From: Kenneth Graunke <kenneth@whitecape.org>
Date: Sat, 10 Nov 2018 01:35:29 +0000 (-0800)
Subject: iris: only clip lower if there's something to clip against
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=983e2ae7d297cb07c29c361efffea8b634783048;p=mesa.git

iris: only clip lower if there's something to clip against
---

diff --git a/src/gallium/drivers/iris/iris_state.c b/src/gallium/drivers/iris/iris_state.c
index b1ed0077893..d5e92a56523 100644
--- a/src/gallium/drivers/iris/iris_state.c
+++ b/src/gallium/drivers/iris/iris_state.c
@@ -2973,7 +2973,8 @@ iris_populate_vs_key(const struct iris_context *ice,
 
    iris_populate_sampler_key(ice, &key->tex);
 
-   if (info->clip_distance_array_size == 0)
+   if (info->clip_distance_array_size == 0 &&
+       (info->outputs_written & (VARYING_BIT_POS | VARYING_BIT_CLIP_VERTEX)))
       key->nr_userclip_plane_consts = cso_rast->num_clip_plane_consts;
 }