llvmipe: update comments

diff --git a/src/gallium/drivers/llvmpipe/lp_rast.c b/src/gallium/drivers/llvmpipe/lp_rast.c
index 400404fc5249ccb2dc16a885404eb2cac8d85ec6..e2c1b6d5cbaccd56d5bbdf36ecb04e246f34b247 100644 (file)
--- a/src/gallium/drivers/llvmpipe/lp_rast.c
+++ b/src/gallium/drivers/llvmpipe/lp_rast.c
@@ -882,9 +882,9 @@ create_rast_threads(struct lp_rasterizer *rast)
 
 
 /**
- * Create new lp_rasterizer.
- * \param empty  the queue to put empty scenes on after we've finished
- *               processing them.
+ * Create new lp_rasterizer.  If num_threads is zero, don't create any
+ * new threads, do rendering synchronously.
+ * \param num_threads  number of rasterizer threads to create
  */
 struct lp_rasterizer *
 lp_rast_create( unsigned num_threads )