virgl: clear vertex_array_dirty

Clear vertex_array_dirty after the state is emitted.

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>

src/gallium/drivers/virgl/virgl_context.c

@@ -466,6 +466,8 @@ static void virgl_hw_set_vertex_buffers(struct virgl_context *vctx)
          virgl_encoder_set_vertex_buffers(vctx, vctx->num_vertex_buffers, vctx->vertex_buffer);
 
       virgl_attach_res_vertex_buffers(vctx);
+
+      vctx->vertex_array_dirty = FALSE;
    }
 }