Add short duration texture cache (#3754)

* Add short duration texture cache

This texture cache takes textures that lose their last pool reference and keeps them alive until the next frame, or until an incompatible overlap removes it. This is done since under certain circumstances, a texture's reference can be wiped from a pool despite it still being in use - though typically the reference will return when rendering the next frame.

While this may slightly increase texture memory usage when quickly going through a bunch of temporary textures, it's still bounded due to the overlap removal rule.

This greatly increases performance in Hyrule Warriors: Age of Calamity. It may positively affect some UE4 games which dip framerate severely under certain circumstances.

* Small optimization

* Don't forget this.

* Add short cache dictionary

* Address feedback

* Address some feedback

Ryujinx.Graphics.Gpu/Image/TextureDescriptor.cs

@@ -1,3 +1,4 @@
+using System;
 using System.Runtime.CompilerServices;
 using System.Runtime.Intrinsics;
 
@@ -6,7 +7,7 @@ namespace Ryujinx.Graphics.Gpu.Image
     /// <summary>
     /// Maxwell texture descriptor, as stored on the GPU texture pool memory region.
     /// </summary>
-    struct TextureDescriptor : ITextureDescriptor
+    struct TextureDescriptor : ITextureDescriptor, IEquatable<TextureDescriptor>
     {
 #pragma warning disable CS0649
         public uint Word0;
@@ -249,5 +250,24 @@ namespace Ryujinx.Graphics.Gpu.Image
         {
             return Unsafe.As<TextureDescriptor, Vector256<byte>>(ref this).Equals(Unsafe.As<TextureDescriptor, Vector256<byte>>(ref other));
         }
+
+        /// <summary>
+        /// Check if two descriptors are equal.
+        /// </summary>
+        /// <param name="other">The descriptor to compare against</param>
+        /// <returns>True if they are equal, false otherwise</returns>
+        public bool Equals(TextureDescriptor other)
+        {
+            return Equals(ref other);
+        }
+
+        /// <summary>
+        /// Gets a hash code for this descriptor.
+        /// </summary>
+        /// <returns>The hash code for this descriptor.</returns>
+        public override int GetHashCode()
+        {
+            return Unsafe.As<TextureDescriptor, Vector256<byte>>(ref this).GetHashCode();
+        }
     }
 }