X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;ds=sidebyside;f=src%2Fgallium%2Fauxiliary%2Ftgsi%2Ftgsi_scan.c;h=7a02e27e01e866c0b1ded20af07cdf3a5a4bb39d;hb=f0993f81c7fab4ceb99b010d8ee2facbf4fdc737;hp=6ea32eedd7430786dd74a3967a0f5b58eb860f44;hpb=ff7e77724e0cf1409f84118d0d4ceee65535ccdb;p=mesa.git

diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.c b/src/gallium/auxiliary/tgsi/tgsi_scan.c
index 6ea32eedd74..7a02e27e01e 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;