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gdk 2019-10-13 03:02:07 -03:00 • committed by Thog
parent f617fb542a
commit 1876b346fe
518 changed files with 15170 additions and 12486 deletions
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58
Ryujinx.Graphics.Shader/Decoders/DecoderHelper.cs Normal file
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using System;
namespace Ryujinx.Graphics.Shader.Decoders
{
static class DecoderHelper
{
public static int DecodeS20Immediate(long opCode)
{
int imm = opCode.Extract(20, 19);
bool sign = opCode.Extract(56);
if (sign)
{
imm = (imm << 13) >> 13;
}
return imm;
}
public static int Decode2xF10Immediate(long opCode)
{
int immH0 = opCode.Extract(20, 9);
int immH1 = opCode.Extract(30, 9);
bool negateH0 = opCode.Extract(29);
bool negateH1 = opCode.Extract(56);
if (negateH0)
{
immH0 |= 1 << 9;
}
if (negateH1)
{
immH1 |= 1 << 9;
}
return immH1 << 22 | immH0 << 6;
}
public static float DecodeF20Immediate(long opCode)
{
int imm = opCode.Extract(20, 19);
bool negate = opCode.Extract(56);
imm <<= 12;
if (negate)
{
imm |= 1 << 31;
}
return BitConverter.Int32BitsToSingle(imm);
}
}
}