I found that the compiled sample qt/OTC Overview runs on a Linux system and only supports running on X11 protocol desktops, not on Wayland protocol desktops.
gkv311 n Fri, 07/18/2025 - 08:32
So far, OCCT 3D Viewer relies on GLX to create OpenGL context or EGL+X11 window. Therefore, you'll need XWayland to run sample applications when using Wayland desktop.
It works on Qt & Wayland if you use this OCCT patch and build with USE_XLIB off, then and initialize the EGL context as shown in this change to gkv311's Qt sample
Fri, 07/18/2025 - 08:32
So far, OCCT 3D Viewer relies on GLX to create OpenGL context or EGL+X11 window. Therefore, you'll need XWayland to run sample applications when using Wayland desktop.
Fri, 07/18/2025 - 12:22
Thank you for your reply. I'll give xwayland a try
Tue, 07/29/2025 - 15:33
It works on Qt & Wayland if you use this OCCT patch and build with USE_XLIB off, then and initialize the EGL context as shown in this change to gkv311's Qt sample