From 0d92ec44e52cf29a4f5de44e4623eeff3036fcb9 Mon Sep 17 00:00:00 2001
From: Francisco Jerez <currojerez@riseup.net>
Date: Wed, 17 Aug 2022 18:14:31 -0700
Subject: [PATCH] intel/brw: Don't emit Z coordinate interpolation if CPS isn't
 in use.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28283>
---
 src/intel/compiler/brw_fs_visitor.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/intel/compiler/brw_fs_visitor.cpp b/src/intel/compiler/brw_fs_visitor.cpp
index d7735315870..1b5e7001029 100644
--- a/src/intel/compiler/brw_fs_visitor.cpp
+++ b/src/intel/compiler/brw_fs_visitor.cpp
@@ -352,7 +352,8 @@ fs_visitor::emit_interpolation_setup()
 
    abld = bld.annotate("compute pos.z");
    fs_reg coarse_z;
-   if (wm_prog_data->uses_depth_w_coefficients) {
+   if (wm_prog_data->coarse_pixel_dispatch != BRW_NEVER &&
+       wm_prog_data->uses_depth_w_coefficients) {
       /* In coarse pixel mode, the HW doesn't interpolate Z coordinate
        * properly. In the same way we have to add the coarse pixel size to
        * pixels locations, here we recompute the Z value with 2 coefficients