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Implement shader CC mode for ISCADD, X mode for ISETP and fix STL/STS/STG with RZ (#1901)

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* Implement shader CC mode for ISCADD, X mode for ISETP and fix STS/STG with RZ

* Fix STG too and bump shader cache version

* Fix wrong name

* Fix Carry being inverted on comparison
This commit is contained in:
gdkchan 2021-01-12 18:52:13 -03:00 committed by GitHub
parent df820a72de
commit 36c6e67df2
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 128 additions and 34 deletions
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2
Ryujinx.Graphics.Gpu/Shader/ShaderCache.cs
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@ -34,7 +34,7 @@ namespace Ryujinx.Graphics.Gpu.Shader
/// <summary>
/// Version of the codegen (to be changed when codegen or guest format change).
/// </summary>
private const ulong ShaderCodeGenVersion = 1878;
private const ulong ShaderCodeGenVersion = 1901;
/// <summary>
/// Creates a new instance of the shader cache.

112
Ryujinx.Graphics.Shader/Instructions/InstEmitAlu.cs
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@ -119,17 +119,12 @@ namespace Ryujinx.Graphics.Shader.Instructions
Operand res = context.IAdd(srcA, srcB);
bool isSubtraction = negateA || negateB;
if (op.Extended)
{
// Add carry, or subtract borrow.
res = context.IAdd(res, isSubtraction
? context.BitwiseNot(GetCF())
: context.BitwiseAnd(GetCF(), Const(1)));
res = context.IAdd(res, context.BitwiseAnd(GetCF(), Const(1)));
}
SetIaddFlags(context, res, srcA, srcB, op.SetCondCode, op.Extended, isSubtraction);
SetIaddFlags(context, res, srcA, srcB, op.SetCondCode, op.Extended);
context.Copy(GetDest(context), res);
}
@ -317,9 +312,9 @@ namespace Ryujinx.Graphics.Shader.Instructions
Operand res = context.IAdd(srcA, srcB);
context.Copy(GetDest(context), res);
SetIaddFlags(context, res, srcA, srcB, op.SetCondCode, false);
// TODO: CC, X
context.Copy(GetDest(context), res);
}
public static void Iset(EmitterContext context)
@ -334,7 +329,7 @@ namespace Ryujinx.Graphics.Shader.Instructions
Operand srcA = GetSrcA(context);
Operand srcB = GetSrcB(context);
Operand res = GetIntComparison(context, cmpOp, srcA, srcB, isSigned);
Operand res = GetIntComparison(context, cmpOp, srcA, srcB, isSigned, op.Extended);
Operand pred = GetPredicate39(context);
@ -356,8 +351,6 @@ namespace Ryujinx.Graphics.Shader.Instructions
SetZnFlags(context, res, op.SetCondCode, op.Extended);
}
// TODO: X
}
public static void Isetp(EmitterContext context)
@ -371,7 +364,7 @@ namespace Ryujinx.Graphics.Shader.Instructions
Operand srcA = GetSrcA(context);
Operand srcB = GetSrcB(context);
Operand p0Res = GetIntComparison(context, cmpOp, srcA, srcB, isSigned);
Operand p0Res = GetIntComparison(context, cmpOp, srcA, srcB, isSigned, op.Extended);
Operand p1Res = context.BitwiseNot(p0Res);
@ -799,6 +792,84 @@ namespace Ryujinx.Graphics.Shader.Instructions
context.Copy(GetDest(context), res);
}
private static Operand GetIntComparison(
EmitterContext context,
IntegerCondition 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,
IntegerCondition cond,
Operand srcA,
Operand srcB,
bool isSigned)
{
Operand res;
if (cond == IntegerCondition.Always)
{
res = Const(IrConsts.True);
}
else if (cond == IntegerCondition.Never)
{
res = Const(IrConsts.False);
}
else
{
res = context.ISubtract(srcA, srcB);
res = context.IAdd(res, context.BitwiseNot(GetCF()));
switch (cond)
{
case Decoders.IntegerCondition.Equal: // r = xh == yh && xl == yl
res = context.BitwiseAnd(context.ICompareEqual(srcA, srcB), GetZF());
break;
case Decoders.IntegerCondition.Less: // 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 Decoders.IntegerCondition.LessOrEqual: // 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 Decoders.IntegerCondition.Greater: // 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 Decoders.IntegerCondition.GreaterOrEqual: // 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 Decoders.IntegerCondition.NotEqual: // r = xh != yh || xl != yl
context.BitwiseOr(context.ICompareNotEqual(srcA, srcB), context.BitwiseNot(GetZF()));
break;
default:
throw new InvalidOperationException($"Unexpected condition \"{cond}\".");
}
}
return res;
}
private static Operand GetIntComparison(
EmitterContext context,
IntegerCondition cond,
@ -879,20 +950,14 @@ namespace Ryujinx.Graphics.Shader.Instructions
Operand srcA,
Operand srcB,
bool setCC,
bool extended,
bool isSubtraction = false)
bool extended)
{
if (!setCC)
{
return;
}
if (!extended || isSubtraction)
{
// C = d < a
context.Copy(GetCF(), context.ICompareLessUnsigned(res, srcA));
}
else
if (extended)
{
// C = (d == a && CIn) || d < a
Operand tempC0 = context.ICompareEqual (res, srcA);
@ -902,6 +967,11 @@ namespace Ryujinx.Graphics.Shader.Instructions
context.Copy(GetCF(), context.BitwiseOr(tempC0, tempC1));
}
else
{
// C = d < a
context.Copy(GetCF(), context.ICompareLessUnsigned(res, srcA));
}
// V = (d ^ a) & ~(a ^ b) < 0
Operand tempV0 = context.BitwiseExclusiveOr(res, srcA);

