forked from Mirror/Ryujinx
923089a298
* Fast path for Inline-to-Memory texture data transfers * Only do it for block linear textures to be on the safe side
454 lines
20 KiB
C#
454 lines
20 KiB
C#
using Ryujinx.Common;
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using Ryujinx.Graphics.Device;
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using Ryujinx.Graphics.Gpu.Engine.Threed;
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using Ryujinx.Graphics.Gpu.Memory;
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using Ryujinx.Graphics.Texture;
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using System;
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using System.Collections.Generic;
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using System.Runtime.CompilerServices;
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using System.Runtime.Intrinsics;
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namespace Ryujinx.Graphics.Gpu.Engine.Dma
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{
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/// <summary>
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/// Represents a DMA copy engine class.
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/// </summary>
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class DmaClass : IDeviceState
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{
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private readonly GpuContext _context;
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private readonly GpuChannel _channel;
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private readonly ThreedClass _3dEngine;
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private readonly DeviceState<DmaClassState> _state;
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/// <summary>
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/// Copy flags passed on DMA launch.
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/// </summary>
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[Flags]
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private enum CopyFlags
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{
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SrcLinear = 1 << 7,
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DstLinear = 1 << 8,
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MultiLineEnable = 1 << 9,
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RemapEnable = 1 << 10
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}
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/// <summary>
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/// Creates a new instance of the DMA copy engine class.
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/// </summary>
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/// <param name="context">GPU context</param>
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/// <param name="channel">GPU channel</param>
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/// <param name="threedEngine">3D engine</param>
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public DmaClass(GpuContext context, GpuChannel channel, ThreedClass threedEngine)
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{
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_context = context;
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_channel = channel;
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_3dEngine = threedEngine;
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_state = new DeviceState<DmaClassState>(new Dictionary<string, RwCallback>
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{
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{ nameof(DmaClassState.LaunchDma), new RwCallback(LaunchDma, null) }
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});
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}
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/// <summary>
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/// Reads data from the class registers.
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/// </summary>
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/// <param name="offset">Register byte offset</param>
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/// <returns>Data at the specified offset</returns>
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public int Read(int offset) => _state.Read(offset);
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/// <summary>
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/// Writes data to the class registers.
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/// </summary>
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/// <param name="offset">Register byte offset</param>
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/// <param name="data">Data to be written</param>
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public void Write(int offset, int data) => _state.Write(offset, data);
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/// <summary>
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/// Determine if a buffer-to-texture region covers the entirety of a texture.
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/// </summary>
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/// <param name="tex">Texture to compare</param>
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/// <param name="linear">True if the texture is linear, false if block linear</param>
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/// <param name="bpp">Texture bytes per pixel</param>
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/// <param name="stride">Texture stride</param>
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/// <param name="xCount">Number of pixels to be copied</param>
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/// <param name="yCount">Number of lines to be copied</param>
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/// <returns></returns>
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private static bool IsTextureCopyComplete(DmaTexture tex, bool linear, int bpp, int stride, int xCount, int yCount)
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{
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if (linear)
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{
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// If the stride is negative, the texture has to be flipped, so
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// the fast copy is not trivial, use the slow path.
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if (stride <= 0)
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{
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return false;
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}
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int alignWidth = Constants.StrideAlignment / bpp;
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return stride / bpp == BitUtils.AlignUp(xCount, alignWidth);
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}
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else
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{
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int alignWidth = Constants.GobAlignment / bpp;
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return tex.RegionX == 0 &&
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tex.RegionY == 0 &&
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tex.Width == BitUtils.AlignUp(xCount, alignWidth) &&
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tex.Height == yCount;
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}
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}
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/// <summary>
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/// Releases a semaphore for a given LaunchDma method call.
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/// </summary>
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/// <param name="argument">The LaunchDma call argument</param>
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private void ReleaseSemaphore(int argument)
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{
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LaunchDmaSemaphoreType type = (LaunchDmaSemaphoreType)((argument >> 3) & 0x3);
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if (type != LaunchDmaSemaphoreType.None)
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{
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ulong address = ((ulong)_state.State.SetSemaphoreA << 32) | _state.State.SetSemaphoreB;
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if (type == LaunchDmaSemaphoreType.ReleaseOneWordSemaphore)
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{
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_channel.MemoryManager.Write(address, _state.State.SetSemaphorePayload);
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}
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else /* if (type == LaunchDmaSemaphoreType.ReleaseFourWordSemaphore) */
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{
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_channel.MemoryManager.Write(address + 8, _context.GetTimestamp());
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_channel.MemoryManager.Write(address, (ulong)_state.State.SetSemaphorePayload);
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}
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}
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}
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/// <summary>
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/// Performs a buffer to buffer, or buffer to texture copy.
