From 24ab54fe3fb4ef091bcdce3666a7e73f43971ae3 Mon Sep 17 00:00:00 2001
From: Rhys Perry <pendingchaos02@gmail.com>
Date: Wed, 29 Apr 2026 13:49:00 +0100
Subject: [PATCH] ac/llvm: fix isub image atomic

Fixes red_dead_redemption_2_VK/340c6c75f15678ff

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/41261>
---
 src/amd/llvm/ac_nir_to_llvm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/amd/llvm/ac_nir_to_llvm.c b/src/amd/llvm/ac_nir_to_llvm.c
index a10d898ea69..5492b7b1785 100644
--- a/src/amd/llvm/ac_nir_to_llvm.c
+++ b/src/amd/llvm/ac_nir_to_llvm.c
@@ -2348,6 +2348,9 @@ static LLVMValueRef visit_image_atomic(struct ac_nir_context *ctx, const nir_int
    case nir_atomic_op_iadd:
       atomic_subop = ac_atomic_add;
       break;
+   case nir_atomic_op_isub:
+      atomic_subop = ac_atomic_sub;
+      break;
    case nir_atomic_op_imin:
       atomic_subop = ac_atomic_smin;
       break;