material
Voronoi Noise Function

Exposure: public
UE Version: 4.23
Calvinatorr

December 30, 2019, 4:56 pm
Code to copy
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   End Object
   Begin Object Name="MaterialExpressionFunctionOutput_0"
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      Code="#include \"/Engine/Private/Random.ush\"\r\n\r\nfloat AccumDist = 1;\r\n\r\nfor ( int x = -1; x <= 1; x++ )\r\n{\r\n\tfor ( int y = -1; y <= 1; y++ )\r\n\t{\r\n\t\tfor ( int z = -1; z <= 1; z++ )\r\n\t\t{\r\n\t\t\tfloat3 CurrentCell = floor(UV) + float3(x, y, z); // Find neighbouring UV or current (when x,y == 0)\r\n\r\n\t\t\t// Get random point inside cell\r\n\t\t\tfloat2 Seedf2 = float2(Seed, Seed);\r\n\t\t\tfloat3 Rand = float3(PseudoRandom(CurrentCell.xy + Seedf2), PseudoRandom(CurrentCell.xz + Seedf2), PseudoRandom(CurrentCell.yz + Seedf2));\r\n\t\t\tfloat3 Point = frac(Rand) + CurrentCell;\r\n\t\t\t\r\n\t\t\tfloat3 Dir = Point - UV;\t// Generate vector\t\r\n\t\t\tfloat Dist = dot(Dir, Dir); // Get distance squared\r\n\t\t\t\r\n\t\t\tAccumDist = min(AccumDist, Dist); // Combine with current signed distance field (sdf)\r\n\t\t}\r\n\t}\r\n}\r\n\r\nreturn AccumDist; // sqrt() this to get distance"
      Description="Cell Noise (Worley)"
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End Object
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      MaterialExpressionEditorY=816
      MaterialExpressionGuid=2EE6B81C41A352FD975E2694BAC6DF42
      Material=Material'"/Engine/Transient.Material_1"'
   End Object
   MaterialExpression=MaterialExpressionFunctionInput'"MaterialExpressionFunctionInput_2"'
   NodePosX=592
   NodePosY=816
   NodeGuid=3D15AD6E49F00C6A8D8C1195A3C4573C
   CustomProperties Pin (PinId=313EF22A44ABF1F8F393499312EB768E,PinName="Preview",PinType.PinCategory="optional",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
   CustomProperties Pin (PinId=40BFEC57409CA2881E04F29CA34173A0,PinName="Output",PinFriendlyName=" ",Direction="EGPD_Output",PinType.PinCategory="",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_12 2AB9BBE144A49E2710B82E9441D4F50B,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
End Object
Begin Object Class=/Script/UnrealEd.MaterialGraphNode Name="MaterialGraphNode_14"
   Begin Object Class=/Script/Engine.MaterialExpressionFunctionOutput Name="MaterialExpressionFunctionOutput_2"
   End Object
   Begin Object Name="MaterialExpressionFunctionOutput_2"
      OutputName="Inverse Squared"
      SortPriority=10
      A=(Expression=MaterialExpressionDivide'"MaterialGraphNode_10.MaterialExpressionDivide_0"')
      bLastPreviewed=True
      Id=8440E45F40FBB959084940BE99CA5D6C
      MaterialExpressionEditorX=1152
      MaterialExpressionEditorY=640
      MaterialExpressionGuid=98C33F7D427598DB3A121D9D025219E6
      Material=Material'"/Engine/Transient.Material_1"'
   End Object
   MaterialExpression=MaterialExpressionFunctionOutput'"MaterialExpressionFunctionOutput_2"'
   NodePosX=1152
   NodePosY=640
   NodeGuid=ED237FCC43711202A960C196A57F9A8A
   CustomProperties Pin (PinId=43D889604F2436D820B3879CFB2EDFB6,PinName="Input",PinFriendlyName=" ",PinType.PinCategory="required",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_10 684C0AA14B849E7555C9D0B8AD4B4275,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
   CustomProperties Pin (PinId=567E906C496C515FED0FF7A2026F2890,PinName="Output",PinFriendlyName=" ",Direction="EGPD_Output",PinType.PinCategory="",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
End Object
Begin Object Class=/Script/UnrealEd.MaterialGraphNode Name="MaterialGraphNode_2"
   Begin Object Class=/Script/Engine.MaterialExpressionWorldPosition Name="MaterialExpressionWorldPosition_0"
   End Object
   Begin Object Name="MaterialExpressionWorldPosition_0"
      MaterialExpressionEditorX=-768
      MaterialExpressionEditorY=320
      MaterialExpressionGuid=89E3D14E427896F20C7A9C90D522FA94
      Material=Material'"/Engine/Transient.Material_1"'
      Function=MaterialFunction'"/Engine/Transient.CellNoise_Worley_SF"'
   End Object
   MaterialExpression=MaterialExpressionWorldPosition'"MaterialExpressionWorldPosition_0"'
   NodePosX=-768
   NodePosY=320
   NodeGuid=F9E949794C515529A82098A32DD62727
   CustomProperties Pin (PinId=162CB8724CB79526A526BAB3D08C8A08,PinName="Output",PinFriendlyName=" ",Direction="EGPD_Output",PinType.PinCategory="",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_8 D8DC5732403B91F9D869A9B65CDD5048,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
End Object
Begin Object Class=/Script/UnrealEd.MaterialGraphNode Name="MaterialGraphNode_8"
   Begin Object Class=/Script/Engine.MaterialExpressionMultiply Name="MaterialExpressionMultiply_4"
   End Object
   Begin Object Name="MaterialExpressionMultiply_4"
      A=(Expression=MaterialExpressionWorldPosition'"MaterialGraphNode_2.MaterialExpressionWorldPosition_0"')
      ConstB=0.100000
      MaterialExpressionEditorX=-576
      MaterialExpressionEditorY=336
      MaterialExpressionGuid=731BA59B44720B4ABECD51A95292AF05
      Material=Material'"/Engine/Transient.Material_1"'
      Function=MaterialFunction'"/Engine/Transient.CellNoise_Worley_SF"'
   End Object
   MaterialExpression=MaterialExpressionMultiply'"MaterialExpressionMultiply_4"'
   NodePosX=-576
   NodePosY=336
   NodeGuid=0EEEE2734BD17BF30F091E9A4BF1F0A5
   CustomProperties Pin (PinId=D8DC5732403B91F9D869A9B65CDD5048,PinName="A",PinType.PinCategory="optional",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_2 162CB8724CB79526A526BAB3D08C8A08,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
   CustomProperties Pin (PinId=305D47334E46579C38AE298EFAA4DD48,PinName="B",PinType.PinCategory="optional",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
   CustomProperties Pin (PinId=30FB7A9942E0C084A641A9ABDC67A0B4,PinName="Output",PinFriendlyName=" ",Direction="EGPD_Output",PinType.PinCategory="",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_4 165693604BFD34F3556DABA1E57866A5,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
End Object
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Versions
December 30, 2019
Removed macro completely. Let Unreal decide

Diff
Replace FLATTEN with UNROLL

See Diff
Initial

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Voronoi Noise Function

Calvinatorr

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