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using Ryujinx.Graphics.Shader.Decoders;
using Ryujinx.Graphics.Shader.IntermediateRepresentation;
using Ryujinx.Graphics.Shader.Translation;
using System;
using static Ryujinx.Graphics.Shader.Instructions.InstEmitAluHelper;
using static Ryujinx.Graphics.Shader.Instructions.InstEmitHelper;
using static Ryujinx.Graphics.Shader.IntermediateRepresentation.OperandHelper;
namespace Ryujinx.Graphics.Shader.Instructions
{
static partial class InstEmit
{
public static void IcmpR(EmitterContext context)
{
InstIcmpR op = context.GetOp<InstIcmpR>();
var srcA = GetSrcReg(context, op.SrcA);
var srcB = GetSrcReg(context, op.SrcB);
var srcC = GetSrcReg(context, op.SrcC);
EmitIcmp(context, op.IComp, srcA, srcB, srcC, op.Dest, op.Signed);
}
public static void IcmpI(EmitterContext context)
{
InstIcmpI op = context.GetOp<InstIcmpI>();
var srcA = GetSrcReg(context, op.SrcA);
var srcB = GetSrcImm(context, Imm20ToSInt(op.Imm20));
var srcC = GetSrcReg(context, op.SrcC);
EmitIcmp(context, op.IComp, srcA, srcB, srcC, op.Dest, op.Signed);
}
public static void IcmpC(EmitterContext context)
{
InstIcmpC op = context.GetOp<InstIcmpC>();
var srcA = GetSrcReg(context, op.SrcA);
var srcB = GetSrcCbuf(context, op.CbufSlot, op.CbufOffset);
var srcC = GetSrcReg(context, op.SrcC);
EmitIcmp(context, op.IComp, srcA, srcB, srcC, op.Dest, op.Signed);
}
public static void IcmpRc(EmitterContext context)
{
InstIcmpRc op = context.GetOp<InstIcmpRc>();
var srcA = GetSrcReg(context, op.SrcA);
var srcB = GetSrcReg(context, op.SrcC);
var srcC = GetSrcCbuf(context, op.CbufSlot, op.CbufOffset);
EmitIcmp(context, op.IComp, srcA, srcB, srcC, op.Dest, op.Signed);
}
public static void IsetR(EmitterContext context)
{
InstIsetR op = context.GetOp<InstIsetR>();
var srcA = GetSrcReg(context, op.SrcA);
var srcB = GetSrcReg(context, op.SrcB);
EmitIset(context, op.IComp, op.Bop, srcA, srcB, op.SrcPred, op.SrcPredInv, op.Dest, op.BVal, op.Signed, op.X, op.WriteCC);
}
public static void IsetI(EmitterContext context)
{
InstIsetI op = context.GetOp<InstIsetI>();
var srcA = GetSrcReg(context, op.SrcA);
var srcB = GetSrcImm(context, Imm20ToSInt(op.Imm20));
EmitIset(context, op.IComp, op.Bop, srcA, srcB, op.SrcPred, op.SrcPredInv, op.Dest, op.BVal, op.Signed, op.X, op.WriteCC);
}
public static void IsetC(EmitterContext context)
{
InstIsetC op = context.GetOp<InstIsetC>();
var srcA = GetSrcReg(context, op.SrcA);
var srcB = GetSrcCbuf(context, op.CbufSlot, op.CbufOffset);
EmitIset(context, op.IComp, op.Bop, srcA, srcB, op.SrcPred, op.SrcPredInv, op.Dest, op.BVal, op.Signed, op.X, op.WriteCC);
}
public static void IsetpR(EmitterContext context)
{
InstIsetpR op = context.GetOp<InstIsetpR>();
var srcA = GetSrcReg(context, op.SrcA);
var srcB = GetSrcReg(context, op.SrcB);
EmitIsetp(context, op.IComp, op.Bop, srcA, srcB, op.SrcPred, op.SrcPredInv, op.DestPred, op.DestPredInv, op.Signed, op.X);
}
public static void IsetpI(EmitterContext context)
{
InstIsetpI op = context.GetOp<InstIsetpI>();
var srcA = GetSrcReg(context, op.SrcA);
var srcB = GetSrcImm(context, Imm20ToSInt(op.Imm20));
EmitIsetp(context, op.IComp, op.Bop, srcA, srcB, op.SrcPred, op.SrcPredInv, op.DestPred, op.DestPredInv, op.Signed, op.X);
}
public static void IsetpC(EmitterContext context)
{
InstIsetpC op = context.GetOp<InstIsetpC>();
var srcA = GetSrcReg(context, op.SrcA);
var srcB = GetSrcCbuf(context, op.CbufSlot, op.CbufOffset);
EmitIsetp(context, op.IComp, op.Bop, srcA, srcB, op.SrcPred, op.SrcPredInv, op.DestPred, op.DestPredInv, op.Signed, op.X);
}
private static void EmitIcmp(
EmitterContext context,
IComp cmpOp,
Operand srcA,
Operand srcB,
Operand srcC,
int rd,
bool isSigned)
{
Operand cmpRes = GetIntComparison(context, cmpOp, srcC, Const(0), isSigned);
Operand res = context.ConditionalSelect(cmpRes, srcA, srcB);
context.Copy(GetDest(rd), res);
}
private static void EmitIset(
EmitterContext context,
IComp cmpOp,
BoolOp logicOp,
Operand srcA,
Operand srcB,
int srcPred,
bool srcPredInv,
int rd,
bool boolFloat,
bool isSigned,
bool extended,
bool writeCC)
{
Operand res = GetIntComparison(context, cmpOp, srcA, srcB, isSigned, extended);
Operand pred = GetPredicate(context, srcPred, srcPredInv);
res = GetPredLogicalOp(context, logicOp, res, pred);
Operand dest = GetDest(rd);
if (boolFloat)
{
