mirror of
https://github.com/GreemDev/Ryujinx
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7603dbe3c8
* Add missing U8/S8 types from shader I2I instruction * Better names * Fix dstIsSignedInt
131 lines
No EOL
4.6 KiB
C#
131 lines
No EOL
4.6 KiB
C#
using Ryujinx.Graphics.Shader.Decoders;
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using Ryujinx.Graphics.Shader.IntermediateRepresentation;
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using Ryujinx.Graphics.Shader.Translation;
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using System;
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using static Ryujinx.Graphics.Shader.Instructions.InstEmitHelper;
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using static Ryujinx.Graphics.Shader.IntermediateRepresentation.OperandHelper;
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namespace Ryujinx.Graphics.Shader.Instructions
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{
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static class InstEmitAluHelper
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{
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public static long GetIntMin(IDstFmt type)
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{
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return type switch
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{
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IDstFmt.U16 => ushort.MinValue,
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IDstFmt.S16 => short.MinValue,
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IDstFmt.U32 => uint.MinValue,
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IDstFmt.S32 => int.MinValue,
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_ => throw new ArgumentException($"The type \"{type}\" is not a supported integer type.")
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};
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}
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public static long GetIntMax(IDstFmt type)
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{
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return type switch
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{
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IDstFmt.U16 => ushort.MaxValue,
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IDstFmt.S16 => short.MaxValue,
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IDstFmt.U32 => uint.MaxValue,
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IDstFmt.S32 => int.MaxValue,
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_ => throw new ArgumentException($"The type \"{type}\" is not a supported integer type.")
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};
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}
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public static long GetIntMin(ISrcDstFmt type)
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{
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return type switch
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{
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ISrcDstFmt.U8 => byte.MinValue,
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ISrcDstFmt.S8 => sbyte.MinValue,
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ISrcDstFmt.U16 => ushort.MinValue,
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ISrcDstFmt.S16 => short.MinValue,
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ISrcDstFmt.U32 => uint.MinValue,
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ISrcDstFmt.S32 => int.MinValue,
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_ => throw new ArgumentException($"The type \"{type}\" is not a supported integer type.")
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};
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}
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public static long GetIntMax(ISrcDstFmt type)
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{
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return type switch
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{
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ISrcDstFmt.U8 => byte.MaxValue,
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ISrcDstFmt.S8 => sbyte.MaxValue,
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ISrcDstFmt.U16 => ushort.MaxValue,
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ISrcDstFmt.S16 => short.MaxValue,
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ISrcDstFmt.U32 => uint.MaxValue,
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ISrcDstFmt.S32 => int.MaxValue,
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_ => throw new ArgumentException($"The type \"{type}\" is not a supported integer type.")
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};
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}
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public static Operand GetPredLogicalOp(EmitterContext context, BoolOp logicOp, Operand input, Operand pred)
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{
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return logicOp switch
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{
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BoolOp.And => context.BitwiseAnd(input, pred),
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BoolOp.Or => context.BitwiseOr(input, pred),
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BoolOp.Xor => context.BitwiseExclusiveOr(input, pred),
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_ => input
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};
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}
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public static void SetZnFlags(EmitterContext context, Operand dest, bool setCC, bool extended = false)
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{
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if (!setCC)
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{
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return;
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}
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if (extended)
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{
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// When the operation is extended, it means we are doing
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// the operation on a long word with any number of bits,
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// so we need to AND the zero flag from result with the
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// previous result when extended is specified, to ensure
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// we have ZF set only if all words are zero, and not just
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// the last one.
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Operand oldZF = GetZF();
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Operand res = context.BitwiseAnd(context.ICompareEqual(dest, Const(0)), oldZF);
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context.Copy(GetZF(), res);
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}
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else
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{
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context.Copy(GetZF(), context.ICompareEqual(dest, Const(0)));
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}
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context.Copy(GetNF(), context.ICompareLess(dest, Const(0)));
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}
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public static void SetFPZnFlags(EmitterContext context, Operand dest, bool setCC, Instruction fpType = Instruction.FP32)
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{
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if (setCC)
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{
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Operand zero = ConstF(0);
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if (fpType == Instruction.FP64)
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{
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zero = context.FP32ConvertToFP64(zero);
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}
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context.Copy(GetZF(), context.FPCompareEqual(dest, zero, fpType));
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context.Copy(GetNF(), context.FPCompareLess (dest, zero, fpType));
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}
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}
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public static Operand AddWithCarry(EmitterContext context, Operand lhs, Operand rhs, out Operand carryOut)
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{
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Operand result = context.IAdd(lhs, rhs);
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// C = Rd < Rn
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carryOut = context.INegate(context.ICompareLessUnsigned(result, lhs));
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return result;
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}
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}
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} |