[Mesa-dev] [PATCH 4/8] tgsi/scan: update for POSITION and FACE sytem values

[Marek Olšák]

From: Marek Olšák <marek.olsak at amd.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;
-- 
2.1.4