Ryujinx/Ryujinx.Graphics.Shader/Instructions/InstEmitTexture.cs

1026 lines
No EOL
31 KiB
C#

using Ryujinx.Graphics.Shader.Decoders;
using Ryujinx.Graphics.Shader.IntermediateRepresentation;
using Ryujinx.Graphics.Shader.Translation;
using System;
using System.Collections.Generic;
using static Ryujinx.Graphics.Shader.IntermediateRepresentation.OperandHelper;
namespace Ryujinx.Graphics.Shader.Instructions
{
static partial class InstEmit
{
public static void Sust(EmitterContext context)
{
OpCodeImage op = (OpCodeImage)context.CurrOp;
SamplerType type = ConvertSamplerType(op.Dimensions);
if (type == SamplerType.None)
{
// TODO: Error, encoding is invalid.
return;
}
int raIndex = op.Ra.Index;
int rbIndex = op.Rb.Index;
Operand Ra()
{
if (raIndex > RegisterConsts.RegisterZeroIndex)
{
return Const(0);
}
return context.Copy(Register(raIndex++, RegisterType.Gpr));
}
Operand Rb()
{
if (rbIndex > RegisterConsts.RegisterZeroIndex)
{
return Const(0);
}
return context.Copy(Register(rbIndex++, RegisterType.Gpr));
}
bool isArray = op.Dimensions == ImageDimensions.Image1DArray ||
op.Dimensions == ImageDimensions.Image2DArray;
Operand arrayIndex = isArray ? Ra() : null;
List<Operand> sourcesList = new List<Operand>();
if (op.IsBindless)
{
sourcesList.Add(context.Copy(Register(op.Rc)));
}
int coordsCount = type.GetDimensions();
for (int index = 0; index < coordsCount; index++)
{
sourcesList.Add(Ra());
}
if (isArray)
{
sourcesList.Add(arrayIndex);
type |= SamplerType.Array;
}
if (op.UseComponents)
{
int componentMask = (int)op.Components;
for (int compMask = componentMask, compIndex = 0; compMask != 0; compMask >>= 1, compIndex++)
{
if ((compMask & 1) != 0)
{
sourcesList.Add(Rb());
}
}
}
else
{
// TODO.
}
Operand[] sources = sourcesList.ToArray();
int handle = !op.IsBindless ? op.Immediate : 0;
TextureFlags flags = op.IsBindless ? TextureFlags.Bindless : TextureFlags.None;
TextureOperation operation = new TextureOperation(
Instruction.ImageStore,
type,
flags,
handle,
0,
null,
sources);
context.Add(operation);
}
public static void Tex(EmitterContext context)
{
EmitTextureSample(context, TextureFlags.None);
}
public static void TexB(EmitterContext context)
{
EmitTextureSample(context, TextureFlags.Bindless);
}
public static void Tld(EmitterContext context)
{
EmitTextureSample(context, TextureFlags.IntCoords);
}
public static void TldB(EmitterContext context)
{
EmitTextureSample(context, TextureFlags.IntCoords | TextureFlags.Bindless);
}
public static void Texs(EmitterContext context)
{
OpCodeTextureScalar op = (OpCodeTextureScalar)context.CurrOp;
if (op.Rd0.IsRZ && op.Rd1.IsRZ)
{
return;
}
List<Operand> sourcesList = new List<Operand>();
int raIndex = op.Ra.Index;
int rbIndex = op.Rb.Index;
Operand Ra()
{
if (raIndex > RegisterConsts.RegisterZeroIndex)
{
return Const(0);
}
return context.Copy(Register(raIndex++, RegisterType.Gpr));
}
Operand Rb()
{
if (rbIndex > RegisterConsts.RegisterZeroIndex)
{
return Const(0);
}
return context.Copy(Register(rbIndex++, RegisterType.Gpr));
}
void AddTextureOffset(int coordsCount, int stride, int size)
{
Operand packedOffs = Rb();
for (int index = 0; index < coordsCount; index++)
{
sourcesList.Add(context.BitfieldExtractS32(packedOffs, Const(index * stride), Const(size)));
}
}
SamplerType type;
TextureFlags flags;
if (op is OpCodeTexs texsOp)
{
type = ConvertSamplerType(texsOp.Target);
if (type == SamplerType.None)
{
// TODO: Error, encoding is invalid.
