Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Get Qt Extensions
  • Unsolved
Collapse
Brand Logo
  1. Home
  2. Qt Development
  3. Mobile and Embedded
  4. eglfs is not work
QtWS25 Last Chance

eglfs is not work

Scheduled Pinned Locked Moved Solved Mobile and Embedded
egflsnot displaylinuxfbglfs is not wor
4 Posts 2 Posters 2.7k Views
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • X Offline
    X Offline
    xuwuyi
    wrote on last edited by xuwuyi
    #1

    Cross compile Qt 5.9.0 for raspberry pi 3 problem: eglfs is not work, it is not display my 3.5 inch touchscreen, linuxfb is ok

    the log:
    pi@raspberrypi:~$ ./openglwindow
    qt.qpa.egldeviceintegration: EGL device integration plugin keys: ("eglfs_brcm", "eglfs_emu")
    qt.qpa.egldeviceintegration: EGL device integration plugin keys (sorted): ("eglfs_brcm", "eglfs_emu")
    qt.qpa.egldeviceintegration: Trying to load device EGL integration "eglfs_brcm"
    qt.qpa.egldeviceintegration: Using EGL device integration "eglfs_brcm"
    Unable to query physical screen size, defaulting to 100 dpi.
    To override, set QT_QPA_EGLFS_PHYSICAL_WIDTH and QT_QPA_EGLFS_PHYSICAL_HEIGHT (in millimeters).
    qt.qpa.input: evdevkeyboard: Using device discovery
    qt.qpa.input: static device discovery for type QFlagsQDeviceDiscovery::QDeviceType(Device_Keyboard)
    qt.qpa.input: doing static device discovery for "/dev/input/event0"
    qt.qpa.input: doing static device discovery for "/dev/input/mice"
    qt.qpa.input: doing static device discovery for "/dev/input/mouse0"
    qt.qpa.input: Found matching devices ()
    qt.qpa.input: evdevmouse: Using device discovery
    qt.qpa.input: static device discovery for type QFlagsQDeviceDiscovery::QDeviceType(Device_Mouse|Device_Touchpad)
    qt.qpa.input: doing static device discovery for "/dev/input/event0"
    qt.qpa.input: doing static device discovery for "/dev/input/mice"
    qt.qpa.input: doing static device discovery for "/dev/input/mouse0"
    qt.qpa.input: Found matching devices ()
    qt.qpa.input: evdevtouch: Using device discovery
    qt.qpa.input: static device discovery for type QFlagsQDeviceDiscovery::QDeviceType(Device_Touchpad|Device_Touchscreen)
    qt.qpa.input: doing static device discovery for "/dev/input/event0"
    qt.qpa.input: Found touchscreen at "/dev/input/event0"
    qt.qpa.input: doing static device discovery for "/dev/input/mice"
    qt.qpa.input: doing static device discovery for "/dev/input/mouse0"
    qt.qpa.input: Found matching devices ("/dev/input/event0")
    qt.qpa.input: evdevtouch: Adding device at "/dev/input/event0"
    qt.qpa.input: evdevtouch: Using device /dev/input/event0
    qt.qpa.input: evdevtouch: /dev/input/event0: Protocol type A (single), filtered=no
    qt.qpa.input: evdevtouch: /dev/input/event0: min X: 0 max X: 4095
    qt.qpa.input: evdevtouch: /dev/input/event0: min Y: 0 max Y: 4095
    qt.qpa.input: evdevtouch: /dev/input/event0: min pressure: 0 max pressure: 65535
    qt.qpa.input: evdevtouch: /dev/input/event0: device name: ADS7846 Touchscreen
    Created context for format QSurfaceFormat(version 2.0, options QFlagsQSurfaceFormat::FormatOption(), depthBufferSize -1, redBufferSize -1, greenBufferSize -1, blueBufferSize -1, alphaBufferSize -1, stencilBufferSize -1, samples 16, swapBehavior QSurfaceFormat::SwapBehavior(DefaultSwapBehavior), swapInterval 1, profile QSurfaceFormat::OpenGLContextProfile(NoProfile)) with config:
    EGL_BUFFER_SIZE: 16
    EGL_ALPHA_SIZE: 0
    EGL_BLUE_SIZE: 5
    EGL_GREEN_SIZE: 6
    EGL_RED_SIZE: 5
    EGL_DEPTH_SIZE: 0
    EGL_STENCIL_SIZE: 0
    EGL_CONFIG_CAVEAT: 12344
    EGL_CONFIG_ID: 24
    EGL_LEVEL: 0
    EGL_MAX_PBUFFER_HEIGHT: 2048
    EGL_MAX_PBUFFER_PIXELS: 4194304
    EGL_MAX_PBUFFER_WIDTH: 2048
    EGL_NATIVE_RENDERABLE: 1
    EGL_NATIVE_VISUAL_ID: 107544
    EGL_NATIVE_VISUAL_TYPE: 12344
    EGL_SAMPLES: 4
    EGL_SAMPLE_BUFFERS: 1
    EGL_SURFACE_TYPE: 1639
    EGL_TRANSPARENT_TYPE: 12344
    EGL_TRANSPARENT_BLUE_VALUE: 0
    EGL_TRANSPARENT_GREEN_VALUE: 0
    EGL_TRANSPARENT_RED_VALUE: 0
    EGL_BIND_TO_TEXTURE_RGB: 0
    EGL_BIND_TO_TEXTURE_RGBA: 0
    EGL_MIN_SWAP_INTERVAL: 0
    EGL_MAX_SWAP_INTERVAL: 2147483647
    qt.qpa.input: evdevtouch: Updating QInputDeviceManager device count: 1 touch devices, 0 pending handler(s)

    no error in log,but the touchscrren is not any display,who can help me?
    Forgive my poor English

    1 Reply Last reply
    0
    • sneubertS Offline
      sneubertS Offline
      sneubert
      wrote on last edited by
      #2

      You can use the eglfs plugin on rpi due to the bcrm chip hardware restrictions only on hdmi or dsi connected displays. If you have a i2c or spi display you can only use linuxfb.
      One workaround we used was to run the application on eglfs without a hdmi display and use framebuffer copy (https://github.com/tasanakorn/rpi-fbcp) to mirrow the eglfs application to a spi display. This was working quit well.

      X 2 Replies Last reply
      1
      • sneubertS sneubert

        You can use the eglfs plugin on rpi due to the bcrm chip hardware restrictions only on hdmi or dsi connected displays. If you have a i2c or spi display you can only use linuxfb.
        One workaround we used was to run the application on eglfs without a hdmi display and use framebuffer copy (https://github.com/tasanakorn/rpi-fbcp) to mirrow the eglfs application to a spi display. This was working quit well.

        X Offline
        X Offline
        xuwuyi
        wrote on last edited by
        #3

        @sneubert Thank you for your reply. I'll try it

        1 Reply Last reply
        0
        • sneubertS sneubert

          You can use the eglfs plugin on rpi due to the bcrm chip hardware restrictions only on hdmi or dsi connected displays. If you have a i2c or spi display you can only use linuxfb.
          One workaround we used was to run the application on eglfs without a hdmi display and use framebuffer copy (https://github.com/tasanakorn/rpi-fbcp) to mirrow the eglfs application to a spi display. This was working quit well.

          X Offline
          X Offline
          xuwuyi
          wrote on last edited by
          #4

          @sneubert Thank you again,it work well

          1 Reply Last reply
          0

          • Login

          • Login or register to search.
          • First post
            Last post
          0
          • Categories
          • Recent
          • Tags
          • Popular
          • Users
          • Groups
          • Search
          • Get Qt Extensions
          • Unsolved