V-Ray 6

Build 6.20.05

Official release, Update 2

Date - Feb 15, 2024

Download V-Ray for Houdini

New features

V-Ray

Add new instancing backend for lower time to first pixel and optimized scene size
Implement multithreaded "Compiling geometry" step for polygon meshes
Add Houdini 20: GCC 11 Linux builds support
Add support for Houdini 20.0.590 production build
Add support for Houdini 20.0.547 production build
Update V-Ray Core to 6.2
Make single installer for all supported minor HDK builds, per major HDK version
Image File VOP "File Path" parameter promotion
Add "Save Cryptomattes Separately" toggle under the Image tab of the V-Ray Renderer ROP
Add V-Ray Decal Displacement parameters
Add ability to assign V-Ray Object Properties at the SOP level
Add support for V-Ray Material Metalness and Roughness AOVs
Add support for the "Preserve Geometry Borders" toggle for Subdivision
Add support for Light Select for Environment Fog with texture attached to it
Add support for Houdini's native Parameter VOP
Add support for positive and negative axis textures for the Triplanar texture
Add "Path Guiding" for Light Cache GI to the V-Ray Render Settings
Add "Adaptivity Clamp" option to the V-Ray Render Settings
Add "Directional Strength" parameter for V-Ray Rect Light
Add "Adaptivity Prepass" parameter for Brute Force GI
Add custom OCIO control for providing a config file under the Units tab of the V-Ray Render Settings
Add Phase Function control for the V-Ray Fog Effect
Add support for V-Ray crease data with subdivision through the "creaseweight" attribute
Add support for shader overrides based on "scene_name" for Rayserver Instancer
Add support for subnet connector VOP
Add Sheen, Sheen Glossiness, Coat and Coat Glossiness AOV support
Add "Light Select Matte" toggle for isolating shadows over matte/holdout surfaces with Light Select AOV
Add "Direct Diffuse Shadow" and "Direct Specular Shadow" modes for Light Select AOV
Support for VRScene unpacking with RenderStats, Wrapper or Multi ID material export from 3ds Max
Add Volume Shader Velocity Smoothing "Threshold" and "Similarity" options
Export the V-Ray Material SSS to the SSS render element instead of Refraction
Add support for SOP level V-Ray Object Properties for packed disk primitive VDBs
Add "Min.Pixel Size" render setting to support very small lights that are far from the camera
Add support for Cryptomatte by Attribute for alembic primitives and string string attributes placed over the packed alembic primitive
Add "Bump Delta Scale" control for the V-Ray Material
Add support for Renderer ROP Material Overrides for Volumetrics
Add N attribute sampling support through User Color VOP

Solaris

Add support for Resumable rendering
Add support for the V-Ray Toon environment effect through the Single VOP and the Render Geometry Settings LOP
Add support for Unpacking nested instances to improve Time to First Pixel - through the Render Settings LOP
Implement Python Post Translate support through the Render Settings LOP
Add support for VDB vector fields for Smoke Color
Solaris: add support for vec3 and float3 volumes for smoke color
Solaris: аdd support for live/native Houdini volumes
Solaris: Add support for V-Ray Clipper through the Render Geometry Settings LOP
Solaris: Add support for OSL texture and material
Solaris: Add support for Trace Sets
Solaris: Use V-Ray Camera settings for viewport IPR
Solaris: Instance detection to reduce time to first pixel and RAM used for rendering
Solaris: Added COP (/img) nodes support
Solaris: Write denoiser generated render elements through Hydra for standalone denoising post-render
Solaris: Support for Cryptomatte primvars for instanced particles
Solaris: Support for Cryptomatte primvars for instanced hair
Solaris: Initial implementation of V-Ray light filters
Solaris: Faster output for beauty render element through LPE (C.*)
Solaris: Add support for Light barn door parameters

Fur

Expose V-Ray Fur "Lock to Surface" and "Reference Frame" for "Per Area" distribution type
Add support for Per Area distribution type for V-Ray Fur with live geometry
Allow for separate material assignment for V-Ray Fur when using Displaced geometry as the source

GPU

Add CUDA/RTX support for the Random VOP
GPU: Add support for object properties reflection/refraction mask in RTX mode
Add GPU support for Mtlx Image's Signature type

Modified features

Solaris: Add UsdUVTexture scale/bias support
Solaris: Ensure smooth normals on crowd caches
Cosmos: use space_multiplier for proper scaling of imported objects
Set Cosmos asset materials using a Material SOP instead of assigning the material at the object level
Expose the "Scale Opacity by Scene Units" option of the Volume Shader so Smoke Alpha can be based on scene units rather than voxel count
Hide the old Hair3 material from the GUI
Add missing "Position Across Strand" output for the V-Ray Hair Sampler
Show the"Use Focus Distance from Camera" parameter for the Depth of Field settings of the V-Ray Renderer ROP
Expose the UV Bercon Variance Offset, Size and Angle as textureable parameters
Enable IPR info logging by default
Specified VFB History folder should be automatically created if not present on disk
Combine Light materials and Lights with duplicate names in a single element when using Light Mix in "Instanced Lights" mode
Solaris: Do not clamp velocity by default for Velocity AOV
Apply Enmesh from Cosmos import on all selected object nodes
Rendering noise pattern may remain the same for a few frames even with "animated noise pattern" option enabled
Ability to promote parameters for textures in VOP context
Add support for automatic UV channel handling for VRScene materials from Houdini to 3ds Max
Solaris: Speed up translation of V-Ray shaders
Solaris: Improved viewport volume speed
USD: Add standalone V-Ray 6 builds
Set /obj V-Ray light node shape to 'light' and color to yellow on creation
Vantage: Instanced geometry is not loaded from live link to Vantage
Allow post translate scripts to change VFB settings and layers

