From 73d617fb7210acfc36f3cd4b8530cc9fc7656fd4 Mon Sep 17 00:00:00 2001
From: lightningterror <18107717+lightningterror@users.noreply.github.com>
Date: Sat, 2 Mar 2024 23:27:41 +0100
Subject: [PATCH] GS/HW: RTA Decorrect on Target Update.

---
 pcsx2/GS/Renderers/HW/GSTextureCache.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pcsx2/GS/Renderers/HW/GSTextureCache.cpp b/pcsx2/GS/Renderers/HW/GSTextureCache.cpp
index a8b64053f0..83dd67fa17 100644
--- a/pcsx2/GS/Renderers/HW/GSTextureCache.cpp
+++ b/pcsx2/GS/Renderers/HW/GSTextureCache.cpp
@@ -5963,6 +5963,15 @@ void GSTextureCache::Target::Update()
 		return;
 	}
 
+	if (m_dirty.size() != 1 || !total_rect.eq(m_valid) && (m_dirty.GetDirtyChannels() & 0x8))
+	{
+		this->RTADecorrect(this);
+	}
+	else
+	{
+		m_rt_alpha_scale = false;
+	}
+
 	const GSVector4i t_offset(total_rect.xyxy());
 	const GSVector4i t_size(total_rect - t_offset);
 	const GSVector4 t_sizef(t_size.zwzw());