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92 lines
2.9 KiB
C#
92 lines
2.9 KiB
C#
using System;
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using System.Runtime.InteropServices;
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namespace Ryujinx.Graphics.Gpu.Image
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{
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/// <summary>
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/// Sampler pool.
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/// </summary>
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class SamplerPool : Pool<Sampler>
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{
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private int _sequenceNumber;
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/// <summary>
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/// Constructs a new instance of the sampler pool.
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/// </summary>
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/// <param name="context">GPU context that the sampler pool belongs to</param>
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/// <param name="address">Address of the sampler pool in guest memory</param>
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/// <param name="maximumId">Maximum sampler ID of the sampler pool (equal to maximum samplers minus one)</param>
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public SamplerPool(GpuContext context, ulong address, int maximumId) : base(context, address, maximumId) { }
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/// <summary>
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/// Gets the sampler with the given ID.
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/// </summary>
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/// <param name="id">ID of the sampler. This is effectively a zero-based index</param>
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/// <returns>The sampler with the given ID</returns>
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public override Sampler Get(int id)
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{
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if ((uint)id >= Items.Length)
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{
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return null;
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}
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if (_sequenceNumber != Context.SequenceNumber)
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{
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_sequenceNumber = Context.SequenceNumber;
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SynchronizeMemory();
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}
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Sampler sampler = Items[id];
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if (sampler == null)
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{
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ulong address = Address + (ulong)(uint)id * DescriptorSize;
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ReadOnlySpan<byte> data = Context.PhysicalMemory.GetSpan(address, DescriptorSize);
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SamplerDescriptor descriptor = MemoryMarshal.Cast<byte, SamplerDescriptor>(data)[0];
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sampler = new Sampler(Context, descriptor);
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Items[id] = sampler;
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}
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return sampler;
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}
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/// <summary>
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/// Implementation of the sampler pool range invalidation.
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/// </summary>
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/// <param name="address">Start address of the range of the sampler pool</param>
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/// <param name="size">Size of the range being invalidated</param>
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protected override void InvalidateRangeImpl(ulong address, ulong size)
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{
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ulong endAddress = address + size;
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for (; address < endAddress; address += DescriptorSize)
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{
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int id = (int)((address - Address) / DescriptorSize);
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Sampler sampler = Items[id];
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if (sampler != null)
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{
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sampler.Dispose();
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Items[id] = null;
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}
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}
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}
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/// <summary>
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/// Deletes a given sampler pool entry.
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/// The host memory used by the sampler is released by the driver.
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/// </summary>
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/// <param name="item">The entry to be deleted</param>
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protected override void Delete(Sampler item)
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{
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item?.Dispose();
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}
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}
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} |