return;
}
flags = ConvertTextureFlags(texsOp.Target);
if ((type & SamplerType.Array) != 0)
{
Operand arrayIndex = Ra();
sourcesList.Add(Ra());
sourcesList.Add(Rb());
sourcesList.Add(arrayIndex);
if ((type & SamplerType.Shadow) != 0)
{
sourcesList.Add(Rb());
}
if ((flags & TextureFlags.LodLevel) != 0)
{
sourcesList.Add(ConstF(0));
}
}
else
{
switch (texsOp.Target)
{
case Decoders.TextureTarget.Texture1DLodZero:
sourcesList.Add(Ra());
break;
case Decoders.TextureTarget.Texture2D:
sourcesList.Add(Ra());
sourcesList.Add(Rb());
break;
case Decoders.TextureTarget.Texture2DLodZero:
sourcesList.Add(Ra());
sourcesList.Add(Rb());
sourcesList.Add(ConstF(0));
break;
case Decoders.TextureTarget.Texture2DLodLevel:
case Decoders.TextureTarget.Texture2DDepthCompare:
case Decoders.TextureTarget.Texture3D:
case Decoders.TextureTarget.TextureCube:
sourcesList.Add(Ra());
sourcesList.Add(Ra());
sourcesList.Add(Rb());
break;
case Decoders.TextureTarget.Texture2DLodZeroDepthCompare:
case Decoders.TextureTarget.Texture3DLodZero:
sourcesList.Add(Ra());
sourcesList.Add(Ra());
sourcesList.Add(Rb());
sourcesList.Add(ConstF(0));
break;
case Decoders.TextureTarget.Texture2DLodLevelDepthCompare:
case Decoders.TextureTarget.TextureCubeLodLevel:
sourcesList.Add(Ra());
sourcesList.Add(Ra());
sourcesList.Add(Rb());
sourcesList.Add(Rb());
break;
}
}
}
else if (op is OpCodeTlds tldsOp)
{
type = ConvertSamplerType (tldsOp.Target);
if (type == SamplerType.None)
{
// TODO: Error, encoding is invalid.
return;
}
flags = ConvertTextureFlags(tldsOp.Target) | TextureFlags.IntCoords;
switch (tldsOp.Target)
{
case TexelLoadTarget.Texture1DLodZero:
sourcesList.Add(Ra());
sourcesList.Add(Const(0));
break;
case TexelLoadTarget.Texture1DLodLevel:
sourcesList.Add(Ra());
sourcesList.Add(Rb());
break;
case TexelLoadTarget.Texture2DLodZero:
sourcesList.Add(Ra());
sourcesList.Add(Rb());
sourcesList.Add(Const(0));
break;
case TexelLoadTarget.Texture2DLodZeroOffset:
sourcesList.Add(Ra());
sourcesList.Add(Ra());
sourcesList.Add(Const(0));
break;
case TexelLoadTarget.Texture2DLodZeroMultisample:
case TexelLoadTarget.Texture2DLodLevel:
case TexelLoadTarget.Texture2DLodLevelOffset:
sourcesList.Add(Ra());
sourcesList.Add(Ra());
sourcesList.Add(Rb());
break;
case TexelLoadTarget.Texture3DLodZero:
sourcesList.Add(Ra());
sourcesList.Add(Ra());
sourcesList.Add(Rb());
sourcesList.Add(Const(0));
break;
case TexelLoadTarget.Texture2DArrayLodZero:
sourcesList.Add(Rb());
sourcesList.Add(Rb());
sourcesList.Add(Ra());
sourcesList.Add(Const(0));
break;
}
if ((flags & TextureFlags.Offset) != 0)
{
AddTextureOffset(type.GetDimensions(), 4, 4);
}
}
else if (op is OpCodeTld4s tld4sOp)
{
if (!(tld4sOp.HasDepthCompare || tld4sOp.HasOffset))
{
sourcesList.Add(Ra());
sourcesList.Add(Rb());
}
else
{
sourcesList.Add(Ra());
sourcesList.Add(Ra());
}
type = SamplerType.Texture2D;
flags = TextureFlags.Gather;
