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This page provides information on the native Unreal Materials and Material Instances.

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Overview

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V-Ray for Unreal support the rendering of native Unreal Materials and Material Instances. Materials are used to calculate how light interacts with surfaces. These calculations are done using incoming data that is input to the Material from a variety of images (textures) and math expressions, as well as from various property settings inherent to the Material itself. Each time a change is made in the material it has to recompile which can be very time consuming depending on the complexity of the shading graph. Material instancing is used to change the appearance of a Material without incurring an expensive recompilation of the Material using predefined parameters. For more information on Unreal Materials and Material Instances check the Materials documentation.

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Supported Expressions

Below are listed the expressions in the Material Editor that are supported by V-Ray for Unreal.

UI Text Box

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Native Unreal Materials are supported in Hybrid rendering. Make sure you meet the System Requirements.

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Tabs Page

title	Atmosphere

Expression Name

Support

AtmosphericFogColor

Status


colour	Grey
title	Not Supported

Tabs Page

title	Constants

Expression Name

Support

Constant

Status

colour	Green
title	Supported

Constant2Vector

Status

colour	Green
title	Supported

Constant3Vector

Status

colour	Green
title	Supported

Constant4Vector

Status

colour	Green
title	Supported

DistanceCullFade

Status


colour	Grey
title	Not Supported

ParticleColor

Status


colour	Grey
title	Not Supported

ParticleDirection

Status


colour	Grey
title	Not Supported

ParticleMotionBlurFade

Status


colour	Grey
title	Not Supported

ParticleRadius

Status


colour	Grey
title	Not Supported

ParticleRelativeTime

Status


colour	Grey
title	Not Supported

ParticleSize

Status


colour	Grey
title	Not Supported

ParticleSpeed

Status


colour	Grey
title	Not Supported

PerInstanceFadeAmount

Status


colour	Grey
title	Not Supported

PerInstanceRandom

Status


colour	Grey
title	Not Supported

Time

Status


colour	Yellow
title	Partial

TwoSidedSign

Status

colour	Green
title	Supported

VertexColor

Status

colour	Green
title	Supported

View Property

Status


colour	Yellow
title	Partial

Precomputed AO Mask

Status


colour	Grey
title	Not Supported

Tabs Page

title	Coordinates

Expression Name

Support

LightmapUVs

Status


colour	Grey
title	Not Supported

ObjectRadius

Status

colour	Green
title	Supported

Panner

Status

colour	Green
title	Supported

ParticlePositionWS

Status


colour	Grey
title	Not Supported

Rotator

Status

colour	Green
title	Supported

SceneTexelSize

Status


colour	Grey
title	Not Supported

ScreenPosition

Status

colour	Green
title	Supported

TextureCoordinate

Status


colour	Yellow
title	Partial

ViewSize

Status


colour	Grey
title	Not Supported

WorldPosition

Status

colour	Green
title	Supported

Tabs Page

title	Custom

Expression Name

Support

Custom

Status


colour	Grey
title	Not Supported

Tabs Page

title	Depth

Expression Name

Support

DepthFade

Status


colour	Grey
title	Not Supported

PixelDepth

Status

colour	Green
title	Supported

SceneDepth

Status


colour	Grey
title	Not Supported

Tabs Page

title	Function

Expression Name

Support

FunctionInput

Status

colour	Green
title	Supported

FunctionOutput

Status

colour	Green
title	Supported

MaterialFunctionCall

Status

colour	Green
title	Supported

StaticBool

Status

colour	Green
title	Supported

StaticSwitch

Status

colour	Green
title	Supported

Tabs Page

title	Material Attributes

Expression Name

Support

BreakMaterialAttributes

Status

colour	Green
title	Supported

GetMaterialAttributes

Status

colour	Green
title	Supported

MakeMaterialAttributes

Status

colour	Green
title	Supported

SetMaterialAttributes

Status

colour	Green
title	Supported

Tabs Page

title	Math

Expression Name

Support

Abs

Status

colour	Green
title	Supported

Add

Status

colour	Green
title	Supported

AppendVector

Status

colour	Green
title	Supported

Arccosine

Status

colour	Green
title	Supported

ArccosineFast

Status


colour	Yellow
title	Partial

Arcsine

Status

colour	Green
title	Supported

ArcsineFast

Status


colour	Yellow
title	Partial

Arctangent

Status

colour	Green
title	Supported

