mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-09-10 21:53:18 +02:00
![gdkchan](/assets/img/avatar_default.png)
* Implement a new physical memory manager and replace DeviceMemory * Proper generic constraints * Fix debug build * Add memory tests * New CPU memory manager and general code cleanup * Remove host memory management from CPU project, use Ryujinx.Memory instead * Fix tests * Document exceptions on MemoryBlock * Fix leak on unix memory allocation * Proper disposal of some objects on tests * Fix JitCache not being set as initialized * GetRef without checks for 8-bits and 16-bits CAS * Add MemoryBlock destructor * Throw in separate method to improve codegen * Address PR feedback * QueryModified improvements * Fix memory write tracking not marking all pages as modified in some cases * Simplify MarkRegionAsModified * Remove XML doc for ghost param * Add back optimization to avoid useless buffer updates * Add Ryujinx.Cpu project, move MemoryManager there and remove MemoryBlockWrapper * Some nits * Do not perform address translation when size is 0 * Address PR feedback and format NativeInterface class * Remove ghost parameter description * Update Ryujinx.Cpu to .NET Core 3.1 * Address PR feedback * Fix build * Return a well defined value for GetPhysicalAddress with invalid VA, and do not return unmapped ranges as modified * Typo
165 lines
5.7 KiB
C#
165 lines
5.7 KiB
C#
using Ryujinx.Graphics.GAL;
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using System;
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namespace Ryujinx.Graphics.Gpu.Memory
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{
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/// <summary>
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/// Buffer, used to store vertex and index data, uniform and storage buffers, and others.
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/// </summary>
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class Buffer : IRange, IDisposable
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{
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private readonly GpuContext _context;
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/// <summary>
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/// Host buffer object.
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/// </summary>
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public IBuffer HostBuffer { get; }
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/// <summary>
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/// Start address of the buffer in guest memory.
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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 buffer in bytes.
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/// </summary>
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public ulong Size { get; }
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/// <summary>
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/// End address of the buffer in guest memory.
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/// </summary>
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public ulong EndAddress => Address + Size;
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private readonly (ulong, ulong)[] _modifiedRanges;
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private readonly int[] _sequenceNumbers;
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/// <summary>
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/// Creates a new instance of the buffer.
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/// </summary>
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/// <param name="context">GPU context that the buffer belongs to</param>
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/// <param name="address">Start address of the buffer</param>
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/// <param name="size">Size of the buffer in bytes</param>
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public Buffer(GpuContext context, ulong address, ulong size)
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{
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_context = context;
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Address = address;
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Size = size;
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HostBuffer = context.Renderer.CreateBuffer((int)size);
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_modifiedRanges = new (ulong, ulong)[size / PhysicalMemory.PageSize];
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_sequenceNumbers = new int[size / MemoryManager.PageSize];
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}
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/// <summary>
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/// Gets a sub-range from the buffer.
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/// </summary>
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/// <remarks>
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/// This can be used to bind and use sub-ranges of the buffer on the host API.
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/// </remarks>
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/// <param name="address">Start address of the sub-range, must be greater than or equal to the buffer address</param>
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/// <param name="size">Size in bytes of the sub-range, must be less than or equal to the buffer size</param>
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/// <returns>The buffer sub-range</returns>
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public BufferRange GetRange(ulong address, ulong size)
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{
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int offset = (int)(address - Address);
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return new BufferRange(HostBuffer, offset, (int)size);
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}
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/// <summary>
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/// Checks if a given range overlaps with the buffer.
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/// </summary>
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/// <param name="address">Start address of the range</param>
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/// <param name="size">Size in bytes of the range</param>
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/// <returns>True if the range overlaps, false otherwise</returns>
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public bool OverlapsWith(ulong address, ulong size)
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{
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return Address < address + size && address < EndAddress;
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}
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/// <summary>
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/// Performs guest to host memory synchronization of the buffer data.
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/// </summary>
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/// <remarks>
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/// This causes the buffer data to be overwritten if a write was detected from the CPU,
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/// since the last call to this method.
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/// </remarks>
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/// <param name="address">Start address of the range to synchronize</param>
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/// <param name="size">Size in bytes of the range to synchronize</param>
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public void SynchronizeMemory(ulong address, ulong size)
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{
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int currentSequenceNumber = _context.SequenceNumber;
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bool needsSync = false;
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ulong buffOffset = address - Address;
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ulong buffEndOffset = (buffOffset + size + MemoryManager.PageMask) & ~MemoryManager.PageMask;
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int startIndex = (int)(buffOffset / MemoryManager.PageSize);
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int endIndex = (int)(buffEndOffset / MemoryManager.PageSize);
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for (int index = startIndex; index < endIndex; index++)
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{
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if (_sequenceNumbers[index] != currentSequenceNumber)
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{
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_sequenceNumbers[index] = currentSequenceNumber;
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needsSync = true;
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}
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}
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if (!needsSync)
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{
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return;
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}
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int count = _context.PhysicalMemory.QueryModified(address, size, ResourceName.Buffer, _modifiedRanges);
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for (int index = 0; index < count; index++)
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{
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(ulong mAddress, ulong mSize) = _modifiedRanges[index];
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int offset = (int)(mAddress - Address);
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HostBuffer.SetData(offset, _context.PhysicalMemory.GetSpan(mAddress, mSize));
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}
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}
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/// <summary>
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/// Performs copy of all the buffer data from one buffer to another.
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/// </summary>
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/// <param name="destination">The destination buffer to copy the data into</param>
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/// <param name="dstOffset">The offset of the destination buffer to copy into</param>
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public void CopyTo(Buffer destination, int dstOffset)
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{
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HostBuffer.CopyTo(destination.HostBuffer, 0, dstOffset, (int)Size);
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}
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/// <summary>
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/// Flushes a range of the buffer.
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/// This writes the range data back into guest memory.
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/// </summary>
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/// <param name="address">Start address of the range</param>
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/// <param name="size">Size in bytes of the range</param>
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public void Flush(ulong address, ulong size)
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{
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int offset = (int)(address - Address);
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byte[] data = HostBuffer.GetData(offset, (int)size);
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_context.PhysicalMemory.Write(address, data);
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}
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/// <summary>
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/// Disposes the host buffer.
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/// </summary>
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public void Dispose()
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{
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HostBuffer.Dispose();
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}
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}
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} |