mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-08-17 14:18:44 +02:00
* Move GPU LLE emulation from HLE to Graphics * Graphics: Move Gal/Texture to Texture * Remove Engines/ directory and namespace * Use tables for image formats * Abstract OpCode decoding * Simplify image table * Do not leak Read* symbols in TextureReader * Fixups * Rename IGalFrameBuffer -> IGalRenderTarget * Remove MaxBpp hardcoded value * Change yet again texture data and add G8R8 flipping * Rename GalFrameBufferFormat to GalSurfaceFormat * Unident EnsureSetup in ImageHandler * Add IsCompressed * Address some feedback
309 lines
7.8 KiB
C#
309 lines
7.8 KiB
C#
using ChocolArm64.Memory;
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using System;
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using System.Collections.Generic;
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namespace Ryujinx.Graphics.Memory
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{
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class NvGpuVmmCache
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{
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private const long RamSize = 4L * 1024 * 1024 * 1024;
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private const int MaxCpCount = 10000;
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private const int MaxCpTimeDelta = 60000;
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private class CachedPage
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{
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private struct Range
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{
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public long Start;
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public long End;
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public Range(long Start, long End)
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{
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this.Start = Start;
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this.End = End;
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}
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}
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private List<Range>[] Regions;
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private HashSet<long> ResidencyKeys;
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public LinkedListNode<long> Node { get; set; }
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public int Timestamp { get; private set; }
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public CachedPage()
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{
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Regions = new List<Range>[(int)NvGpuBufferType.Count];
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for (int Index = 0; Index < Regions.Length; Index++)
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{
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Regions[Index] = new List<Range>();
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}
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ResidencyKeys = new HashSet<long>();
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}
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public void AddResidency(long Key)
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{
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ResidencyKeys.Add(Key);
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}
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public void RemoveResidency(HashSet<long>[] Residency, long PageSize)
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{
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for (int i = 0; i < (int)NvGpuBufferType.Count; i++)
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{
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foreach (Range Region in Regions[i])
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{
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foreach (long Key in ResidencyKeys)
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{
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Residency[Region.Start / PageSize].Remove(Key);
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}
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}
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}
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}
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public bool AddRange(long Start, long End, NvGpuBufferType BufferType)
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{
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List<Range> BtRegions = Regions[(int)BufferType];
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for (int Index = 0; Index < BtRegions.Count; Index++)
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{
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Range Rg = BtRegions[Index];
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if (Start >= Rg.Start && End <= Rg.End)
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{
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return false;
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}
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if (Start <= Rg.End && Rg.Start <= End)
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{
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long MinStart = Math.Min(Rg.Start, Start);
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long MaxEnd = Math.Max(Rg.End, End);
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BtRegions[Index] = new Range(MinStart, MaxEnd);
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Timestamp = Environment.TickCount;
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return true;
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}
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}
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BtRegions.Add(new Range(Start, End));
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Timestamp = Environment.TickCount;
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return true;
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}
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public int GetTotalCount()
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{
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int Count = 0;
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for (int Index = 0; Index < Regions.Length; Index++)
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{
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Count += Regions[Index].Count;
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}
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return Count;
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}
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}
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private Dictionary<long, CachedPage> Cache;
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private LinkedList<long> SortedCache;
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private HashSet<long>[] Residency;
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private long ResidencyPageSize;
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private int CpCount;
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public NvGpuVmmCache()
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{
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Cache = new Dictionary<long, CachedPage>();
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SortedCache = new LinkedList<long>();
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}
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public bool IsRegionModified(AMemory Memory, NvGpuBufferType BufferType, long PA, long Size)
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{
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(bool[] Modified, long ModifiedCount) = Memory.IsRegionModified(PA, Size);
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PA = Memory.GetPhysicalAddress(PA);
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ClearCachedPagesIfNeeded();
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long PageSize = AMemory.PageSize;
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EnsureResidencyInitialized(PageSize);
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bool HasResidents = AddResidency(PA, Size);
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if (!HasResidents && ModifiedCount == 0)
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{
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return false;
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}
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long Mask = PageSize - 1;
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long ResidencyKey = PA;
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long PAEnd = PA + Size;
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bool RegMod = false;
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int Index = 0;
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while (PA < PAEnd)
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{
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long Key = PA & ~AMemory.PageMask;
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long PAPgEnd = Math.Min((PA + AMemory.PageSize) & ~AMemory.PageMask, PAEnd);
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bool IsCached = Cache.TryGetValue(Key, out CachedPage Cp);
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if (IsCached)
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{
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CpCount -= Cp.GetTotalCount();
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SortedCache.Remove(Cp.Node);
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}
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else
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{
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Cp = new CachedPage();
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Cache.Add(Key, Cp);
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}
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if (Modified[Index++] && IsCached)
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{
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Cp = new CachedPage();
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Cache[Key] = Cp;
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}
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Cp.AddResidency(ResidencyKey);
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Cp.Node = SortedCache.AddLast(Key);
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RegMod |= Cp.AddRange(PA, PAPgEnd, BufferType);
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CpCount += Cp.GetTotalCount();
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PA = PAPgEnd;
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}
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return RegMod;
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}
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private bool AddResidency(long PA, long Size)
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{
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long PageSize = ResidencyPageSize;
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long Mask = PageSize - 1;
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long Key = PA;
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bool ResidentFound = false;
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for (long Cursor = PA & ~Mask; Cursor < ((PA + Size + PageSize - 1) & ~Mask); Cursor += PageSize)
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{
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long PageIndex = Cursor / PageSize;
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Residency[PageIndex].Add(Key);
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if (Residency[PageIndex].Count > 1)
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{
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ResidentFound = true;
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}
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}
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return ResidentFound;
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}
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private void EnsureResidencyInitialized(long PageSize)
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{
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if (Residency == null)
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{
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Residency = new HashSet<long>[RamSize / PageSize];
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for (int i = 0; i < Residency.Length; i++)
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{
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Residency[i] = new HashSet<long>();
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}
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ResidencyPageSize = PageSize;
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}
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else
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{
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if (ResidencyPageSize != PageSize)
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{
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throw new InvalidOperationException("Tried to change residency page size");
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}
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}
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}
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private void ClearCachedPagesIfNeeded()
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{
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if (CpCount <= MaxCpCount)
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{
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return;
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}
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int Timestamp = Environment.TickCount;
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int TimeDelta;
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do
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{
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if (!TryPopOldestCachedPageKey(Timestamp, out long Key))
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{
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break;
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}
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CachedPage Cp = Cache[Key];
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Cp.RemoveResidency(Residency, ResidencyPageSize);
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Cache.Remove(Key);
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CpCount -= Cp.GetTotalCount();
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TimeDelta = RingDelta(Cp.Timestamp, Timestamp);
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}
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while (CpCount > (MaxCpCount >> 1) || (uint)TimeDelta > (uint)MaxCpTimeDelta);
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}
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private bool TryPopOldestCachedPageKey(int Timestamp, out long Key)
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{
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LinkedListNode<long> Node = SortedCache.First;
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if (Node == null)
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{
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Key = 0;
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return false;
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}
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SortedCache.Remove(Node);
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Key = Node.Value;
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return true;
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}
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private int RingDelta(int Old, int New)
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{
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if ((uint)New < (uint)Old)
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{
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return New + (~Old + 1);
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}
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else
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{
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return New - Old;
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}
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}
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}
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} |