implemented SPIR-V shader export

AssetStudioUtility/CSspv/Instruction.cs

@@ -0,0 +1,51 @@
+using System.Collections.Generic;
+
+namespace SpirV
+{
+	public enum OperandQuantifier
+	{
+		/// <summary>
+		/// 1
+		/// </summary>
+		Default,
+		/// <summary>
+		/// 0 or 1
+		/// </summary>
+		Optional,
+		/// <summary>
+		/// 0+
+		/// </summary>
+		Varying
+	}
+
+	public class Operand
+	{
+		public Operand(OperandType kind, string name, OperandQuantifier quantifier)
+		{
+			Name = name;
+			Type = kind;
+			Quantifier = quantifier;
+		}
+
+		public string Name { get; }
+		public OperandType Type { get; }
+		public OperandQuantifier Quantifier { get; }
+	}
+
+	public class Instruction
+	{
+		public Instruction (string name)
+			: this (name, new List<Operand> ())
+		{
+		}
+
+		public Instruction (string name, IReadOnlyList<Operand> operands)
+		{
+			Operands = operands;
+			Name = name;
+		}
+
+		public string Name { get; }
+		public IReadOnlyList<Operand> Operands { get; }
+	}
+}