From 701a9c269e43db0d5ea783ea48a1fe78bea8aba9 Mon Sep 17 00:00:00 2001
From: Faith Ekstrand <faith.ekstrand@collabora.com>
Date: Thu, 20 Nov 2025 16:31:48 -0500
Subject: [PATCH] nir: Add LAYER_ID and VIEW_INDEX to
 nir_lower_sysvals_to_varyings()

Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com>
Reviewed-by: Emma Anholt <emma@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38562>
---
 src/compiler/nir/nir.h                           | 2 ++
 src/compiler/nir/nir_lower_sysvals_to_varyings.c | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h
index aa877000fde..0bb53d2dac2 100644
--- a/src/compiler/nir/nir.h
+++ b/src/compiler/nir/nir.h
@@ -5702,6 +5702,8 @@ typedef struct nir_lower_sysvals_to_varyings_options {
    bool frag_coord : 1;
    bool front_face : 1;
    bool point_coord : 1;
+   bool layer_id : 1;
+   bool view_index : 1;
 } nir_lower_sysvals_to_varyings_options;
 
 bool
diff --git a/src/compiler/nir/nir_lower_sysvals_to_varyings.c b/src/compiler/nir/nir_lower_sysvals_to_varyings.c
index ccb0a453172..6cb8b83d7cf 100644
--- a/src/compiler/nir/nir_lower_sysvals_to_varyings.c
+++ b/src/compiler/nir/nir_lower_sysvals_to_varyings.c
@@ -51,6 +51,8 @@ nir_lower_sysvals_to_varyings(nir_shader *shader,
          SYSVAL_TO_VARYING(frag_coord, FRAG_COORD, POS);
          SYSVAL_TO_VARYING(point_coord, POINT_COORD, PNTC);
          SYSVAL_TO_VARYING(front_face, FRONT_FACE, FACE);
+         SYSVAL_TO_VARYING(layer_id, LAYER_ID, LAYER);
+         SYSVAL_TO_VARYING(view_index, VIEW_INDEX, VIEW_INDEX);
 
 #undef SYSVAL_TO_VARYING