Bug fixes

Solaris: toggling control on one of the Volumetrics settings triggers the VFB
LightSelect : shadow select modes are missing in Type dropdown menu
Solaris/USD : "Use Blend Input" of TexFalloff breaks the IPR
Solaris: TexFalloff is not updating in IPR
Solaris: Light linker does not trigger an IPR update
Solaris/USD: Light Linker does not respect instances
Solaris: Render hair and smooth normals on Crowd assets as Karma does
Solaris: TexSoftbox ignores vignette
Solaris: Light Linker does not respect include/exclude when subobjects are used
Solaris: Rect Light has wrong control parm definition for directional_strength
Solaris: Error when trying to create a V-Ray Standard Render Vars LOP
Solaris: Light Filters go missing in Viewport rendering when changing the node display flag
Crash when rendering multiple hair systems with with different time/geometry samples
Installer button for "Help make V-Ray better" is missing
Installer will hang if you run the V-Ray installation while Houdini is open
Solaris: Crash with the p_ref AOV
Solaris: Cylinder light flickers on every frame
Solaris: V-Ray light filters have stopped working
MaterialX: MtlX Mix VOP in "Surface Shader" mode has no effect
Very small lights will flicker or completely disappear from final render
Solaris: when no lights are present in /stage, a default light with very high intensity is generated for husk with Houdini 20.0.506
Houdini 20: V-Ray Material builder is not shown in the menus by default
MtlX: UVtiling and UVoffset parameters of MtlX Tiled Image are not working with V-Ray
Volumes in Volumetric Geometry mode disappear when object level transform is modified
Hang on sequence render end on Linux with hython and volumes when passing a python file with a list of Houdini files to render
Hang when rendering volumes with Motion Blur starting Nov. 23, 2023
Solaris: Discrepancy between Production and Interactive when rendering volumes
Aperture Offset with Data Window doesn't work
Render Region in Solaris is wrong in Houdini 20
Environment fog container renders empty when Dome Light shadows are enabled
Hair crash/hang when there are repeating vertices on the same hair strand
"Mix. Map" is always exported and used for V-Ray Mix texture, making the "Mix Amount" parameter redundant
Wrong export and rendering for UV Projection for Solaris and vanilla Houdini
Compiling geometry in V-Ray Standalone with specific scene takes high amount of time
Solaris/USD : MtlX Geometry Property Value has stopped working
Enabling the "W Coord" for Hair will cause the Z component of custom attributes to be overridden when read with UserColor VOP
Solaris/USD : Custom primvars have stopped working with the latest nightly builds
Solaris/USD : Instanced geometry is not showing in Viewport render with the latest nightly build
Solaris/USD : Wrong color for V-Ray Toon effect
Solaris/USD : Light material's "Double-Sided" and "Emit on Back Side" options have no effect with the latest nightly build
Solaris/USD : expose "Occlude Lights" parameter for Rectangle, Disc and Sphere lights
Different displacement on Linux and Windows on a triangle fan with a degenerate triangle
Mac OS: QT errors when rendering with Husk
Ocean Spectra's pointmask doesn't work correctly when the grid is offset
Solaris: Artifacts in Noise Level AOV when rendering through Husk using the Bucket Sampler
Blank Velocity pass when Displacement is enabled
Solaris: Motion Blur and Depth of Field are disabled by default for Husk
Scanned material: file parameter has wrong value
Disabling the Render Stats "Cast Shadows" option has no effect for self-shadowing when used in a Material Override shading network
MacOS: Immediate crash on render and/or VRScene export
Solaris/USD : attenuation parameters for mesh light have wrong names
Ocean Spectra "cusp" output has varying intensity during animation rendering causing a flickering effect
Cosmos: textures of cosmos assets not rendered starting with builds from July 12
Solaris/USD: wrong bitmap path when <frame04> in file name
Export Camera Screen Window X/Y parameter for each frame in the VRScene file
Inability to choose In / Out Color Space Parameters with aces-v1.3_ocio-v2.1 config
Ocean Spectra Wave Instancing - crash when "Radius" option is disabled
Ocean Spectra Wave Instancing artifacts when instance point radius overlaps for multiple points
Solaris: Camera Aperture Offsets are ignored when rendering through Husk with V-Ray
Significant rendering slowdown with Ocean Spectra displacement between Core 6.0 and 6.1
The Sun Light Clouds "Seed" parameter should default to "0" instead of "1024"
The first render after disabling "Override Camera Resolution" on the Renderer ROP is cropped incorrectly
Resolved unnecessary object cooking
Wrong alembic frame is loaded when using a looping sequence with Motion Blur enabled
Missing export for nodes inside Subnet VOPs when using a Parameter VOP to create the I/O sockets
Solaris: missing primvar export when Reference LOP "Make Instanceable" is enabled
Velocity AOV output is wrong when using a Digital Asset for the Render Elements parameter on the V-Ray Renderer ROP
Changes to Log Verbosity aren't being saved when changing it after ending IPR session
Support for the Alembic file format for V-Ray Fur
Render Elements are not exported separately when Write Deep Data is enabled
Animated Focus Distance parameter is not exported when Physical Camera is not present
Update V-Ray Fur distribution slider range
Alembic Velocity blur bounds are computed based on geometry time samples blur
Support for Displaced Geometry for V-Ray Fur
Solaris: IPR is not updated on shader parameters change
Wrong V-Ray Material SSS with Rayserver Instancer enabled
Solaris: V-Ray Dome Camera FOV is not correctly exported
Solaris: Materials always force create a preview shader
Solaris: Translate promoted parameters to the main shader primitive
SOP level material assignments are ignored for instanced Alembic primitives using Rayserver Instancer
LightMix: all materials are rendered as AOV when Light groups are Instanced Lights
V-Ray About Window is too big
Data conversion for socket type "color" to socket type "vector" fails
LPE: wrong contribution when light LPE tag is used
Solaris: V-Ray Toon material is not working
EULA: installer does not save ".eulaAcceptedXXXXXX..." file , so second acceptance is required in Houdini
Solaris: VFB may be not shown for husk
Solaris: Missing geometries with instancing detection on Linux
Plastic Translucent Cosmos Materials renders incorrectly
Textures' parameters do not show up in Houdini 19.5.605 on OSX
Wrong parameter label for Transform Matrix Rotation Order control
Wrong displacement amount exported for V-Ray Decal
V-Ray Renderer "Show Frame Buffer" button does not work until V-Ray is initialized through a render
Bump does not work when Attributes are added to the Triplanar
Solaris: Match multiple texture user tags
Object Properties visibility settings have no effect for very small objects when Subdivision is applied
Cast Shadows option from V-Ray Object Properties does not work with static geometry when a material is assigned
Solaris: vector displacement options are not exported
Solaris: export float AOVs for Denoiser "defocusAmount" and "noiseLevel"
Very slow forced materials translation
Mesh Light disappears on second frame of a sequence render in GUI rendering only
3ds Max VRMat import of VRScene material coming from Houdini has no UV mapping
Solaris: Duplicated frames when rendering specific USD with Husk
Velocity render element with motion blur disabled causes triplanar offset
Post Translate script effect is lost during IPR for Physical Camera, if changes to the camera parameters are made
Solaris: Render Region is sometimes not updated correctly until a camera move
Crash or Freeze when scrubbing the timeline while IPR is active
Environment Fog is missing from Light Select AOV if the fog is textured
GPU: Matte Shadows is wrong with Rect lights when Shadow Bias is very low
Slow export for VRScene files when batch rendering
Solaris: Performance issues on some configurations with certain Ocean setup
Solaris: V-Ray Sampler bumpNormals output is wrong for rayserver
Solaris: V-Ray Sampler random_by_polyShell does not work with rayserver instancer
Solaris: Add support for Velocity AOV with disabled motion blur
Solaris: Cryptomatte for Material Name and Material Path modes has wrong manifest
Pack Scene command throws an error with latest builds
Popping alembic transform when motion blur is enabled with Duration of 1.0 and Interval Center of 0.0 when exporting single VRScene for entire sequence length
Solaris: Discrepancy in Mapping compared to V-Ray for Maya with a provided .USD file
Specific tiled EXR file returns black color when applied as texture due to only channel present in file being rgb.R
LPE light tags are not treated as events which causes wrong output for tagged lights
GI from all lights is included in Light Select when using LPEs with Light Cache instead of Brute Force
Ocean Spectra texture with motion-blur produces slightly different displacement than without motion-blur
Solaris: display flag change makes all the geometry go transparent
