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Initial support for shader half float instructions (#507)

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gdkchan 2019-01-31 09:43:24 -03:00 • committed by GitHub
parent c81abdde4c
commit e10ff17e2d
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9 changed files with 244 additions and 65 deletions
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43
Ryujinx.Graphics/Gal/Shader/ShaderDecodeOpCode.cs
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@ -75,6 +75,49 @@ namespace Ryujinx.Graphics.Gal.Shader
return new ShaderIrOperGpr(OpCode.Read(28, 0xff));
}
private static ShaderIrOperGpr[] GprHalfVec8(this long OpCode)
{
return GetGprHalfVec2(OpCode.Read(8, 0xff), OpCode.Read(47, 3));
}
private static ShaderIrOperGpr[] GprHalfVec20(this long OpCode)
{
return GetGprHalfVec2(OpCode.Read(20, 0xff), OpCode.Read(28, 3));
}
private static ShaderIrOperGpr[] GetGprHalfVec2(int Gpr, int Mask)
{
if (Mask == 1)
{
//This value is used for FP32, the whole 32-bits register
//is used as each element on the vector.
return new ShaderIrOperGpr[]
{
new ShaderIrOperGpr(Gpr),
new ShaderIrOperGpr(Gpr)
};
}
ShaderIrOperGpr Low = new ShaderIrOperGpr(Gpr, 0);
ShaderIrOperGpr High = new ShaderIrOperGpr(Gpr, 1);
return new ShaderIrOperGpr[]
{
(Mask & 1) != 0 ? High : Low,
(Mask & 2) != 0 ? High : Low
};
}
private static ShaderIrOperGpr GprHalf0(this long OpCode, int HalfPart)
{
return new ShaderIrOperGpr(OpCode.Read(0, 0xff), HalfPart);
}
private static ShaderIrOperGpr GprHalf28(this long OpCode, int HalfPart)
{
return new ShaderIrOperGpr(OpCode.Read(28, 0xff), HalfPart);
}
private static ShaderIrOperImm Imm5_39(this long OpCode)
{
return new ShaderIrOperImm(OpCode.Read(39, 0x1f));