so.9.0 90

echo Y > /sys/module/xlnx_mixer/parameters/mixer_primary_enable

modetest -D $display_device -s $connector_id:1920x1080-60@AR24

killall Xorg
cat /run/kms.conf

export QT_QPA_PLATFORM="eglfs"
export QT_QPA_EGLFS_KMS_ATOMIC=1
export QT_QPA_EGLFS_INTEGRATION="eglfs_kms"
export QT_QPA_EGLFS_KMS_CONFIG="/run/kms.conf"
export QT_QPA_EGLFS_DEBUG="1"
export QT_QPA_EGLFS_FORCE888=1

# chmod +x /run/qt5everywheredemo-1.0/QtDemo
# /run/qt5everywheredemo-1.0/QtDemo

ls -l /usr/share/examples/opengl/
/usr/share/examples/opengl/cube/cube
/usr/share/examples/opengl/textures/textures

如果运行失败，有时执行“ctrl+c”还不能退出QT应用程序cube和textures，还需要执行命令“kill -9 ”, 或者“killall -9 cube”，才能让其退出。

上述的/run/kms.conf内容如下:

{
  "device": "/dev/dri/card1",
  "hwcursor": false,
  "pbuffers": true,
  "outputs": [
    {
      "name": "HDMI",
      "mode": "1920x1080"
    }
  ]
}

标签：MPSoC,HDMI,Tx,QPA,应用程序,kms,eglfs,QT
来源： https://www.cnblogs.com/hankfu/p/15294077.html