From: Neil Roberts <nrobe...@igalia.com>
Reviewed-by: Kenneth Graunke <kenn...@whitecape.org>
---
src/intel/compiler/brw_compiler.h | 1 +
src/intel/compiler/brw_vec4.cpp | 4 ++++
2 files changed, 5 insertions(+)
diff --git a/src/intel/compiler/brw_compiler.h
b/src/intel/compiler/brw_compiler.h
index d3ae6499b91..ffcf577d3d1 100644
--- a/src/intel/compiler/brw_compiler.h
+++ b/src/intel/compiler/brw_compiler.h
@@ -977,6 +977,7 @@ struct brw_vs_prog_data {
bool uses_vertexid;
bool uses_instanceid;
bool uses_basevertex;
+ bool uses_firstvertex;
bool uses_baseinstance;
bool uses_drawid;
};
diff --git a/src/intel/compiler/brw_vec4.cpp b/src/intel/compiler/brw_vec4.cpp
index 218925ccb12..9459d61af6c 100644
--- a/src/intel/compiler/brw_vec4.cpp
+++ b/src/intel/compiler/brw_vec4.cpp
@@ -2836,6 +2836,10 @@ brw_compile_vs(const struct brw_compiler *compiler, void
*log_data,
BITFIELD64_BIT(SYSTEM_VALUE_BASE_VERTEX))
prog_data->uses_basevertex = true;
+ if (shader->info.system_values_read &
+ BITFIELD64_BIT(SYSTEM_VALUE_FIRST_VERTEX))
+ prog_data->uses_firstvertex = true;
+
if (shader->info.system_values_read &
BITFIELD64_BIT(SYSTEM_VALUE_BASE_INSTANCE))
prog_data->uses_baseinstance = true;
--
2.14.3
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