Ryujinx/Ryujinx.Graphics.Gpu/Memory/Buffer.cs
riperiperi 54ea2285f0
POWER - Performance Optimizations With Extensive Ramifications (#2286)
* Refactoring of KMemoryManager class

* Replace some trivial uses of DRAM address with VA

* Get rid of GetDramAddressFromVa

* Abstracting more operations on derived page table class

* Run auto-format on KPageTableBase

* Managed to make TryConvertVaToPa private, few uses remains now

* Implement guest physical pages ref counting, remove manual freeing

* Make DoMmuOperation private and call new abstract methods only from the base class

* Pass pages count rather than size on Map/UnmapMemory

* Change memory managers to take host pointers

* Fix a guest memory leak and simplify KPageTable

* Expose new methods for host range query and mapping

* Some refactoring of MapPagesFromClientProcess to allow proper page ref counting and mapping without KPageLists

* Remove more uses of AddVaRangeToPageList, now only one remains (shared memory page checking)

* Add a SharedMemoryStorage class, will be useful for host mapping

* Sayonara AddVaRangeToPageList, you served us well

* Start to implement host memory mapping (WIP)

* Support memory tracking through host exception handling

* Fix some access violations from HLE service guest memory access and CPU

* Fix memory tracking

* Fix mapping list bugs, including a race and a error adding mapping ranges

* Simple page table for memory tracking

* Simple "volatile" region handle mode

* Update UBOs directly (experimental, rough)

* Fix the overlap check

* Only set non-modified buffers as volatile

* Fix some memory tracking issues

* Fix possible race in MapBufferFromClientProcess (block list updates were not locked)

* Write uniform update to memory immediately, only defer the buffer set.

* Fix some memory tracking issues

* Pass correct pages count on shared memory unmap

* Armeilleure Signal Handler v1 + Unix changes

Unix currently behaves like windows, rather than remapping physical

* Actually check if the host platform is unix

* Fix decommit on linux.

* Implement windows 10 placeholder shared memory, fix a buffer issue.

* Make PTC version something that will never match with master

* Remove testing variable for block count

* Add reference count for memory manager, fix dispose

Can still deadlock with OpenAL

* Add address validation, use page table for mapped check, add docs

Might clean up the page table traversing routines.

* Implement batched mapping/tracking.

* Move documentation, fix tests.

* Cleanup uniform buffer update stuff.

* Remove unnecessary assignment.

* Add unsafe host mapped memory switch

On by default. Would be good to turn this off for untrusted code (homebrew, exefs mods) and give the user the option to turn it on manually, though that requires some UI work.

* Remove C# exception handlers

They have issues due to current .NET limitations, so the meilleure one fully replaces them for now.

* Fix MapPhysicalMemory on the software MemoryManager.

* Null check for GetHostAddress, docs

* Add configuration for setting memory manager mode (not in UI yet)

* Add config to UI

* Fix type mismatch on Unix signal handler code emit

* Fix 6GB DRAM mode.

The size can be greater than `uint.MaxValue` when the DRAM is >4GB.

* Address some feedback.

* More detailed error if backing memory cannot be mapped.

* SetLastError on all OS functions for consistency

* Force pages dirty with UBO update instead of setting them directly.

Seems to be much faster across a few games. Need retesting.

* Rebase, configuration rework, fix mem tracking regression

* Fix race in FreePages

* Set memory managers null after decrementing ref count

* Remove readonly keyword, as this is now modified.

* Use a local variable for the signal handler rather than a register.

* Fix bug with buffer resize, and index/uniform buffer binding.

Should fix flickering in games.

* Add InvalidAccessHandler to MemoryTracking

Doesn't do anything yet

* Call invalid access handler on unmapped read/write.

Same rules as the regular memory manager.

* Make unsafe mapped memory its own MemoryManagerType

* Move FlushUboDirty into UpdateState.

* Buffer dirty cache, rather than ubo cache

Much cleaner, may be reusable for Inline2Memory updates.

* This doesn't return anything anymore.

* Add sigaction remove methods, correct a few function signatures.

* Return empty list of physical regions for size 0.