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/// </summary>
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/// <param name="argument">The LaunchDma call argument</param>
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private void DmaCopy(int argument)
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{
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var memoryManager = _channel.MemoryManager;
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CopyFlags copyFlags = (CopyFlags)argument;
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bool srcLinear = copyFlags.HasFlag(CopyFlags.SrcLinear);
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bool dstLinear = copyFlags.HasFlag(CopyFlags.DstLinear);
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bool copy2D = copyFlags.HasFlag(CopyFlags.MultiLineEnable);
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bool remap = copyFlags.HasFlag(CopyFlags.RemapEnable);
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uint size = _state.State.LineLengthIn;
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if (size == 0)
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{
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return;
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}
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ulong srcGpuVa = ((ulong)_state.State.OffsetInUpperUpper << 32) | _state.State.OffsetInLower;
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ulong dstGpuVa = ((ulong)_state.State.OffsetOutUpperUpper << 32) | _state.State.OffsetOutLower;
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int xCount = (int)_state.State.LineLengthIn;
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int yCount = (int)_state.State.LineCount;
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_3dEngine.CreatePendingSyncs();
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_3dEngine.FlushUboDirty();
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if (copy2D)
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{
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// Buffer to texture copy.
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int componentSize = (int)_state.State.SetRemapComponentsComponentSize + 1;
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int srcBpp = remap ? ((int)_state.State.SetRemapComponentsNumSrcComponents + 1) * componentSize : 1;
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int dstBpp = remap ? ((int)_state.State.SetRemapComponentsNumDstComponents + 1) * componentSize : 1;
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var dst = Unsafe.As<uint, DmaTexture>(ref _state.State.SetDstBlockSize);
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var src = Unsafe.As<uint, DmaTexture>(ref _state.State.SetSrcBlockSize);
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int srcRegionX = 0, srcRegionY = 0, dstRegionX = 0, dstRegionY = 0;
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if (!srcLinear)
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{
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srcRegionX = src.RegionX;
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srcRegionY = src.RegionY;
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}
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if (!dstLinear)
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{
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dstRegionX = dst.RegionX;
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dstRegionY = dst.RegionY;
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}
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int srcStride = (int)_state.State.PitchIn;
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int dstStride = (int)_state.State.PitchOut;
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var srcCalculator = new OffsetCalculator(
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src.Width,
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src.Height,
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srcStride,
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srcLinear,
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src.MemoryLayout.UnpackGobBlocksInY(),
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src.MemoryLayout.UnpackGobBlocksInZ(),
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srcBpp);
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var dstCalculator = new OffsetCalculator(
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dst.Width,
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dst.Height,
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dstStride,
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dstLinear,
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dst.MemoryLayout.UnpackGobBlocksInY(),
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dst.MemoryLayout.UnpackGobBlocksInZ(),
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dstBpp);
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(int srcBaseOffset, int srcSize) = srcCalculator.GetRectangleRange(srcRegionX, srcRegionY, xCount, yCount);
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(int dstBaseOffset, int dstSize) = dstCalculator.GetRectangleRange(dstRegionX, dstRegionY, xCount, yCount);
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if (srcLinear && srcStride < 0)
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{
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srcBaseOffset += srcStride * (yCount - 1);
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}
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if (dstLinear && dstStride < 0)
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{
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dstBaseOffset += dstStride * (yCount - 1);
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}
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ReadOnlySpan<byte> srcSpan = memoryManager.GetSpan(srcGpuVa + (ulong)srcBaseOffset, srcSize, true);
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bool completeSource = IsTextureCopyComplete(src, srcLinear, srcBpp, srcStride, xCount, yCount);
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bool completeDest = IsTextureCopyComplete(dst, dstLinear, dstBpp, dstStride, xCount, yCount);
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if (completeSource && completeDest)
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{
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var target = memoryManager.Physical.TextureCache.FindTexture(
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memoryManager,
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dstGpuVa,
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dstBpp,
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dstStride,
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dst.Height,
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xCount,
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yCount,
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dstLinear,
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dst.MemoryLayout.UnpackGobBlocksInY(),
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dst.MemoryLayout.UnpackGobBlocksInZ());
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if (target != null)
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{
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ReadOnlySpan<byte> data;
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if (srcLinear)
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{
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data = LayoutConverter.ConvertLinearStridedToLinear(
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target.Info.Width,
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target.Info.Height,
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1,
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1,
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xCount * srcBpp,
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srcStride,
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target.Info.FormatInfo.BytesPerPixel,
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srcSpan);
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}
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else
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{
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data = LayoutConverter.ConvertBlockLinearToLinear(
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src.Width,
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src.Height,
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src.Depth,
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1,
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1,
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1,
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1,
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1,
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srcBpp,
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src.MemoryLayout.UnpackGobBlocksInY(),
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src.MemoryLayout.UnpackGobBlocksInZ(),
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1,
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new SizeInfo((int)target.Size),
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srcSpan);
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}
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target.SynchronizeMemory();
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target.SetData(data);
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target.SignalModified();
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return;
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}
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else if (srcCalculator.LayoutMatches(dstCalculator))
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{
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// No layout conversion has to be performed, just copy the data entirely.
