From 0e327167a2ba00dcc973f7499add07cfdef6de93 Mon Sep 17 00:00:00 2001
From: Dave Airlie <airlied@redhat.com>
Date: Mon, 14 Aug 2023 13:16:59 +1000
Subject: [PATCH] nak: do perspective divide for interp none as well

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24998>
---
 src/nouveau/compiler/nak_nir.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/nouveau/compiler/nak_nir.c b/src/nouveau/compiler/nak_nir.c
index f82ff621e65..7ef32cb8d92 100644
--- a/src/nouveau/compiler/nak_nir.c
+++ b/src/nouveau/compiler/nak_nir.c
@@ -350,7 +350,8 @@ nak_nir_lower_fs_inputs(nir_shader *nir)
             continue;
 
          nir_intrinsic_instr *bary = nir_src_as_intrinsic(intrin->src[0]);
-         if (nir_intrinsic_interp_mode(bary) == INTERP_MODE_SMOOTH) {
+         if (nir_intrinsic_interp_mode(bary) == INTERP_MODE_SMOOTH ||
+             nir_intrinsic_interp_mode(bary) == INTERP_MODE_NONE) {
             /* Perspective-correct interpolation requires that we divide by
              * gl_FragCoord.w.
              */