From 959ec01ac88a6e540def67efef75499ab11aef3d Mon Sep 17 00:00:00 2001
From: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com>
Date: Thu, 11 Dec 2025 12:39:28 -0500
Subject: [PATCH] brw/nir_lower_fs_load_output: optimize pixel coord

this saves a conversion or two.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40829>
---
 src/intel/compiler/brw/brw_nir_lower_fs_load_output.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/intel/compiler/brw/brw_nir_lower_fs_load_output.c b/src/intel/compiler/brw/brw_nir_lower_fs_load_output.c
index 6c70123863b..a56204e8e08 100644
--- a/src/intel/compiler/brw/brw_nir_lower_fs_load_output.c
+++ b/src/intel/compiler/brw/brw_nir_lower_fs_load_output.c
@@ -36,10 +36,11 @@ brw_nir_lower_fs_load_output_instr(nir_builder *b,
     * images.
     */
    nir_def *size = nir_txs(b, .dim = GLSL_SAMPLER_DIM_3D, .texture_index = target);
+   nir_def *pixel_coords = nir_load_pixel_coord(b);
 
    nir_def *coords[3] = {
-      nir_f2u32(b, nir_channel(b, nir_load_frag_coord(b), 0)),
-      nir_f2u32(b, nir_channel(b, nir_load_frag_coord(b), 1)),
+      nir_u2u32(b, nir_channel(b, pixel_coords, 0)),
+      nir_u2u32(b, nir_channel(b, pixel_coords, 1)),
       nir_load_layer_id(b),
    };