Arctangent2

Status

colour	Green
title	Supported

Arctangent2fast

Status


colour	Yellow
title	Partial

ArctangentFast

Status


colour	Yellow
title	Partial

Ceil

Status

colour	Green
title	Supported

Clamp

Status

colour	Green
title	Supported

ComponentMask

Status

colour	Green
title	Supported

Cosine

Status

colour	Green
title	Supported

CrossProduct

Status

colour	Green
title	Supported

Divide

Status

colour	Green
title	Supported

DotProduct

Status

colour	Green
title	Supported

Floor

Status

colour	Green
title	Supported

Fmod

Status

colour	Green
title	Supported

Frac

Status

colour	Green
title	Supported

Status

colour	Green
title	Supported

LinearInterpolate

Status

colour	Green
title	Supported

Logarithm10

Status


colour	Grey
title	Not Supported

Logarithm2

Status

colour	Green
title	Supported

Max

Status

colour	Green
title	Supported

Min

Status

colour	Green
title	Supported

Multiply

Status

colour	Green
title	Supported

Normalize

Status

colour	Green
title	Supported

OneMinus

Status

colour	Green
title	Supported

Power

Status

colour	Green
title	Supported

Round

Status

colour	Green
title	Supported

Saturate

Status

colour	Green
title	Supported

Sign

Status

colour	Green
title	Supported

Sine

Status

colour	Green
title	Supported

SquareRoot

Status

colour	Green
title	Supported

Subtract

Status

colour	Green
title	Supported

Tangent

Status

colour	Green
title	Supported

Truncate

Status

colour	Green
title	Supported

Tabs Page

title	Parameters

Expression Name

Support

CollectionParameters

Status


colour	Grey
title	Not Supported

DynamicParameter

Status


colour	Grey
title	Not Supported

FontSampleParameter

Status


colour	Grey
title	Not Supported

ScalarParameter

Status

colour	Green
title	Supported

StaticBoolParameter

Status

colour	Green
title	Supported

StaticSwitchParameter

Status

colour	Green
title	Supported

StaticComponentMaskParameter

Status


colour	Grey
title	Not Supported

VectorParameter

Status

colour	Green
title	Supported

TextureObjectParameter

Status

colour	Green
title	Supported

TextureSampleParameter2D

Status

colour	Green
title	Supported

TextureSampleParameterSubUV

Status


colour	Grey
title	Not Supported

TextureSampleParameterCube

Status


colour	Grey
title	Not Supported

TextureSampleParameterMovie

Status


colour	Grey
title	Not Supported

Tabs Page

title	Particles

Expression Name

Support

DynamicParameter

Status


colour	Grey
title	Not Supported

ParticleColor

Status


colour	Grey
title	Not Supported

ParticleDirection

Status


colour	Grey
title	Not Supported

ParticleMacroUV

Status


colour	Grey
title	Not Supported

ParticleMotionBlurFade

Status


colour	Grey
title	Not Supported

ParticlePositionWS

Status


colour	Grey
title	Not Supported

ParticleRadius

Status


colour	Grey
title	Not Supported

ParticleRelativeTime

Status


colour	Grey
title	Not Supported

ParticleSize

Status


colour	Grey
title	Not Supported

ParticleSpeed

Status


colour	Grey
title	Not Supported

SphericalParticleOpacity

Status


colour	Grey
title	Not Supported

ParticleSubUV

Status


colour	Grey
title	Not Supported

Tabs Page

title	Terrain

Expression Name

Support

LanscapeLayerBlend

Status


colour	Grey
title	Not Supported

LandscapeLayerCoords

Status


colour	Grey
title	Not Supported

LandscapeLayerSwitch

Status


colour	Grey
title	Not Supported

LandscapeLayerWeight

Status


colour	Grey
title	Not Supported

LanscapeVisibilityMask

Status


colour	Grey
title	Not Supported

Tabs Page

title	Texture

Expression Name

Support

FontSample

Status


colour	Grey
title	Not Supported

SceneColor

Status


colour	Grey
title	Not Supported

SpriteTrextureSampler

Status


colour	Grey
title	Not Supported

TextureObject

Status

colour	Green
title	Supported

TextureSample

Status

colour	Green
title	Supported

TextureProperty

Status


colour	Grey
title	Not Supported

Tabs Page

title	Utility

Expression Name

Support

AntialiasedTextureMask

Status


colour	Grey
title	Not Supported

BlackBody

Status


colour	Grey
title	Not Supported

BumpOffset

Status

colour	Green
title	Supported

ConstantBiasScale

Status

colour	Green
title	Supported

DDX

Status


colour	Yellow
title	Partial

DDY

Status


colour	Yellow
title	Partial

DepthOfFieldFunction

Status


colour	Grey
title	Not Supported

Desaturation

Status

colour	Green
title	Supported

Distance

Status

colour	Green
title	Supported

DistanceFieldGradient

Status


colour	Grey
title	Not Supported

DistanceToNearestSurface

Status


colour	Grey
title	Not Supported

FeatureLevelSwitch

Status


colour	Grey
title	Not Supported

Fresnel

