From e7b65b1fc8cc2c6a1eb3284c4c468db3a6cd3216 Mon Sep 17 00:00:00 2001
From: Netflate <netflate@gmail.com>
Date: Sat, 26 Sep 2026 17:07:29 +0100
Subject: [PATCH] image-copy: Fix non-deterministic dmabuf format order

---
 src/wayland/handlers/image_copy_capture/mod.rs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/wayland/handlers/image_copy_capture/mod.rs b/src/wayland/handlers/image_copy_capture/mod.rs
index 85a01c9a..81f3a671 100644
--- a/src/wayland/handlers/image_copy_capture/mod.rs
+++ b/src/wayland/handlers/image_copy_capture/mod.rs
@@ -1,6 +1,8 @@
 // SPDX-License-Identifier: GPL-3.0-only
 
-use std::{borrow::Borrow, collections::HashMap, sync::Mutex};
+use std::{borrow::Borrow, sync::Mutex};
+
+use indexmap::IndexMap;
 
 use smithay::{
     backend::{
@@ -459,7 +461,7 @@ fn constraints_for_renderer(
                 .dmabuf_render_formats()
                 .iter()
                 .fold(
-                    HashMap::<Fourcc, Vec<Modifier>>::new(),
+                    IndexMap::<Fourcc, Vec<Modifier>>::new(),
                     |mut map, format| {
                         map.entry(format.code).or_default().push(format.modifier);
                         map