ryujinx/Ryujinx.Graphics.Shader/Instructions/InstEmitIntegerMinMax.cs
gdkchan a7109c767b
Rewrite shader decoding stage (#2698)
* Rewrite shader decoding stage

* Fix P2R constant buffer encoding

* Fix PSET/PSETP

* PR feedback

* Log unimplemented shader instructions

* Implement NOP

* Remove using

* PR feedback
2021-10-12 22:35:31 +02:00

71 lines
2.3 KiB
C#

using Ryujinx.Graphics.Shader.Decoders;
using Ryujinx.Graphics.Shader.IntermediateRepresentation;
using Ryujinx.Graphics.Shader.Translation;
using static Ryujinx.Graphics.Shader.Instructions.InstEmitAluHelper;
using static Ryujinx.Graphics.Shader.Instructions.InstEmitHelper;
namespace Ryujinx.Graphics.Shader.Instructions
{
static partial class InstEmit
{
public static void ImnmxR(EmitterContext context)
{
InstImnmxR op = context.GetOp<InstImnmxR>();
var srcA = GetSrcReg(context, op.SrcA);
var srcB = GetSrcReg(context, op.SrcB);
var srcPred = GetPredicate(context, op.SrcPred, op.SrcPredInv);
EmitImnmx(context, srcA, srcB, srcPred, op.Dest, op.Signed, op.WriteCC);
}
public static void ImnmxI(EmitterContext context)
{
InstImnmxI op = context.GetOp<InstImnmxI>();
var srcA = GetSrcReg(context, op.SrcA);
var srcB = GetSrcImm(context, Imm20ToSInt(op.Imm20));
var srcPred = GetPredicate(context, op.SrcPred, op.SrcPredInv);
EmitImnmx(context, srcA, srcB, srcPred, op.Dest, op.Signed, op.WriteCC);
}
public static void ImnmxC(EmitterContext context)
{
InstImnmxC op = context.GetOp<InstImnmxC>();
var srcA = GetSrcReg(context, op.SrcA);
var srcB = GetSrcCbuf(context, op.CbufSlot, op.CbufOffset);
var srcPred = GetPredicate(context, op.SrcPred, op.SrcPredInv);
EmitImnmx(context, srcA, srcB, srcPred, op.Dest, op.Signed, op.WriteCC);
}
private static void EmitImnmx(
EmitterContext context,
Operand srcA,
Operand srcB,
Operand srcPred,
int rd,
bool isSignedInt,
bool writeCC)
{
Operand resMin = isSignedInt
? context.IMinimumS32(srcA, srcB)
: context.IMinimumU32(srcA, srcB);
Operand resMax = isSignedInt
? context.IMaximumS32(srcA, srcB)
: context.IMaximumU32(srcA, srcB);
Operand res = context.ConditionalSelect(srcPred, resMin, resMax);
context.Copy(GetDest(rd), res);
SetZnFlags(context, res, writeCC);
// TODO: X flags.
}
}
}