if (tld4sOp.HasDepthCompare)
{
sourcesList.Add(Rb());
type |= SamplerType.Shadow;
}
if (tld4sOp.HasOffset)
{
AddTextureOffset(type.GetDimensions(), 8, 6);
flags |= TextureFlags.Offset;
}
sourcesList.Add(Const(tld4sOp.GatherCompIndex));
}
else
{
throw new InvalidOperationException($"Invalid opcode type \"{op.GetType().Name}\".");
}
Operand[] sources = sourcesList.ToArray();
Operand[] rd0 = new Operand[2] { ConstF(0), ConstF(0) };
Operand[] rd1 = new Operand[2] { ConstF(0), ConstF(0) };
int destIncrement = 0;
Operand GetDest()
{
int high = destIncrement >> 1;
int low = destIncrement & 1;
destIncrement++;
if (op.IsFp16)
{
return high != 0
? (rd1[low] = Local())
: (rd0[low] = Local());
}
else
{
int rdIndex = high != 0 ? op.Rd1.Index : op.Rd0.Index;
if (rdIndex < RegisterConsts.RegisterZeroIndex)
{
rdIndex += low;
}
return Register(rdIndex, RegisterType.Gpr);
}
}
int handle = op.Immediate;
for (int compMask = op.ComponentMask, compIndex = 0; compMask != 0; compMask >>= 1, compIndex++)
{
if ((compMask & 1) != 0)
{
Operand dest = GetDest();
TextureOperation operation = new TextureOperation(
Instruction.TextureSample,
type,
flags,
handle,
compIndex,
dest,
sources);
context.Add(operation);
}
}
if (op.IsFp16)
{
context.Copy(Register(op.Rd0), context.PackHalf2x16(rd0[0], rd0[1]));
context.Copy(Register(op.Rd1), context.PackHalf2x16(rd1[0], rd1[1]));
}
}
public static void Tld4(EmitterContext context)
{
OpCodeTld4 op = (OpCodeTld4)context.CurrOp;
if (op.Rd.IsRZ)
{
return;
}
int raIndex = op.Ra.Index;
int rbIndex = op.Rb.Index;
Operand Ra()
{
if (raIndex > RegisterConsts.RegisterZeroIndex)
{
return Const(0);
}
return context.Copy(Register(raIndex++, RegisterType.Gpr));
}
Operand Rb()
{
if (rbIndex > RegisterConsts.RegisterZeroIndex)
{
return Const(0);
}
return context.Copy(Register(rbIndex++, RegisterType.Gpr));
}
Operand arrayIndex = op.IsArray ? Ra() : null;
List<Operand> sourcesList = new List<Operand>();
SamplerType type = ConvertSamplerType(op.Dimensions);
TextureFlags flags = TextureFlags.Gather;
int coordsCount = type.GetDimensions();
for (int index = 0; index < coordsCount; index++)
{
sourcesList.Add(Ra());
}
if (op.IsArray)
{
sourcesList.Add(arrayIndex);
type |= SamplerType.Array;
}
Operand[] packedOffs = new Operand[2];
packedOffs[0] = op.Offset != TextureGatherOffset.None ? Rb() : null;
packedOffs[1] = op.Offset == TextureGatherOffset.Offsets ? Rb() : null;
if (op.HasDepthCompare)
{
sourcesList.Add(Rb());
type |= SamplerType.Shadow;
}
if (op.Offset != TextureGatherOffset.None)
{
int offsetTexelsCount = op.Offset == TextureGatherOffset.Offsets ? 4 : 1;
for (int index = 0; index < coordsCount * offsetTexelsCount; index++)
{
Operand packed = packedOffs[(index >> 2) & 1];
sourcesList.Add(context.BitfieldExtractS32(packed, Const((index & 3) * 8), Const(6)));
}
flags |= op.Offset == TextureGatherOffset.Offsets
