intel/compiler: Add uses_is_indexed_draw flag

Reviewed-by: Jason Ekstrand <[email protected]>

2 files changed, 5 insertions, 0 deletions

diff --git a/src/intel/compiler/brw_compiler.h b/src/intel/compiler/brw_compiler.h
index 24196248b8e..e3bf535a519 100644
--- a/src/intel/compiler/brw_compiler.h
+++ b/src/intel/compiler/brw_compiler.h
@@ -978,6 +978,7 @@ struct brw_vs_prog_data {
    bool uses_vertexid;
    bool uses_instanceid;
    bool uses_basevertex;
+   bool uses_is_indexed_draw;
    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 1e384f5bf4d..e583c549204 100644
--- a/src/intel/compiler/brw_vec4.cpp
+++ b/src/intel/compiler/brw_vec4.cpp
@@ -2838,6 +2838,10 @@ brw_compile_vs(const struct brw_compiler *compiler, void *log_data,
       prog_data->uses_basevertex = true;
 
    if (shader->info.system_values_read &
+       BITFIELD64_BIT(SYSTEM_VALUE_IS_INDEXED_DRAW))
+      prog_data->uses_is_indexed_draw = true;
+
+   if (shader->info.system_values_read &
        BITFIELD64_BIT(SYSTEM_VALUE_FIRST_VERTEX))
       prog_data->uses_firstvertex = true;