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authorTSR Berry <20988865+TSRBerry@users.noreply.github.com>2023-04-08 01:22:00 +0200
committerMary <thog@protonmail.com>2023-04-27 23:51:14 +0200
commitcee712105850ac3385cd0091a923438167433f9f (patch)
tree4a5274b21d8b7f938c0d0ce18736d3f2993b11b1 /Ryujinx.Graphics.Gpu/Shader/HashTable/PartitionedHashTable.cs
parentcd124bda587ef09668a971fa1cac1c3f0cfc9f21 (diff)
Move solution and projects to src
Diffstat (limited to 'Ryujinx.Graphics.Gpu/Shader/HashTable/PartitionedHashTable.cs')
-rw-r--r--Ryujinx.Graphics.Gpu/Shader/HashTable/PartitionedHashTable.cs244
1 files changed, 0 insertions, 244 deletions
diff --git a/Ryujinx.Graphics.Gpu/Shader/HashTable/PartitionedHashTable.cs b/Ryujinx.Graphics.Gpu/Shader/HashTable/PartitionedHashTable.cs
deleted file mode 100644
index e9a4f654..00000000
--- a/Ryujinx.Graphics.Gpu/Shader/HashTable/PartitionedHashTable.cs
+++ /dev/null
@@ -1,244 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Diagnostics;
-
-namespace Ryujinx.Graphics.Gpu.Shader.HashTable
-{
- /// <summary>
- /// Partitioned hash table.
- /// </summary>
- /// <typeparam name="T"></typeparam>
- public class PartitionedHashTable<T>
- {
- /// <summary>
- /// Entry for a given data size.
- /// </summary>
- private readonly struct SizeEntry
- {
- /// <summary>
- /// Size for the data that will be stored on the hash table on this entry.
- /// </summary>
- public int Size { get; }
-
- /// <summary>
- /// Number of entries on the hash table.
- /// </summary>
- public int TableCount => _table.Count;
-
- private readonly PartitionHashTable<T> _table;
-
- /// <summary>
- /// Creates an entry for a given size.
- /// </summary>
- /// <param name="size">Size of the data to be stored on this entry</param>
- public SizeEntry(int size)
- {
- Size = size;
- _table = new PartitionHashTable<T>();
- }
-
- /// <summary>
- /// Gets an item for existing data, or adds a new one.
- /// </summary>
- /// <param name="data">Data associated with the item</param>
- /// <param name="dataHash">Hash of <paramref name="data"/></param>
- /// <param name="item">Item to be added</param>
- /// <returns>Existing item, or <paramref name="item"/> if not present</returns>
- public T GetOrAdd(byte[] data, uint dataHash, T item)
- {
- Debug.Assert(data.Length == Size);
- return _table.GetOrAdd(data, dataHash, item);
- }
-
- /// <summary>
- /// Adds a new item.
- /// </summary>
- /// <param name="data">Data associated with the item</param>
- /// <param name="dataHash">Hash of <paramref name="data"/></param>
- /// <param name="item">Item to be added</param>
- /// <returns>True if added, false otherwise</returns>
- public bool Add(byte[] data, uint dataHash, T item)
- {
- Debug.Assert(data.Length == Size);
- return _table.Add(data, dataHash, item);
- }
-
- /// <summary>
- /// Adds a partial entry.
- /// </summary>
- /// <param name="ownerData">Full entry data</param>
- /// <param name="dataHash">Hash of the sub-region of the data that belongs to this entry</param>
- /// <returns>True if added, false otherwise</returns>
- public bool AddPartial(byte[] ownerData, uint dataHash)
- {
- return _table.AddPartial(ownerData, dataHash, Size);
- }
-
- /// <summary>
- /// Fills a new hash table with "partials" of existing full entries of higher size.
- /// </summary>
- /// <param name="newEntry">Entry with the new hash table</param>
- public void FillPartials(SizeEntry newEntry)
- {
- Debug.Assert(newEntry.Size < Size);
- _table.FillPartials(newEntry._table, newEntry.Size);
- }
-
- /// <summary>
- /// Tries to find an item on the hash table.
