58 lines
1.2 KiB
C#
58 lines
1.2 KiB
C#
using System;
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namespace Ryujinx.Graphics.Shader.Decoders
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{
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static class DecoderHelper
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{
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public static int DecodeS20Immediate(long opCode)
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{
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int imm = opCode.Extract(20, 19);
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bool sign = opCode.Extract(56);
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if (sign)
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{
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imm = (imm << 13) >> 13;
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}
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return imm;
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}
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public static int Decode2xF10Immediate(long opCode)
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{
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int immH0 = opCode.Extract(20, 9);
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int immH1 = opCode.Extract(30, 9);
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bool negateH0 = opCode.Extract(29);
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bool negateH1 = opCode.Extract(56);
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if (negateH0)
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{
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immH0 |= 1 << 9;
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}
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if (negateH1)
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{
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immH1 |= 1 << 9;
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}
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return immH1 << 22 | immH0 << 6;
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}
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public static float DecodeF20Immediate(long opCode)
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{
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int imm = opCode.Extract(20, 19);
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bool negate = opCode.Extract(56);
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imm <<= 12;
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if (negate)
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{
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imm |= 1 << 31;
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}
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return BitConverter.Int32BitsToSingle(imm);
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}
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}
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} |