1 files changed, 53 insertions, 0 deletions
diff --git a/Assets/ThirdParty/AmplifyShaderEditor/Plugins/Editor/Nodes/Textures/HeightMapBlendNode.cs b/Assets/ThirdParty/AmplifyShaderEditor/Plugins/Editor/Nodes/Textures/HeightMapBlendNode.cs
new file mode 100644
index 00000000..fc1744f5
--- /dev/null
+++ b/Assets/ThirdParty/AmplifyShaderEditor/Plugins/Editor/Nodes/Textures/HeightMapBlendNode.cs
@@ -0,0 +1,53 @@
+// Amplify Shader Editor - Visual Shader Editing Tool
+// Copyright (c) Amplify Creations, Lda <info@amplify.pt>
+//
+// Custom Node HeightMap Texture Masking
+// Donated by Rea
+
+using UnityEngine;
+using System;
+
+namespace AmplifyShaderEditor
+{
+	[Serializable]
+	[NodeAttributes( "HeightMap Texture Blend", "Textures", "Advanced Texture Blending by using heightMap and splatMask, usefull for texture layering ", null, KeyCode.None, true, false, null, null, "Rea" )]
+	public sealed class HeightMapBlendNode : ParentNode
+	{
+
+		protected override void CommonInit( int uniqueId )
+		{
+			base.CommonInit( uniqueId );
+			AddInputPort( WirePortDataType.FLOAT, false, "HeightMap" );
+			AddInputPort( WirePortDataType.FLOAT, false, "SplatMask" );
+			AddInputPort( WirePortDataType.FLOAT, false, "BlendStrength" );
+			AddOutputVectorPorts( WirePortDataType.FLOAT, Constants.EmptyPortValue );
+			m_textLabelWidth = 120;
+			m_useInternalPortData = true;
+			m_inputPorts[ 2 ].FloatInternalData = 1;
+			m_previewShaderGUID = "b2ac23d6d5dcb334982b6f31c2e7a734";
+		}
+
+		public override string GenerateShaderForOutput( int outputId, ref MasterNodeDataCollector dataCollector, bool ignoreLocalvar )
+		{
+			if ( m_outputPorts[ 0 ].IsLocalValue( dataCollector.PortCategory ) )
+				return m_outputPorts[ 0 ].LocalValue( dataCollector.PortCategory );
+
+			string HeightMap = m_inputPorts[ 0 ].GeneratePortInstructions( ref dataCollector );
+			string SplatMask = m_inputPorts[ 1 ].GeneratePortInstructions( ref dataCollector);
+			string Blend = m_inputPorts[ 2 ].GeneratePortInstructions( ref dataCollector );
+
+			string HeightMask =  "saturate(pow(((" + HeightMap + "*" + SplatMask + ")*4)+(" + SplatMask + "*2)," + Blend + "))";
+			string varName = "HeightMask" + OutputId;
+
+			RegisterLocalVariable( 0, HeightMask, ref dataCollector , varName );
+			return m_outputPorts[ 0 ].LocalValue( dataCollector.PortCategory );
+		}
+		/*
+         A = (heightMap * SplatMask)*4
+         B = SplatMask*2
+         C = pow(A+B,Blend)
+         saturate(C)
+         saturate(pow(((heightMap * SplatMask)*4)+(SplatMask*2),Blend));
+         */
+	}
+}