EGLint attr[] =
    {
        EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
        EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
        EGL_RED_SIZE, 8,
        EGL_GREEN_SIZE, 8,
        EGL_BLUE_SIZE, 8,
        EGL_NONE
    };

    EGLCheck(eglhandle = eglGetDisplay(GetDC(handle)));
    EGLCheck(eglInitialize(eglhandle, NULL, NULL));

    EGLConfig eglcfg;
    EGLint dummy;

    EGLCheck(eglChooseConfig(eglhandle, attr, &eglcfg, 1, &dummy));
    EGLCheck(surface = eglCreateWindowSurface(eglhandle, eglcfg, handle, NULL));

    attr[0] = EGL_CONTEXT_CLIENT_VERSION; attr[1] = 2;
    attr[2] = EGL_NONE;

    EGLCheck(ctx = eglCreateContext(eglhandle, eglcfg, EGL_NO_CONTEXT, attr));
    EGLCheck(eglMakeCurrent(eglhandle, surface, surface, ctx));