From 554be014121697f764de3afd191f11c7a0630410 Mon Sep 17 00:00:00 2001
From: Hyper <34012267+hyperbx@users.noreply.github.com>
Date: Thu, 17 Oct 2024 19:36:10 +0100
Subject: [PATCH] Implemented CSD aspect ratio hooks

This only includes the centred mode, as the intention is to map out CSD classes in the API and handle the rest manually.

Co-Authored-By: Michael <15317421+ActualMandM@users.noreply.github.com>
---
 UnleashedRecomp/game.cpp           | 28 ++++++++++++++++++++++++++++
 UnleashedRecompLib/config/SWA.toml | 13 ++++++++++++-
 2 files changed, 40 insertions(+), 1 deletion(-)

diff --git a/UnleashedRecomp/game.cpp b/UnleashedRecomp/game.cpp
index 1ae3d0f..acdd2f0 100644
--- a/UnleashedRecomp/game.cpp
+++ b/UnleashedRecomp/game.cpp
@@ -43,3 +43,31 @@ void CameraBoostAspectRatioMidAsmHook(PPCRegister& r31, PPCRegister& f0)
         f0.f32 = pCamera->m_VertFieldOfView;
     }
 }
+
+void CSDAspectRatioMidAsmHook(PPCRegister& f1, PPCRegister& f2)
+{
+    auto newAspectRatio = (float)Window::s_width / (float)Window::s_height;
+
+    if (newAspectRatio > m_baseAspectRatio)
+    {
+        f1.f64 = 1280.0f / ((newAspectRatio * 720.0f) / 1280.0f);
+    }
+    else if (newAspectRatio < m_baseAspectRatio)
+    {
+        f2.f64 = 720.0f / ((1280.0f / newAspectRatio) / 720.0f);
+    }
+}
+
+void CSDOffsetMidAsmHook(PPCRegister& f1, PPCRegister& f2)
+{
+    auto newAspectRatio = (float)Window::s_width / (float)Window::s_height;
+
+    if (newAspectRatio > m_baseAspectRatio)
+    {
+        *(be<float>*)g_memory.Translate(0x8339C5D0) = ((newAspectRatio * 720.0f) - 1280.0f) / 2.0f / 1280.0f;
+    }
+    else
+    {
+        *(be<float>*)g_memory.Translate(0x8339C5D4) = ((1280.0f / newAspectRatio) - 720.0f) / 2.0f / 720.0f;
+    }
+}
diff --git a/UnleashedRecompLib/config/SWA.toml b/UnleashedRecompLib/config/SWA.toml
index 820dd50..8646af7 100644
--- a/UnleashedRecompLib/config/SWA.toml
+++ b/UnleashedRecompLib/config/SWA.toml
@@ -119,4 +119,15 @@ jump_address_on_false = 0x82468EE0
 [[midasm_hook]]
 name = "CameraBoostAspectRatioMidAsmHook"
 address = 0x8246BDA8
-registers = ["r31", "f0"]
\ No newline at end of file
+registers = ["r31", "f0"]
+
+[[midasm_hook]]
+name = "CSDAspectRatioMidAsmHook"
+address = 0x830C0A28
+registers = ["f1", "f2"]
+
+[[midasm_hook]]
+name = "CSDOffsetMidAsmHook"
+address = 0x830C0A78
+registers = ["f1", "f2"]
+return = true
\ No newline at end of file