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Documentation

V-Ray for Unreal

© Bertrand Benoit

Table of Contents

Overview
Supported Features
- Import and Rendering
Footnotes

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Supported Features

Created by Aleksandar Atanasov, last modified on May 27, 2019

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This page provides a table of currently supported features by V-Ray for Unreal.

Table of Contents

Overview
Supported Features
- Import and Rendering
Footnotes

Overview

These features are supported by V-Ray for Unreal. Currently supported versions of Unreal Engine are 4.19.2, 4.20.3 and 4.21.2.

For best results when importing vrscene files make sure your scenes are authored and optimized for V-Ray GPU Next or V-Ray GPU 3.6.

All supported features from Unreal Engine are listed in the Rendering table below.

Only Render nodes for V-Ray Next are supported.

V-Ray for Unreal only supports normal maps in tangent space.

V-Ray for Unreal uses only the V-Ray Hybrid engine.

Supported Features

Import and Rendering

Importing vrscene files
Cameras	3ds Max Physical Camera: Film/Sensor - Preset; Width Lens - Focal Length; Specify FOV; Aperture; Custom Focus Distance Shutter - Type 1/seconds; Duration Exposure Gain - Manual White Balance Custom
Cameras	VRay Physical Camera Focus Distance; Target Distance; Field of view; Film gate; Focal length; Film Speed (ISO); F-number; Shutter speed(s^-1); Exposure; Custom White balance
Geometry	Triangle meshes VRayProxy - initial support, no animated meshes UV channels 0, 1, 2, 3 Initial support for displaced/smoothed meshes
Lights	Standard Spotlight - Light - On/Off; Shadows - On/Off; Multiplier; Decay type - None, Inverse Square; Hotspot; Falloff Omni - Light - On/Off; Shadows - On/Off; Multiplier; Decay type - None, Inverse Square Direct - Light - On/Off; Shadows - On/Off; Multiplier Photometric Photometric web - Light - On/Off; Shadows - On/Off; Photometric Web profile; Filter Color; Intensity in lumens V-Ray Dome light - Light - On/Off; Units - Default image; Multiplier; Color; Texture Sphere light - Light - On/Off; Color; Temperature; Units - Default image, Luminous power; Multiplier; Cast Shadows - On/Off Rectangle light - Enabled - On/Off; Light color; Temperature; Intensity multiplier; Units - Default image, Lumens; NEW Directional; Shadows - On/Off IES light - Enabled - On/Off; IES file; Cast shadows - On/Off; Color; Temperature; Intensity type - lumens Sun - Enabled - On/Off; Turbidity; Sky model - Hosek et al.
Materials	VRayMtl VRay2SidedMtl VRayBumpMtl VRayLightMtl
Textures	Bitmap VRayHDRI VRayNormalMap
Textures	Textures with file format: .bmp .png .tga .jpg .hdr
Other	3ds Max Exposure Control VRay Exposure Control

Importing vrscene files
Cameras	VRay Physical Camera Focus Distance; Target Distance; Field of view; Film gate; Focal length; Film Speed (ISO); F-number; Shutter speed(s^-1); Exposure; Custom White balance
Geometry	Triangle meshes VRayProxy - initial support, no animated meshes UV channels 0, 1, 2, 3 Initial support for displaced/smoothed meshes
Lights	V-Ray Dome light - Light - On/Off; Units - Default image; Multiplier; Color; Texture Sphere light - Light - On/Off; Color; Temperature; Units - Default image, Luminous power; Multiplier; Cast Shadows - On/Off Rectangle light - Enabled - On/Off; Light color; Temperature; Intensity multiplier; Units - Default image, Lumens; NEW Directional; Shadows - On/Off IES light - Enabled - On/Off; IES file; Cast shadows - On/Off; Color; Temperature; Intensity type - lumens Sun - Enabled - On/Off; Turbidity; Sky model - Hosek et al.
Materials	VRayMtl VRay2SidedMtl VRayBumpMtl VRayLightMtl
Textures	File Gamma
Textures	Textures with file format: .bmp .png .tga .jpg .hdr
Other	VRay Exposure Control

