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gallium: store edgflag info in tgsi_shader_info

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provides easier access for drivers which may base fallback decision on this
This commit is contained in:
Roland Scheidegger 2009-12-18 23:53:25 +01:00
parent 9d938e29f2
commit ff5b0c72db
2 changed files with 12 additions and 7 deletions
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18
src/gallium/auxiliary/tgsi/tgsi_scan.c
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@ -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++;
/* 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;
}
}
/* special case */
if (procType == TGSI_PROCESSOR_FRAGMENT &&
file == TGSI_FILE_OUTPUT &&
fulldecl->Semantic.Name == TGSI_SEMANTIC_POSITION) {
info->writes_z = TRUE;
}
}
}
}
break;

1
src/gallium/auxiliary/tgsi/tgsi_scan.h
View file

@ -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? */