Ryujinx/Ryujinx.Graphics.Gpu/Memory/MemoryAccessor.cs
gdkchan 4d02a2d2c0
New NVDEC and VIC implementation (#1384)
* Initial NVDEC and VIC implementation

* Update FFmpeg.AutoGen to 4.3.0

* Add nvdec dependencies for Windows

* Unify some VP9 structures

* Rename VP9 structure fields

* Improvements to Video API

* XML docs for Common.Memory

* Remove now unused or redundant overloads from MemoryAccessor

* NVDEC UV surface read/write scalar paths

* Add FIXME comments about hacky things/stuff that will need to be fixed in the future

* Cleaned up VP9 memory allocation

* Remove some debug logs

* Rename some VP9 structs

* Remove unused struct

* No need to compile Ryujinx.Graphics.Host1x with unsafe anymore

* Name AsyncWorkQueue threads to make debugging easier

* Make Vp9PictureInfo a ref struct

* LayoutConverter no longer needs the depth argument (broken by rebase)

* Pooling of VP9 buffers, plus fix a memory leak on VP9

* Really wish VS could rename projects properly...

* Address feedback

* Remove using

* Catch OperationCanceledException

* Add licensing informations

* Add THIRDPARTY.md to release too

Co-authored-by: Thog <me@thog.eu>
2020-07-12 05:07:01 +02:00

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3.1 KiB
C#

using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
namespace Ryujinx.Graphics.Gpu.Memory
{
/// <summary>
/// GPU mapped memory accessor.
/// </summary>
public class MemoryAccessor
{
private GpuContext _context;
/// <summary>
/// Creates a new instance of the GPU memory accessor.
/// </summary>
/// <param name="context">GPU context that the memory accessor belongs to</param>
public MemoryAccessor(GpuContext context)
{
_context = context;
}
/// <summary>
/// Reads a byte array from GPU mapped memory.
/// </summary>
/// <param name="gpuVa">GPU virtual address where the data is located</param>
/// <param name="size">Size of the data in bytes</param>
/// <returns>Byte array with the data</returns>
public byte[] ReadBytes(ulong gpuVa, int size)
{
return GetSpan(gpuVa, size).ToArray();
}
/// <summary>
/// Gets a read-only span of data from GPU mapped memory.
/// This reads as much data as possible, up to the specified maximum size.
/// </summary>
/// <param name="gpuVa">GPU virtual address where the data is located</param>
/// <param name="size">Size of the data</param>
/// <returns>The span of the data at the specified memory location</returns>
public ReadOnlySpan<byte> GetSpan(ulong gpuVa, int size)
{
ulong processVa = _context.MemoryManager.Translate(gpuVa);
return _context.PhysicalMemory.GetSpan(processVa, size);
}
/// <summary>
/// Reads data from GPU mapped memory.
/// </summary>
/// <typeparam name="T">Type of the data</typeparam>
/// <param name="gpuVa">GPU virtual address where the data is located</param>
/// <returns>The data at the specified memory location</returns>
public T Read<T>(ulong gpuVa) where T : unmanaged
{
ulong processVa = _context.MemoryManager.Translate(gpuVa);
return MemoryMarshal.Cast<byte, T>(_context.PhysicalMemory.GetSpan(processVa, Unsafe.SizeOf<T>()))[0];
}
/// <summary>
/// Writes a 32-bits signed integer to GPU mapped memory.
/// </summary>
/// <param name="gpuVa">GPU virtual address to write the value into</param>
/// <param name="value">The value to be written</param>
public void Write(ulong gpuVa, int value)
{
ulong processVa = _context.MemoryManager.Translate(gpuVa);
_context.PhysicalMemory.Write(processVa, BitConverter.GetBytes(value));
}
/// <summary>
/// Writes data to GPU mapped memory.
/// </summary>
/// <param name="gpuVa">GPU virtual address to write the data into</param>
/// <param name="data">The data to be written</param>
public void Write(ulong gpuVa, ReadOnlySpan<byte> data)
{
ulong processVa = _context.MemoryManager.Translate(gpuVa);
_context.PhysicalMemory.Write(processVa, data);
}
}
}