Status

colour	Green
title	Supported

GIReplace

Status


colour	Grey
title	Not Supported

LightmassReplace

Status


colour	Grey
title	Not Supported

Noise

Status


colour	Grey
title	Not Supported

PreviousFrameSwitch

Status


colour	Grey
title	Not Supported

QualitySwitch

Status


colour	Grey
title	Not Supported

RayTracingQualitySwitch

Status


colour	Yellow
title	Partial

RotateAboutAxis

Status

colour	Green
title	Supported

SphereMask

Status

colour	Green
title	Supported

Vector Noise

Status


colour	Grey
title	Not Supported

Tabs Page

title	VectorOps

Expression Name

Support

ActorPositionWS

Status


colour	Grey
title	Not Supported

CameraPositionWS

Status

colour	Green
title	Supported

CameraVectorWS

Status

colour	Green
title	Supported

DeriveNormalZ

Status


colour	Grey
title	Not Supported

LightVector

Status


colour	Grey
title	Not Supported

ObjectBounds

Status


colour	Grey
title	Not Supported

ObjectOrientation

Status


colour	Grey
title	Not Supported

ObjectPositionWS

Status

colour	Green
title	Supported

ParticlePositionWS

Status


colour	Grey
title	Not Supported

PixelNormalWS

Status

colour	Green
title	Supported

Pre-Skinned Local Normal

Status


colour	Grey
title	Not Supported

Pre-Skinned Local Position

Status


colour	Grey
title	Not Supported

ReflectionVectorWS

Status

colour	Green
title	Supported

Transform

Status

colour	Green
title	Supported

TransformPosition

Status


colour	Yellow
title	Partial

VertexNormalWS

Status

colour	Green
title	Supported

UI Text Box

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If the Coordinate Index in the TextureCoordinate node in a material is set to a certain value and the material is applied to a Static mesh that doesn't have a corresponding UV channel, then that mesh will not render correctly in V-Ray. For example, the Coordinate Index in a material that is applied to a static mesh is set to 3 but the mesh has only 2 UV channels then the render result will be inaccurate.

Supported Material Inputs, Blend Modes and Shading Models

Below are listed all inputs, Blend modes and Shading models in the Material Editor that are supported by V-Ray for Unreal.

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Inputs

Base Color

Status

colour	Green
title	Supported

Metallic

Status

colour	Green
title	Supported

Specular

Status

colour	Green
title	Supported

Roughness

Status

colour	Green
title	Supported

Emissive Color

Status

colour	Green
title	Supported

Opacity

Status

colour	Green
title	Supported

Opacity Mask

Status

colour	Green
title	Supported

Normal

Status

colour	Green
title	Supported

World Position Offset

Status


colour	Grey
title	Not Supported

World Displacement

Status


colour	Grey
title	Not Supported

Tessellation Multiplier

Status


colour	Grey
title	Not Supported

Subsurface Color

Status

colour	Green
title	Supported

Clear Coat

Status

colour	Green
title	Supported

Clear Coat Roughness

Status

colour	Green
title	Supported

Ambient Occlusion

Status


colour	Grey
title	Not Supported

Refraction

Status


colour	Grey
title	Not Supported

Pixel Depth Offset

Status


colour	Grey
title	Not Supported

Shading Model

Status


colour	Grey
title	Not Supported

ClearCoatBottomNormal

Status

colour	Green
title	Supported

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Blend Modes

Opaque

Status

colour	Green
title	Supported

Masked

Status

colour	Green
title	Supported

Translucent

Status

colour	Green
title	Supported

Additive

Status


colour	Grey
title	Not Supported

Modulate

Status


colour	Grey
title	Not Supported

Alpha Composite

Status

colour	Green
title	Supported

Align

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Expand

title	Click here to expand for screenshot of UI

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Shading Modes

Unlit

Status

colour	Green
title	Supported

Default Lit

Status

colour	Green
title	Supported

Subsurface

Status

colour	Green
title	Supported

Preintegrated Skin

Status


colour	Grey
title	Not Supported

Clear Coat

Status

colour	Green
title	Supported

Subsurface Profile

Status


colour	Grey
title	Not Supported

Two Sided Foliage

Status

colour	Green
title	Supported

Hair

Status


colour	Grey
title	Not Supported

Cloth

Status


colour	Grey
title	Not Supported

Eye

Status


colour	Grey
title	Not Supported

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Expand

title	Click here to expand for screenshot of UI

Content

Space Tools

Versions Compared

Old Version 18

New Version 19

Key

Overview

Supported Expressions

Supported Material Inputs, Blend Modes and Shading Models