Wrong transforms in Hydra with specific USD scene
IPR: Decal displacement is not handled by IPR
Light Material: texture as color multiplier produces different result than direct value
LightInstancer: Add support for instancing of textured lights
Primary visibility for geometry with overlapping parts cuts to alpha
V-Ray Enmesh: add support for alembic as source and reference objects
V-Ray Enmesh: add support for packed source and reference objects
Installer: prevent installing over running V-Ray if Houdini or Husk are running
Instanced objects transform is ignored when using Light material with Direct Illumination
Solaris: Displacement VOP parameter "Use Global Settings" is ignored
Color Correct VOP is not exported to .vrscene when GPU is chosen
High memory usage and geometry compile time when using Alembic with instanced shapes instead of vrmesh
MaterialX Color Ramp has wrong output when used with a Geometry Property Value sampling the UVs of the geometry
Solaris empty viewport when using Distributed Rendering
VRScene Material Import fails due to missing plugins: MultiplyDivide and PlusMinusAverage
Solaris: Changing the material connected to the output node of a V-Ray Material Builder VOP does not cause an update
VRayDirt's "Ignore Self Occlusion" does not work
Solaris - "Use" options for SettingsEnvironment from Dome Light for GI/Reflect/Refract/Secondary Matte are not used
Standalone: illumination masks exported from VFH not rendered in standalone
Incorrect motion-blurred displacement when expansion type is dynamic
Light Textures - <frame> token is exported in the file path instead of evaluating the expression
Deadline: ${FBATCH} is not evaluated correctly
Incorrect displacement for moving objects motion-blurred with geom_samples >= 3
Crowd: Smaller values of Random Clip Offset lead to wrong render results
Add OCIO to color space menu
VFB - using an EXR as Background image with "As Foreground" enabled causes the image to go black
VFB - do not tint RGB channels when displaying them isolated
IPR: Constant updates for volumes when changing shader params if Motion Blur On and rendering the last file in the VDB sequence
Solaris: custom volume used for smoke color is not rendered correctly
Square artifacts on using Adaptive Dome Light on GPU
Crowd: Missing delay in animation when rendering the whole sequence compared to smaller frame ranges
Wrong applying and mapping of imported via .vrscene materials
Wrong mapping after Unpacking to Polygons a .vrscene export from 3dsMax
Crowd: Discrepancy in animation result when rendering sequence and per frame in a specific scene - missing agents
Wrong material assignments when using animated switch node and uploading to Chaos Cloud
Solaris: options in Display Options > Renderer are not handled
Solaris: float to color automatic conversion does not work
Missing texture animation export for particular scene on first export, if no GUI render is initiated
Solaris: crash when shader has wrong connection
Add native support of light labels in the LPE manager
Ocean surface sometimes differs from the one in Houdini
Animated shader parameters are not exported for static meshes
Add support for RGBA Combine VOP for GPU
Displacement via V-Ray TexTriPlanar results in holes in the geometry with specific scene
Triangular artifacts on packed .abc when Bitmap Filtering type is not set to None or Nearest
Immediate crash when Denoiser and Volume Grid shader with the Volumetric Z-Depth parameter set to 'Separate V-Ray Element' is added on volumes
Hang after render of packed geometry is finished and when exporting .vrscene
Lighting discrepancy between CPU and GPU results when Direct Light is used with Intensity higher than 1
Enable Probabilistic Volumetrics by default
Empty About V-Ray window
V-Ray Clipper does not work for Lights
Mesh lights are clipped by V-Ray clipper even when "Clip Lights Geometry" is disabled
Falloff Curve is faulty set to Constant interpolation when TexFalloff texture is unpacked from an imported .vrscene file
Unpacking to polygons provokes error and crash with a specific .vrscene
VFB2 resizes by itself on render if the layer panel is collapsed
VFB constantly loses focus on OSX and gets hidden behind the main Houdini window
Disable light materials option of the V-Ray Renderer has stopped working
Ignored ROP parameters when changing camera to animated one
Failed to create node for plugin TexBezierCurveColor when unpacking a vrscene from 3ds Max
Attributes are not correctly interpolated for geometry with OpenSubdiv applied
V-Ray ROP inside an HDA is not handling referenced parm when HDA is locked
Light Instancer with 100k lights failed to render on Chaos Cloud
Textures assigned through image file path tokens referencing a string attribute are ignored when rendering on the Chaos Cloud
Hang or crash when assigning a COP network as texture during IPR on OSX
Alembic with baked shop_materialpath loses its material assignment when subdivision is applied
UV Channel Named exports UVWGenProjection when used directly in ImageFile
Wrong results for Normals and BumpNormals AOVs when rendering with GPU
Environment Fog is missing in Light Select element when Deep Output is enabled
Preview of .vrscene with many proxies is very slow - add proxy preview type and cache data in preview
Textures provided to OSL Texture as input are not evaluated
VRScene viewport preview is broken on Windows
VFB gets smaller and smaller every time it shows
Difference in refractive objects rendering between CPU, IPR and CUDA rendering.
Geometry node's Render>Geometry>Point scale parameter is not considered when rendering packed alembics
The position of an animated camera is not updated when changing the timeline frame during an IPR session
Crash in a specific scene with adaptive lights
Crash when rendering particular vrscene with Standalone on Linux
Forced hidden objects are not rendered
VFB disappears when deselecting the Houdini window on Linux
IPR not updating copied instances
Switch with expression is not updated in IPR
Channel Reference in rendered image name is not evaluated correctly
Hang when changing resolution in VFB IPR
Mesh and Hair merged in the same object breaks material assignments
Creating lights and geometry during IPR leads to some light include/exclude issues
IPR not handling object level transformations with expression
Cryptomatte by attribute is not working on crowds
IPR - first created light is not disabling the default one
IPR is not always updating regular mesh copied to simulated points
Crash to desktop when mesh geo is switched to a packed one
IPR not handling SOP transforms
Houdini Digital Asset crash with "V-Ray Environment" or "V-Ray Render Elements"
Crash in VFB when switching between images in the History panel
Freeze with specific user scene by trying to select nodes on first IPR run
Crash when attempting to import a Cosmos asset
Crash in standalone sequence render of volumes from a single VRScene
Crash when changing MaterialX Image VOP's "Signature" parameter back and forth
Crash on export when particles with velocity are present in the scene
Crash when rendering with instanced lights and using LPEs
IPR hang if Render Node license is not present
IPR: crash on exit after an IPR session
Geometry compilation fails for specific Alembic file with Displacement assigned to it
Crash on exiting Stage/Houdini when a render is initiated in both Solaris and Regular
Hang when attempting to import a specific VRScene containing instanced alembics
OSL: Crash when loading a particular OSL file
Crash in IPR when modifying the render region while scene changes are synced
Solaris: crash when changing the render flag from MaterialX to a V-Rray Material Library LOP
Setting "Screen Window Size" to negative during IPR crashes V-Ray & Houdini
Solaris: Crash when enabling than disabling "instancable" parameter of Configure Primitive LOP
NUMA Standalone render fails in scene with a lot of Alembic files that have a large number of attributes
Crash on last alembic frame export when motion blur is enabled and using per-frame alembic files
Crash when Reflection Glossiness is present before Light Mix element in AOVs channels container
Crash with Light Instancer and 250K lights
In a newly created blank scene using certain python code provokes a crash
Solaris: Immediate GPU crash after using Instancer
Crash when importing materials from .vrscene
Exception in Core when using frag file in a GLSL Texture as Extra Texture AOV
Crash after rendering with IPR after production render with Light Mix in the scene
Alembic: Crash with polygon with 1 vertex
GPU crash with a specific setup including V-Ray UVW Explicit and Bercon Noise
Crash or Hang when rendering a sequence with Phoenix Foam Shader assigned to particles
Crash when enabling matte/shadow object properties options while GPU IPR is running
Crash to Desktop if Volume Grid Shader is copied during an IPR session
Animated SettingsOutput "img_file" and "img_dir" can't be overridden with -parameterOverride
Export the smoke volume to PhxShaderCache even if rendering of smoke is disabled to ensure the transform is inherited from the smoke field
Solaris: displacement is not updated for changes to the input shading graph