- /// </summary>
- /// <param name="dataAccessor">Data accessor</param>
- /// <param name="item">The item on the table, if found, otherwise unmodified</param>
- /// <param name="data">The data on the table, if found, otherwise unmodified</param>
- /// <returns>Table lookup result</returns>
- public PartitionHashTable<T>.SearchResult TryFindItem(scoped ref SmartDataAccessor dataAccessor, scoped ref T item, scoped ref byte[] data)
- {
- return _table.TryFindItem(ref dataAccessor, Size, ref item, ref data);
- }
- }
-
- private readonly List<SizeEntry> _sizeTable;
-
- /// <summary>
- /// Creates a new partitioned hash table.
- /// </summary>
- public PartitionedHashTable()
- {
- _sizeTable = new List<SizeEntry>();
- }
-
- /// <summary>
- /// Adds a new item to the table.
- /// </summary>
- /// <param name="data">Data</param>
- /// <param name="item">Item associated with the data</param>
- public void Add(byte[] data, T item)
- {
- GetOrAdd(data, item);
- }
-
- /// <summary>
- /// Gets an existing item from the table, or adds a new one if not present.
- /// </summary>
- /// <param name="data">Data</param>
- /// <param name="item">Item associated with the data</param>
- /// <returns>Existing item, or <paramref name="item"/> if not present</returns>
- public T GetOrAdd(byte[] data, T item)
- {
- SizeEntry sizeEntry;
-
- int index = BinarySearch(_sizeTable, data.Length);
- if (index < _sizeTable.Count && _sizeTable[index].Size == data.Length)
- {
- sizeEntry = _sizeTable[index];
- }
- else
- {
- if (index < _sizeTable.Count && _sizeTable[index].Size < data.Length)
- {
- index++;
- }
-
- sizeEntry = new SizeEntry(data.Length);
-
- _sizeTable.Insert(index, sizeEntry);
-
- for (int i = index + 1; i < _sizeTable.Count; i++)
- {
- _sizeTable[i].FillPartials(sizeEntry);
- }
- }
-
- HashState hashState = new HashState();
- hashState.Initialize();
-
- for (int i = 0; i < index; i++)
- {
- ReadOnlySpan<byte> dataSlice = new ReadOnlySpan<byte>(data).Slice(0, _sizeTable[i].Size);
- hashState.Continue(dataSlice);
- _sizeTable[i].AddPartial(data, hashState.Finalize(dataSlice));
- }
-
- hashState.Continue(data);
- return sizeEntry.GetOrAdd(data, hashState.Finalize(data), item);
- }
-
- /// <summary>
- /// Performs binary search on a list of hash tables, each one with a fixed data size.
- /// </summary>
- /// <param name="entries">List of hash tables</param>
- /// <param name="size">Size to search for</param>
- /// <returns>Index of the hash table with the given size, or nearest one otherwise</returns>
- private static int BinarySearch(List<SizeEntry> entries, int size)
- {
- int left = 0;
- int middle = 0;
- int right = entries.Count - 1;
-
- while (left <= right)
- {
- middle = left + ((right - left) >> 1);
-
- SizeEntry entry = entries[middle];
-
- if (size == entry.Size)
- {
- break;
- }
-
- if (size < entry.Size)
- {
- right = middle - 1;
- }
- else
- {
- left = middle + 1;
- }
- }
-
- return middle;
- }
-
- /// <summary>
- /// Tries to find an item on the table.
- /// </summary>
- /// <param name="dataAccessor">Data accessor</param>
- /// <param name="item">Item, if found</param>
- /// <param name="data">Data, if found</param>
- /// <returns>True if the item was found on the table, false otherwise</returns>
- public bool TryFindItem(IDataAccessor dataAccessor, out T item, out byte[] data)
- {
- SmartDataAccessor sda = new SmartDataAccessor(dataAccessor);
-
- item = default;
- data = null;
-
- int left = 0;
- int right = _sizeTable.Count;
-
- while (left != right)
- {
- int index = left + ((right - left) >> 1);
-
- PartitionHashTable<T>.SearchResult result = _sizeTable[index].TryFindItem(ref sda, ref item, ref data);
-
- if (result == PartitionHashTable<T>.SearchResult.FoundFull)
- {
- return true;
- }
-
- if (result == PartitionHashTable<T>.SearchResult.NotFound)
- {
- right = index;
- }
- else /* if (result == PartitionHashTable<T>.SearchResult.FoundPartial) */
- {
- left = index + 1;
- }
- }
-
- data = null;
- return false;
- }
- }
-}