mirror of
https://github.com/Ryujinx/Ryujinx.git
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103 lines
2.9 KiB
C#
103 lines
2.9 KiB
C#
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using Silk.NET.Vulkan;
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using System;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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namespace Ryujinx.Graphics.Vulkan
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{
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public enum SpecConstType
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{
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Bool32,
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Int16,
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Int32,
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Int64,
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Float16,
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Float32,
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Float64
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}
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sealed class SpecDescription
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{
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public readonly SpecializationInfo Info;
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public readonly SpecializationMapEntry[] Map;
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// For mapping a simple packed struct or single entry
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public SpecDescription(params (uint Id, SpecConstType Type)[] description)
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{
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int count = description.Length;
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Map = new SpecializationMapEntry[count];
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uint structSize = 0;
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for (int i = 0; i < count; ++i)
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{
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var typeSize = SizeOf(description[i].Type);
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Map[i] = new SpecializationMapEntry(description[i].Id, structSize, typeSize);
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structSize += typeSize;
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}
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Info = new SpecializationInfo()
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{
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DataSize = structSize,
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MapEntryCount = (uint)count
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};
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}
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// For advanced mapping with overlapping or staggered fields
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public SpecDescription(SpecializationMapEntry[] map)
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{
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int count = map.Length;
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Map = map;
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uint structSize = 0;
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for (int i = 0; i < count; ++i)
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{
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structSize = Math.Max(structSize, map[i].Offset + (uint)map[i].Size);
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}
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Info = new SpecializationInfo()
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{
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DataSize = structSize,
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MapEntryCount = (uint)map.Length
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};
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}
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private static uint SizeOf(SpecConstType type) => type switch
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{
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SpecConstType.Int16 or SpecConstType.Float16 => 2,
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SpecConstType.Bool32 or SpecConstType.Int32 or SpecConstType.Float32 => 4,
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SpecConstType.Int64 or SpecConstType.Float64 => 8,
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_ => throw new ArgumentOutOfRangeException(nameof(type))
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};
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private SpecDescription()
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{
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Info = new();
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}
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public static readonly SpecDescription Empty = new();
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}
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readonly struct SpecData : IRefEquatable<SpecData>
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{
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private readonly byte[] _data;
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private readonly int _hash;
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public int Length => _data.Length;
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public ReadOnlySpan<byte> Span => _data.AsSpan();
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public override int GetHashCode() => _hash;
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public SpecData(ReadOnlySpan<byte> data)
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{
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_data = new byte[data.Length];
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data.CopyTo(_data);
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var hc = new HashCode();
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hc.AddBytes(data);
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_hash = hc.ToHashCode();
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}
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public override bool Equals(object obj) => obj is SpecData other && Equals(other);
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public bool Equals(ref SpecData other) => _data.AsSpan().SequenceEqual(other._data);
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}
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}
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