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EXPERIMENTAL: Metal backend (#441)

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This is not a continuation of the Metal backend; this is simply bringing
the branch up to date and merging it as-is behind an experiment.

---------

Co-authored-by: Isaac Marovitz <isaacryu@icloud.com>
Co-authored-by: Samuliak <samuliak77@gmail.com>
Co-authored-by: SamoZ256 <96914946+SamoZ256@users.noreply.github.com>
Co-authored-by: Isaac Marovitz <42140194+IsaacMarovitz@users.noreply.github.com>
Co-authored-by: riperiperi <rhy3756547@hotmail.com>
Co-authored-by: Gabriel A <gab.dark.100@gmail.com>
This commit is contained in:
Evan Husted
2024-12-24 00:55:16 -06:00
committed by GitHub
parent 3094df54dd
commit 852823104f
131 changed files with 14992 additions and 140 deletions
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288
src/Ryujinx.Graphics.Metal/StagingBuffer.cs Normal file
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using Ryujinx.Common;
using Ryujinx.Common.Logging;
using Ryujinx.Graphics.GAL;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Runtime.Versioning;
namespace Ryujinx.Graphics.Metal
{
readonly struct StagingBufferReserved
{
public readonly BufferHolder Buffer;
public readonly int Offset;
public readonly int Size;
public StagingBufferReserved(BufferHolder buffer, int offset, int size)
{
Buffer = buffer;
Offset = offset;
Size = size;
}
}
[SupportedOSPlatform("macos")]
class StagingBuffer : IDisposable
{
private const int BufferSize = 32 * 1024 * 1024;
private int _freeOffset;
private int _freeSize;
private readonly MetalRenderer _renderer;
private readonly BufferHolder _buffer;
private readonly int _resourceAlignment;
public readonly BufferHandle Handle;
private readonly struct PendingCopy
{
public FenceHolder Fence { get; }
public int Size { get; }
public PendingCopy(FenceHolder fence, int size)
{
Fence = fence;
Size = size;
fence.Get();
}
}
private readonly Queue<PendingCopy> _pendingCopies;
public StagingBuffer(MetalRenderer renderer, BufferManager bufferManager)
{
_renderer = renderer;
Handle = bufferManager.CreateWithHandle(BufferSize, out _buffer);
_pendingCopies = new Queue<PendingCopy>();
_freeSize = BufferSize;
_resourceAlignment = Constants.MinResourceAlignment;
}
public void PushData(CommandBufferPool cbp, CommandBufferScoped? cbs, BufferHolder dst, int dstOffset, ReadOnlySpan<byte> data)
{
bool isRender = cbs != null;
CommandBufferScoped scoped = cbs ?? cbp.Rent();
// Must push all data to the buffer. If it can't fit, split it up.
while (data.Length > 0)
{
if (_freeSize < data.Length)
{
FreeCompleted();
}
while (_freeSize == 0)
{
if (!WaitFreeCompleted(cbp))
{
if (isRender)
{
_renderer.FlushAllCommands();
scoped = cbp.Rent();
isRender = false;
}
else
{
scoped = cbp.ReturnAndRent(scoped);
}
}
}
int chunkSize = Math.Min(_freeSize, data.Length);
PushDataImpl(scoped, dst, dstOffset, data[..chunkSize]);
dstOffset += chunkSize;
data = data[chunkSize..];
}
if (!isRender)
{
scoped.Dispose();
}
}
private void PushDataImpl(CommandBufferScoped cbs, BufferHolder dst, int dstOffset, ReadOnlySpan<byte> data)
{
var srcBuffer = _buffer.GetBuffer();
var dstBuffer = dst.GetBuffer(dstOffset, data.Length, true);
int offset = _freeOffset;
int capacity = BufferSize - offset;
if (capacity < data.Length)
{
_buffer.SetDataUnchecked(offset, data[..capacity]);
_buffer.SetDataUnchecked(0, data[capacity..]);
BufferHolder.Copy(cbs, srcBuffer, dstBuffer, offset, dstOffset, capacity);
BufferHolder.Copy(cbs, srcBuffer, dstBuffer, 0, dstOffset + capacity, data.Length - capacity);
}
else
{
_buffer.SetDataUnchecked(offset, data);
BufferHolder.Copy(cbs, srcBuffer, dstBuffer, offset, dstOffset, data.Length);
}
_freeOffset = (offset + data.Length) & (BufferSize - 1);
_freeSize -= data.Length;
Debug.Assert(_freeSize >= 0);
