Material Function Reference

Material Function Reference

Blends / Gradient / Image Adjustment / Math / Misc / Opacity / Particles / Pivot Painter / Procedurals / Reflections / Shading / Texturing / VectorOps / WorldPositionOffset

https://docs.unrealengine.com/latest/INT/Engine/Rendering/Materials/Functions/Reference/index.html

https://docs.unrealengine.com/latest/INT/Engine/Rendering/Materials/Functions/index.html

Blend Functions

• Blend_ColorBurn
• Blend_ColorDodge
• Blend_Darken
• Blend_Difference
• Blend_Exclusion
• Blend_HardLight
• Blend_Lighten
• Blend_LinearBurn
• Blend_LinearDodge
• Blend_LinearLight
• Blend_Overlay
• Blend_PinLight
• Blend_Screen
• Blend_SoftLight
•  Lerp_ScratchGrime2

Coordinates

 BlurSampleOffsets

 LocalPosition

 PantextureCoordinateChannelfrom-1ton+1

 PantextureCoordinateFrom-1toN+1

 SampleSceneDepth

 UVBrickpatterns

 UVRemap_0-1_ToRange

 UVToLongLat

Cubemaps

 UVToLongLat

Debug

  DebugOnOff

  DebugTimeSine

Foliage

 PixelDepthOffset_Foliage

Get Post Processing Setting

 GetAmbientCubemapIntensity

 GetAmbientCubemapTint

Gradient Functions

• Radial Gradient Exponential
• Diamond Gradient
• Linear Gradient
• Smooth Curve
• Value Step
• GradientMap_Multi

Image Adjustment Functions

• 3ColorBlend
• CheapContrast
• CheapContrast_RGB
• SCurve
• 3PointLevels
• HueShift
• SmoothThreshold
• DeriveHDRfromHDR
• RaiseBlackLevelsByPercentage

Lighting

 PixelDepthOffset_Foliage

Material Layer Blend

 MatLayerBlend_BreakBaseColor

 MatLayerBlend_BreakNormal

 MatLayerBlend_TenLayerBlend

Math Functions

• Add Components
• Pi
• LinearSine
• VectorToRadialValue
• CreateThirdOrthogonalVector
• DeriveNormalZ_Function
• MakeVectorsOrthogonal
• MultiplyAdd
• RayTracedSphere
• RGBtoHSV
• SafeNormalize
• SumOfAConsecutiveNumberSequence
• Transform3x3Matrix
• TransformToClipSpace
• UnpackNormalFromFloat

Misc Math Functions

• TimeWithSpeedVariable
• OffsetAndScaleTo1
• PassThrough
• SplitComponents
• Flipbook

MaxScripts

 MS_MultiNormal_UVnormals

 MS_MultiNormal_VertexColorNormals

 MS_SequencePainter_Sequence

 MS_SequencePainter_SequenceFlipbook

Misc

 SpirBlur-SceneTexture

Opacity Functions

• SoftOpacity

Particle Functions

• 3dParticleOpacity
• Distance_Blend

Pivot Painter Functions

• PivotPainter_HierarchyData
• PivotPainter_PerObjectData
• PivotPainter_PerObjectFoliageData
• PivotPainter_TreeData

Procedural Functions

• GeneratedBand
• GeneratedOffsetBands
• NormalFromHeightmap
• NormalFromHeightmapChaos
• NormalFromFunction
• ObjectSpaceFallOff

Reflections Functions

• ReflectionVectorSoft
• ViewAlignedReflection
• WorldAlignedReflection
• CustomReflectionVector

Shading Functions

• FuzzyShading
• FuzzyShadingGrass
• MetallicShading

Texturing Functions

• CylindricalUVs
• DetailTexturing
• LocalAlignedTexture
• ZWorldSpaceFlow
• TextureCropping
• WorldAlignedNormal
• WorldAlignedTexture
• 3DSandMayaUVCoordinates
• CustomRotator
• HeightLerp
• CameraWorldBlend
• LocalSpaceSurfaceMirroring
• SubUV_Function
• TwoSidedTexturing
• WorldCoordinate3Way
• 3DSandmayaUVCoordnates
• BitMask
• BumpOffset_advanced
• FlowMaps
• FlowMaps_Simple
• FlowMaps_UV1
• HeightlerpWidthTwoHeightmaps
• LocalAlignend_TransformedWorldSpace
• MotionBlur-Texture
• PackeddistanceField
• SkyboxImage
• SlopeMask
• SprialBlur-SceneTexture
• TriplanarCameraVector
• VectorDisplacement
• WorldAlignedTexture
• WorldAlignedTexture_SeperateChannels
• WorldAlignedTexture_Complex
• WorldPositionBehindFromDepth_experimental
• WorldPositionWidthScale

