1 files changed, 104 insertions, 0 deletions
diff --git a/Assets/ThirdParty/AmplifyShaderEditor/Plugins/Editor/Nodes/ImageEffects/SimplexNoiseNode.cs b/Assets/ThirdParty/AmplifyShaderEditor/Plugins/Editor/Nodes/ImageEffects/SimplexNoiseNode.cs
new file mode 100644
index 00000000..ec946236
--- /dev/null
+++ b/Assets/ThirdParty/AmplifyShaderEditor/Plugins/Editor/Nodes/ImageEffects/SimplexNoiseNode.cs
@@ -0,0 +1,104 @@
+// Amplify Shader Editor - Visual Shader Editing Tool
+// Copyright (c) Amplify Creations, Lda <info@amplify.pt>
+
+//https://www.shadertoy.com/view/XsX3zB
+using System;
+using UnityEngine;
+using UnityEditor;
+
+
+namespace AmplifyShaderEditor
+{
+	public enum NoiseType
+	{
+		Simplex3D,
+		Simplex3DFractal
+	}
+
+	[Serializable]
+	[NodeAttributes( "[Deprecated] Simplex Noise", "Image Effects", "Noise generated via the Simplex algorithm",null,KeyCode.None,false,true)]
+	public sealed class SimplexNoiseNode : ParentNode
+	{
+		private string m_randomFuncBody;
+		private string m_simplex3dFuncBody;
+		private string m_simplex3dFractalFuncBody;
+
+		private const string RandomfunctionHeader = "Random3({0})";
+		private const string Simplex3dfunctionHeader = "Simplex3d({0})";
+		private const string Simplex3dFractalfunctionHeader = "Simplex3dFractal( {0})";
+
+		private const string NoiseTypeStr = "Type";
+
+		[SerializeField]
+		private NoiseType m_type = NoiseType.Simplex3D;
+
+		protected override void CommonInit( int uniqueId )
+		{
+			base.CommonInit( uniqueId );
+
+			IOUtils.AddFunctionHeader( ref m_randomFuncBody, "float3 Random3 ( float3 c )" );
+			IOUtils.AddFunctionLine( ref m_randomFuncBody, "float fracMul = 512.0;float j = 4096.0*sin ( dot ( c, float3 ( 17.0, 59.4, 15.0 ) ) );float3 r;r.z = frac ( fracMul*j );j *= .125;r.x = frac ( fracMul*j );j *= .125;r.y = frac ( fracMul*j );return r - 0.5;" );
+			IOUtils.CloseFunctionBody( ref m_randomFuncBody );
+
+			IOUtils.AddFunctionHeader( ref m_simplex3dFuncBody, "float3 Simplex3d ( float3 p )" );
+			IOUtils.AddFunctionLine( ref m_simplex3dFuncBody, "float F3 = 0.3333333;float G3 = 0.1666667;float3 s = floor ( p + dot ( p, F3.xxx ) );float3 x = p - s + dot ( s,  G3.xxx );float3 e = step ( ( 0.0 ).xxx, x - x.yzx );float3 i1 = e*( 1.0 - e.zxy );float3 i2 = 1.0 - e.zxy*( 1.0 - e );float3 x1 = x - i1 + G3;float3 x2 = x - i2 + 2.0*G3;float3 x3 = x - 1.0 + 3.0*G3;float4 w, d;w.x = dot ( x, x );w.y = dot ( x1, x1 );w.z = dot ( x2, x2 );w.w = dot ( x3, x3 );w = max ( 0.6 - w, 0.0 );d.x = dot ( Random3 ( s ), x );d.y = dot ( Random3 ( s + i1 ), x1 );d.z = dot ( Random3 ( s + i2 ), x2 );d.w = dot ( Random3 ( s + 1.0 ), x3 );w *= w;w *= w;d *= w;return dot ( d, ( 52.0 ).xxx ).xxx;" );
+			IOUtils.CloseFunctionBody( ref m_simplex3dFuncBody );
+
+			IOUtils.AddFunctionHeader( ref m_simplex3dFractalFuncBody, "float3 Simplex3dFractal ( float3 m )" );
+			IOUtils.AddFunctionLine( ref m_simplex3dFractalFuncBody, "return (0.5333333*Simplex3d ( m ) + 0.2666667*Simplex3d ( 2.0*m ) + 0.1333333*Simplex3d ( 4.0*m ) + 0.0666667*Simplex3d ( 8.0*m )).xxx;" );
+			IOUtils.CloseFunctionBody( ref m_simplex3dFractalFuncBody );
+
+			AddInputPort( WirePortDataType.FLOAT3, false, "Position" );
+			AddInputPort( WirePortDataType.FLOAT, false, "Width" );
+			AddOutputPort( WirePortDataType.FLOAT3, Constants.EmptyPortValue );
+			m_textLabelWidth = 50;
+			m_useInternalPortData = true;
+			m_autoWrapProperties = true;
+		}
+
+		public override void DrawProperties()
+		{
+			base.DrawProperties();
+			m_type = ( NoiseType ) EditorGUILayoutEnumPopup( NoiseTypeStr, m_type );
+		}
+
+		public override string GenerateShaderForOutput( int outputId, ref MasterNodeDataCollector dataCollector, bool ignoreLocalvar )
+		{
+			
+
+			string posValue = m_inputPorts[ 0 ].GeneratePortInstructions( ref dataCollector );
+			string widthValue = m_inputPorts[ 1 ].GeneratePortInstructions( ref dataCollector );
+			dataCollector.AddFunctions( RandomfunctionHeader, m_randomFuncBody, "0" );
+			string result = string.Empty;
+			switch ( m_type )
+			{
+				case NoiseType.Simplex3D:
+				{
+					string finalValue = dataCollector.AddFunctions( Simplex3dfunctionHeader, m_simplex3dFuncBody, posValue + "*" + widthValue );
+					result = finalValue + "* 0.5 + 0.5";
+				}break;
+
+				case NoiseType.Simplex3DFractal:
+				{
+					dataCollector.AddFunctions( Simplex3dfunctionHeader, m_simplex3dFuncBody, posValue + "*" + widthValue );
+					string finalValue = dataCollector.AddFunctions( Simplex3dFractalfunctionHeader, m_simplex3dFractalFuncBody, posValue + "*" + widthValue + "+" + widthValue );
+					result = finalValue + "* 0.5 + 0.5";
+				}break;
+			}
+
+			return CreateOutputLocalVariable( 0, result, ref dataCollector );
+		}
+
+		public override void ReadFromString( ref string[] nodeParams )
+		{
+			base.ReadFromString( ref nodeParams );
+			m_type = ( NoiseType ) Enum.Parse( typeof( NoiseType ), GetCurrentParam( ref nodeParams ) );
+		}
+
+		public override void WriteToString( ref string nodeInfo, ref string connectionsInfo )
+		{
+			base.WriteToString( ref nodeInfo, ref connectionsInfo );
+			IOUtils.AddFieldValueToString( ref nodeInfo, m_type );
+		}
+	}
+}