Merge branch 'fix/texture-cache' into 'master'

Increase texture cache @ 4 GiB DRAM for higher VRAM cards

See merge request [ryubing/ryujinx!241](https://git.ryujinx.app/ryubing/ryujinx/-/merge_requests/241)

src/Ryujinx.Graphics.Gpu/Image/AutoDeleteCache.cs

@@ -52,6 +52,7 @@ namespace Ryujinx.Graphics.Gpu.Image
         private ulong MaxTextureSizeCapacity = 4UL * 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 +74,24 @@ 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)
+            MaxTextureSizeCapacity = cpuMemorySizeGiB switch
             {
-                _maxCacheMemoryUsage = DefaultTextureSizeCapacity;
-                return;
-            }
-            else if (cpuMemorySizeGiB == 6)
-            {
-                MaxTextureSizeCapacity = TextureSizeCapacity6GiB;
-            }
-            else if (cpuMemorySizeGiB == 8)
-            {
-                MaxTextureSizeCapacity = TextureSizeCapacity8GiB;
-            }
-            else
-            {
-                MaxTextureSizeCapacity = TextureSizeCapacity12GiB;
-            }
+                < 6 when MaximumGpuMemoryGiB < 6 || context.Capabilities.MaximumGpuMemory == 0 =>
+                    DefaultTextureSizeCapacity,
+                < 6 => TextureSizeCapacity4GiB,
+                6 => TextureSizeCapacity6GiB,
+                8 => TextureSizeCapacity8GiB,
+                _ => TextureSizeCapacity12GiB
+            };
 
             ulong cacheMemory = (ulong)(context.Capabilities.MaximumGpuMemory * MemoryScaleFactor);