Mesa (master): tgsi/scan: record if a shader writes the position output
Marek Olšák
mareko at kemper.freedesktop.org
Mon Nov 21 21:41:10 UTC 2016
Module: Mesa
Branch: master
Commit: 7dbf83af54067efcbd8fb872bbd1115fcecfab47
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=7dbf83af54067efcbd8fb872bbd1115fcecfab47
Author: Marek Olšák <marek.olsak at amd.com>
Date: Mon Nov 14 02:01:34 2016 +0100
tgsi/scan: record if a shader writes the position output
Tested-by: Edmondo Tommasina <edmondo.tommasina at gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle at amd.com>
---
src/gallium/auxiliary/tgsi/tgsi_scan.c | 2 ++
src/gallium/auxiliary/tgsi/tgsi_scan.h | 1 +
2 files changed, 3 insertions(+)
diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.c b/src/gallium/auxiliary/tgsi/tgsi_scan.c
index f0dba0b..84d6456 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_scan.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_scan.c
@@ -575,6 +575,8 @@ scan_declaration(struct tgsi_shader_info *info,
case TGSI_SEMANTIC_POSITION:
if (procType == PIPE_SHADER_FRAGMENT)
info->writes_z = true;
+ else
+ info->writes_position = true;
break;
}
break;
diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.h b/src/gallium/auxiliary/tgsi/tgsi_scan.h
index 602a870..fe503e8 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_scan.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_scan.h
@@ -110,6 +110,7 @@ struct tgsi_shader_info
boolean uses_primid;
boolean uses_frontface;
boolean uses_invocationid;
+ boolean writes_position;
boolean writes_psize;
boolean writes_clipvertex;
boolean writes_viewport_index;
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