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sashikknox In some cases, need create EGLWindow with SDLWindow. In X11 i can get pointer to NativeWindow from **struct SDL_SysWMinfo wmInfo** ```C++ struct SDL_SysWMinfo wmInfo; SDL_GetWindowWMInfo(ptSDLWindow, &wmInfo) #if defined(__unix__) && defined(SDL_VIDEO_DRIVER_X11) nativeWindow=(EGLNativeWindowType)wmInfo.info.x11.window; nativeDisplay=(EGLNativeDisplayType)wmInfo.info.x11.display; #endif ``` than i can create EGLSurface ``` eglCreateWindowSurface(nativeDisplay, EGL_CONFIG, nativeWindow, SURFACE_ATTRIBUTES); ``` in Wayland i can do it with same way, just need pointer to **EGLWindow**, we already have pointer to **wl_display** from **SDL_sysWMInfo**, need add to **wl** struct in SDL_SysWMInfo another pointer to **struct wl_egl_window *egl_window;**. And in wayland backend, in function **Wayland_GetWindowWMInfo** return pointer to **egl_window** from **SDL_WindowData** Now i use patched statically built SDL2 in port of Quake 2 GLES2 for SailfishOS (it use QtWayland): link to SDL2 commit and changed string for patch: -6858a618cd-b1e29e87b9/SDL2/src/video/wayland/SDL_waylandwindow.c (L463)link to use in Quake2 port: 1. here i get pointer to EGLNativeWindowType:6d94fedb1b/Engine/Sources/Compatibility/OpenGLES/EGLWrapper.c (L319)2. then use it for create EGLSurface:6d94fedb1b/Engine/Sources/Compatibility/OpenGLES/EGLWrapper.c (L391)