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This page provides information about export .vrscene file with V-Ray for Unreal.

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Overview

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VRayScene allows for assets to be shared between all platforms that run V-Ray.

 
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UI Path

Exporting a .vrscene

A vrscene from the an Unreal project can be exported with in two ways:

V-Ray toolbar

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ІІV-Ray toolbar drop-downІІ > Export vrscene

 
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Exporting a .vrscene

A vrscene from the an Unreal project can be exported with in two ways:

V-Ray toolbar

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VRScene Name – Enables Specifies the export name of a the generated .vrscene file when the V-Ray render button is clicked.

Export VRScene Path – Directory where the .vrscene file is saved. Default directory is <ProjectPath>\Content 

Compress – Compresses geometric information thus making the resulting .vrscene file smaller.

(plus) NEW Export Selected Only – Exports only selected actors in the scene to a .vrscene file. Option will be ignored when Light Bake option is enabled.

Light Bake – Exports separate .vrscene files for every light map atlas.

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The number of generated .vrscenes depends on:

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  • Actor Light Map resolution
  • Atlas resolution
  • Actor count in the level
Expand
titleClick here for schematic view of atlas size and actor light map resolution

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When you export a .vrscene a .bat file is also created with the name specified in VRScene Name and in the directory set in Export VRScene Path. You can use the .bat file to render the exported .vrscene in standalone, outside of Unreal. Note that currently a .bat file will not be generated when Light Bake option is enabled and will not work for light bake atlas .vrscenes .



V-Ray Bake Settings

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Export VRScene – Enables the export of a .vrscene file when the V-Ray Bake  button is clicked.

Export VRScene Path – Directory where the .vrscene file is saved with the file name bake#.vrscene. Default directory is <Project_Path>

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Supported Features

 

Rendering and Light BakingCameras

Unreal

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  • Camera Actor - Transformations
  • Cine Camera Actor - Transformations
Geometry
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  • Static Meshes
  • Blueprint Actors with Static Meshes
  • Foliage
Lights
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  • Point Light - Intensity; Light Color; Intensity Units - Unitless, Candelas, Lumens; Source Radius; Temperature; Affects World; Cast Shadows; Use Inverse Squared Falloff; Specular Scale
  • Spot Light - Intensity; Light Color; Intensity Units - Unitless, Candelas, Lumens; Inner Cone Angle; Outer Cone Angle; Source Radius; Temperature; Affects World; Cast Shadows; Use Inverse Squared Falloff; Specular Scale; IES Texture
  • Rect Light - Intensity; Light Color; Intensity Units - Unitless, Candelas, Lumens; Source Width; Source Height; Temperature; Affects World; Cast Shadows
  • Directional Light - Intensity; Light Color; Temperature; Affects World; Cast Shadows; Light Source Angle

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Materials

Supported expressions:

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  • Constant
    • Constant
    • Constant2Vector
    • Constant3Vector
    • Constant4vector
    • Time
    • TwoSidedSign
    • VertexColor
    • ViewProperty
  • Coordinates
    • ObjectRadius
    • Panner
    • Rotator
    • ScreenPosition
    • TextureCoordinate
    • WorldPosition
  • Depth
    • PixelDepth
  • Functions
    • FunctionInput
    • FunctionOutput
    • MaterialFunctionCall
    • StaticBool
    • StaticSwitch
  • Material Attributes
    • BreakMaterialAttribute
    • GetMaterialAttributes
    • MakeMaterialAttribute
    • SetMaterialAttributes
  • Math
    • Abs
    • Add
    • AppendVector
    • Arccosine
    • ArccosineFast
    • Arcsine
    • ArcsineFast
    • Arctangent
    • Arctangent2
    • Arctangent2fast
    • ArctangentFast
    • 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
    •  RotateAboutAxis
    • SphereMask
  • VectorOps
    • CameraPositionWS
    • CameraVectorWS
    • ObjectPositionWS
    • PixelNormalWS
    • ReflectionVectorWS
    • Transform
    • TransformPosition
    • VertexNormalWS

Supported Inputs:

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  • Base Color
  • Metallic
  • Specular
  • Roughness
  • Emissive Color
  • Opacity
  • Opacity Mask
  • Normal
  • Subsurface Color
  • Clear Coat
  • Clear Coat Roughness
  • Clear Coat Bottom Normal

Supported Blend Modes:

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  • Opaque
  • Masked
  • Translucent
  • Alpha Composite

Supported Shading Modes:

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  • Unlit
  • Default Lit
  • Subsurface
  • Clear Coat
  • Two Sided Foliage

Supported Material Options

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  • Tangent Space Normal
Textures 

Texture with Compression Settings:

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  • Default
  • Normalmap
  • (plus) NEW - Masks
  • Grayscal
  • (plus) NEW - Displacementmap
  • HDR
  • (plus) NEW - Alpha
  • (plus) NEW - HDRCompressed

Texture Settings:

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  • Flip Green Channel

(plus) NEW - Adjustment Settings:

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  • (plus) NEW - Brightness
  • (plus) NEW - Brightness Curve
  • (plus) NEW - Vibrance
  • (plus) NEW - Saturation
  • (plus) NEW - RGBCurve
  • (plus) NEW - Hue

Textures with file format:

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  • .bmp
  • .png
  • .tga
  • .jpg
  • .hdr
Other
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  • Sequencer animation with Static Meshes
  • Project packaging/cooking into a standalone application
  • Unreal tone mapper and Post Processes  in viewport rendering
Rendering and Light BakingCameras
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  • VRayPhysicalCamera BP
    • Current Camera Settings - Sensor Width, Sensor Height; Focus Method; Manual Focus Distance; Current Focal Length
    • V-Ray Physical Camera Settings - Enable Exposure; 3ds max Compatible; Film Speed(ISO); Shutter Speed S^-1; F-number; White Balance, Reinhard Burn Value; Distortion Type; Amount; Near Clip Plane
Lights
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  • VRaySunAndSky BP - On, Azimuth, Elevation, Turbidity, Ozone, Intensity Multiplier, Size Multiplier, Set for Light Bake, Affect Diffuse, Affect Specular
    VRayLightDome BP - On, Use Dome Tex, Dome Tex, Dome Tex Rotation, Dome Color, Intensity, Invisible, Set for Light Bake,  Dome Tex Resolution, Affect Diffuse, Affect Specular, Affect Reflections
  • VRayLightRect BP - Enable, Is Disc, Length/Radius, Width, Multiplier, Cast Shadows, Color, Directional, Invisible, Set for Light Bake, Affect Diffuse, Affect Specular,   Affect Reflections
Materials
Material Instances, V-Ray Material Instances with V-Ray Parent Materials:

 

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  • VRayMtl
  • VRayCarpaintUberMtl
  • VRayPBRMtl
Render Elements
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  • Denoiser (NVidia Ai, V-Ray)
  • Background, GI, Lighting, Reflection, Refraction, Specular, Self Illumination, Sub Surface Scattering
  • Diffuse Filter, Reflection Filter, Refraction Filter, Shadows
  • RenderID
  • Normals, Bump Normals, Sampler Info, Velocity, ZDepth
  • Light Select
  • Sample Rate, Unclamped Color, Noise Level
Light Baking Fancy Bullets
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  • Light bake with V-Ray Bake
  • Exporting Lightmaps
    • Importing Lightmaps