From 6a15e7a3aa8ffefff1b2f6cfd6917b5ffa19eaa0 Mon Sep 17 00:00:00 2001
From: Flyinghead <raphael.jean@gmail.com>
Date: Sun, 2 Feb 2025 17:11:22 +0100
Subject: [PATCH] rend: LoD0 of VQ YUV textures is invalid. Use LoD1 instead.

Fixes background magenta textures in WSB2K2. Issue #1038
---
 core/rend/TexCache.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/core/rend/TexCache.cpp b/core/rend/TexCache.cpp
index 90cd47100..46743b57a 100644
--- a/core/rend/TexCache.cpp
+++ b/core/rend/TexCache.cpp
@@ -555,7 +555,10 @@ bool BaseTextureCacheData::Update()
 					{
 						PixelBuffer<u32> pb0;
 						pb0.init(2, 2 ,false);
-						texconv32(&pb0, (u8*)&vram[vram_addr], 2, 2);
+						if (tcw.PixelFmt == PixelYUV)
+							// Use higher LoD mipmap
+							vram_addr = startAddress + VQMipPoint[1];
+						texconv32(&pb0, &vram[vram_addr], 2, 2);
 						*pb32.data() = *pb0.data(1, 1);
 						continue;
 					}