vtest: fence is not needed for resource creation

There is never a need to wait for the GPU works (if any) involved in
resource creation.  A client commonly does

  VCMD_SUBMIT_CMD
  VCMD_RESOURCE_CREATE2(dummy)
  ...
  VCMD_RESOURCE_BUSY_WAIT(dummy)

only because VCMD_RESOURCE_BUSY_WAIT needs a resource.  We don't need a
fence for resource creation.

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Ryan Neph <ryanneph@google.com>
Reviewed-by: Gert Wollny <gert.wollny@collabora.com>

vtest/vtest_renderer.c

@@ -94,13 +94,8 @@ struct vtest_renderer {
 };
 
 /*
- * A fence is created after
- *
- *  - VCMD_RESOURCE_CREATE
- *  - VCMD_RESOURCE_CREATE2
- *  - VCMD_SUBMIT_CMD
- *
- * for VCMD_RESOURCE_BUSY_WAIT to wait on.
+ * VCMD_RESOURCE_BUSY_WAIT is used to wait GPU works (VCMD_SUBMIT_CMD) or CPU
+ * works (VCMD_TRANSFER_GET2).  A fence is needed only for GPU works.
  */
 static void vtest_renderer_create_fence(struct vtest_renderer *renderer)
 {
@@ -900,9 +895,6 @@ static int vtest_create_resource_internal(struct vtest_context *ctx,
 
    util_hash_table_set(ctx->resource_table, intptr_to_pointer(res->res_id), res);
 
-   if (cmd_id == VCMD_RESOURCE_CREATE || cmd_id == VCMD_RESOURCE_CREATE2)
-      vtest_renderer_create_fence(&renderer);
-
    return 0;
 }