3 files changed, 7 insertions, 1 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.c b/src/gallium/auxiliary/tgsi/tgsi_scan.c
index 872e4ff3a4b..2a37b38d3c7 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_scan.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_scan.c
@@ -200,6 +200,10 @@ tgsi_scan_shader(const struct tgsi_token *tokens,
                       fulldecl->Semantic.Name == TGSI_SEMANTIC_CLIPDIST) {
                      info->num_written_clipdistance += util_bitcount(fulldecl->Declaration.UsageMask);
                   }
+                  if ((procType == TGSI_PROCESSOR_VERTEX || procType == TGSI_PROCESSOR_GEOMETRY) &&
+                      fulldecl->Semantic.Name == TGSI_SEMANTIC_CULLDIST) {
+                     info->num_written_culldistance += util_bitcount(fulldecl->Declaration.UsageMask);
+                  }
                   /* extra info for special outputs */
                   if (procType == TGSI_PROCESSOR_FRAGMENT &&
                       fulldecl->Semantic.Name == TGSI_SEMANTIC_POSITION)
diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.h b/src/gallium/auxiliary/tgsi/tgsi_scan.h
index a5b70244bd7..91eef67ca0b 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_scan.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_scan.h
@@ -78,6 +78,7 @@ struct tgsi_shader_info
    boolean writes_viewport_index;
    boolean writes_layer;
 
+   unsigned num_written_culldistance;
    unsigned num_written_clipdistance;
    /**
     * Bitmask indicating which register files are accessed with
diff --git a/src/gallium/auxiliary/tgsi/tgsi_strings.c b/src/gallium/auxiliary/tgsi/tgsi_strings.c
index 27856767877..6f244e5142f 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_strings.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_strings.c
@@ -80,7 +80,8 @@ const char *tgsi_semantic_names[TGSI_SEMANTIC_COUNT] =
    "TEXCOORD",
    "PCOORD",
    "VIEWPORT_INDEX",
-   "LAYER"
+   "LAYER",
+   "CULLDIST"
 };
 
 const char *tgsi_texture_names[TGSI_TEXTURE_COUNT] =