Build 6.10.09

Official Release, Update 1

Date - June 12, 2023

New features

Chaos Cosmos

Add support for Chaos Cosmos Enmesh assets

Cloud

Add V-Ray Sun Procedural Clouds

Exporter

Export sphere primitive as GeomPerfectSphere for V-Ray 6

GPU

V-Ray GPU Texture Compression
V-Ray GPU - Mesh Mode support for V-Ray Clipper

Materials

Add Volume Shader Phase Function parameters
Update V-Ray Material

OSX

Add support for Cosmos on OSX and Linux

Solaris

Add support for the Phoenix Particle Shader
Add V-Ray profiler support in Solaris

Textures

Chaos HDRI Import - link the texture UV generator "Horizontal Rotation" to the parent Dome Light's Rotate Y

V-Ray

Add Finite Dome parameters
V-Ray Profiler Improvements
Houdini: Add NVidia AI Denoiser Upscaling and Panorama options for Denoiser

Solaris

MaterialX

Emissive Materials in Light Select and Light Mix
Light Mix "To Scene" button has no effect for BRDFLight materials

Solaris

RenderVar LOP - expose extraTex "force_32_bit_output" in V-Ray Tab if sourceType is primvar
Support for Cryptomatte primvars from unpacked instancers
Add PhxShaderSim::scene_name export when volume shader is in volumetric mode for Cryptomatte
Faster output for beauty (C.*) LPE render element
Add Hair Width Multiplier option to Render Geometry Settings LOP
Add an option whether to use reference points or not
Add beginning forward slash for Cryptomatte Node Path output
Use primvars from prototypes instead of instancer template points when available
Support for Cryptomatte primvars for instanced particles
Support for Cryptomatte primvars for instanced hair
Slow translation of V-Ray shaders
Displacement - override settings globally not working
Fixed - Displacment VOP parameter "Use Global Settings" is ignored
Add overscan support
Fixed - Dome Light Finite Dome options missing in UI
Fixed - RenderVar sampler:pointReference not rendered for hair
Fixed - Respect USD Texture Gamma control in Solaris
Hydra: Export only used primvars
Fixed - Fast movements in the V-Ray scene view are showing only the initial and final positions of the objects
Fixed - Black zDepth when using specific settings
Always export Probabilistic Volumes controls to SettingsOptions or update plugin default to enabled
Fixed - Wrong render when Data Window NDC of RenderSetings LOP has different values for minX/Y or maxX/Y
Fixed - No AOV output starting with nightlies from Jan 09 2023
Fixed - Wrong result when using nested instances with Retime Instance LOP
Fixed - Wrong color mapping for textures coming from Maya due to export of color_space instead of transfer_function for BitmapBuffer plugin
Fixed - Adding primvar aov causes hair width value to be exported divided by 2
Fixed - Render is stretched when using overscan
Fixed - Pixel shift when overscan or regionrender
Fixed - Visibility properties has stopped working on meshes since january27
Fixed - Velocity AOV with disabled motion blur
Fixed - Velocity and interval center
Fixed - Domelight intensity - wrong expression
Fixed - TexSampler::random_by_polyShell does not work with rayserver
Fixed - Instanced objects Cryptomatte for Material Name and Material Path modes has wrong manifest
Fixed - Render Region is sometimes not updated correctly until a camera move is made
Fixed - Transform applied to volumes used as prototypes is ignored for instances
Fixed - Default Color for Image File VOP has no effect
Fixed - Empty Deep Output file path causes V-Ray to fail saving a rendered image
Fixed - GPU render settings are not exported
Fixed - No motion blur for lop level animated object
Fixed - Wrong render region with physical camera in Solaris
Fixed - OSL: Missing input parameters
Fixed - Curves and ramps in VolumeGrid Shader are not translated
Fixed - Smoke volume does not have color
Fixed - Instances has no moblur with particular scene
Fixed - Transform of a single instanceable volume primitive is ignored
Fixed - Clicking the render region tool "Clear Render Region" button with Physical Camera enabled causes wrong camera transform
Fixed - Parts of instanced geometry go missing randomly with specific scene on Linux
Fixed - Normal bump not rendered
Fixed - Vector displacement options are not exported
Fixed - "Invalid property name error.!" for a lot of shaders
Fixed - Volumes are not rendered because of missing parameters of PhxShaderSim
Fixed - Displacement texture file path is not handled
Fixed - Object properties shadows_visibility is ignored by vrproxy
Fixed - GeomInstancer crash
Fixed - Meshlight causes "EXCEPTION IN CORE"
Fixed - Mesh light crash
Fixed - Change display flag from meshlight to its geo causes a crash
Fixed - LightLinker causes a crash with builds after January 27
Fixed - Crash when change renderFlag from materialX to V-Ray material library lop
Fixed - Crashes when Environment Fog as a material is present in the scene

Modified features

Cloud

Add new V-Ray Sky Clouds options for density, seed and contrails

Exporter

Add support for exporting Decal displacement texture for each decal object
Ply2vrmesh/vrscene: use path user attribute as object path if exists

Installer

Show correct V-Ray version in installer
Update installer images for official V-Ray 6 for Houdini release

Materials

Add support for vector volumes for smoke color in the volume grid shader in Houdini

Rendering

Expose Volume Shader Volumetric Render Elements controls
Add ultra low thread priority option to render settings

Textures

Add TexLayered plugin to Houdini
Hide "Layered Texture" from the shelf and remove (Max) suffix from "V-Ray Layered Texture (Max)"
Add missing "allow_negative_colors" option for the Layered texture

V-Ray

Update changelog - V-Ray 6 for Houdini Beta Release
Add support for point integer attributes for shading
Pick support for Houdini 19.5.534 for the stable builds for V-Ray 6
Mac OS notarization for V-Ray for Houdini builds
Set "Thread Priority" to "Lowest" by default
Standalone -frames=range is broken if path keyframes are used

Bug fixes

Alembic

Option to use velocity only
Cryptomatte "Per Attribute Value" does not work for Alembics

Exporter

V-Ray Enmesh: obj_scale is always exported as 1
V-Ray Sun: clouds_phase_y parameter is not exported at all
Tests regression related to export after specific commit on Feb 1, 2023
Missing scene_name export
VolumeVRayToon - depthCurveOn and angularCurveOn are not exported
Material Overrider plugin is not exported starting with nightly builds from Apr 07 2023
Attributes on packed primitives are not exported to Rayserver
OSL Texture and Material are not exported

GPU

Device Select window is empty until render
CUDA/RTX : white zDepth when using bucket sampler
Crash when render mesh with attributes in shader and moblur ON

IPR

Decal displacement is not handled by IPR
Selecting a node in the root /obj context will restart IPR
Multi ID Material does not trigger ipr update if builder is used as input
Fire Opacity Multiplier in "Fully Visible" mode has no effect in IPR
Black region in the render when changing camera windows size during a session
Crash if start a render after an ipr session
Crash when using the Bypass flag and node doesn't have inputs
Debug and Ignore flags do not work for nodes inside shaders assigned as material overrides through the Renderer ROP

Installer

Python is not packed into the V-Ray 6 for Houdini beta installer
V-Ray 6 installer says "V-Ray 5" when uninstalling
Licensing server and crash problems

Instancing

LightInstancer: Instanced lights are always invisible regardless of visibility parameter
Non-uniform scaling of instances
Rash with Decal Displacement when applied to geometry in Instancer2 plugin
Massive hair in

Lights

LPE light tags support
V-Ray 6 "C.*" LPE accumulates lighting for LPEs using a light tag such that the illumination is doubled for each tagged light

Materials

V-Ray Enmesh: enmesh material ignores attributes
Toon material error in log due to dynamic parameters flag
Cast Shadows option from V-Ray Object Properties does not work with static geometry when a material is assigned
User shader translator crash on Linux in hbatch/hython

OSL

String parameter creates a vector4 input instead of color input

Rendering

Volume emission not rendered in beautyLPE
"Probabilistic Volumetrics" option is ignored for GUI rendering in VFB but is exported correctly to VRScene for Standalone
VRayObjectProperties plugin: matted objects appear in AOVs even if generate_render_elements=0 and visibility settings are enabled as well
Instances: v@pscale with same value for all components is rendered different than f@pscale
Instances: v@scale and v@pscale are rendered same way
Animated cache path for instanced meshes is ignored for instances that point to the same file on the first frame of a render sequence
Tri-Planar texture randomization changes on every frame when using the "Auto" or "Instance ID" Mode with a sequence render from GUI or VRScene
Ocean Spectra "Downsample" option is increased on every frame when rendering an animation
Attribute "uv" for hairs in Alembic file render black
TriPlanar into Bump in Normal (Tangent Space) has artifacts if the rendered geo has additional map channels
Omni/point light with far decay is not rendered
Mesh Light disappears on second frame of a sequence render in GUI rendering only
Karma hangs on sequence renders when V-Ray in installed
VRayProxy: Hang after second Render to Disk

Textures

Randomly missing UDIM textures
Very small triangles are ignored when Texture Baking causing black artifacts
Wrong evaluation for frame token $F when used in expression for texture baking UDIM range
Light Mix "To Scene" option sets the Light color to black if a texture is present on the light

UI

Hide Cosmos Browser from V-Ray menu on Linux and OSX
Settings Environment UI - wrong parameter disable expression
BakerTool: tool icon is missing

V-Ray

V-Ray 6 - do not force BF/BF for GI in V-Ray 6
"Force Objects" ignores volumeGridCache
Fog Effect - wrong labels in "Options" folder
Wrong Interface license is being engaged in V-Ray 6 beta builds
Can't Pack a Scene with V-Ray 6 for Houdini 19.5.403
V-Ray Enmesh: replace "core" enmesh with the HDA
ObjectPropertiesSOP: overriten properties are ignored
Can't Load V-Ray 6 for Houdini 18.5.759
Pack Scene command throws an error with latest builds
Pack Scene option throws an error with Houdini 19.0 builds
Physical Camera - do not gray out Center Bias and Bokeh control when Bokeh blades control is disabled
VrayDeadline ROP: command line args are not provided to Deadline Job
VrayDeadline ROP: error messages printed when submitting a job
BakerTool: uv attribute name has no effect
VolumeVRayToon: asterisk as exclude list inverts exclude type
Displacement: lack of details when "view dependent" is OFF
Displacement Bounds are not computed when using an image file sequence for displacement
Pack Scene option breaks when using parameter references
Motion Blur affects image resolution when Screen Window Size options on the camera are non-default
Invalid Plugin ID warning
No scene output when a Post-Translate script is present on the ROP
Decal inside subnet crash
Random crash/hang on start/stop

