Build 6.10.09

Official Release

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