From: Marek Olšák <marek.olsak@amd.com>
Date: Fri, 8 Jan 2016 00:45:34 +0000 (+0100)
Subject: tgsi/scan: update for POSITION and FACE sytem values
X-Git-Tag: upstream/17.1.0~13312
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c00e534283d26fd66e2f52962cf55435dc7a4597;p=platform%2Fupstream%2Fmesa.git

tgsi/scan: update for POSITION and FACE sytem values

Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com
Reviewed-by: Brian Paul <brianp@vmware.com>
---

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;