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-rw-r--r--src/gallium/auxiliary/tgsi/tgsi_scan.c4
-rw-r--r--src/gallium/auxiliary/tgsi/tgsi_scan.h1
2 files changed, 5 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.c b/src/gallium/auxiliary/tgsi/tgsi_scan.c
index 97d74e4a9f9..e4e9c032e02 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_scan.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_scan.c
@@ -191,6 +191,10 @@ tgsi_scan_shader(const struct tgsi_token *tokens,
info->output_semantic_index[reg] = (ubyte)fulldecl->Semantic.Index;
info->num_outputs++;
+ if (procType == TGSI_PROCESSOR_VERTEX &&
+ fulldecl->Semantic.Name == TGSI_SEMANTIC_CLIPDIST) {
+ info->num_written_clipdistance += 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 482c106ae79..235e6a3fae0 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_scan.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_scan.h
@@ -75,6 +75,7 @@ struct tgsi_shader_info
boolean pixel_center_integer;
boolean color0_writes_all_cbufs;
+ unsigned num_written_clipdistance;
/**
* Bitmask indicating which register files are accessed with
* indirect addressing. The bits are (1 << TGSI_FILE_x), etc.