* Also on AddressSpaceManager

Co-authored-by: gdkchan <gab.dark.100@gmail.com>
2021-05-24 22:52:44 +02:00

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17 KiB
C#

using Ryujinx.Cpu.Tracking;
using Ryujinx.Graphics.GAL;
using Ryujinx.Memory.Range;
using Ryujinx.Memory.Tracking;
using System;
namespace Ryujinx.Graphics.Gpu.Memory
{
/// <summary>
/// Buffer, used to store vertex and index data, uniform and storage buffers, and others.
/// </summary>
class Buffer : IRange, IDisposable
{
private static ulong GranularBufferThreshold = 4096;
private readonly GpuContext _context;
/// <summary>
/// Host buffer handle.
/// </summary>
public BufferHandle Handle { get; }
/// <summary>
/// Start address of the buffer in guest memory.
/// </summary>
public ulong Address { get; }
/// <summary>
/// Size of the buffer in bytes.
/// </summary>
public ulong Size { get; }
/// <summary>
/// End address of the buffer in guest memory.
/// </summary>
public ulong EndAddress => Address + Size;
/// <summary>
/// Increments when the buffer is (partially) unmapped or disposed.
/// </summary>
public int UnmappedSequence { get; private set; }
/// <summary>
/// Ranges of the buffer that have been modified on the GPU.
/// Ranges defined here cannot be updated from CPU until a CPU waiting sync point is reached.
/// Then, write tracking will signal, wait for GPU sync (generated at the syncpoint) and flush these regions.
/// </summary>
/// <remarks>
/// This is null until at least one modification occurs.
/// </remarks>
private BufferModifiedRangeList _modifiedRanges = null;
private readonly CpuMultiRegionHandle _memoryTrackingGranular;
private readonly CpuRegionHandle _memoryTracking;
private readonly RegionSignal _externalFlushDelegate;
private readonly Action<ulong, ulong> _loadDelegate;
private readonly Action<ulong, ulong> _modifiedDelegate;
private int _sequenceNumber;
private bool _useGranular;
private bool _syncActionRegistered;
/// <summary>
/// Creates a new instance of the buffer.
/// </summary>
/// <param name="context">GPU context that the buffer belongs to</param>
/// <param name="address">Start address of the buffer</param>
/// <param name="size">Size of the buffer in bytes</param>
public Buffer(GpuContext context, ulong address, ulong size)
{
_context = context;
Address = address;
Size = size;
Handle = context.Renderer.CreateBuffer((int)size);
_useGranular = size > GranularBufferThreshold;
if (_useGranular)
{
_memoryTrackingGranular = context.PhysicalMemory.BeginGranularTracking(address, size);
}
else
{
_memoryTracking = context.PhysicalMemory.BeginTracking(address, size);
}
_externalFlushDelegate = new RegionSignal(ExternalFlush);
_loadDelegate = new Action<ulong, ulong>(LoadRegion);
_modifiedDelegate = new Action<ulong, ulong>(RegionModified);
}
/// <summary>
/// Gets a sub-range from the buffer, from a start address till the end of the buffer.
/// </summary>
/// <remarks>
/// This can be used to bind and use sub-ranges of the buffer on the host API.
/// </remarks>
/// <param name="address">Start address of the sub-range, must be greater than or equal to the buffer address</param>
/// <returns>The buffer sub-range</returns>
public BufferRange GetRange(ulong address)
{
ulong offset = address - Address;
return new BufferRange(Handle, (int)offset, (int)(Size - offset));
}
/// <summary>
/// Gets a sub-range from the buffer.
/// </summary>
/// <remarks>
/// This can be used to bind and use sub-ranges of the buffer on the host API.
/// </remarks>
/// <param name="address">Start address of the sub-range, must be greater than or equal to the buffer address</param>
/// <param name="size">Size in bytes of the sub-range, must be less than or equal to the buffer size</param>
/// <returns>The buffer sub-range</returns>
public BufferRange GetRange(ulong address, ulong size)
{
int offset = (int)(address - Address);
return new BufferRange(Handle, offset, (int)size);
}
/// <summary>
/// Checks if a given range overlaps with the buffer.
/// </summary>
/// <param name="address">Start address of the range</param>
/// <param name="size">Size in bytes of the range</param>
/// <returns>True if the range overlaps, false otherwise</returns>
public bool OverlapsWith(ulong address, ulong size)
{
return Address < address + size && address < EndAddress;
}
/// <summary>
/// Checks if a given range is fully contained in the buffer.
/// </summary>
/// <param name="address">Start address of the range</param>
