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nodestrand.beta

Description

Turns any grayscale into a clean, tunable mask around a movable threshold. Paste it in, wire your value into one pin, take the mask out the other end.

It's a windowed soft-threshold: it builds a band around Position, runs your input through a smoothstep across that band, then shapes the falloff with a Contrast power curve and saturates the result to 0..1. So instead of a hard cutoff you get a clean feathered edge whose width, location, and punch you actually control — and an Invert toggle to flip which side reads as "on". No textures of its own, all native nodes.

Reach for it whenever you've got a value and you want a mask out of it: gate opacity off noise, build a dissolve/reveal by animating Position, isolate a height/AO/distance band, or drive a Lerp alpha between two looks. It's the little remap you end up rebuilding by hand on every other material — here it's one paste.

Wiring (two manual hookups)

It's a paste-in node group, so there are no material settings to change — it inherits whatever the host material already is.

  • It ships with a placeholder Constant (0.5) on the input, framed and labelled. Delete it and wire your own grayscale into the SmoothStep Value pin.
  • Wire the Result (mask) node into whatever wants a 0..1 signal — an opacity, a Lerp alpha, a blend mask, an emissive gate.

A T3D paste never carries those links, so both are by hand.

Params

  • Position — where the threshold sits along your input (0..1).
  • Width — half-width of the soft band on each side. Small = hard edge, large = gentle ramp.
  • Contrast — power exponent on the band. 1 = the raw smooth ramp; higher = steeper/punchier; below 1 lifts the low end.
  • Invert — flips the mask (compile-time switch, so it costs nothing).

Expose any of them through a Material Instance to tune per use-case.

material graph

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      MaterialExpressionEditorX=160
      MaterialExpressionEditorY=60
      MaterialExpressionGuid=C81226E51206DD75DE851BB22811640C
      Material="/Script/UnrealEd.PreviewMaterial'/Engine/Transient.HistogramScanRemap'"
   End Object
   MaterialExpression="/Script/Engine.MaterialExpressionStaticSwitchParameter'MaterialExpressionStaticSwitchParameter_11'"
   NodePosX=160
   NodePosY=60
   NodeGuid=9ED960F63E2CCC6AD2D7FC760521FFD6
   CustomProperties Pin (PinId=27B6916C01B48AF5266D55F3C92F7EED,PinName="True",PinType.PinCategory="optional",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PinType.bSerializeAsSinglePrecisionFloat=False,LinkedTo=(MaterialGraphNode_10 D6515A42E23F5ADFA56F3AB189067EFE,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False)
   CustomProperties Pin (PinId=D6F0B337AB67E74C48C601A007B08180,PinName="False",PinType.PinCategory="optional",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PinType.bSerializeAsSinglePrecisionFloat=False,LinkedTo=(MaterialGraphNode_9 363A55EE89C6DF765777BCCC6524CAE2,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False)
   CustomProperties Pin (PinId=91F5290EB26E26AC5896B50677ECD2C6,PinName="Output",Direction="EGPD_Output",PinType.PinCategory="",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PinType.bSerializeAsSinglePrecisionFloat=False,LinkedTo=(MaterialGraphNode_12 DBC22FEC1324CB8532503FE68D425CAF,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False)
End Object

Begin Object Class=/Script/UnrealEd.MaterialGraphNode Name="MaterialGraphNode_12"
   Begin Object Class=/Script/Engine.MaterialExpressionSaturate Name="MaterialExpressionSaturate_12"
   End Object
   Begin Object Name="MaterialExpressionSaturate_12"
      Input=(Expression="/Script/Engine.MaterialExpressionStaticSwitchParameter'MaterialGraphNode_11.MaterialExpressionStaticSwitchParameter_11'")
      MaterialExpressionEditorX=440
      MaterialExpressionEditorY=80
      MaterialExpressionGuid=DB695EB580E21828E9A11F84A1AD191F
      Material="/Script/UnrealEd.PreviewMaterial'/Engine/Transient.HistogramScanRemap'"
   End Object
   MaterialExpression="/Script/Engine.MaterialExpressionSaturate'MaterialExpressionSaturate_12'"
   NodePosX=440
   NodePosY=80
   NodeGuid=0BF70D6E97E38CA301F3E089EDE4C9A7
   CustomProperties Pin (PinId=DBC22FEC1324CB8532503FE68D425CAF,PinName="Input",PinType.PinCategory="optional",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PinType.bSerializeAsSinglePrecisionFloat=False,LinkedTo=(MaterialGraphNode_11 91F5290EB26E26AC5896B50677ECD2C6,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False)
   CustomProperties Pin (PinId=D6B461F1CBC6817138E8FA41C06A51CB,PinName="Output",Direction="EGPD_Output",PinType.PinCategory="",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PinType.bSerializeAsSinglePrecisionFloat=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False)
End Object

Begin Object Class=/Script/UnrealEd.MaterialGraphNode_Comment Name="MaterialGraphNode_Comment_13"
   Begin Object Class=/Script/Engine.MaterialExpressionComment Name="MaterialExpressionComment_C13"
   End Object
   Begin Object Name="MaterialExpressionComment_C13"
      SizeX=400
      SizeY=220
      Text="Result (mask) → an opacity / Lerp alpha / blend mask"
      CommentColor=(R=0.162029,G=0.417885,B=0.063010,A=1.000000)
      MaterialExpressionEditorX=400
      MaterialExpressionEditorY=0
      MaterialExpressionGuid=0B72BC01BCDAE7AF90A93CF036E8908B
      Material="/Script/UnrealEd.PreviewMaterial'/Engine/Transient.HistogramScanRemap'"
   End Object
   MaterialExpressionComment="/Script/Engine.MaterialExpressionComment'MaterialExpressionComment_C13'"
   CommentColor=(R=0.162029,G=0.417885,B=0.063010,A=1.000000)
   NodePosX=400
   NodePosY=0
   NodeWidth=400
   NodeHeight=220
   NodeComment="Result (mask) → an opacity / Lerp alpha / blend mask"
   NodeGuid=0AF9C05DB5AC782A554F7BD6210A121A
End Object

Nodes: Comment (x3), ScalarParameter (x3), Add, Constant, Material, OneMinus, Power, Saturate, SmoothStep, StaticSwitchParameter, Subtract

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Histogram Scan Remap

@hazefounder
Node groupNanite-friendly
UE 5.6UE 5.7
0
license

CC0 1.0: Public Domain

Public domain: use it however you like, no credit required.

dependencies

Zero dependencies

Pastes and works in any UE 5.3+ project. No textures, no material functions, no MPCs.

tags
#procedural#all-native#mask#threshold#remap#contrast#smoothstep#grayscale
ue compatibility
UE 5.3UE 5.4UE 5.5UE 5.6UE 5.7

Details

Last update
2 hours ago
Published
2 hours ago
Nodes
14