ryujinx/Ryujinx.Graphics.Gpu/Engine/MethodCopyBuffer.cs

181 lines
7.3 KiB
C#

using Ryujinx.Common;
using Ryujinx.Graphics.Gpu.State;
using Ryujinx.Graphics.Texture;
using System;
namespace Ryujinx.Graphics.Gpu.Engine
{
partial class Methods
{
private const int StrideAlignment = 32;
private const int GobAlignment = 64;
/// <summary>
/// Determine if a buffer-to-texture region covers the entirety of a texture.
/// </summary>
/// <param name="cbp">Copy command parameters</param>
/// <param name="tex">Texture to compare</param>
/// <param name="linear">True if the texture is linear, false if block linear</param>
/// <param name="stride">Texture stride</param>
/// <returns></returns>
private bool IsTextureCopyComplete(CopyBufferParams cbp, CopyBufferTexture tex, bool linear, int stride)
{
if (linear)
{
return tex.RegionX == 0 &&
tex.RegionY == 0 &&
stride == BitUtils.AlignUp(cbp.XCount, StrideAlignment);
}
else
{
return tex.RegionX == 0 &&
tex.RegionY == 0 &&
tex.Width == BitUtils.AlignUp(cbp.XCount, GobAlignment) &&
tex.Height == cbp.YCount;
}
}
/// <summary>
/// Performs a buffer to buffer, or buffer to texture copy.
/// </summary>
/// <param name="state">Current GPU state</param>
/// <param name="argument">Method call argument</param>
private void CopyBuffer(GpuState state, int argument)
{
var cbp = state.Get<CopyBufferParams>(MethodOffset.CopyBufferParams);
var swizzle = state.Get<CopyBufferSwizzle>(MethodOffset.CopyBufferSwizzle);
bool srcLinear = (argument & (1 << 7)) != 0;
bool dstLinear = (argument & (1 << 8)) != 0;
bool copy2D = (argument & (1 << 9)) != 0;
int size = cbp.XCount;
if (size == 0)
{
return;
}
if (copy2D)
{
// Buffer to texture copy.
var dst = state.Get<CopyBufferTexture>(MethodOffset.CopyBufferDstTexture);
var src = state.Get<CopyBufferTexture>(MethodOffset.CopyBufferSrcTexture);
var srcCalculator = new OffsetCalculator(
src.Width,
src.Height,
cbp.SrcStride,
srcLinear,
src.MemoryLayout.UnpackGobBlocksInY(),
src.MemoryLayout.UnpackGobBlocksInZ(),
1);
var dstCalculator = new OffsetCalculator(
dst.Width,
dst.Height,
cbp.DstStride,
dstLinear,
dst.MemoryLayout.UnpackGobBlocksInY(),
dst.MemoryLayout.UnpackGobBlocksInZ(),
1);
ulong srcBaseAddress = _context.MemoryManager.Translate(cbp.SrcAddress.Pack());
ulong dstBaseAddress = _context.MemoryManager.Translate(cbp.DstAddress.Pack());
(int srcBaseOffset, int srcSize) = srcCalculator.GetRectangleRange(src.RegionX, src.RegionY, cbp.XCount, cbp.YCount);
(int dstBaseOffset, int dstSize) = dstCalculator.GetRectangleRange(dst.RegionX, dst.RegionY, cbp.XCount, cbp.YCount);
ReadOnlySpan<byte> srcSpan = _context.PhysicalMemory.GetSpan(srcBaseAddress + (ulong)srcBaseOffset, srcSize, true);
Span<byte> dstSpan = _context.PhysicalMemory.GetSpan(dstBaseAddress + (ulong)dstBaseOffset, dstSize).ToArray();
bool completeSource = IsTextureCopyComplete(cbp, src, srcLinear, cbp.SrcStride);
bool completeDest = IsTextureCopyComplete(cbp, dst, dstLinear, cbp.DstStride);
if (completeSource && completeDest)
{
Image.Texture target = TextureManager.FindTexture(dst, cbp, swizzle, dstLinear);
if (target != null)
{
ReadOnlySpan<byte> data;
if (srcLinear)
{
data = LayoutConverter.ConvertLinearStridedToLinear(
target.Info.Width,
target.Info.Height,
1,
1,
cbp.SrcStride,
target.Info.FormatInfo.BytesPerPixel,
srcSpan);
}
else
{
data = LayoutConverter.ConvertBlockLinearToLinear(
src.Width,
src.Height,
1,
target.Info.Levels,
1,
1,
1,
1,
src.MemoryLayout.UnpackGobBlocksInY(),
src.MemoryLayout.UnpackGobBlocksInZ(),
1,
new SizeInfo((int)target.Size),
srcSpan);
}
target.SetData(data);
target.SignalModified();
return;
}
else if (srcCalculator.LayoutMatches(dstCalculator))
{
srcSpan.CopyTo(dstSpan); // No layout conversion has to be performed, just copy the data entirely.
_context.PhysicalMemory.Write(dstBaseAddress + (ulong)dstBaseOffset, dstSpan);
return;
}
}
unsafe bool Convert<T>(Span<byte> dstSpan, ReadOnlySpan<byte> srcSpan) where T : unmanaged
{
fixed (byte* dstPtr = dstSpan, srcPtr = srcSpan)
{
byte* dstBase = dstPtr - dstBaseOffset; // Layout offset is relative to the base, so we need to subtract the span's offset.
byte* srcBase = srcPtr - srcBaseOffset;
for (int y = 0; y < cbp.YCount; y++)
{
srcCalculator.SetY(src.RegionY + y);
dstCalculator.SetY(dst.RegionY + y);
for (int x = 0; x < cbp.XCount; x++)
{
int srcOffset = srcCalculator.GetOffset(src.RegionX + x);
int dstOffset = dstCalculator.GetOffset(dst.RegionX + x);
*(T*)(dstBase + dstOffset) = *(T*)(srcBase + srcOffset);
}
}
}
return true;
}
Convert<byte>(dstSpan, srcSpan);
_context.PhysicalMemory.Write(dstBaseAddress + (ulong)dstBaseOffset, dstSpan);
}
else
{
// Buffer to buffer copy.
BufferManager.CopyBuffer(cbp.SrcAddress, cbp.DstAddress, (uint)size);
}
}
}
}