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-rw-r--r--src/gallium/auxiliary/tgsi/tgsi_scan.c18
-rw-r--r--src/gallium/auxiliary/tgsi/tgsi_scan.h1
2 files changed, 12 insertions, 7 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.c b/src/gallium/auxiliary/tgsi/tgsi_scan.c
index a5d2db04ec..ebee000c06 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_scan.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_scan.c
@@ -138,15 +138,19 @@ tgsi_scan_shader(const struct tgsi_token *tokens,
info->output_semantic_name[reg] = (ubyte)fulldecl->Semantic.Name;
info->output_semantic_index[reg] = (ubyte)fulldecl->Semantic.Index;
info->num_outputs++;
- }
- /* special case */
- if (procType == TGSI_PROCESSOR_FRAGMENT &&
- file == TGSI_FILE_OUTPUT &&
- fulldecl->Semantic.Name == TGSI_SEMANTIC_POSITION) {
- info->writes_z = TRUE;
+ /* extra info for special outputs */
+ if (procType == TGSI_PROCESSOR_FRAGMENT &&
+ fulldecl->Semantic.Name == TGSI_SEMANTIC_POSITION) {
+ info->writes_z = TRUE;
+ }
+ if (procType == TGSI_PROCESSOR_VERTEX &&
+ fulldecl->Semantic.Name == TGSI_SEMANTIC_EDGEFLAG) {
+ info->writes_edgeflag = TRUE;
+ }
}
- }
+
+ }
}
break;
diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.h b/src/gallium/auxiliary/tgsi/tgsi_scan.h
index 8a7ee0c7e4..3ce0e88e4c 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_scan.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_scan.h
@@ -58,6 +58,7 @@ struct tgsi_shader_info
uint opcode_count[TGSI_OPCODE_LAST]; /**< opcode histogram */
boolean writes_z; /**< does fragment shader write Z value? */
+ boolean writes_edgeflag; /**< vertex shader outputs edgeflag */
boolean uses_kill; /**< KIL or KILP instruction used? */
boolean uses_fogcoord; /**< fragment shader uses fog coord? */
boolean uses_frontfacing; /**< fragment shader uses front/back-face flag? */