From dcc674febd2cafb29cef14c4937dbb077c72734a Mon Sep 17 00:00:00 2001
From: Tillmann Karras <tilkax@gmail.com>
Date: Sun, 17 Dec 2023 14:44:31 +0000
Subject: [PATCH] GameSettings: fix C4 texture tiling in Crash Nitro Kart

For buttons and some character icons the game loads palleted PNGs and
tiles the pallet indices directly into C4 textures but fails to take
into account that PNG and C4 use opposite nibble orders. This causes
adjacent pixel columns to be swapped, see issue 13370.

Also disable Immediate XFB for the Japanese release. It has the same
black screen and flickering issues as the other regions.
---
 Data/Sys/GameSettings/GC8JA4.ini | 24 ++++++++++++++++++++++++
 Data/Sys/GameSettings/GCN.ini    |  6 ++++++
 2 files changed, 30 insertions(+)
 create mode 100644 Data/Sys/GameSettings/GC8JA4.ini

diff --git a/Data/Sys/GameSettings/GC8JA4.ini b/Data/Sys/GameSettings/GC8JA4.ini
new file mode 100644
index 0000000000..1fb765408f
--- /dev/null
+++ b/Data/Sys/GameSettings/GC8JA4.ini
@@ -0,0 +1,24 @@
+# GC8JA4 - ｸﾗｯｼｭ･ﾊﾞﾝﾃﾞｨｸｰ 爆走！ニトロカート
+
+[Core]
+# Values set here will override the main Dolphin settings.
+
+[OnLoad]
+# Add memory patches to be loaded once on boot here.
+
+[OnFrame]
+# Add memory patches to be applied every frame here.
+
+[ActionReplay]
+# Add action replay cheats here.
+$Fix C4 texture tiling (used for buttons and some character icons)
+0400328C 7D0340AE
+04003290 5108452E
+04003294 5508E13E
+04003298 4E800020
+040CA1B4 4BF390D9
+
+[Video_Settings]
+
+[Video_Hacks]
+ImmediateXFBEnable = False
diff --git a/Data/Sys/GameSettings/GCN.ini b/Data/Sys/GameSettings/GCN.ini
index dd91e91734..1db5e2472c 100644
--- a/Data/Sys/GameSettings/GCN.ini
+++ b/Data/Sys/GameSettings/GCN.ini
@@ -11,6 +11,12 @@
 
 [ActionReplay]
 # Add action replay cheats here.
+$Fix C4 texture tiling (used for buttons and some character icons)
+0400328C 7D0340AE
+04003290 5108452E
+04003294 5508E13E
+04003298 4E800020
+040CC574 4BF36D19
 
 [Video_Settings]