VFB

Background Image is not updated when using $F tag for image sequences
"Ignore VFB Settings for Batch" has stopped working on May 31, 2023
Crash in VFB when quickly switching between saved images in the History by double-click

Viewport

Missing viewport preview for V-Ray Fur, Decal and Enmesh

Volumes

PhxShaderCache::raw_vdb_stream wrong ui guide

Chaos Cosmos

V-Ray 6: Cosmos: Crash / hang after importing 2-3 assets
Crash when attempting to import a Cosmos asset

OSX

Crash after closing Houdini on Linux and OSX

VRayScene

Crash when attempting to import material from a specific VRScene

Build 6.00.21

Official Release

Date - Dec. 13, 2022

New features

V-Ray

Integrated the Chaos Cosmos asset library for Houdini 19 and up, under Windows
Implemented the V-Ray Profiler
Implemented the V-Ray Memory Tracker
Added Adaptive Bucket Splitting
Implemented the V-Ray Enmesh for render-time generation of patterns over a mesh surface
Updated V-Ray IPR for better interactive feedback

Lights

Added V-Ray Procedural Clouds in the Sun Light
Added "Finite Dome" option to Dome Light
V-Ray Light Cache is now available in IPR
Added "Grouped Lights" option for Light Select AOV
Added "Volumetric Contribution" control for Lights
Added new "PRG Clear Sky" model for V-Ray Sun
Added support for Location/Date/Time in V-Ray Sun

Volumes

Added Volume Shader "Absorption Color" support
Added Volume Shader "Phase Function" (anisotropic scattering) support
Added support for Vector fields for the Volume Grid Shader

Materials

Added Thin Film layer for V-Ray Material
Added new random walk scattering "SSS" and "Volumetric" modes for V-Ray Material Translucency
Added Coat and Sheen layers for V-Ray Material
Add support for exposing parameters on Material Builder VOP
Update Toon Material UI to match V-Ray 6 in Maya

Textures

Now shipping the "MakeTX" utility with V-Ray for Houdini
Implemented V-Ray Random VOP to generate a random value in the range of 0-1 based on an Float or Color input
Curvature texture can now work either in "Convex" or "Concave" mode
Added input sockets for arbitrary "rest" attributes for the TriPlanar texture

AOV

Added "Temporal Mode", "Hardware Acceleration" and "Denoise Alpha" options for the V-Ray Denoiser

VFB

Added "Panorama View" and "Proportion Guides" option for the V-Ray Frame Buffer

Export

Rest attributes for Alembics are read directly from the ABC file thus reducing export time
Significant time to first pixel optimizations for Alembic and VDB caches

Workflow

Implemented "Material Overrides" system for Objects under the V-Ray Renderer ROP

Oceans

Added motion blur support for the generated ocean displacement
Add support for multiple spectra inside VDB
Add support for masks when using ocean spectra
Add support for separate mask geometry input for the Ocean Spectra texture
Add support for Wave instancing
Add support for Ocean Spectra Time Scale and Time Offset parameters
Restructured Ocean Spectra code to improve performance

Rendering

Add an option to remove resumable file after successful render

Solaris

V-Ray

Add V-Ray support for Solaris Render Region Tool
Add support for USDZ files
Added Plate Workflow support through the V-Ray Environment settings on the Dome Light LOP
Add texture tint/simple color correction controls for Dome and Rect lights
Implemented LPE light tags support for lights in Solaris
Add support for Motion blur based on velocity attribute
Add support for integer PrimVars with User Integer VOP
Add Deep Output support
Add support for "constant" PrimVars in Cryptomatte
Add Camera Overscan support
Add support for writing Cryptomatte data through husk
Add support for live volumes
Add V-Ray Environment Fog
Add Viewport Denoiser Result toggle
Add support for MaterialX position and normal output via husk
Add V-Ray Proxy support with V-Ray Proxy LOP
Add support for native Houdini volumes
Add "V-Ray Render Vars" LOP HDA similar to the Karma standard variables with presets for common AOVs
Add Hair Properties in Geometry Render Settings LOP
Add "Render as Disc" option for points in Geometry Render Settings LOP
Add NSamples/Velocity support
Add Bercon Noise support
Add Deep Output support for VDBs
Add support for Nested Instancing
Add Visibility Settings for Volumes in Solaris
Add Deep EXR options in Render Settings LOP
GPU crash to desktop with instanced geometry
Crash when the shader has wrong input connector type
Combine texture causes a crash
Crash when enabling and disabling the “instanceable” option of the Configure Primitive LOP
Hydra delegate crash to desktop in CentOS
Scene import (All) crashes in Python in Houdini 19.5
Crash to desktop with new GeomInstancer plugin
Meshlight causes "EXCEPTION IN CORE"
Crash when toggling any of the Render Geometry Settings LOP options
Light Linker not working
Preview shader is rendered grayscale - Linux only
Switching BRDFs inside the V-Ray Material Builder does not update the Viewport
Randomizer VOP does not work
Mismatch between Karma and V-Ray renders for points with “pscale”
V-Ray skips point with index 0 when rendering points
TexUserScalar does not work
Opacity of V-Ray material is not working when color output of ImageFile VOP is used
PrimVars/User Color on points is not rendered
Invisible parameter state of lights is ignored when changing delegates
Velocity blur for Volumes is not working
Remap texture does not work in "Color" mode
Impossible to select anything in the viewport when V-Ray is set as the Viewport Renderer
Adding a dot in the shader graph breaks the shader
Mesh Light Texture is not used or exported to the VRScene
Expose "Max. MipMap Resolution" in the Render Settings LOP > Options > Textures
Some parameters are not taken into account when saving Deep data
Missing "Affect Reflections" toggle on V-Ray light properties
Light material with "Direct Illumination" enabled does not update color changes in the Viewport
Displacement isn't present in final render through husk
Wrong default value export for "Preserve Map Borders" parameter when using subdivision
Hair when "Use Embree" is disabled is missing from the final render through husk
Chaining Switch VOPs does not work
Memory leak with husk and specific scene
LPE render var settings are not exported
Change render var format to color3f for color elements in VRayStandardRenderVars LOP
Image File VOP always uses "Inverse Gamma" as "Transfer Function"
"Use" options for Environment settings from Dome Light for GI/Reflect/Refract/Secondary Matte are not considered
Spotlight angle does not match Karma
Spotlight softness affects only shadows but the light borders are always sharp
Integer attributes are not supported
Material Output VOP does not trigger an update in Houdini 19.0
Missing vertex, face and normals lists for reference mesh when importing alembics with rest attributes
Vector primvars are not picked up
Render Settings LOP fails to load V-Ray UI due to ds file typo
Different color mapping between render passes
"Override Settings Globally" for Displacement is not working
Displacement VOP parameter "Use Global Settings" is ignored
Remap texture in "Float to Color" mode does not work with Blend material
Geometry goes missing after switching delegate from V-Ray to Karma and back to V-Ray
Viewport selection doesn't work
Overscan is not saved in husk's output EXR
V-Ray Remap node adds gamma shift
Empty viewport/render after switching delegates
Add OSL support
Pixel shift when rendering with overscan or using region render
Denoiser does not work
Wrong render region top coordinate
RenderVar sampler:pointReference not rendered for hair
Volumes rendered to disk through Husk have no emission
Wrong transforms in Hydra with specific USD scene
Coat and/or Sheen element breaks all the elements when render to MPlay
Hydra USD wrong render - "darg", "earg" and "targ" parameters for volume shader are not exported to USD
Error when V-Ray delegate is started on scene open instead of OpenGL on Linux
Parts of the geometry are missing when rendering via Husk
Volumes are not rendered because the cache path is not passed to PhxShaderSim
Vector Operations VOP does not export vector_a and vector_b parameters
Exposed the Extra Tex "force_32_bit_output" in the V-Ray Tab if sourceType is primvar for a RenderVap LOP
Added standalone precompiled V-Ray 6 USD builds
The AOV Bind VOP can now be used without a "bind:" prefix in the RenderVar LOP
Fixed Karma hanging on sequence renders when V-Ray is installed
Crash when Mesh light is present in the stage
Crash when changing the render flag from a MaterialX to a V-Ray material library LOP
Changing the display flag from a Mesh light to its source geometry causes a crash

