From 4a4b11871e362016b41c56d4dd4654ade0b894e0 Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Mon, 5 Aug 2024 11:00:41 -0300
Subject: Fix same textures with unmapped start being considered different
 (#7141)

* Fix same textures with unmapped start being considered different

* Consolidate IsInvalid check

* InvalidAddress const

* Fix typo

Co-authored-by: riperiperi <rhy3756547@hotmail.com>

---------

Co-authored-by: riperiperi <rhy3756547@hotmail.com>
---
 src/Ryujinx.Memory/Range/MemoryRange.cs | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

(limited to 'src/Ryujinx.Memory/Range/MemoryRange.cs')

diff --git a/src/Ryujinx.Memory/Range/MemoryRange.cs b/src/Ryujinx.Memory/Range/MemoryRange.cs
index 46aca9ba..20e9d00b 100644
--- a/src/Ryujinx.Memory/Range/MemoryRange.cs
+++ b/src/Ryujinx.Memory/Range/MemoryRange.cs
@@ -5,6 +5,11 @@ namespace Ryujinx.Memory.Range
     /// </summary>
     public readonly record struct MemoryRange
     {
+        /// <summary>
+        /// Special address value used to indicate than an address is invalid.
+        /// </summary>
+        internal const ulong InvalidAddress = ulong.MaxValue;
+
         /// <summary>
         /// An empty memory range, with a null address and zero size.
         /// </summary>
@@ -58,13 +63,24 @@ namespace Ryujinx.Memory.Range
             return thisAddress < otherEndAddress && otherAddress < thisEndAddress;
         }
 
+        /// <summary>
+        /// Checks if a given sub-range of memory is invalid.
+        /// Those are used to represent unmapped memory regions (holes in the region mapping).
+        /// </summary>
+        /// <param name="subRange">Memory range to check</param>
+        /// <returns>True if the memory range is considered invalid, false otherwise</returns>
+        internal static bool IsInvalid(ref MemoryRange subRange)
+        {
+            return subRange.Address == InvalidAddress;
+        }
+
         /// <summary>
         /// Returns a string summary of the memory range.
         /// </summary>
         /// <returns>A string summary of the memory range</returns>
         public override string ToString()
         {
-            if (Address == ulong.MaxValue)
+            if (Address == InvalidAddress)
             {
                 return $"[Unmapped 0x{Size:X}]";
             }
-- 
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