/// <param name="size">Size in bytes of the range</param>
/// <returns>True if the range is contained, false otherwise</returns>
public bool FullyContains(ulong address, ulong size)
{
return address >= Address && address + size <= EndAddress;
}
/// <summary>
/// Performs guest to host memory synchronization of the buffer data.
/// </summary>
/// <remarks>
/// This causes the buffer data to be overwritten if a write was detected from the CPU,
/// since the last call to this method.
/// </remarks>
/// <param name="address">Start address of the range to synchronize</param>
/// <param name="size">Size in bytes of the range to synchronize</param>
public void SynchronizeMemory(ulong address, ulong size)
{
if (_useGranular)
{
_memoryTrackingGranular.QueryModified(address, size, _modifiedDelegate, _context.SequenceNumber);
}
else
{
if (_context.SequenceNumber != _sequenceNumber && _memoryTracking.DirtyOrVolatile())
{
_memoryTracking.Reprotect();
if (_modifiedRanges != null)
{
_modifiedRanges.ExcludeModifiedRegions(Address, Size, _loadDelegate);
}
else
{
_context.Renderer.SetBufferData(Handle, 0, _context.PhysicalMemory.GetSpan(Address, (int)Size));
}
_sequenceNumber = _context.SequenceNumber;
}
}
}
/// <summary>
/// Performs guest to host memory synchronization of the buffer data, regardless of sequence number.
/// </summary>
/// <remarks>
/// This causes the buffer data to be overwritten if a write was detected from the CPU,
/// since the last call to this method.
/// </remarks>
/// <param name="address">Start address of the range to synchronize</param>
/// <param name="size">Size in bytes of the range to synchronize</param>
public void ForceSynchronizeMemory(ulong address, ulong size)
{
if (_useGranular)
{
_memoryTrackingGranular.QueryModified(address, size, _modifiedDelegate);
}
else
{
if (_memoryTracking.DirtyOrVolatile())
{
_memoryTracking.Reprotect();
if (_modifiedRanges != null)
{
_modifiedRanges.ExcludeModifiedRegions(Address, Size, _loadDelegate);
}
else
{
_context.Renderer.SetBufferData(Handle, 0, _context.PhysicalMemory.GetSpan(Address, (int)Size));
}
}
}
}
/// <summary>
/// Ensure that the modified range list exists.
/// </summary>
private void EnsureRangeList()
{
if (_modifiedRanges == null)
{
_modifiedRanges = new BufferModifiedRangeList(_context);
}
}
/// <summary>
/// Signal that the given region of the buffer has been modified.
/// </summary>
/// <param name="address">The start address of the modified region</param>
/// <param name="size">The size of the modified region</param>
public void SignalModified(ulong address, ulong size)
{
EnsureRangeList();
_modifiedRanges.SignalModified(address, size);
if (!_syncActionRegistered)
{
_context.RegisterSyncAction(SyncAction);
_syncActionRegistered = true;
}
}
/// <summary>
/// Indicate that mofifications in a given region of this buffer have been overwritten.
/// </summary>
/// <param name="address">The start address of the region</param>
/// <param name="size">The size of the region</param>
public void ClearModified(ulong address, ulong size)
{
if (_modifiedRanges != null)
{
_modifiedRanges.Clear(address, size);
}
}
/// <summary>
/// Action to be performed when a syncpoint is reached after modification.
/// This will register read/write tracking to flush the buffer from GPU when its memory is used.
/// </summary>
private void SyncAction()
{
_syncActionRegistered = false;
if (_useGranular)
{
_modifiedRanges.GetRanges(Address, Size, (address, size) =>
{
_memoryTrackingGranular.RegisterAction(address, size, _externalFlushDelegate);
SynchronizeMemory(address, size);
});
}
else
{
_memoryTracking.RegisterAction(_externalFlushDelegate);
SynchronizeMemory(Address, Size);
}
}
/// <summary>
/// Inherit modified ranges from another buffer.
/// </summary>
/// <param name="from">The buffer to inherit from</param>
public void InheritModifiedRanges(Buffer from)
{
if (from._modifiedRanges != null)
{
if (from._syncActionRegistered && !_syncActionRegistered)
{
_context.RegisterSyncAction(SyncAction);
_syncActionRegistered = true;
}
EnsureRangeList();
_modifiedRanges.InheritRanges(from._modifiedRanges, (ulong address, ulong size) =>
{
if (_useGranular)
{
_memoryTrackingGranular.RegisterAction(address, size, _externalFlushDelegate);
}
else
{
_memoryTracking.RegisterAction(_externalFlushDelegate);
}
});
}
}
/// <summary>
/// Determine if a given region of the buffer has been modified, and must be flushed.
/// </summary>
