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-rw-r--r--src/gallium/auxiliary/tgsi/tgsi_scan.c9
-rw-r--r--src/gallium/auxiliary/tgsi/tgsi_scan.h1
2 files changed, 8 insertions, 2 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.c b/src/gallium/auxiliary/tgsi/tgsi_scan.c
index 1fe1a07d7c3..e7bf6e660e0 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_scan.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_scan.c
@@ -166,9 +166,14 @@ tgsi_scan_shader(const struct tgsi_token *tokens,
info->input_cylindrical_wrap[reg] = (ubyte)fulldecl->Interp.CylindricalWrap;
info->num_inputs++;
- if (procType == TGSI_PROCESSOR_FRAGMENT &&
- fulldecl->Semantic.Name == TGSI_SEMANTIC_POSITION)
+ if (procType == TGSI_PROCESSOR_FRAGMENT) {
+ if (fulldecl->Semantic.Name == TGSI_SEMANTIC_POSITION)
info->reads_position = TRUE;
+ else if (fulldecl->Semantic.Name == TGSI_SEMANTIC_PRIMID)
+ info->uses_primid = TRUE;
+ else if (fulldecl->Semantic.Name == TGSI_SEMANTIC_FACE)
+ info->uses_frontface = TRUE;
+ }
}
else if (file == TGSI_FILE_SYSTEM_VALUE) {
unsigned index = fulldecl->Range.First;
diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.h b/src/gallium/auxiliary/tgsi/tgsi_scan.h
index cfa2b8e66c5..e2fa73a3fa7 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_scan.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_scan.h
@@ -74,6 +74,7 @@ struct tgsi_shader_info
boolean uses_instanceid;
boolean uses_vertexid;
boolean uses_primid;
+ boolean uses_frontface;
boolean origin_lower_left;
boolean pixel_center_integer;
boolean color0_writes_all_cbufs;