Utility

 BoxMask-2D

 BoxMask-3D

Vectors

 CameraVectorWithWPOOptions

 RotateVector

VectorOps Functions

• Fresnel

VFX

 AppendMany

WorldPositionOffset Functions

• SimpleGrassWind
• SplineThicken
• CameraOffset
• ObjectPivotPoint
• ObjectScale
• PivotAxis
• RotateAboutWorldAxis_cheap
• StaticMeshMorphTargets
• Wind
• AlignMeshToTheCamera
• AttachMeshToTheCemara
• CenterPivotAroundVector
• ConstantScalebyDistance
• FixRotateaboutAxisNormals
• FlipbookWind
• GenerateASpline
• SplineBasedModelDeformation
• UVLayoutToWorldSpacePosition

Uncategorized

 1Dto2DIndex

 1Dto3DIndex

 2dArrayLookupByIndex

 2Dto1DIndex       ex)   8x8 grid would return cells 0~63.

 3ColorBlend

 3Dto1DIndex

 AlignFacingParticlesByVelocity2D

 AlphaOffset

 Axisalignedfresnel

 BakedDisplacement

 BeersLaw 베에르의 법칙: 용액의 흡광도와 농도 및 광투과 흡수물질층의 두께의 관계를 나타내는 법칙. ue4함수내용: -(두께 *깊이)^2.71

 BellCurve

 Blend_Overlay

 Blend_Screen

 BlendangleCorrectedNormals

 BlurSampleOffsets

 BoundingBoxBased_0-1_UVW

 BoxIntersection

 BreakOutFloat2Components

 BreakOutFloat3Components

 BreakOutFloat4Components

 BrickandTileUVs

 CalcLightsourceAngle

 CameraDepthFade

 CameraDirectionVector

 CanopyCreator_Branches

 CheapContrast

 CheckerPattern

 Cheoma_Key_Alpha

 ComponentBasisVectors

 ComponentPivotLocation

 Compute3DDeriv

 ComputeFilterWidth

 ComputeMipLevel

 Contrast_Preserve_Color

 CurlFrom3DDeriv

 CustomReflectionVector

 CustomRotator

 CylinderIntersection

 DebugBinaryValues-Float

 DebugBinaryValues-Int

 DebugFloat2Values

 DebugFloat3Values

 DebugFloat4Values

 DebugScalarValues

 DepthFromWordPosition

 DeriveTangentBias

 DiamondGradient

 DistanceField_Capsule

 DistanceField_Cylinder

 DistanceField_Intersection

 DistanceField_Sphere

 DistanceField_Subtract

 DistanceField_Union

 DistanceLimitedReflections

 DitherTemporalAA

 DrawLine-2D

 DrawLine-3D

 DynamicBranch

 Ellipsoid-ConeShadow-Texture Same as the above Sphere shadow but stretched along a specified axis. 