MaterialX

Add support for MtlX Adjust as HSV to V-Ray
Add support for MtlX Range
Add support for Mtlx Burn
Add support for Mtlx Difference
Add support for Mtlx Screen
Add support for Mtlx Dodge
Add support for Mtlx Minus
Add support for Mtlx Disjointover
Add support for tan function for vector3 and vector4
Add support for sqrt function for vector3 and vector4
Add support for sin function for vector3 and vector4
Add support for log function for vector3 and vector4
Add support for floor function for color3,4 and vector3,4
Add support for exp function for vector3 and vector4
Add support for Mtlx Divide
Add support for cos function for vector3 and vector4
Add support for ceil function for vector3 and vector4
Add support for asin function for vector3 and vector4
Add support for acos function for vector3 and vector4
Add support for Mtlx Overlay
Add support for Mtlx Plus
Add support for Mtlx In
Add support for Mtlx Mask
Add support for Mtlx Matte
Add support for Mtlx Out
Add support for Mtlx Over
Add support for Mtlx Sign

Modified features

Alembic

Add support for SOP and OBJ level transform for Alembic primitives piped into a Mesh Light
Add support for Object Properties "Geometry Samples" for per frame particle Alembics with multiple subsamples

Chaos Cosmos

Ability to re-import the same model from Cosmos browser without using the same node
Keep the last imported object's node selected

IPR

Assigning a material to many objects while IPR is running is very slow and blocks the UI
Update V-Ray Softbox texture changes in IPR
Changes to geometry added as a gizmo for Fog effect causes the fog to disappear in IPR
Isolate for IPR in Light Lister does not show its status and it is impossible to find isolated light in a big list of lights
Add support for IPR Progressive spiral pattern similar to May and Max plugins
Remove V-Ray IPR ROP node - only keep Renderer ROP node
Export IPR "GI Depth" 16 bounces if V-Ray Material with Translucency mode SSS is present
Decouple IPR updates for surface and shader so e.g. displacement shader is not updated when changing the surface shader

Lights

Dome Light - hide Adaptivity parameter and enable Adaptive Dome by default
Light Mix - add support for HDAs when the light parameters are exposed at the HDAs top level
Light Mix - add "Name" parameter for Grouped lights mode
Set /obj V-Ray light node shape to 'light' and color to yellow on creation

Materials

Hide the Volume Shader "Scale Opacity by Scene Units" option under Smoke tab
Disable "Compensate Energy" for Hair material by default
Rename "Use Subdivision from Material" to "Use Displacement from Override Material"
Pick Velocity Blur Multiplier fix for Volume Grid Shader for single vector fields
Update V-Ray Material Translucency parameter names when Type is changed from "SSS" to "Volumetric"
Set V-Ray Material Reflection and Refraction depth to default 8
Hide "Multiply by Particle Age" toggle on the Foam shader
Add support for VRScene material overrides with Rayserver Instancer and Pattern ID texture through "scene_name" shader override
Support SOP level material assignment to volumes
Extend shader import to support custom plugins
Expose input texture slots for "depth" and "amount" parameters for V-Ray Material Translucency
Add support for camera shaders to Physical Camera
Add support for exclusion flag in Material Overrides object list
Add support for bundles in Material Overrides object list
MtlX Switch to V-Ray
Removed the "From Bump" option for bump mapping through the V-Ray Material or Bump Material
Add support for Cryptomatte by Material Path

Textures

Rename new sky model to "PRG Clear Sky" from "Improved" to match V-Ray for Maya
Missing import for Tex Float Correct
Add UV mapping tab for V-Ray Procedural textures with some UVW presets
Remove "Lighting" mode from Gradient Ramp texture
The TriPlanar texture now has input slots for the "frame_offset" and "texture_rotation" parameters

OSL

Changing OSL code wipes all parameter values

Volumes

Update the Foam Shader UI
Delete old Volume Shader ramps code

Rendering

Expose "Minimum Shading Rate" parameter on the Renderer ROP
Expose "Metalness" and "Roughness" render elements
Add "Ignore Render Region" option under Renderer Export tab "Batch Render" section for VRScene export
Export proper Foam Shader "Advanced" tab visibility options when particles are in ROP node "Phantom" list
Set "oprelative" to "/obj" instead of "." for V-Ray Renderer ROP
Add option to set Renderer's "RGB Color Space" based on an environment variable
Add support for animated textures in the "Render Mask" option of the Renderer ROP
Add Renderer ROP option for multiple shader overrides for multiple object sets based on the Pattern ID workflow
Add a Render Settings Lights option to "Disable Light Visibility" with an operator list for specifying the lights to affect
Export the smoke volume to VRScene even if rendering of smoke is disabled to ensure the transform is inherited from the smoke field
Match default render settings with V-Ray for Maya and 3dsMax
Removed ".vrimg" extension and Progressive sampler checks for "Resumable Rendering" options
Expose "Remove .vrimg on Render End" option in Renderer GUI
Add support for exposing parameters on Material Builder VOP

V-Ray

Forbid loading of VDBs in the Volume Grid Cache SOP
Update Image File VOP defaults in V-Ray 5.2
2D displacement per primitive needs to be supported by V-Ray.
Add support for Houdini 18.5.759
Dirt "Consider Same Object Only" option produces different results when used with packed primitives vs mesh geometry
Improve message for failing to find .vdb and writing raw data
Change default image file filter to "Sharp MipMap" for Image File VOP
Update Physical Camera Cinematic Shutter Offset/Angle default ranges
Change "VRScans" name to the "Chaos Scans"
Improve ACEScg workflow in V-Ray for Houdini
Update "Max. MipMap Resolution" parameter range
Reduce DWAA EXR compression RAM usage
Update the "Back To Beauty (Advanced)" AOV preset to ensure proper results automatically
Old scenes with physical camera show warning for missing parameters
Update V-Ray Renderer ROP shape in the palette

Exporter

Speed up export of instanced VDBs
Add optional warning for exporting large live geometries on export
Speed up VRScene export for instanced geometry
Modified VRProxy export path to match the path user attribute as object path if available
Add support for exporting Decal displacement texture for each decal object
Change the export for Material Output AOVs to use the PatternID and MultiID textures

Installer

Remove installer python logic in favor of Houdini's houdini_python keyword in packages
Add method for accepting EULA when installing V-Ray with the ZIP builds
Prevent installing over running V-Ray if Houdini or Husk are running
Updated the installer images for the official V-Ray 6 for Houdini release
Display a warning if the user is attempting to install mis-matching VRay/Houdini versions

VFB

Add support for VFB control through environment variables

GPU

Added support for rest attributes for the TriPlanar texture

Instancing

AOV Bind: "instance" node not shown
Implemented a faster instancer plugin

V-Ray Decal

Add support for VOP nodes as Decal Stencil
Added displacement amount and shift controls

