[Mesa-dev] [PATCH 4/5] tgsi: add clip and cull distance writemasks into tgsi_shader_info

[Marek Olšák]

From: Marek Olšák <marek.olsak at amd.com>

---
 src/gallium/auxiliary/tgsi/tgsi_scan.c | 4 ++++
 src/gallium/auxiliary/tgsi/tgsi_scan.h | 2 ++
 2 files changed, 6 insertions(+)

diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.c b/src/gallium/auxiliary/tgsi/tgsi_scan.c
index b6c88af..9d155c9 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_scan.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_scan.c
@@ -227,10 +227,14 @@ tgsi_scan_shader(const struct tgsi_token *tokens,
                      if (semName == TGSI_SEMANTIC_CLIPDIST) {
                         info->num_written_clipdistance +=
                            util_bitcount(fulldecl->Declaration.UsageMask);
+                        info->clipdist_writemask |=
+                           fulldecl->Declaration.UsageMask << (semIndex*4);
                      }
                      else if (semName == TGSI_SEMANTIC_CULLDIST) {
                         info->num_written_culldistance +=
                            util_bitcount(fulldecl->Declaration.UsageMask);
+                        info->culldist_writemask |=
+                           fulldecl->Declaration.UsageMask << (semIndex*4);
                      }
                      else if (semName == TGSI_SEMANTIC_VIEWPORT_INDEX) {
                         info->writes_viewport_index = TRUE;
diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.h b/src/gallium/auxiliary/tgsi/tgsi_scan.h
index b50b650..5607997 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_scan.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_scan.h
@@ -81,6 +81,8 @@ struct tgsi_shader_info
    boolean writes_layer;
    boolean is_msaa_sampler[PIPE_MAX_SAMPLERS];
 
+   unsigned clipdist_writemask;
+   unsigned culldist_writemask;
    unsigned num_written_culldistance;
    unsigned num_written_clipdistance;
    /**
-- 
2.1.0