 ExponentialDensity

 FlattenNormal

 FlipBook

 FlipBook_MotionVectors

 FoliageScaleFactor

 FoliageZRoatation

 FOV

 Fresnel_Function

 FuzzyShading

 GradFrom3DDeriv

 HighPassFunction

 HighPassTexture

 HighPrecisionWorldPosTextureSampling

 HueShift

 Imposter_MotionVectors

 ImposterUVs

 InverseTransformMatrix

 Ladscape_Manual_UVW

 Lerp_Multiple_Float2

 Lerp_Multiple_Float3

 Lerp_Multiple_Float4

 Lerp_ScratchGrime

 LinearGradient

 LineIntervalIntersection

 LongLatToUV

 LumensFromLightSource

 Luminosity_And_Color

 MakeFloat2

 MakeFloat3

 MakeFloat4

 MatLayerBlend_AddWorldPositionOffset

 MatLayerBlend__AO

 MatLayerBlend_BakedNormal

 MatLayerBlend_BakedNormal_Simple_Add

 MatLayerBlend_BlendAngleCorrectedNormals

 MatLayerBlend_BreakOpacity

 MatLayerBlend_Decal

 MatLayerBlend_DecalUV3

 MatLayerBlend_Emissive

 MatLayerBlend_LightmassReplace

 MatLayerBlend_ModulateRoughness

 MatLayerBlend_ModulateSpecular

 MatLayerBlend_Multiply

 MatLayerBlend_MultiplyBaseColor

 MatLayerBlend_NormalBlend

 MatLayerBlend_NormalFlatten

 MatLayerBlend_OverrideBaseColor

 MatLayerBlend_OverrideDiaplacement

 MatLayerBlend_OverrideMeralness

 MatLayerBlend_OverrideOpacity

 MatLayerBlend_OverrideOpacityMask

 MatLayerBlend_OverrideSubSurface

 MatLayerBlend_OverrideWorldPositionOffset

 MatLayerBlend_ReplaceNormals

 MatLayerBlend_RoughnessOverride

 MatLayerBlend_SeparateNormalandColorClamps

 MatLayerBlend_Simple

 MatLayerBlend_Stain

 MatLayerBlend_Standard

 MatLayerBlend_StandardWidthDisplacement

 MatLayerBlend_StandardWidthMaskEdgeTint

 MatLayerBlend_Tint

 MatLayerBlend_TintAllChannels

 MatLayerBlend_TopNormal

 MF_RotateVector_90

 MS_CanopyCreatorMeshExpansion

 ms_PivotPainter2_CaculateMeshElementIndex

 ms_PivotPainter2_Decode8BitAlphaAxisExtent

 ms_PivotPainter2_DecodeAxisVector

 ms_PivotPainter2_DecodePosition

 ms_PivotPainter2_ReturnPrentTextureInfo

 ms_PivotPainter2_UnpackIntegerAsFloat

 MS_VertexanimationTools_MorphTargets

 ObjectAlignedVirtualPlaneCoordinates

 ObjectLocalBounds

 ObjectPivotPoint

 ObjectScale

 OctahedronToUnitVector

 OffsetAndScaleTo1

 OrthoFOV

 ParallaxOcclusionMapping

 ParticleDOF

 PassThrouth

 PerturbNormalHQ

 Pi

 PivotPainter_HierarchyData

 PivotPainter_PerObjectData

 PivotPainter_PerObjectFloiageData

 PivotPainter_TreeData

 PivotPainter2FoliageShader

 PixelInWorldUnits

 PlotFunctionOnGraph

 PlotFunctionOnGraph_Derivative

 PlotFunctionOnGraph_Setup_Input

 Prepare3DDeriv

 PreparePerturbNormalHQ

 QuadraticFormula

 RayMarchheightMap

 RayTraceSphereFalloff

 Round

 ScaleUVsAroundPoint

 ScaleUVsByCenter

 ScebeTextureAverage

 ScreenAlignedPixelToPixelUVs

 ScreenAlignedUVs

 ScreenResolution

 Scurve

 Sign

 Sign_Remapped

 SmoothCeil

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 SmoothStep  Returns a smooth Hermite interpolation between 0 and 1 for the value X (where X ranges between A and B) Clamped to 0 for X <= A and 1 for X >= B.

 Spherical-Cap-Intersection. This material function calculates the area of a spherical cap intersection given a light source angle and angle of visibility. Has option to use cheaper 'SmoothStep' calculation. In general this function is useful for pre-baking lookup textures but it can also be used in realtime when using the SmoothStep approximation.

float smoothstep(float edge0, float edge1, float x) {
  // Scale, bias and saturate x to 0..1 range
  x = clamp((x - edge0) / (edge1 - edge0), 0.0, 1.0); 
  // Evaluate polynomial
  return x * x * (3 - 2 * x);
}

float clamp(float x, float lowerlimit, float upperlimit) {
  if (x < lowerlimit)
    x = lowerlimit;
  if (x > upperlimit)
    x = upperlimit;
  return x;
}

https://docs.unrealengine.com/latest/INT/API/Runtime/Core/Math/FMath/index.html

https://docs.unrealengine.com/latest/INT/API/Runtime/Core/Math/FMath/SmoothStep/index.html

허마이트 보간법

http://terms.naver.com/entry.nhn?docId=3477557&cid=58439&categoryId=58439

http://egloos.zum.com/chulin28ho/v/5324893

https://en.wikipedia.org/wiki/Smoothstep

https://msdn.microsoft.com/ko-kr/library/hh308343.aspx

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 SpeedTreeColorVariation

 Sphere_AO

 Sphere-ConeShadow-Texture Returns the shadow response from a sphere in the world given a position and radius.

 SphereGradient-2D

 SphereGradient-3D

 Spherical-Cap-Intersection

 Spiralblur-Texture

 SplineThicken

 SplitComponents

 Sprite

 StaticMeshDecal_Function

 StaticMeshMorphTargets

 SteppingPannerTime

 SubUV_Function

 Swizzle

 TangentBias

 Texture_Bombing

 Texture_Bombing_POM

 TextureCropping

 TimeWithSpeedVatiable

 TransformImposterNormals

 TransfrotmNormals_Tangent_to_Vertex

 TransformToZVector

 UnitVectorToOctahedron

 UnSharpMaskFunction

 UnSharpMaskTexture

 UnWrapUVsForRender

 UVToLongLat

 VectorLength

 VectorToRadialValue

 VirtualPlaneCoordinates

 WorldAlignedBlend

 WorldAlignedNormal

 WorldCoordinate3Way

 WorldPosition-XY

 WorldPositionBehindTranslucency

 WorldUnitsInPixel