spice: flush drawing before notifying client

This solves the client having slow/outdated VGA/2D console. It's a
regression introduced when the code was switched to render it via opengl
in commit 4423184376 ("spice/gl: render DisplaySurface via opengl")

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210216092056.2301293-2-marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Marc-André Lureau 2021-02-16 13:20:56 +04:00 committed by Gerd Hoffmann
parent 3af1671852
commit f4f2805ef8

View file

@ -846,6 +846,7 @@ static void spice_gl_refresh(DisplayChangeListener *dcl)
graphic_hw_update(dcl->con);
if (ssd->gl_updates && ssd->have_surface) {
qemu_spice_gl_block(ssd, true);
glFlush();
cookie = (uintptr_t)qxl_cookie_new(QXL_COOKIE_TYPE_GL_DRAW_DONE, 0);
spice_qxl_gl_draw_async(&ssd->qxl, 0, 0,
surface_width(ssd->ds),