[Mesa-dev] [PATCH] tgsi: store writes_primid when scanning tgsi

[Tim Rowley]

---
 src/gallium/auxiliary/tgsi/tgsi_scan.c | 3 +++
 src/gallium/auxiliary/tgsi/tgsi_scan.h | 1 +
 2 files changed, 4 insertions(+)

diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.c b/src/gallium/auxiliary/tgsi/tgsi_scan.c
index 84d6456..77fe6b3 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_scan.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_scan.c
@@ -548,6 +548,9 @@ scan_declaration(struct tgsi_shader_info *info,
          info->num_outputs = MAX2(info->num_outputs, reg + 1);
 
          switch (semName) {
+         case TGSI_SEMANTIC_PRIMID:
+            info->writes_primid = true;
+            break;
          case TGSI_SEMANTIC_VIEWPORT_INDEX:
             info->writes_viewport_index = true;
             break;
diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.h b/src/gallium/auxiliary/tgsi/tgsi_scan.h
index fe503e8..e4f4018 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_scan.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_scan.h
@@ -113,6 +113,7 @@ struct tgsi_shader_info
    boolean writes_position;
    boolean writes_psize;
    boolean writes_clipvertex;
+   boolean writes_primid;
    boolean writes_viewport_index;
    boolean writes_layer;
    boolean writes_memory; /**< contains stores or atomics to buffers or images */
-- 
2.7.4