Texture Cache: "Texture Groups" and "Texture Dependencies" (#2001)

* Initial implementation (3d tex mips broken)

This works rather well for most games, just need to fix 3d texture mips.

* Cleanup

* Address feedback

* Copy Dependencies and various other fixes

* Fix layer/level offset for copy from view<->view.

* Remove dirty flag from dependency

The dirty flag behaviour is not needed - DeferredCopy is all we need.

* Fix tracking mip slices.

* Propagate granularity (fix astral chain)

* Address Feedback pt 1

* Save slice sizes as part of SizeInfo

* Fix nits

* Fix disposing multiple dependencies causing a crash

This list is obviously modified when removing dependencies, so create a copy of it.

Ryujinx.Graphics.Gpu/Image/TextureDependency.cs

@@ -0,0 +1,37 @@
+namespace Ryujinx.Graphics.Gpu.Image
+{
+    /// <summary>
+    /// One side of a two-way dependency between one texture view and another.
+    /// Contains a reference to the handle owning the dependency, and the other dependency.
+    /// </summary>
+    class TextureDependency
+    {
+        /// <summary>
+        /// The handle that owns this dependency.
+        /// </summary>
+        public TextureGroupHandle Handle;
+
+        /// <summary>
+        /// The other dependency linked to this one, which belongs to another handle.
+        /// </summary>
+        public TextureDependency Other;
+
+        /// <summary>
+        /// Create a new texture dependency.
+        /// </summary>
+        /// <param name="handle">The handle that owns the dependency</param>
+        public TextureDependency(TextureGroupHandle handle)
+        {
+            Handle = handle;
+        }
+
+        /// <summary>
+        /// Signal that the owner of this dependency has been modified,
+        /// meaning that the other dependency's handle must defer a copy from it.
+        /// </summary>
+        public void SignalModified()
+        {
+            Other.Handle.DeferCopy(Handle);
+        }
+    }
+}