[PATCH v3 18/20] ui/gtk-egl: Wait for the draw signal for dmabuf blobs

[Vivek Kasireddy <vivek.kasireddy@intel.com>]

Instead of immediately drawing and submitting, queue and wait
for the draw signal if the dmabuf submitted is a blob.

Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
---
 include/ui/gtk.h |  2 ++
 ui/gtk-egl.c     | 14 ++++++++++++++
 ui/gtk.c         |  2 +-
 3 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/include/ui/gtk.h b/include/ui/gtk.h
index 5ae0ad60a6..0929e658f2 100644
--- a/include/ui/gtk.h
+++ b/include/ui/gtk.h
@@ -116,6 +116,8 @@ void gd_egl_cursor_position(DisplayChangeListener *dcl,
                             uint32_t pos_x, uint32_t pos_y);
 void gd_egl_release_dmabuf(DisplayChangeListener *dcl,
                            QemuDmaBuf *dmabuf);
+void gd_egl_flush(DisplayChangeListener *dcl,
+                  uint32_t x, uint32_t y, uint32_t w, uint32_t h);
 void gd_egl_scanout_flush(DisplayChangeListener *dcl,
                           uint32_t x, uint32_t y, uint32_t w, uint32_t h);
 void gtk_egl_init(DisplayGLMode mode);
diff --git a/ui/gtk-egl.c b/ui/gtk-egl.c
index e7117695f0..799e3cbc78 100644
--- a/ui/gtk-egl.c
+++ b/ui/gtk-egl.c
@@ -302,6 +302,20 @@ void gd_egl_scanout_flush(DisplayChangeListener *dcl,
     eglSwapBuffers(qemu_egl_display, vc->gfx.esurface);
 }
 
+void gd_egl_flush(DisplayChangeListener *dcl,
+                  uint32_t x, uint32_t y, uint32_t w, uint32_t h)
+{
+    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
+    GtkWidget *area = vc->gfx.drawing_area;
+
+    if (vc->gfx.guest_fb.dmabuf) {
+        gtk_widget_queue_draw_area(area, x, y, w, h);
+        return;
+    }
+
+    gd_egl_scanout_flush(&vc->gfx.dcl, x, y, w, h);
+}
+
 void gtk_egl_init(DisplayGLMode mode)
 {
     GdkDisplay *gdk_display = gdk_display_get_default();
diff --git a/ui/gtk.c b/ui/gtk.c
index 7465aa7552..4c6066b015 100644
--- a/ui/gtk.c
+++ b/ui/gtk.c
@@ -685,7 +685,7 @@ static const DisplayChangeListenerOps dcl_egl_ops = {
     .dpy_gl_cursor_dmabuf    = gd_egl_cursor_dmabuf,
     .dpy_gl_cursor_position  = gd_egl_cursor_position,
     .dpy_gl_release_dmabuf   = gd_egl_release_dmabuf,
-    .dpy_gl_update           = gd_egl_scanout_flush,
+    .dpy_gl_update           = gd_egl_flush,
     .dpy_gl_wait_dmabuf      = gd_gl_wait_dmabuf,
     .dpy_has_dmabuf          = gd_has_dmabuf,
 };
-- 
2.30.2