97 lines
No EOL
3.5 KiB
C#
97 lines
No EOL
3.5 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(IntegerType type)
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{
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switch (type)
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{
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case IntegerType.U8: return byte.MinValue;
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case IntegerType.S8: return sbyte.MinValue;
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case IntegerType.U16: return ushort.MinValue;
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case IntegerType.S16: return short.MinValue;
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case IntegerType.U32: return uint.MinValue;
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case IntegerType.S32: return int.MinValue;
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}
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throw new ArgumentException($"The type \"{type}\" is not a supported int type.");
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}
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public static long GetIntMax(IntegerType type)
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{
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switch (type)
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{
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case IntegerType.U8: return byte.MaxValue;
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case IntegerType.S8: return sbyte.MaxValue;
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case IntegerType.U16: return ushort.MaxValue;
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case IntegerType.S16: return short.MaxValue;
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case IntegerType.U32: return uint.MaxValue;
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case IntegerType.S32: return int.MaxValue;
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}
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throw new ArgumentException($"The type \"{type}\" is not a supported int type.");
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}
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public static Operand GetPredLogicalOp(
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EmitterContext context,
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LogicalOperation logicalOp,
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Operand input,
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Operand pred)
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{
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switch (logicalOp)
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{
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case LogicalOperation.And: return context.BitwiseAnd (input, pred);
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case LogicalOperation.Or: return context.BitwiseOr (input, pred);
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case LogicalOperation.ExclusiveOr: return context.BitwiseExclusiveOr(input, pred);
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}
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return input;
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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(context);
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Operand res = context.BitwiseAnd(context.ICompareEqual(dest, Const(0)), oldZF);
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context.Copy(GetZF(context), res);
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}
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else
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{
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context.Copy(GetZF(context), context.ICompareEqual(dest, Const(0)));
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}
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context.Copy(GetNF(context), context.ICompareLess(dest, Const(0)));
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}
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public static void SetFPZnFlags(EmitterContext context, Operand dest, bool setCC)
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{
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if (setCC)
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{
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context.Copy(GetZF(context), context.FPCompareEqual(dest, ConstF(0)));
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context.Copy(GetNF(context), context.FPCompareLess (dest, ConstF(0)));
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}
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}
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}
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} |