llvmpipe: added assertions to verify that scene is empty
diff --git a/src/gallium/drivers/llvmpipe/lp_rast.c b/src/gallium/drivers/llvmpipe/lp_rast.c
index 6dbcb3c..bbd63ae 100644
--- a/src/gallium/drivers/llvmpipe/lp_rast.c
+++ b/src/gallium/drivers/llvmpipe/lp_rast.c
@@ -603,6 +603,9 @@
    util_unreference_framebuffer_state( &scene->fb );
 
    lp_scene_reset( scene );
+
+   assert(lp_scene_is_empty(scene));
+
    lp_scene_enqueue( rast->empty_scenes, scene );
    rast->curr_scene = NULL;
 }
diff --git a/src/gallium/drivers/llvmpipe/lp_setup.c b/src/gallium/drivers/llvmpipe/lp_setup.c
index cb87366..3aec9de 100644
--- a/src/gallium/drivers/llvmpipe/lp_setup.c
+++ b/src/gallium/drivers/llvmpipe/lp_setup.c
@@ -64,6 +64,8 @@
        */
       setup->scene = lp_scene_dequeue(setup->empty_scenes, TRUE);
 
+      assert(lp_scene_is_empty(setup->scene));
+
       if(0)lp_scene_reset( setup->scene ); /* XXX temporary? */
 
       lp_scene_set_framebuffer_size(setup->scene,