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