Ryujinx-git/Ryujinx.Graphics.Gpu/Image/AutoDeleteCache.cs

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2019-10-13 06:02:07 +00:00
using System.Collections;
using System.Collections.Generic;
namespace Ryujinx.Graphics.Gpu.Image
{
class AutoDeleteCache : IEnumerable<Texture>
{
private const int MaxCapacity = 2048;
private LinkedList<Texture> _textures;
public AutoDeleteCache()
{
_textures = new LinkedList<Texture>();
}
public void Add(Texture texture)
{
texture.IncrementReferenceCount();
texture.CacheNode = _textures.AddLast(texture);
if (_textures.Count > MaxCapacity)
{
Texture oldestTexture = _textures.First.Value;
_textures.RemoveFirst();
oldestTexture.DecrementReferenceCount();
oldestTexture.CacheNode = null;
}
}
public void Lift(Texture texture)
{
if (texture.CacheNode != null)
{
if (texture.CacheNode != _textures.Last)
{
_textures.Remove(texture.CacheNode);
texture.CacheNode = _textures.AddLast(texture);
}
}
else
{
Add(texture);
}
}
public IEnumerator<Texture> GetEnumerator()
{
return _textures.GetEnumerator();
}
IEnumerator IEnumerable.GetEnumerator()
{
return _textures.GetEnumerator();
}
}
}