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[PULL 1/8] spice: flush on GL update before notifying client

From: Gerd Hoffmann
Subject: [PULL 1/8] spice: flush on GL update before notifying client
Date: Fri, 19 Feb 2021 23:00:29 +0100

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Since the introduction of spice/virgl support in commit
474114b7 ("spice: add opengl/virgl/dmabuf support"), the drawing isn't
being flushed before notifying the client. This results in
outdated/sluggish drawing on client side, in particular when using the
Linux console.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210216092056.2301293-1-marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
 ui/spice-display.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ui/spice-display.c b/ui/spice-display.c
index 6f32b66a6e75..d562c6408405 100644
--- a/ui/spice-display.c
+++ b/ui/spice-display.c
@@ -1087,6 +1087,7 @@ static void qemu_spice_gl_update(DisplayChangeListener 
     trace_qemu_spice_gl_update(ssd->qxl.id, w, h, x, y);
     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, x, y, w, h, cookie);

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