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memoryManager.Write(dstGpuVa + (ulong)dstBaseOffset, srcSpan);
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return;
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}
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}
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unsafe bool Convert<T>(Span<byte> dstSpan, ReadOnlySpan<byte> srcSpan) where T : unmanaged
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{
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if (srcLinear && dstLinear && srcBpp == dstBpp)
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{
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// Optimized path for purely linear copies - we don't need to calculate every single byte offset,
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// and we can make use of Span.CopyTo which is very very fast (even compared to pointers)
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for (int y = 0; y < yCount; y++)
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{
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srcCalculator.SetY(srcRegionY + y);
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dstCalculator.SetY(dstRegionY + y);
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int srcOffset = srcCalculator.GetOffset(srcRegionX);
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int dstOffset = dstCalculator.GetOffset(dstRegionX);
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srcSpan.Slice(srcOffset - srcBaseOffset, xCount * srcBpp)
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.CopyTo(dstSpan.Slice(dstOffset - dstBaseOffset, xCount * dstBpp));
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}
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}
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else
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{
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fixed (byte* dstPtr = dstSpan, srcPtr = srcSpan)
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{
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byte* dstBase = dstPtr - dstBaseOffset; // Layout offset is relative to the base, so we need to subtract the span's offset.
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byte* srcBase = srcPtr - srcBaseOffset;
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for (int y = 0; y < yCount; y++)
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{
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srcCalculator.SetY(srcRegionY + y);
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dstCalculator.SetY(dstRegionY + y);
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for (int x = 0; x < xCount; x++)
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{
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int srcOffset = srcCalculator.GetOffset(srcRegionX + x);
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int dstOffset = dstCalculator.GetOffset(dstRegionX + x);
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*(T*)(dstBase + dstOffset) = *(T*)(srcBase + srcOffset);
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}
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}
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}
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}
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return true;
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}
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// OPT: This allocates a (potentially) huge temporary array and then copies an existing
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// region of memory into it, data that might get overwritten entirely anyways. Ideally this should
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// all be rewritten to use pooled arrays, but that gets complicated with packed data and strides
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Span<byte> dstSpan = memoryManager.GetSpan(dstGpuVa + (ulong)dstBaseOffset, dstSize).ToArray();
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bool _ = srcBpp switch
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{
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1 => Convert<byte>(dstSpan, srcSpan),
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2 => Convert<ushort>(dstSpan, srcSpan),
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4 => Convert<uint>(dstSpan, srcSpan),
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8 => Convert<ulong>(dstSpan, srcSpan),
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12 => Convert<Bpp12Pixel>(dstSpan, srcSpan),
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16 => Convert<Vector128<byte>>(dstSpan, srcSpan),
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_ => throw new NotSupportedException($"Unable to copy ${srcBpp} bpp pixel format.")
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};
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memoryManager.Write(dstGpuVa + (ulong)dstBaseOffset, dstSpan);
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}
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else
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{
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if (remap &&
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_state.State.SetRemapComponentsDstX == SetRemapComponentsDst.ConstA &&
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_state.State.SetRemapComponentsDstY == SetRemapComponentsDst.ConstA &&
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_state.State.SetRemapComponentsDstZ == SetRemapComponentsDst.ConstA &&
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_state.State.SetRemapComponentsDstW == SetRemapComponentsDst.ConstA &&
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_state.State.SetRemapComponentsNumSrcComponents == SetRemapComponentsNumComponents.One &&
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_state.State.SetRemapComponentsNumDstComponents == SetRemapComponentsNumComponents.One &&
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_state.State.SetRemapComponentsComponentSize == SetRemapComponentsComponentSize.Four)
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{
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// Fast path for clears when remap is enabled.
