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* Allow textures to have their data partially mapped * Explicitly check for invalid memory ranges on the MultiRangeList * Update GetWritableRegion to also support unmapped ranges
79 lines
2.3 KiB
C#
79 lines
2.3 KiB
C#
using System;
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namespace Ryujinx.Memory.Range
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{
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/// <summary>
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/// Range of memory composed of an address and size.
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/// </summary>
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public struct MemoryRange : IEquatable<MemoryRange>
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{
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/// <summary>
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/// An empty memory range, with a null address and zero size.
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/// </summary>
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public static MemoryRange Empty => new MemoryRange(0UL, 0);
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/// <summary>
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/// Start address of the range.
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/// </summary>
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public ulong Address { get; }
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/// <summary>
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/// Size of the range in bytes.
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/// </summary>
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public ulong Size { get; }
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/// <summary>
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/// Address where the range ends (exclusive).
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/// </summary>
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public ulong EndAddress => Address + Size;
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/// <summary>
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/// Creates a new memory range with the specified address and size.
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/// </summary>
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/// <param name="address">Start address</param>
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/// <param name="size">Size in bytes</param>
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public MemoryRange(ulong address, ulong size)
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{
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Address = address;
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Size = size;
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}
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/// <summary>
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/// Checks if the range overlaps with another.
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/// </summary>
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/// <param name="other">The other range to check for overlap</param>
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/// <returns>True if the ranges overlap, false otherwise</returns>
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public bool OverlapsWith(MemoryRange other)
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{
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ulong thisAddress = Address;
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ulong thisEndAddress = EndAddress;
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ulong otherAddress = other.Address;
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ulong otherEndAddress = other.EndAddress;
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// If any of the ranges if invalid (address + size overflows),
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// then they are never considered to overlap.
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if (thisEndAddress < thisAddress || otherEndAddress < otherAddress)
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{
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return false;
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}
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return thisAddress < otherEndAddress && otherAddress < thisEndAddress;
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}
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public override bool Equals(object obj)
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{
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return obj is MemoryRange other && Equals(other);
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}
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public bool Equals(MemoryRange other)
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{
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return Address == other.Address && Size == other.Size;
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}
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public override int GetHashCode()
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{
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return HashCode.Combine(Address, Size);
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}
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}
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}
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