18
Ryujinx.Graphics.Shader/Instructions/InstEmitMemory.cs
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@ -501,7 +501,9 @@ namespace Ryujinx.Graphics.Shader.Instructions
for (int index = 0; index < count; index++)
{
Register rd = new Register(op.Rd.Index + index, RegisterType.Gpr);
bool isRz = op.Rd.IsRZ;
Register rd = new Register(isRz ? op.Rd.Index : op.Rd.Index + index, RegisterType.Gpr);
Operand value = Register(rd);
@ -525,11 +527,6 @@ namespace Ryujinx.Graphics.Shader.Instructions
case MemoryRegion.Local: context.StoreLocal (offset, value); break;
case MemoryRegion.Shared: context.StoreShared(offset, value); break;
}
if (rd.IsRZ)
{
break;
}
}
}
@ -547,7 +544,9 @@ namespace Ryujinx.Graphics.Shader.Instructions
for (int index = 0; index < count; index++)
{
Register rd = new Register(op.Rd.Index + index, RegisterType.Gpr);
bool isRz = op.Rd.IsRZ;
Register rd = new Register(isRz ? op.Rd.Index : op.Rd.Index + index, RegisterType.Gpr);
Operand value = Register(rd);
@ -559,11 +558,6 @@ namespace Ryujinx.Graphics.Shader.Instructions
}
context.StoreGlobal(context.IAdd(addrLow, Const(index * 4)), addrHigh, value);
if (rd.IsRZ)
{
break;
}
}
}

30
Ryujinx.Graphics.Shader/Translation/EmitterContextInsts.cs
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@ -406,11 +406,41 @@ namespace Ryujinx.Graphics.Shader.Translation
return context.Add(Instruction.CompareEqual, Local(), a, b);
}
public static Operand ICompareGreater(this EmitterContext context, Operand a, Operand b)
{
return context.Add(Instruction.CompareGreater, Local(), a, b);
}
public static Operand ICompareGreaterOrEqual(this EmitterContext context, Operand a, Operand b)
{
return context.Add(Instruction.CompareGreaterOrEqual, Local(), a, b);
}
public static Operand ICompareGreaterOrEqualUnsigned(this EmitterContext context, Operand a, Operand b)
{
return context.Add(Instruction.CompareGreaterOrEqualU32, Local(), a, b);
}
public static Operand ICompareGreaterUnsigned(this EmitterContext context, Operand a, Operand b)
{
return context.Add(Instruction.CompareGreaterU32, Local(), a, b);
}
public static Operand ICompareLess(this EmitterContext context, Operand a, Operand b)
{
return context.Add(Instruction.CompareLess, Local(), a, b);
}
public static Operand ICompareLessOrEqual(this EmitterContext context, Operand a, Operand b)
{
return context.Add(Instruction.CompareLessOrEqual, Local(), a, b);
}
public static Operand ICompareLessOrEqualUnsigned(this EmitterContext context, Operand a, Operand b)
{
return context.Add(Instruction.CompareLessOrEqualU32, Local(), a, b);
}
public static Operand ICompareLessUnsigned(this EmitterContext context, Operand a, Operand b)
{
return context.Add(Instruction.CompareLessU32, Local(), a, b);