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memoryManager.Physical.BufferCache.ClearBuffer(memoryManager, dstGpuVa, size * 4, _state.State.SetRemapConstA);
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}
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else
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{
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// TODO: Implement remap functionality.
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// Buffer to buffer copy.
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bool srcIsPitchKind = memoryManager.GetKind(srcGpuVa).IsPitch();
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bool dstIsPitchKind = memoryManager.GetKind(dstGpuVa).IsPitch();
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if (!srcIsPitchKind && dstIsPitchKind)
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{
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CopyGobBlockLinearToLinear(memoryManager, srcGpuVa, dstGpuVa, size);
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}
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else if (srcIsPitchKind && !dstIsPitchKind)
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{
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CopyGobLinearToBlockLinear(memoryManager, srcGpuVa, dstGpuVa, size);
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}
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else
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{
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memoryManager.Physical.BufferCache.CopyBuffer(memoryManager, srcGpuVa, dstGpuVa, size);
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}
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}
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}
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}
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/// <summary>
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/// Copies block linear data with block linear GOBs to a block linear destination with linear GOBs.
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/// </summary>
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/// <param name="memoryManager">GPU memory manager</param>
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/// <param name="srcGpuVa">Source GPU virtual address</param>
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/// <param name="dstGpuVa">Destination GPU virtual address</param>
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/// <param name="size">Size in bytes of the copy</param>
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private static void CopyGobBlockLinearToLinear(MemoryManager memoryManager, ulong srcGpuVa, ulong dstGpuVa, ulong size)
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{
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if (((srcGpuVa | dstGpuVa | size) & 0xf) == 0)
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{
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for (ulong offset = 0; offset < size; offset += 16)
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{
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Vector128<byte> data = memoryManager.Read<Vector128<byte>>(ConvertGobLinearToBlockLinearAddress(srcGpuVa + offset), true);
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memoryManager.Write(dstGpuVa + offset, data);
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}
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}
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else
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{
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for (ulong offset = 0; offset < size; offset++)
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{
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byte data = memoryManager.Read<byte>(ConvertGobLinearToBlockLinearAddress(srcGpuVa + offset), true);
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memoryManager.Write(dstGpuVa + offset, data);
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}
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}
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}
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/// <summary>
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/// Copies block linear data with linear GOBs to a block linear destination with block linear GOBs.
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/// </summary>
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/// <param name="memoryManager">GPU memory manager</param>
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/// <param name="srcGpuVa">Source GPU virtual address</param>
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/// <param name="dstGpuVa">Destination GPU virtual address</param>
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/// <param name="size">Size in bytes of the copy</param>
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private static void CopyGobLinearToBlockLinear(MemoryManager memoryManager, ulong srcGpuVa, ulong dstGpuVa, ulong size)
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{
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if (((srcGpuVa | dstGpuVa | size) & 0xf) == 0)
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{
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for (ulong offset = 0; offset < size; offset += 16)
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{
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Vector128<byte> data = memoryManager.Read<Vector128<byte>>(srcGpuVa + offset, true);
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memoryManager.Write(ConvertGobLinearToBlockLinearAddress(dstGpuVa + offset), data);
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}
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}
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else
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{
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for (ulong offset = 0; offset < size; offset++)
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{
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byte data = memoryManager.Read<byte>(srcGpuVa + offset, true);
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memoryManager.Write(ConvertGobLinearToBlockLinearAddress(dstGpuVa + offset), data);
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}
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}
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}
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/// <summary>
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/// Calculates the GOB block linear address from a linear address.
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/// </summary>
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/// <param name="address">Linear address</param>
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/// <returns>Block linear address</returns>
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private static ulong ConvertGobLinearToBlockLinearAddress(ulong address)
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{
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// y2 y1 y0 x5 x4 x3 x2 x1 x0 -> x5 y2 y1 x4 y0 x3 x2 x1 x0
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return (address & ~0x1f0UL) |
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((address & 0x40) >> 2) |
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((address & 0x10) << 1) |
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((address & 0x180) >> 1) |
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((address & 0x20) << 3);
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}
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/// <summary>
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/// Performs a buffer to buffer, or buffer to texture copy, then optionally releases a semaphore.
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/// </summary>
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/// <param name="argument">Method call argument</param>
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private void LaunchDma(int argument)
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{
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DmaCopy(argument);
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ReleaseSemaphore(argument);
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}
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}
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}
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