? TextureFlags.Offsets
: TextureFlags.Offset;
}
sourcesList.Add(Const(op.GatherCompIndex));
Operand[] sources = sourcesList.ToArray();
int rdIndex = op.Rd.Index;
Operand GetDest()
{
if (rdIndex > RegisterConsts.RegisterZeroIndex)
{
return Const(0);
}
return Register(rdIndex++, RegisterType.Gpr);
}
int handle = op.Immediate;
for (int compMask = op.ComponentMask, compIndex = 0; compMask != 0; compMask >>= 1, compIndex++)
{
if ((compMask & 1) != 0)
{
Operand dest = GetDest();
TextureOperation operation = new TextureOperation(
Instruction.TextureSample,
type,
flags,
handle,
compIndex,
dest,
sources);
context.Add(operation);
}
}
}
public static void Txd(EmitterContext context)
{
OpCodeTxd op = (OpCodeTxd)context.CurrOp;
if (op.Rd.IsRZ)
{
return;
}
int raIndex = op.Ra.Index;
int rbIndex = op.Rb.Index;
Operand Ra()
{
if (raIndex > RegisterConsts.RegisterZeroIndex)
{
return Const(0);
}
return context.Copy(Register(raIndex++, RegisterType.Gpr));
}
Operand Rb()
{
if (rbIndex > RegisterConsts.RegisterZeroIndex)
{
return Const(0);
}
return context.Copy(Register(rbIndex++, RegisterType.Gpr));
}
TextureFlags flags = TextureFlags.Derivatives;
List<Operand> sourcesList = new List<Operand>();
if (op.IsBindless)
{
sourcesList.Add(Ra());
}
SamplerType type = ConvertSamplerType(op.Dimensions);
int coordsCount = type.GetDimensions();
for (int index = 0; index < coordsCount; index++)
{
sourcesList.Add(Ra());
}
Operand packedParams = Ra();
if (op.IsArray)
{
sourcesList.Add(context.BitwiseAnd(packedParams, Const(0xffff)));
type |= SamplerType.Array;
}
// Derivatives (X and Y).
for (int dIndex = 0; dIndex < 2 * coordsCount; dIndex++)
{
sourcesList.Add(Rb());
}
if (op.HasOffset)
{
for (int index = 0; index < coordsCount; index++)
{
sourcesList.Add(context.BitfieldExtractS32(packedParams, Const(16 + index * 4), Const(4)));
}
flags |= TextureFlags.Offset;
}
Operand[] sources = sourcesList.ToArray();
int rdIndex = op.Rd.Index;
Operand GetDest()
{
if (rdIndex > RegisterConsts.RegisterZeroIndex)
{
return Const(0);
}
return Register(rdIndex++, RegisterType.Gpr);
}
int handle = !op.IsBindless ? op.Immediate : 0;
for (int compMask = op.ComponentMask, compIndex = 0; compMask != 0; compMask >>= 1, compIndex++)
{
if ((compMask & 1) != 0)
{
Operand dest = GetDest();
TextureOperation operation = new TextureOperation(
Instruction.TextureSample,
type,
flags,
handle,
compIndex,
dest,
sources);
context.Add(operation);
}
}
}
public static void Txq(EmitterContext context)
{
EmitTextureQuery(context, bindless: false);
}
public static void TxqB(EmitterContext context)
{
EmitTextureQuery(context, bindless: true);
}
private static void EmitTextureQuery(EmitterContext context, bool bindless)
{
OpCodeTex op = (OpCodeTex)context.CurrOp;
if (op.Rd.IsRZ)
{
return;
}
TextureProperty property = (TextureProperty)op.RawOpCode.Extract(22, 6);
// TODO: Validate and use property.
