[PATCH 3/3] virtio-gpu: first surface update with blob scanout after resumed

[Dongwon Kim]

The guest surface needs to be updated with a blob scanout after resumed
from saved vm state if blob is enabled.

Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Cc: Vivek Kasireddy <vivek.kasireddy@intel.com>
Signed-off-by: Dongwon Kim <dongwon.kim@intel.com>
---
 hw/display/virtio-gpu.c | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index b016d3bac8..34dc0ab9fc 100644
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -1417,19 +1417,27 @@ static int virtio_gpu_post_load(void *opaque, int 
version_id)
         if (!res) {
             return -EINVAL;
         }
-        scanout->ds = qemu_create_displaysurface_pixman(res->image);
-        if (!scanout->ds) {
-            return -EINVAL;
-        }
+
+        if (res->blob_size) {
+            assert(g->dmabuf.primary[i] != NULL);
+            g->dmabuf.primary[i]->buf.fd = res->dmabuf_fd;
+            dpy_gl_scanout_dmabuf(scanout->con, &g->dmabuf.primary[i]->buf);
+        } else {
+            scanout->ds = qemu_create_displaysurface_pixman(res->image);
+            if (!scanout->ds) {
+                return -EINVAL;
+            }
 #ifdef WIN32
-        qemu_displaysurface_win32_set_handle(scanout->ds, res->handle, 0);
+            qemu_displaysurface_win32_set_handle(scanout->ds, res->handle, 0);
 #endif
+            dpy_gfx_replace_surface(scanout->con, scanout->ds);
+            dpy_gfx_update_full(scanout->con);
+        }
 
-        dpy_gfx_replace_surface(scanout->con, scanout->ds);
-        dpy_gfx_update_full(scanout->con);
         if (scanout->cursor.resource_id) {
             update_cursor(g, &scanout->cursor);
         }
+
         res->scanout_bitmask |= (1 << i);
     }
 
-- 
2.34.1