virtio-gpu: block any rendering until client (ui) is done

Wire up gl_block callback, so ui code can request to stop
virtio-gpu rendering.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h
index f6cae0b0e0..13b0ab0848 100644
--- a/include/hw/virtio/virtio-gpu.h
+++ b/include/hw/virtio/virtio-gpu.h
@@ -107,6 +107,7 @@ typedef struct VirtIOGPU {
 
     bool use_virgl_renderer;
     bool renderer_inited;
+    bool renderer_blocked;
     QEMUTimer *fence_poll;
     QEMUTimer *print_stats;