Instruction inst = Instruction.TextureSize;
SamplerType type = SamplerType.Texture2D;
TextureFlags flags = bindless ? TextureFlags.Bindless : TextureFlags.None;
int raIndex = op.Ra.Index;
Operand Ra()
{
if (raIndex > RegisterConsts.RegisterZeroIndex)
{
return Const(0);
}
return context.Copy(Register(raIndex++, RegisterType.Gpr));
}
List<Operand> sourcesList = new List<Operand>();
if (bindless)
{
sourcesList.Add(Ra());
}
sourcesList.Add(Ra());
Operand[] sources = sourcesList.ToArray();
int rdIndex = op.Rd.Index;
Operand GetDest()
{
if (rdIndex > RegisterConsts.RegisterZeroIndex)
{
return Const(0);
}
return Register(rdIndex++, RegisterType.Gpr);
}
int handle = !bindless ? op.Immediate : 0;
for (int compMask = op.ComponentMask, compIndex = 0; compMask != 0; compMask >>= 1, compIndex++)
{
if ((compMask & 1) != 0)
{
Operand dest = GetDest();
TextureOperation operation = new TextureOperation(
inst,
type,
flags,
handle,
compIndex,
dest,
sources);
context.Add(operation);
}
}
}
private static void EmitTextureSample(EmitterContext context, TextureFlags flags)
{
OpCodeTexture op = (OpCodeTexture)context.CurrOp;
bool isBindless = (flags & TextureFlags.Bindless) != 0;
bool intCoords = (flags & TextureFlags.IntCoords) != 0;
if (op.Rd.IsRZ)
{
return;
}
int raIndex = op.Ra.Index;
int rbIndex = op.Rb.Index;
Operand Ra()
{
if (raIndex > RegisterConsts.RegisterZeroIndex)
{
return Const(0);
}
return context.Copy(Register(raIndex++, RegisterType.Gpr));
}
Operand Rb()
{
if (rbIndex > RegisterConsts.RegisterZeroIndex)
{
return Const(0);
}
return context.Copy(Register(rbIndex++, RegisterType.Gpr));
}
Operand arrayIndex = op.IsArray ? Ra() : null;
List<Operand> sourcesList = new List<Operand>();
if (isBindless)
{
sourcesList.Add(Rb());
}
SamplerType type = ConvertSamplerType(op.Dimensions);
int coordsCount = type.GetDimensions();
for (int index = 0; index < coordsCount; index++)
{
sourcesList.Add(Ra());
}
if (op.IsArray)
{
sourcesList.Add(arrayIndex);
type |= SamplerType.Array;
}
bool hasLod = op.LodMode > TextureLodMode.LodZero;
Operand lodValue = hasLod ? Rb() : ConstF(0);
Operand packedOffs = op.HasOffset ? Rb() : null;
if (op.HasDepthCompare)
{
sourcesList.Add(Rb());
type |= SamplerType.Shadow;
}
if ((op.LodMode == TextureLodMode.LodZero ||
op.LodMode == TextureLodMode.LodLevel ||
op.LodMode == TextureLodMode.LodLevelA) && !op.IsMultisample)
{
sourcesList.Add(lodValue);
flags |= TextureFlags.LodLevel;
}
if (op.HasOffset)
{
for (int index = 0; index < coordsCount; index++)
{
sourcesList.Add(context.BitfieldExtractS32(packedOffs, Const(index * 4), Const(4)));
}
flags |= TextureFlags.Offset;
}
if (op.LodMode == TextureLodMode.LodBias ||
op.LodMode == TextureLodMode.LodBiasA)
{
sourcesList.Add(lodValue);
flags |= TextureFlags.LodBias;
}
if (op.IsMultisample)
{
sourcesList.Add(Rb());
type |= SamplerType.Multisample;
}
Operand[] sources = sourcesList.ToArray();
int rdIndex = op.Rd.Index;
Operand GetDest()
{
if (rdIndex > RegisterConsts.RegisterZeroIndex)
{
return Const(0);
}
return Register(rdIndex++, RegisterType.Gpr);
}
int handle = !isBindless ? op.Immediate : 0;
for (int compMask = op.ComponentMask, compIndex = 0; compMask != 0; compMask >>= 1, compIndex++)
{
if ((compMask & 1) != 0)
{
Operand dest = GetDest();
TextureOperation operation = new TextureOperation(
Instruction.TextureSample,
type,
flags,
handle,
compIndex,
dest,
sources);
context.Add(operation);
}
}
}
private static SamplerType ConvertSamplerType(ImageDimensions target)
{
switch (target)
{
case ImageDimensions.Image1D:
return SamplerType.Texture1D;
case ImageDimensions.ImageBuffer:
return SamplerType.TextureBuffer;
case ImageDimensions.Image1DArray:
return SamplerType.Texture1D | SamplerType.Array;
case ImageDimensions.Image2D:
return SamplerType.Texture2D;
case ImageDimensions.Image2DArray:
