[Mesa-dev] [PATCH 3/9] intel/compiler: Add a uses_basevertexid flag

[Antia Puentes]

From: Neil Roberts <nroberts at igalia.com>

---
 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 df6ee018546..6b5b73a54f0 100644
--- a/src/intel/compiler/brw_compiler.h
+++ b/src/intel/compiler/brw_compiler.h
@@ -969,6 +969,7 @@ struct brw_vs_prog_data {
    bool uses_vertexid;
    bool uses_instanceid;
    bool uses_basevertex;
+   bool uses_basevertexid;
    bool uses_baseinstance;
    bool uses_drawid;
 };
diff --git a/src/intel/compiler/brw_vec4.cpp b/src/intel/compiler/brw_vec4.cpp
index bbe4585e0c7..d996ab8c89f 100644
--- a/src/intel/compiler/brw_vec4.cpp
+++ b/src/intel/compiler/brw_vec4.cpp
@@ -2795,6 +2795,10 @@ 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_BASE_VERTEX_ID))
+      prog_data->uses_basevertexid = true;
+
    if (shader->info.system_values_read &
        BITFIELD64_BIT(SYSTEM_VALUE_BASE_INSTANCE))
       prog_data->uses_baseinstance = true;
-- 
2.14.1