_pendingCopies.Enqueue(new PendingCopy(cbs.GetFence(), data.Length));
}
public bool TryPushData(CommandBufferScoped cbs, BufferHolder dst, int dstOffset, ReadOnlySpan<byte> data)
{
if (data.Length > BufferSize)
{
return false;
}
if (_freeSize < data.Length)
{
FreeCompleted();
if (_freeSize < data.Length)
{
return false;
}
}
PushDataImpl(cbs, dst, dstOffset, data);
return true;
}
private StagingBufferReserved ReserveDataImpl(CommandBufferScoped cbs, int size, int alignment)
{
// Assumes the caller has already determined that there is enough space.
int offset = BitUtils.AlignUp(_freeOffset, alignment);
int padding = offset - _freeOffset;
int capacity = Math.Min(_freeSize, BufferSize - offset);
int reservedLength = size + padding;
if (capacity < size)
{
offset = 0; // Place at start.
reservedLength += capacity;
}
_freeOffset = (_freeOffset + reservedLength) & (BufferSize - 1);
_freeSize -= reservedLength;
Debug.Assert(_freeSize >= 0);
_pendingCopies.Enqueue(new PendingCopy(cbs.GetFence(), reservedLength));
return new StagingBufferReserved(_buffer, offset, size);
}
private int GetContiguousFreeSize(int alignment)
{
int alignedFreeOffset = BitUtils.AlignUp(_freeOffset, alignment);
int padding = alignedFreeOffset - _freeOffset;
// Free regions:
// - Aligned free offset to end (minimum free size - padding)
// - 0 to _freeOffset + freeSize wrapped (only if free area contains 0)
int endOffset = (_freeOffset + _freeSize) & (BufferSize - 1);
return Math.Max(
Math.Min(_freeSize - padding, BufferSize - alignedFreeOffset),
endOffset <= _freeOffset ? Math.Min(_freeSize, endOffset) : 0
);
}
/// <summary>
/// Reserve a range on the staging buffer for the current command buffer and upload data to it.
/// </summary>
/// <param name="cbs">Command buffer to reserve the data on</param>
/// <param name="size">The minimum size the reserved data requires</param>
/// <param name="alignment">The required alignment for the buffer offset</param>
/// <returns>The reserved range of the staging buffer</returns>
public StagingBufferReserved? TryReserveData(CommandBufferScoped cbs, int size, int alignment)
{
if (size > BufferSize)
{
return null;
}
// Temporary reserved data cannot be fragmented.
if (GetContiguousFreeSize(alignment) < size)
{
FreeCompleted();
if (GetContiguousFreeSize(alignment) < size)
{
Logger.Debug?.PrintMsg(LogClass.Gpu, $"Staging buffer out of space to reserve data of size {size}.");
return null;
}
}
return ReserveDataImpl(cbs, size, alignment);
}
/// <summary>
/// Reserve a range on the staging buffer for the current command buffer and upload data to it.
/// Uses the most permissive byte alignment.
/// </summary>
/// <param name="cbs">Command buffer to reserve the data on</param>
/// <param name="size">The minimum size the reserved data requires</param>
/// <returns>The reserved range of the staging buffer</returns>
public StagingBufferReserved? TryReserveData(CommandBufferScoped cbs, int size)
{
return TryReserveData(cbs, size, _resourceAlignment);
}
private bool WaitFreeCompleted(CommandBufferPool cbp)
{
if (_pendingCopies.TryPeek(out var pc))
{
if (!pc.Fence.IsSignaled())
{
if (cbp.IsFenceOnRentedCommandBuffer(pc.Fence))
{
return false;
}
pc.Fence.Wait();
}
var dequeued = _pendingCopies.Dequeue();
Debug.Assert(dequeued.Fence == pc.Fence);
_freeSize += pc.Size;
pc.Fence.Put();
}
return true;
}
public void FreeCompleted()
{
FenceHolder signalledFence = null;
while (_pendingCopies.TryPeek(out var pc) && (pc.Fence == signalledFence || pc.Fence.IsSignaled()))
{
signalledFence = pc.Fence; // Already checked - don't need to do it again.
var dequeued = _pendingCopies.Dequeue();
Debug.Assert(dequeued.Fence == pc.Fence);
_freeSize += pc.Size;
pc.Fence.Put();
}
}
public void Dispose()
{
_renderer.BufferManager.Delete(Handle);
while (_pendingCopies.TryDequeue(out var pc))
{
pc.Fence.Put();
}
}
}
}