return SamplerType.Texture2D | SamplerType.Array;
case ImageDimensions.Image3D:
return SamplerType.Texture3D;
}
return SamplerType.None;
}
private static SamplerType ConvertSamplerType(TextureDimensions dimensions)
{
switch (dimensions)
{
case TextureDimensions.Texture1D: return SamplerType.Texture1D;
case TextureDimensions.Texture2D: return SamplerType.Texture2D;
case TextureDimensions.Texture3D: return SamplerType.Texture3D;
case TextureDimensions.TextureCube: return SamplerType.TextureCube;
}
throw new ArgumentException($"Invalid texture dimensions \"{dimensions}\".");
}
private static SamplerType ConvertSamplerType(Decoders.TextureTarget type)
{
switch (type)
{
case Decoders.TextureTarget.Texture1DLodZero:
return SamplerType.Texture1D;
case Decoders.TextureTarget.Texture2D:
case Decoders.TextureTarget.Texture2DLodZero:
case Decoders.TextureTarget.Texture2DLodLevel:
return SamplerType.Texture2D;
case Decoders.TextureTarget.Texture2DDepthCompare:
case Decoders.TextureTarget.Texture2DLodLevelDepthCompare:
case Decoders.TextureTarget.Texture2DLodZeroDepthCompare:
return SamplerType.Texture2D | SamplerType.Shadow;
case Decoders.TextureTarget.Texture2DArray:
case Decoders.TextureTarget.Texture2DArrayLodZero:
return SamplerType.Texture2D | SamplerType.Array;
case Decoders.TextureTarget.Texture2DArrayLodZeroDepthCompare:
return SamplerType.Texture2D | SamplerType.Array | SamplerType.Shadow;
case Decoders.TextureTarget.Texture3D:
case Decoders.TextureTarget.Texture3DLodZero:
return SamplerType.Texture3D;
case Decoders.TextureTarget.TextureCube:
case Decoders.TextureTarget.TextureCubeLodLevel:
return SamplerType.TextureCube;
}
return SamplerType.None;
}
private static SamplerType ConvertSamplerType(TexelLoadTarget type)
{
switch (type)
{
case TexelLoadTarget.Texture1DLodZero:
case TexelLoadTarget.Texture1DLodLevel:
return SamplerType.Texture1D;
case TexelLoadTarget.Texture2DLodZero:
case TexelLoadTarget.Texture2DLodZeroOffset:
case TexelLoadTarget.Texture2DLodLevel:
case TexelLoadTarget.Texture2DLodLevelOffset:
return SamplerType.Texture2D;
case TexelLoadTarget.Texture2DLodZeroMultisample:
return SamplerType.Texture2D | SamplerType.Multisample;
case TexelLoadTarget.Texture3DLodZero:
return SamplerType.Texture3D;
case TexelLoadTarget.Texture2DArrayLodZero:
return SamplerType.Texture2D | SamplerType.Array;
}
return SamplerType.None;
}
private static TextureFlags ConvertTextureFlags(Decoders.TextureTarget type)
{
switch (type)
{
case Decoders.TextureTarget.Texture1DLodZero:
case Decoders.TextureTarget.Texture2DLodZero:
case Decoders.TextureTarget.Texture2DLodLevel:
case Decoders.TextureTarget.Texture2DLodLevelDepthCompare:
case Decoders.TextureTarget.Texture2DLodZeroDepthCompare:
case Decoders.TextureTarget.Texture2DArrayLodZero:
case Decoders.TextureTarget.Texture2DArrayLodZeroDepthCompare:
case Decoders.TextureTarget.Texture3DLodZero:
case Decoders.TextureTarget.TextureCubeLodLevel:
return TextureFlags.LodLevel;
case Decoders.TextureTarget.Texture2D:
case Decoders.TextureTarget.Texture2DDepthCompare:
case Decoders.TextureTarget.Texture2DArray:
case Decoders.TextureTarget.Texture3D:
case Decoders.TextureTarget.TextureCube:
return TextureFlags.None;
}
return TextureFlags.None;
}
private static TextureFlags ConvertTextureFlags(TexelLoadTarget type)
{
switch (type)
{
case TexelLoadTarget.Texture1DLodZero:
case TexelLoadTarget.Texture1DLodLevel:
case TexelLoadTarget.Texture2DLodZero:
case TexelLoadTarget.Texture2DLodLevel:
case TexelLoadTarget.Texture2DLodZeroMultisample:
case TexelLoadTarget.Texture3DLodZero:
case TexelLoadTarget.Texture2DArrayLodZero:
return TextureFlags.LodLevel;
case TexelLoadTarget.Texture2DLodZeroOffset:
case TexelLoadTarget.Texture2DLodLevelOffset:
return TextureFlags.LodLevel | TextureFlags.Offset;
}
return TextureFlags.None;
}
}
}