QXcbIntegration: Cannot create platform OpenGL context, neither GLX nor EGL are enabled

Nicola Peroni

When I try to run my QML application on a ARM iMx6 target machine using the x11 backend, I notice that objects featuring OpenGL (e.g. DropShadow effect) are not shown.
The following output is printend:

QXcbIntegration: Cannot create platform OpenGL context, neither GLX nor EGL are enabled
QXcbIntegration: Cannot create platform offscreen surface, neither GLX nor EGL are enabled

but my configure output (generated when cross-compile Qt for my target) says something different:

QPA backends:
  DirectFB ............................... no
  EGLFS .................................. yes
  EGLFS details:
    EGLFS OpenWFD ........................ no
    EGLFS i.Mx6 .......................... no
    EGLFS i.Mx6 Wayland .................. no
    EGLFS RCAR ........................... no
    EGLFS EGLDevice ...................... no
    EGLFS GBM ............................ yes
    EGLFS Mali ........................... no
    EGLFS Raspberry Pi ................... no
    EGL on X11 ........................... no
  LinuxFB ................................ no
  VNC .................................... no
  Mir client ............................. no
  X11:
    Using system-provided XCB libraries .. no
    EGL on X11 ........................... no
    Xinput2 .............................. yes
    XCB XKB .............................. yes
    XLib ................................. yes
    XCB render ........................... yes
    XCB GLX .............................. yes
    XCB Xlib ............................. yes
    Using system-provided xkbcommon ...... yes
    Native painting (experimental) ....... yes

So "EGL on X11" is no (I don't really understand why) but "XCB GLX" is yes. So the error message "neither GLX nor EGL are enabled" seems to be wrong.

I'm using Qt 5.10.1.
Can anyone help me?
Thanks in advance

jsulm

@Nicola-Peroni said in QXcbIntegration: Cannot create platform OpenGL context, neither GLX nor EGL are enabled:

So "EGL on X11" is no (I don't really understand why)

You can add -v parameter when you call configure and check the output to see why something is not activated (usually something is missing).

Nicola Peroni

Thanks for the reply, I will check.
Anyway XCB GLX on should be enougth for use OpenGL acceleration, basing on the output log.