2 files changed, 35 insertions, 3 deletions
diff --git a/src/Ryujinx.Graphics.Gpu/Image/AutoDeleteCache.cs b/src/Ryujinx.Graphics.Gpu/Image/AutoDeleteCache.cs
index 5e66a3b5..ad6c1fec 100644
--- a/src/Ryujinx.Graphics.Gpu/Image/AutoDeleteCache.cs
+++ b/src/Ryujinx.Graphics.Gpu/Image/AutoDeleteCache.cs
@@ -1,3 +1,4 @@
+using System;
 using System.Collections;
 using System.Collections.Generic;
 
@@ -46,7 +47,11 @@ namespace Ryujinx.Graphics.Gpu.Image
     {
         private const int MinCountForDeletion = 32;
         private const int MaxCapacity = 2048;
-        private const ulong MaxTextureSizeCapacity = 1024 * 1024 * 1024; // MB;
+        private const ulong MinTextureSizeCapacity = 512 * 1024 * 1024;
+        private const ulong MaxTextureSizeCapacity = 4UL * 1024 * 1024 * 1024;
+        private const ulong DefaultTextureSizeCapacity = 1UL * 1024 * 1024 * 1024;
+        private const float MemoryScaleFactor = 0.50f;
+        private ulong _maxCacheMemoryUsage = 0;
 
         private readonly LinkedList<Texture> _textures;
         private ulong _totalSize;
@@ -57,6 +62,25 @@ namespace Ryujinx.Graphics.Gpu.Image
         private readonly Dictionary<TextureDescriptor, ShortTextureCacheEntry> _shortCacheLookup;
 
         /// <summary>
+        /// Initializes the cache, setting the maximum texture capacity for the specified GPU context.
+        /// </summary>
+        /// <remarks>
+        /// If the backend GPU has 0 memory capacity, the cache size defaults to `DefaultTextureSizeCapacity`.
+        /// </remarks>
+        /// <param name="context">The GPU context that the cache belongs to</param>
+        public void Initialize(GpuContext context)
+        {
+            var cacheMemory = (ulong)(context.Capabilities.MaximumGpuMemory * MemoryScaleFactor);
+
+            _maxCacheMemoryUsage = Math.Clamp(cacheMemory, MinTextureSizeCapacity, MaxTextureSizeCapacity);
+
+            if (context.Capabilities.MaximumGpuMemory == 0)
+            {
+                _maxCacheMemoryUsage = DefaultTextureSizeCapacity;
+            }
+        }
+
+        /// <summary>
         /// Creates a new instance of the automatic deletion cache.
         /// </summary>
         public AutoDeleteCache()
@@ -85,7 +109,7 @@ namespace Ryujinx.Graphics.Gpu.Image
             texture.CacheNode = _textures.AddLast(texture);
 
             if (_textures.Count > MaxCapacity ||
-                (_totalSize > MaxTextureSizeCapacity && _textures.Count >= MinCountForDeletion))
+                (_totalSize > _maxCacheMemoryUsage && _textures.Count >= MinCountForDeletion))
             {
                 RemoveLeastUsedTexture();
             }
@@ -110,7 +134,7 @@ namespace Ryujinx.Graphics.Gpu.Image
                     _textures.AddLast(texture.CacheNode);
                 }
 
-                if (_totalSize > MaxTextureSizeCapacity && _textures.Count >= MinCountForDeletion)
+                if (_totalSize > _maxCacheMemoryUsage && _textures.Count >= MinCountForDeletion)
                 {
                     RemoveLeastUsedTexture();
                 }
diff --git a/src/Ryujinx.Graphics.Gpu/Image/TextureCache.cs b/src/Ryujinx.Graphics.Gpu/Image/TextureCache.cs
index 5a3319b0..1587e201 100644
--- a/src/Ryujinx.Graphics.Gpu/Image/TextureCache.cs
+++ b/src/Ryujinx.Graphics.Gpu/Image/TextureCache.cs
@@ -69,6 +69,14 @@ namespace Ryujinx.Graphics.Gpu.Image
         }
 
         /// <summary>
+        /// Initializes the cache, setting the maximum texture capacity for the specified GPU context.
+        /// </summary>
+        public void Initialize()
+        {
+            _cache.Initialize(_context);
+        }
+
+        /// <summary>
         /// Handles marking of textures written to a memory region being (partially) remapped.
         /// </summary>
         /// <param name="sender">Sender object</param>