anv: Submit a dummy batch when only semaphores are provided.

Vulkan allows you to do a submit whose only job is to wait on and
trigger semaphores.  The easiest way for us to support that right
now is to insert a dummy execbuf.

Reviewed-by: Lionel Landwerlin <[email protected]>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/intel/vulkan/anv_private.h b/src/intel/vulkan/anv_private.h
index b599db3b801..bc67bb6013a 100644
--- a/src/intel/vulkan/anv_private.h
+++ b/src/intel/vulkan/anv_private.h
@@ -745,6 +745,7 @@ struct anv_device {
     struct anv_state_pool                       surface_state_pool;
 
     struct anv_bo                               workaround_bo;
+    struct anv_bo                               trivial_batch_bo;
 
     struct anv_pipeline_cache                   blorp_shader_cache;
     struct blorp_context                        blorp;