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Remove Half Conversion (#4106)

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* Remove HalfConversion

* Update `CodeGenVersion`
This commit is contained in:
Isaac Marovitz 2022-12-14 19:13:23 -05:00 committed by GitHub
parent 0f50de72be
commit 8ac53c66b4
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 2 additions and 49 deletions
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2
Ryujinx.Graphics.Gpu/Shader/DiskCache/DiskCacheHostStorage.cs
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@ -22,7 +22,7 @@ namespace Ryujinx.Graphics.Gpu.Shader.DiskCache
private const ushort FileFormatVersionMajor = 1;
private const ushort FileFormatVersionMinor = 2;
private const uint FileFormatVersionPacked = ((uint)FileFormatVersionMajor << 16) | FileFormatVersionMinor;
private const uint CodeGenVersion = 4069;
private const uint CodeGenVersion = 4106;
private const string SharedTocFileName = "shared.toc";
private const string SharedDataFileName = "shared.data";

2
Ryujinx.Graphics.Shader/Translation/Optimizations/ConstantFolding.cs
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@ -262,7 +262,7 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
value = (value >> operation.Index * 16) & 0xffff;
operation.TurnIntoCopy(ConstF(HalfConversion.HalfToSingle(value)));
operation.TurnIntoCopy(ConstF((float)BitConverter.UInt16BitsToHalf((ushort)value)));
}
private static void FPNegate(Operation operation)

47
Ryujinx.Graphics.Shader/Translation/Optimizations/HalfConversion.cs
View file

@ -1,47 +0,0 @@
using System;
namespace Ryujinx.Graphics.Shader.Translation.Optimizations
{
static class HalfConversion
{
public static float HalfToSingle(int value)
{
int mantissa = (value >> 0) & 0x3ff;
int exponent = (value >> 10) & 0x1f;
int sign = (value >> 15) & 0x1;
if (exponent == 0x1f)
{
// NaN or Infinity.
mantissa <<= 13;
exponent = 0xff;
}
else if (exponent != 0 || mantissa != 0 )
{
if (exponent == 0)
{
// Denormal.
int e = -1;
int m = mantissa;
do
{
e++;
m <<= 1;
}
while ((m & 0x400) == 0);
mantissa = m & 0x3ff;
exponent = e;
}
mantissa <<= 13;
exponent = 127 - 15 + exponent;
}
int output = (sign << 31) | (exponent << 23) | mantissa;
return BitConverter.Int32BitsToSingle(output);
}
}
}