llvmpipe: move fences from per-bin to per-thread

Rather than inserting an lp_rast_fence command at the end of each
bin, have each rasterizer thread call this function directly once
it has run out of work to do on a particular scene.

This results in fewer calls to the mutex & related functions, but more
importantly makes it easier to recognize empty bins.

1 files changed, 4 insertions, 0 deletions

diff --git a/src/gallium/drivers/llvmpipe/lp_rast.c b/src/gallium/drivers/llvmpipe/lp_rast.c
index 1a82dd5694..1dde327836 100644
--- a/src/gallium/drivers/llvmpipe/lp_rast.c
+++ b/src/gallium/drivers/llvmpipe/lp_rast.c
@@ -815,6 +815,10 @@ rasterize_scene(struct lp_rasterizer_task *task,
       }
    }
 #endif
+
+   if (scene->fence) {
+      lp_rast_fence(task, lp_rast_arg_fence(scene->fence));
+   }
 }