From 6cdbdd87637f178738d130c4ac1760e1f0a7a2e5 Mon Sep 17 00:00:00 2001
From: KeatonTheBot <keaton@ryujinx.app>
Date: Sat, 27 Dec 2025 22:05:51 -0600
Subject: [PATCH] Increase texture cache @ 4 GiB DRAM for higher VRAM cards

* Clean up texture cache code for low-VRAM GPUs
---
 .../Image/AutoDeleteCache.cs                  | 31 +++++++++----------
 1 file changed, 14 insertions(+), 17 deletions(-)

diff --git a/src/Ryujinx.Graphics.Gpu/Image/AutoDeleteCache.cs b/src/Ryujinx.Graphics.Gpu/Image/AutoDeleteCache.cs
index 99b34112f..dfccc0aa6 100644
--- a/src/Ryujinx.Graphics.Gpu/Image/AutoDeleteCache.cs
+++ b/src/Ryujinx.Graphics.Gpu/Image/AutoDeleteCache.cs
@@ -49,9 +49,10 @@ namespace Ryujinx.Graphics.Gpu.Image
         private const int MinCountForDeletion = 32;
         private const int MaxCapacity = 2048;
         private const ulong GiB = 1024 * 1024 * 1024;
-        private ulong MaxTextureSizeCapacity = 4UL * GiB;
+        private ulong MaxTextureSizeCapacity = 2UL * GiB;
         private const ulong MinTextureSizeCapacity = 512 * 1024 * 1024;
         private const ulong DefaultTextureSizeCapacity = 1 * GiB;
+        private const ulong TextureSizeCapacity4GiB = 2 * GiB;
         private const ulong TextureSizeCapacity6GiB = 4 * GiB;
         private const ulong TextureSizeCapacity8GiB = 6 * GiB;
         private const ulong TextureSizeCapacity12GiB = 12 * GiB;
@@ -73,31 +74,27 @@ namespace Ryujinx.Graphics.Gpu.Image
         /// <remarks>
         /// If the backend GPU has 0 memory capacity, the cache size defaults to `DefaultTextureSizeCapacity`.
         /// 
-        /// Reads the current Device total CPU Memory, to determine the maximum amount of Vram available. Capped to 50% of Current GPU Memory.
+        /// Reads the current Device total CPU Memory, to determine the maximum amount of VRAM available. Capped to 50% of Current GPU Memory.
         /// </remarks>
         /// <param name="context">The GPU context that the cache belongs to</param>
-        /// <param name="cpuMemorySize">The amount of physical CPU Memory Avaiable on the device.</param>
+        /// <param name="cpuMemorySize">The amount of physical CPU Memory available on the device.</param>
         public void Initialize(GpuContext context, ulong cpuMemorySize)
         {
             ulong cpuMemorySizeGiB = cpuMemorySize / GiB;
+            ulong MaximumGpuMemoryGiB = context.Capabilities.MaximumGpuMemory / GiB;
 
-            if (cpuMemorySizeGiB < 6 || context.Capabilities.MaximumGpuMemory == 0)
+            if (context.Capabilities.MaximumGpuMemory == 0 || cpuMemorySizeGiB < 6 && MaximumGpuMemoryGiB < 6)
             {
-                _maxCacheMemoryUsage = DefaultTextureSizeCapacity;
-                return;
-            }
-            else if (cpuMemorySizeGiB == 6)
-            {
-                MaxTextureSizeCapacity = TextureSizeCapacity6GiB;
-            }
-            else if (cpuMemorySizeGiB == 8)
-            {
-                MaxTextureSizeCapacity = TextureSizeCapacity8GiB;
+                MaxTextureSizeCapacity = DefaultTextureSizeCapacity;
             }
             else
-            {
-                MaxTextureSizeCapacity = TextureSizeCapacity12GiB;
-            }
+                MaxTextureSizeCapacity = cpuMemorySizeGiB switch
+                {
+                    < 6 => TextureSizeCapacity4GiB,
+                    6 => TextureSizeCapacity6GiB,
+                    8 => TextureSizeCapacity8GiB,
+                    _ => TextureSizeCapacity12GiB
+                };
 
             ulong cacheMemory = (ulong)(context.Capabilities.MaximumGpuMemory * MemoryScaleFactor);