From c00e534283d26fd66e2f52962cf55435dc7a4597 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Marek=20Ol=C5=A1=C3=A1k?= <marek.olsak@amd.com>
Date: Fri, 8 Jan 2016 01:45:34 +0100
Subject: [PATCH] tgsi/scan: update for POSITION and FACE sytem values

Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com
Reviewed-by: Brian Paul <brianp@vmware.com>
---
 src/gallium/auxiliary/tgsi/tgsi_scan.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.c b/src/gallium/auxiliary/tgsi/tgsi_scan.c
index 6ea32ee..7a02e27 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_scan.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_scan.c
@@ -373,7 +373,10 @@ tgsi_scan_shader(const struct tgsi_token *tokens,
                      info->uses_primid = TRUE;
                   } else if (semName == TGSI_SEMANTIC_INVOCATIONID) {
                      info->uses_invocationid = TRUE;
-                  }
+                  } else if (semName == TGSI_SEMANTIC_POSITION)
+                     info->reads_position = TRUE;
+                  else if (semName == TGSI_SEMANTIC_FACE)
+                     info->uses_frontface = TRUE;
                }
                else if (file == TGSI_FILE_OUTPUT) {
                   info->output_semantic_name[reg] = (ubyte) semName;
-- 
2.7.4