From d6384a6886bfeaf837ff3f6fcef61325605e79b9 Mon Sep 17 00:00:00 2001
From: Gwilym Inzani <email@gwilym.dev>
Date: Sat, 22 Jul 2023 23:27:21 +0100
Subject: [PATCH] This improves mixing performance by about 20%

---
 agb/src/sound/mixer/sw_mixer.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/agb/src/sound/mixer/sw_mixer.rs b/agb/src/sound/mixer/sw_mixer.rs
index c5d50bce..13cd0376 100644
--- a/agb/src/sound/mixer/sw_mixer.rs
+++ b/agb/src/sound/mixer/sw_mixer.rs
@@ -433,6 +433,8 @@ impl MixerBuffer {
         channel.pos += 2 * self.frequency.buffer_size() as u32;
     }
 
+    #[link_section = ".iwram.write_mono"]
+    #[inline(never)]
     fn write_mono(&self, channel: &mut SoundChannel, working_buffer: &mut [Num<i16, 4>]) {
         let right_amount = ((channel.panning + 1) / 2) * channel.volume;
         let left_amount = ((-channel.panning + 1) / 2) * channel.volume;