From fdd6aca352ccf104a462b1a2d0c19f43006e5612 Mon Sep 17 00:00:00 2001
From: DiscoStarslayer <disco@disco.camp>
Date: Mon, 5 Oct 2026 15:45:01 -0400
Subject: [PATCH] GS: Off by one when reducing/extending texture coordinates

---
 pcsx2/GS/GSDrawingContext.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pcsx2/GS/GSDrawingContext.cpp b/pcsx2/GS/GSDrawingContext.cpp
index 1c0f7895a3..c276ceb366 100644
--- a/pcsx2/GS/GSDrawingContext.cpp
+++ b/pcsx2/GS/GSDrawingContext.cpp
@@ -49,7 +49,7 @@ static int findmax(int tl, int br, int limit, int wm, int minuv, int maxuv)
 
 static int reduce(int uv, int size)
 {
-	while (size > 3 && (1 << (size - 1)) >= uv)
+	while (size > 3 && (1 << (size - 1)) > uv)
 	{
 		size--;
 	}
@@ -59,7 +59,7 @@ static int reduce(int uv, int size)
 
 static int extend(int uv, int size)
 {
-	while (size < 10 && (1 << size) < uv)
+	while (size < 10 && (1 << size) <= uv)
 	{
 		size++;
 	}