UI

Remove "Auto Transfer Function" toggle and script from Image File VOP

Bug Fixes

IPR

VFB2 isn't updating the V-Ray Log information
Debug flag does not work when a VOP node inside a Material Builder is assigned to the geometry
Animated Ocean Spectra Mask is not updated on frame change
Exporting a VRScene in "Export" mode directly after running IPR causes empty standalone renders
Renderer "Override Camera Resolution" option changes do not update IPR
Referenced Shader changes do not update IPR
Parameter changes for nodes inside Material Builder piped into Multi ID material do not affect IPR
Material Override when using Distance Texture is lost when starting second IPR session
Persistent updates or crash when changing a Volume Shader parameter assigned at the SOP level
Render Region disappears on Production render or IPR start
Material Overrides are lost when changing the Timeline frame during IPR when Extra Texture with the override object in its Exclude list is present
Removing a Decal object from the SOP network does not affect IPR
No updates for displacement assigned at the SOP level to Alembic primitives
Renderer ROP Objects list does not update IPR
Deleting objects or lights does not affect IPR
V-Ray Proxy SOP is not updated in IPR
Geometry goes missing during IPR if there are nodes that are linked to the camera transforms in the scene
Lost ExtraTexture elements after the first one, on frame change, and if they have the same object in Exclude List
Material assignments for Multi ID Material are lost when using an input Material Builder instead of BRDF
Slowly generated mesh is not updated
No update when enabling/disabling the ROP Material Override options
Geometry that is hidden when IPR is started remains invisible even when unhidden during IPR
Unnecessary refresh when changing folders on a BRDF node
Renderer Camera settings do not update IPR
Viewport does not update view changes
Light Instancer not updated
V-Ray Object Properties are not updated in GPU IPR
Rendered objects would occasionally disappear when making changes to their geometry or adding additional objects to the scene
Material assignments are ignored in for the entire scene if a debug flag is present on a VOP node
Displacement per primitive not always updated in IPR
"Render with Take" uses the correct take then refreshes and reverts to Main during IPR
Toon Effect is updated in IPR only once
Any changes done while IPR is running cause the Fog effect to disappear
IPR update broken in 5.x for Light Instancer
Velocity blur is not updated when changing "Shutter Speed" of Physical Camera
Sun parameters do not update Sky texture for IPR when used in a Dome Light
Hang if VFB IPR button is clicked multiple times before IPR starts
Crash with partitioned alembic when using Motion Blur and Displacement
Crash with Alembics using Displacement and Material AOVs
Random crash during IPR or when attempting to start a production render
Crash when toggling on/off the Mesh Light's "Use SOP Geometry" option
Crash when changing the "Motion Blur Multiplier" on the Volume Shader
Setting "Screen Window Size" to negative during IPR crashes V-Ray and Houdini
Crash when starting IPR first then Production Render if "Cache Bitmaps" is enabled
Crash when disabling the V-Ray Physical Camera during IPR in "Render View" or Viewport
Crash if starting a production render after an IPR session
Crash in IPR when modifying the render region while scene changes are synced
Debug flag on Referenced Shader VOP has no effect in IPR
ROP Render Scripts are not executed for IPR
Settings for displacement coming from Override Material do not refresh in IPR
VFB Render Region does not work if you start IPR when it is disabled
Constant updates for volumes when changing shader params if Motion Blur On and rendering the last file in the VDB sequence
Enabling motion blur is not handled during IPR
Decal displacement is not handled by IPR
Imported VRScene ignores changes to Objects visibility list
Disabling a light's Node visibility flag during IPR will incorrectly disable the light

Rendering

OSL crash when redrawing UI after render
Crash with Light Mix on render start
Crash rendering groomed fur/hair with V-Ray
Crash when attempting to render a volume without volume shader assigned to it
Karma hangs on GUI sequence renders when V-Ray is installed
Freeze on production render start with Rayserver Instancer and Displacement
Crash if render is quickly started, stopped and started again multiple times
"-imgFile" flag for standalone rendering causes double output
VFB is brought to foreground on every frame when rendering a sequence, even when Houdini is minimized
Wrong frame token exported when using $F4 tag for textures
Per-primitive displacement does not render correctly
Add support for vray_renderable packed attribute
Texture for Dome light is not exported when using a referenced Image File VOP
Geometry nodes in an Object network inside a parent Geometry node are rendered even when the parent Geometry node has visibility disabled
Color AOV name expression is not evaluated for VFB
Material Overrides do not work for more than one object in pattern list
Forced hidden object with material override does not have material in render
Overscan disables render region
When using shader overrides with VRScene SOP the render becomes darker
NUMA slowdown when rendering Alembics
Double camera export when using a Switcher to change the render camera per frame
VFB Render Region in viewport is not always rendered
Render Region resizes unproportionally when Camera Resolution is increased
"Visible in Refraction" causes wrong render output when a glossy material is present
Baked volumes in VRScene produce empty renders in some frames
Render Mask in "Object" mode does not work
Physical Camera missing "specify_focus" export causes wrong DoF renders
Crash rendering groomed fur/hair with V-Ray in a specific scene
Freeze on production render start with Rayserver Instancer and Displacement
Immediate crash when pressing Render after upgrading to MacOS Big Sur 11.2
Standalone - wrong frame loaded for Alembic in Distance texture when rendering with -frames argument
VFB Compare settings are lost when starting a new render
Wrong render in Houdini with TriPlanar texture applied to Alembics with rotation in Y
Missing texture animation export for particular scene on first export, if no GUI render is initiated
Empty render for live volumes when Motion Blur is enabled
Alembics exported with object level transforms have double transformations when rendered
Volume emission not rendered in Beauty ("C.*")LPE
Randomly missing UDIM textures with specific scene

GPU

V-Ray Material Translucency parameters are grayed out for GPU but should not be anymore
Wrong Light Linking export for GPU
Matte Surface not working in GPU render for poly geometry
Lighting discrepancy between CPU and GPU results when Direct light is used with Intensity higher than 1
Square artifacts on using Adaptive Dome light on GPU
CPU instead of RTX mode is started
Image sequence as texture not rendered on GPU
Attributes for shading with User Color and User Float do not work for Alembic hair and particles on the GPU
Freeze with specific volume when using GPU
Crash with a specific setup including V-Ray UV Explicit and BerconNoise
Extra Texture AOV include list does not work for particles
TriPlanar texture with rest attributes does not work for live geometry and Alembics
Missing bitmap color difference between CPU and GPU
Color Correct (Maya) texture is not exported to .vrscene when GPU is chosen
Crash when rendering a mesh with attributes sampled in the shader and motion blur enabled

V-Ray

In a newly created blank scene using certain python code provokes a crash
Crash with Light Mix "To Scene" option when using lights that are not inside an HDA
Crash in a specific scene with adaptive lights
Crash on Python module load on Linux
UDIM tag in the output image name is missing when baking a single UDIM tile
Fixed an OCIO slowdown in 5.10.20
Decal include and exclude lists work on single objects only - multiple objects are ignored
Wrong filename output when using an expression sampling a point attribute with Python
Add support for time-dependent values for image output file name and folder path
State of "Enable Large Mesh Warning" toggle is not saved
Camera motion blur not working with specific builds
Difference in Ocean surface render compared to Mantra
Empty export for "Exclude List" in Extra Texture AOV
Wrong default values for OCIO texture
Wrong output for Remap texture in "Value" to "Value" mode
Object Properties SOP overrides own settings when chained in a Geometry network
Wrong animated visibility output for objects
Swapped logic for "Use Main Line Controls" toggle
Set "Adaptive Dome" to enabled by default for Dome light
Object Level transformations are ignored for Motion Blur when "Use Velocity Blur" is enabled
Displacement does not accept negative "Amount" values
Environment Fog does not work with specific builds
"Geometry Samples" option for Motion Blur for Points has no effect
Fixed issue causing truncated paths when over 255 characters are used on Linux
Wrong output for Integer to Float texture
Added support for per-face string attribute sampling with the PatternID texture
Added support for V-Ray Scenes for Texture Baking
Added support for Cryptomatte by attribute for crowds
Wrong output for Multi ID Texture when using "Round to Integer" option
Fixed Volume Grid Cache SOP is ignored by Renderer "Force Objects" list
Fixed Python issue causing empty "About V-Ray" window
Updated the V-Ray EnMesh SOP with a custom HDA to simplify setup
Overridden properties for Object Properties SOP are ignored
Translucency Depth is changing Fog Effect in the opposite way
Non planar faces produce bad UV tiles when V-Ray subdivision is applied to the geometry
Cryptomatte by attribute does not work for crowds

VFB

Light Mix in "Manual" mode does not pick up Light Select elements
Do not tint RGB channels when displaying them isolated
".cube" files specified in the OCIO config for the OCIO View Transform are not used
Background layer does not work
Using an EXR as Background image with "As Foreground" enabled causes the image to go black
If you save the .hip file for the first time in the current session "Use Project Path" doesn't enable VFB History
Crash with the VFB Stamp layer

Lights

Light Lister "Isolate" button does not work
Light Select wildcard "*" for lights parameter returns all scene nodes causing a slowdown with heavy geometry
Light Mix - Dome Light "Intensity" and "Color" are not updated when inside a locked HDA
Light Mix crash when attempting to send the changes "To Scene" if the lights are in a locked HDA
The V-Ray Sun clouds_phase_y parameter is not used at all
Added LPE light tags support
Added support for Mesh light with multiple meshes as source geometry

