2 files changed, 4 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.c b/src/gallium/auxiliary/tgsi/tgsi_scan.c
index 9d155c908f5..649c327d9c9 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_scan.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_scan.c
@@ -245,6 +245,9 @@ tgsi_scan_shader(const struct tgsi_token *tokens,
                      else if (semName == TGSI_SEMANTIC_PSIZE) {
                         info->writes_psize = TRUE;
                      }
+                     else if (semName == TGSI_SEMANTIC_CLIPVERTEX) {
+                        info->writes_clipvertex = TRUE;
+                     }
                   }
 
                   if (procType == TGSI_PROCESSOR_FRAGMENT) {
diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.h b/src/gallium/auxiliary/tgsi/tgsi_scan.h
index 56079977bf1..61ce81342a4 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_scan.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_scan.h
@@ -77,6 +77,7 @@ struct tgsi_shader_info
    boolean uses_primid;
    boolean uses_frontface;
    boolean writes_psize;
+   boolean writes_clipvertex;
    boolean writes_viewport_index;
    boolean writes_layer;
    boolean is_msaa_sampler[PIPE_MAX_SAMPLERS];