res = context.ConditionalSelect(res, ConstF(1), Const(0));
context.Copy(dest, res);
SetFPZnFlags(context, res, writeCC);
}
else
{
context.Copy(dest, res);
SetZnFlags(context, res, writeCC, extended);
}
}
private static void EmitIsetp(
EmitterContext context,
IComp cmpOp,
BoolOp logicOp,
Operand srcA,
Operand srcB,
int srcPred,
bool srcPredInv,
int destPred,
int destPredInv,
bool isSigned,
bool extended)
{
Operand p0Res = GetIntComparison(context, cmpOp, srcA, srcB, isSigned, extended);
Operand p1Res = context.BitwiseNot(p0Res);
Operand pred = GetPredicate(context, srcPred, srcPredInv);
p0Res = GetPredLogicalOp(context, logicOp, p0Res, pred);
p1Res = GetPredLogicalOp(context, logicOp, p1Res, pred);
context.Copy(Register(destPred, RegisterType.Predicate), p0Res);
context.Copy(Register(destPredInv, RegisterType.Predicate), p1Res);
}
private static Operand GetIntComparison(
EmitterContext context,
IComp cond,
Operand srcA,
Operand srcB,
bool isSigned,
bool extended)
{
return extended
? GetIntComparisonExtended(context, cond, srcA, srcB, isSigned)
: GetIntComparison(context, cond, srcA, srcB, isSigned);
}
private static Operand GetIntComparisonExtended(EmitterContext context, IComp cond, Operand srcA, Operand srcB, bool isSigned)
{
Operand res;
if (cond == IComp.T)
{
res = Const(IrConsts.True);
}
else if (cond == IComp.F)
{
res = Const(IrConsts.False);
}
else
{
res = context.ISubtract(srcA, srcB);
#pragma warning disable IDE0059 // Remove unnecessary value assignment
res = context.IAdd(res, context.BitwiseNot(GetCF()));
#pragma warning restore IDE0059
switch (cond)
{
case IComp.Eq: // r = xh == yh && xl == yl
res = context.BitwiseAnd(context.ICompareEqual(srcA, srcB), GetZF());
break;
case IComp.Lt: // r = xh < yh || (xh == yh && xl < yl)
Operand notC = context.BitwiseNot(GetCF());
Operand prevLt = context.BitwiseAnd(context.ICompareEqual(srcA, srcB), notC);
res = isSigned
? context.BitwiseOr(context.ICompareLess(srcA, srcB), prevLt)
: context.BitwiseOr(context.ICompareLessUnsigned(srcA, srcB), prevLt);
break;
case IComp.Le: // r = xh < yh || (xh == yh && xl <= yl)
Operand zOrNotC = context.BitwiseOr(GetZF(), context.BitwiseNot(GetCF()));
Operand prevLe = context.BitwiseAnd(context.ICompareEqual(srcA, srcB), zOrNotC);
res = isSigned
? context.BitwiseOr(context.ICompareLess(srcA, srcB), prevLe)
: context.BitwiseOr(context.ICompareLessUnsigned(srcA, srcB), prevLe);
break;
case IComp.Gt: // r = xh > yh || (xh == yh && xl > yl)
Operand notZAndC = context.BitwiseAnd(context.BitwiseNot(GetZF()), GetCF());
Operand prevGt = context.BitwiseAnd(context.ICompareEqual(srcA, srcB), notZAndC);
res = isSigned
? context.BitwiseOr(context.ICompareGreater(srcA, srcB), prevGt)
: context.BitwiseOr(context.ICompareGreaterUnsigned(srcA, srcB), prevGt);
break;
case IComp.Ge: // r = xh > yh || (xh == yh && xl >= yl)
Operand prevGe = context.BitwiseAnd(context.ICompareEqual(srcA, srcB), GetCF());
res = isSigned
? context.BitwiseOr(context.ICompareGreater(srcA, srcB), prevGe)
: context.BitwiseOr(context.ICompareGreaterUnsigned(srcA, srcB), prevGe);
break;
case IComp.Ne: // r = xh != yh || xl != yl
res = context.BitwiseOr(context.ICompareNotEqual(srcA, srcB), context.BitwiseNot(GetZF()));
break;
default:
throw new ArgumentException($"Unexpected condition \"{cond}\".");
}
}
return res;
}
private static Operand GetIntComparison(EmitterContext context, IComp cond, Operand srcA, Operand srcB, bool isSigned)
{
Operand res;
if (cond == IComp.T)
{
res = Const(IrConsts.True);
}
else if (cond == IComp.F)
{
res = Const(IrConsts.False);
}
else
{
var inst = cond switch
{
IComp.Lt => Instruction.CompareLessU32,
IComp.Eq => Instruction.CompareEqual,
IComp.Le => Instruction.CompareLessOrEqualU32,
IComp.Gt => Instruction.CompareGreaterU32,
IComp.Ne => Instruction.CompareNotEqual,
IComp.Ge => Instruction.CompareGreaterOrEqualU32,
_ => throw new InvalidOperationException($"Unexpected condition \"{cond}\"."),
};
if (isSigned)
{
switch (cond)
{
case IComp.Lt:
inst = Instruction.CompareLess;
break;
case IComp.Le:
inst = Instruction.CompareLessOrEqual;
break;
case IComp.Gt:
inst = Instruction.CompareGreater;
break;
case IComp.Ge:
inst = Instruction.CompareGreaterOrEqual;
break;
}
}
res = context.Add(inst, Local(), srcA, srcB);
}
return res;
}
}
}
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