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Initial support for double precision shader instructions. (#963)

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* Implement DADD, DFMA and DMUL shader instructions

* Rename FP to FP32

* Correct double immediate

* Classic mistake
This commit is contained in:
gdkchan 2020-03-03 11:02:08 -03:00 • committed by GitHub
parent 3045c1a186
commit dc97457bf0
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GPG key ID: 4AEE18F83AFDEB23
19 changed files with 428 additions and 184 deletions
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33
Ryujinx.Graphics.Shader/Instructions/InstEmitConversion.cs
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@ -21,31 +21,43 @@ namespace Ryujinx.Graphics.Shader.Instructions
bool negateB = op.RawOpCode.Extract(45);
bool absoluteB = op.RawOpCode.Extract(49);
Operand srcB = context.FPAbsNeg(GetSrcB(context, srcType), absoluteB, negateB);
Operand srcB = context.FPAbsNeg(GetSrcB(context, srcType), absoluteB, negateB, srcType.ToInstFPType());
if (round)
if (round && srcType == dstType)
{
switch (op.RoundingMode)
{
case RoundingMode.ToNearest:
srcB = context.FPRound(srcB);
srcB = context.FPRound(srcB, srcType.ToInstFPType());
break;
case RoundingMode.TowardsNegativeInfinity:
srcB = context.FPFloor(srcB);
srcB = context.FPFloor(srcB, srcType.ToInstFPType());
break;
case RoundingMode.TowardsPositiveInfinity:
srcB = context.FPCeiling(srcB);
srcB = context.FPCeiling(srcB, srcType.ToInstFPType());
break;
case RoundingMode.TowardsZero:
srcB = context.FPTruncate(srcB);
srcB = context.FPTruncate(srcB, srcType.ToInstFPType());
break;
}
}
srcB = context.FPSaturate(srcB, op.Saturate);
// We don't need to handle conversions between FP16 <-> FP32
// since we do FP16 operations as FP32 directly.
// FP16 <-> FP64 conversions are invalid.
if (srcType == FPType.FP32 && dstType == FPType.FP64)
{
srcB = context.FP32ConvertToFP64(srcB);
}
else if (srcType == FPType.FP64 && dstType == FPType.FP32)
{
srcB = context.FP64ConvertToFP32(srcB);
}
srcB = context.FPSaturate(srcB, op.Saturate, dstType.ToInstFPType());
WriteFP(context, dstType, srcB);
@ -229,9 +241,12 @@ namespace Ryujinx.Graphics.Shader.Instructions
{
context.Copy(dest, context.PackHalf2x16(srcB, ConstF(0)));
}
else
else /* if (type == FPType.FP64) */
{
// TODO.
Operand dest2 = GetDest2(context);
context.Copy(dest, context.UnpackDouble2x32Low(srcB));
context.Copy(dest2, context.UnpackDouble2x32High(srcB));
}
}
}