Rendering
Cameras	Unreal Camera Actor - Transformations Cine Camera Actor - Transformations
Geometry	Static Meshes Blueprint Actors with Static Meshes Foliage
Lights	Point Light - Intensity; Light Color; Intensity Units - Unitless, Candelas, Lumens; Source Radius; Affects World; Cast Shadows; Use Inverse Squared Falloff; NEW Specular Scale Spot Light - Intensity; Light Color; Intensity Units - Unitless, Candelas, Lumens; Inner Cone Angle; Outer Cone Angle; Source Radius, Affects World; Cast Shadows; Use Inverse Squared Falloff; NEW Specular Scale; IES Texture Rect Light - Intensity; Light Color; Intensity Units - Unitless, Candelas, Lumens; Source Width; Source Height; Affects World; Cast Shadows Directional Light - Intensity; Light Color; Affects World; Cast Shadows; Light Source Angle
Materials	Supported expressions: Constant Constant Constant2Vector Constant3Vector Constant4vector ViewProperty Coordinates Panner Rotator ScreenPosition TextureCoordinate WorldPosition Depth NEW PixelDepth Functions FunctionInput FunctionOutput MaterialFunctionCall StaticBool StaticSwitch Material Attributes BreakMaterialAttribute MakeMaterialAttribute Math Abs Add AppendVector Arccosine Arcsine Arctangent Arctangent2 Ceil Clamp ComponentMask Cosine CrossProduct Divide DotProduct Floor Fmod Frac If LinearInterpolate Logarithm2 Max Min Multiply Normalize OneMinus Power Round Saturate Sign Sine SquareRoot Subtract Tangent Truncate Parameters ScalarParameter StaticBoolParameter StaticSwitchParameter VectorParameter TextureObjectParameter TextureSample2DParameter Texture TextureObject TextureSample Utilities BumpOffset ConstantBiasScale DDX DDY Desaturate Distance Fresnel SphereMask VectorOps CameraPositionWS CameraVectorWS PixelNormalWS ReflectionVectorWS Transform VertexNormalWS
	Supported Inputs: Base Color Metallic Specular Roughness Emissive Color Opacity Opacity Mask Normal NEW Subsurface Color Clear Coat Clear Coat Roughness Clear Coat Bottom Normal
	Supported Blend Modes: Opaque Masked Translucent Alpha Composite
	Supported Shading Modes: Unlit Default Lit NEW Subsurface Clear Coat NEW Two Sided Foliage
	Supported Material Options Tangent Space Normal
Textures	Texture with Compression Settings: Default Normalmap Grayscale HDR
Textures	Textures with file format: .bmp .png .tga .jpg .hdr
Other	Sequencer animation with Static Meshes Project packaging/cooking into a standalone application Unreal tone mapper and Post Processes in viewport rendering

Rendering
Cameras	VRayPhysicalCamera BP Current Camera Settings - Sensor Width, Sensor Height; Focus Method; Manual Focus Distance; Current Focal Length V-Ray Physical Camera Settings - 3ds max Compatible; Enable Exposure; Film Speed(ISO); Shutter Speed S^-1; F-number; White Balance Color Mapping - Reinhard Burn Value
Lights	VRaySunAndSky BP - On, Azimuth, Elevation, Turbidity, Ozone, Intensity Multiplier, Size Multiplier, Set for Light Bake, NEW Affect Diffuse, NEW Affect Specular VRayLightDome BP - On, Use Dome Tex, Dome Tex, Dome Tex Rotation, Dome Color, Intensity, Invisible, Set for Light Bake, Dome Tex Resolution, NEW Affect Diffuse, NEW Affect Specular, NEW Affect Reflections VRayLightRect BP - Enable, Is Disc, Length/Radius, Width, Multiplier, Cast Shadows, Color, NEW Directional, Invisible, Set for Light Bake, NEW Affect Diffuse, NEW Affect Specular, NEW Affect Reflections
Materials	Material Instances, V-Ray Material Instances with V-Ray Parent Materials: VRayMtl VRayCarpaintUberMtl VRayPBRMtl
Render Elements	Denoiser (NVidia Ai, V-Ray) Background, GI, Lighting, Reflection, Refraction, Specular, Self Illumination, Sub Surface Scattering ¹ Diffuse Filter, Reflection Filter, Refraction Filter, Shadows RenderID Normals, Bump Normals, Sampler Info, Velocity, ZDepth Light Select Sample Rate, Unclamped Color, Noise Level
Baking	Light bake with V-Ray Bake
Other	Viewport Rendering

Footnotes

1 – Only for materials that have "Render materials from .vrscene" option enabled