Materials

Material Library download fails if the provided disk path does not exist
Cryptomatte by material ID and material HDA
Displacement is not overridden when using multiple Material Overrides on the Renderer ROP
Parameters set with textures for OSL Material are ignored
Wrong material assignments when using animated Switch node and uploading to Chaos Cloud
Enabling Motion Blur breaks Material Overrides
Add support for Null VOP for Referenced Shader
Unlocked Depth and Scale Max value for V-Ray Material Translucency
Lag in V-Ray Material Builder VOP context when opening the nodes menu with Tab or RMB click
Add support for pattern based material overrides on the Renderer ROP through Pattern ID texture
Disabling "Primary Visibility" for object with Light material does not work
ROP's "Disable Light Materials" does not affect Light materials with Direct Illumination enabled
Material Override is applied to Mesh Light when using wildcard flag for selection
Enmesh material ignores custom attributes
Crash with material overrides enabled when a light is present in the scene and using a wildcard flag
Hang during Light Cache step when using Decal, Rect Light and Diffuse BRDF
Crash with HDA holding Volume Grid Shader VOPs made in 4.3 when loading the HDA in V-Ray 5 builds
Wrong UI disable index for V-Ray Material "fresnel_ior", "translucency_color" and "fog_color_tex" inputs
V-Ray Materials SSS produces faceted shading with low poly geometry

Textures

Import of Remap texture selects "color" output regardless of what input it is connected to
Empty drop-down for OCIO tab in Image File VOP
OCIO node is missing input texture slot
Distance Texture Objects list is empty when a Subnetwork is specified
Some TriPlanar texture options do not work
Image File VOP "Transfer Function" parameter is ignored
Distance Texture ignores animated transform of target object
Update User Float and User Integer default attribute names
Wrong gamma applied to textures in Dome light when using ACES
Very small triangles are ignored when Texture Baking which causes artifacts
Adding an object to the Distance Texture "Exclude List" will disable its visibility globally
Creating a new layer for a Layered Texture does not create an input connector for the mask/blend parameter
TriPlanar texture into bump does not work when bump_type is "Bump" when used with rest mesh or rest attributes
Displacement via V-Ray TexTriPlanar results in holes in the geometry with specific scene
Very small triangles are ignored when Texture Baking causing black artifacts

OSL

Particular texture file UI is not loaded
Warnings printed with specific scene with OSL
UI is not loaded for a specific OSL texture file
Chaining of OSL textures does not work with float parameters
Instant crash when try to load particular ".osl" file
Crash with particular OSL file both when loaded from disk and used as inline code

Alembic

Expression including frames and subframes on Alembics isn't working as expected with V-Ray Core 5.10.20
TriPlanar swimming coordinates when using "rest" attributes with Alembic file
Double motion blur for Mesh lights using Alembic as source geometry
Material Overrides do not work for multiple Alembic objects
Poor Cryptomatte element sampling over overlapping multimaterial Alembic when using Depth of Field
Triangular artifacts on packed Alembic when texture Filtering type is not set to None or Nearest
Primitive attributes are ignored for splines/hair
Add support for velocity sampling even when using single-file deforming Alembics
Primitive hair attributes are not interpolated correctly for Alembics
Shading artifacts with Random VOP when using float attribute in Alembic file
Crash in V-Ray Core with Alembics, Motion Blur, Subdivision and V-Ray Material Bump map
Attribute "uv" for hairs in Alembic file can not be sampled for shading

Volumes

Possible crash when shader for volume is not a Volume material
Immediate crash when Denoiser and Volume material with the Volumetric Z-Depth parameter set to 'Separate V-Ray Element' is added on volumes
Crash when trying to convert particular VDB with the V-Ray VDB to AUR node
Immediate crash when importing big “.aur” files in V-Ray Volume Grid Cache

Instancing

Orientation of instances calculated from @N or @N + @up vectors is wrong
Invalid velocity handling for Rayserver Instancer when using Motion Blur
Shadow artifacts with Rayserver Instancer
Crash with SSS and multiple instances when using new instancing plugin
Crash with Light Instancer with scene containing 250 000 lights
Massive hair instances strand length crash
Crash with Decal Displacement when applied to geometry in Instancer2 plugin
High memory usage and geometry compile time when using Alembic with instanced shapes instead of ".vrmesh"

Exporter

Remove file exists check when exporting packed disk primitive volume by path to speed up VRScene export
Slow VRScene export time for instances with Motion Blur
Slow export of animated cached VDBs
Very slow export and high memory usage for Mesh Light using deforming alembic as source geometry
Wrong export for frame($F2) token in texture path
Channel string reference for VRScene Export path on Renderer ROP with frame token causes wrong export
VRScene export for per frame Alembic files with time offset is not animated
Export Mesh Lights generated by Light Material with "Direct Illumination" enabled to Light Select element
No VRScene export for animated objects after first frame when Motion Blur is Enabled
Empty plugin export for Extra Texture element
Empty parameters export for Distance Texture - only Objects list is exported
Empty export for Renderer Image Sampler parameters
Float to Color is always exported, even when the float output is connected to a float input
Light Instancer is not exported when texture baking
Distance Texture object is not exported if part of an Override Material
Wrong Displacement export for "Vector Displacement" assigned through Material SOP at the SOP level
VRScene export - missing material AOVs with Alembics and Motion Blur when Offset is 0 and Duration is 1
Only first frame is exported to VRScene for animated objects in Distance Texture list if their visibility is disabled
Reflect/Refract mask are exported incorrectly
Crash if you use VRScene Shader Overrides without typing Scene Name
Material Overrides are lost for VRScene export after the first frame
"Clip Mesh" parameter for V-Ray Clipper is not exported
No export for Image File OCIO tab
Animated shader parameters are not exported for static meshes
Proxy Export not working in latest nightly builds
VRScene export for Mesh Lights with Alembics only uses the first frame of the sequence
Issues with Proxy export and particles
Multi-valued params are not exported
Light Textures - frame ($F) token is exported in the file path instead of evaluating the expression
Wrong export for Image File VOP into Layered texture causes no color output
Wrong UV set export for Image File VOP when exporting a .vrscene
When Mapping of Procedural textures is set to UV, parameters are not exported to .vrscene
Object Scale for V-Rya Enmesh is always exported as 1.0
Multiple plugin exports when generating per frame VRScene files
Crash on last alembic frame export when motion blur is enabled and using per-frame alembic files
Empty export for Extra Texture element
Hang after second V-Ray Proxy export
".vrscene" file path is truncated to 256 characters on Linux
Stray points are exported both as vertices for GeomStaticMesh and as particles for GeomParticleSystem
Wrong Image File VOP transfer_function export when OCIO is enabled on Image File VOP
Mac: Exporting animated proxy into a single file would occasionally cause Houdini to become unresponsive

VRayScene

Incorrect import of Remap Texture from a VRScene file exported from Maya
Incorrect import of volumeNoise (3D noise) from a VRScene file exported from Maya
VRScene "Unpack to Polygons" does nothing if a node named "vrayscene_unpack" is already present in the same SOP network
VRScene "Unpack to Polygons" does not create a material network
Crash when importing materials from .vrscene

Installer

Issues with silent installation + config.xml
Houdini 19.x can't open local help when V-Ray is installed due to QT lib errors
License server is no longer installed unless specified
Font color and background are the same in the new Installer on Linux

Chaos Cosmos

Update the packing script to ignore the missing Cosmos files
Cosmos Browser window does not store position
Assets import is creating overlapping nodes
Models are imported mirrored by X axis

OSX

Crash on start with Houdini 19.5.303

UI

Removed Hair Properties *Use Global Hair Tree" controls
Displacement Properties shelf tool does not work
Crash when clicking on the "Transfer Function" menu of the Image File VOP in Houdini 19.5

Ocean

Ocean Spectra Texture fails when using "Filter above resolution" option
The Ocean Spectra texture with motion blur produces slightly different displacement than without motion blur
Frame token for Ocean Spectra texture does not work

Content

Space Tools

Build 6.20.05

New features

Modified features

Bug fixes

Build 6.10.09

New features

Solaris

Modified features

Bug fixes

Build 6.00.21

New features

Solaris

Modified features

Bug Fixes