/// <param name="address">The start address of the region</param>
/// <param name="size">The size of the region</param>
/// <returns></returns>
public bool IsModified(ulong address, ulong size)
{
if (_modifiedRanges != null)
{
return _modifiedRanges.HasRange(address, size);
}
return false;
}
/// <summary>
/// Indicate that a region of the buffer was modified, and must be loaded from memory.
/// </summary>
/// <param name="mAddress">Start address of the modified region</param>
/// <param name="mSize">Size of the modified region</param>
private void RegionModified(ulong mAddress, ulong mSize)
{
if (mAddress < Address)
{
mAddress = Address;
}
ulong maxSize = Address + Size - mAddress;
if (mSize > maxSize)
{
mSize = maxSize;
}
if (_modifiedRanges != null)
{
_modifiedRanges.ExcludeModifiedRegions(mAddress, mSize, _loadDelegate);
}
else
{
LoadRegion(mAddress, mSize);
}
}
/// <summary>
/// Load a region of the buffer from memory.
/// </summary>
/// <param name="mAddress">Start address of the modified region</param>
/// <param name="mSize">Size of the modified region</param>
private void LoadRegion(ulong mAddress, ulong mSize)
{
int offset = (int)(mAddress - Address);
_context.Renderer.SetBufferData(Handle, offset, _context.PhysicalMemory.GetSpan(mAddress, (int)mSize));
}
/// <summary>
/// Force a region of the buffer to be dirty. Avoids reprotection and nullifies sequence number check.
/// </summary>
/// <param name="mAddress">Start address of the modified region</param>
/// <param name="mSize">Size of the region to force dirty</param>
public void ForceDirty(ulong mAddress, ulong mSize)
{
if (_modifiedRanges != null)
{
_modifiedRanges.Clear(mAddress, mSize);
}
if (_useGranular)
{
_memoryTrackingGranular.ForceDirty(mAddress, mSize);
}
else
{
_memoryTracking.ForceDirty();
_sequenceNumber--;
}
}
/// <summary>
/// Performs copy of all the buffer data from one buffer to another.
/// </summary>
/// <param name="destination">The destination buffer to copy the data into</param>
/// <param name="dstOffset">The offset of the destination buffer to copy into</param>
public void CopyTo(Buffer destination, int dstOffset)
{
_context.Renderer.Pipeline.CopyBuffer(Handle, destination.Handle, 0, dstOffset, (int)Size);
}
/// <summary>
/// Flushes a range of the buffer.
/// This writes the range data back into guest memory.
/// </summary>
/// <param name="address">Start address of the range</param>
/// <param name="size">Size in bytes of the range</param>
public void Flush(ulong address, ulong size)
{
int offset = (int)(address - Address);
byte[] data = _context.Renderer.GetBufferData(Handle, offset, (int)size);
// TODO: When write tracking shaders, they will need to be aware of changes in overlapping buffers.
_context.PhysicalMemory.WriteUntracked(address, data);
}
/// <summary>
/// Align a given address and size region to page boundaries.
/// </summary>
/// <param name="address">The start address of the region</param>
/// <param name="size">The size of the region</param>
/// <returns>The page aligned address and size</returns>
private static (ulong address, ulong size) PageAlign(ulong address, ulong size)
{
ulong pageMask = MemoryManager.PageMask;
ulong rA = address & ~pageMask;
ulong rS = ((address + size + pageMask) & ~pageMask) - rA;
return (rA, rS);
}
/// <summary>
/// Flush modified ranges of the buffer from another thread.
/// This will flush all modifications made before the active SyncNumber was set, and may block to wait for GPU sync.
/// </summary>
/// <param name="address">Address of the memory action</param>
/// <param name="size">Size in bytes</param>
public void ExternalFlush(ulong address, ulong size)
{
_context.Renderer.BackgroundContextAction(() =>
{
var ranges = _modifiedRanges;
if (ranges != null)
{
(address, size) = PageAlign(address, size);
ranges.WaitForAndGetRanges(address, size, Flush);
}
});
}
/// <summary>
/// Called when part of the memory for this buffer has been unmapped.
/// Calls are from non-GPU threads.
/// </summary>
/// <param name="address">Start address of the unmapped region</param>
/// <param name="size">Size of the unmapped region</param>
public void Unmapped(ulong address, ulong size)
{
_modifiedRanges?.Clear(address, size);
UnmappedSequence++;
}
/// <summary>
/// Disposes the host buffer.
/// </summary>
public void Dispose()
{
_modifiedRanges?.Clear();
_memoryTrackingGranular?.Dispose();
_memoryTracking?.Dispose();
_context.Renderer.DeleteBuffer(Handle);
UnmappedSequence++;
}
}
}