--- title: "7.20.10" canonical: "https://documentation.chaos.com/space/VRAYHOUDINI/370835504/7.20.10" format: markdown --- **V-Ray 7, Update 2** *Official release* **Date **- Dec 8, 2025 > Macro (ui-button) ## **New Features** --- ### **V-Ray** - Added Artistic and Blackbody emission models for the V-Ray Volume Shader VOP - Added Moon and Stars options on the V-Ray Sun Light for a night sky effect when the sun is below the horizon - Added the option to clip Gaussian Splats loaded through the V-Ray Gaussian Splat LOP/SOP node - Added resolution-independent bump option on the V-Ray material to aid in cases where the bump appearance differs across various resolutions - Added the ability to override the mip-map level of textures in an object's shading graph under the Render Geometry Settings LOP - Added support for Acceleration Blur under the Velocity Blur menu - Added support for the normals' Cusp Angle property - Added support for camera resolution override when using the UV Projection VOP in Perspective mode ### **Chaos Cosmos** - Added support for AI-based material generation in the Cosmos browser ### **Houdini** - Added support for Chaos Vantage as a Solaris render delegate - Added support for MaterialX nodes in Vantage natively - Added support for 21.0.512 - Added support for 21.0.440 - Added support for 20.5.684 - Added support for 20.5.654 - Added support for 20.5.613 ### **Solaris** - Added initial support for Hydra2 - Added support for dynamic parameter aliases in Hydra - Added a simple version of a custom Deadline submitter, shipped with the V-Ray for Houdini installation - Added a new Cubic mode for rendering of splines to improve Feather Procedural results with V-Ray. Further optimized time to first pixel and RAM use - Added support for int64 primvars ### **MaterialX** - Added support for 1.39 - Added support for the MtlX Standard Surface VOP's Dispersion parameter - Added support for the MtlX Facing Ratio VOP - Added support for mixing displacement ## **Modified Features** --- ### **V-Ray** - Light Path Expressions will now be internally converted to V-Ray Light Selects where possible, to accelerate rendering and aid in setups that utilize V-Ray Light Cache - Hair tessellation is now multi-threaded to reduce the time to first pixel - The maximum number of V-Ray Light Select AOVs is now increased from 96 to 256 ### **Houdini** - The V-Ray installer executable will now utilize the HOUDINI_PACKAGE_DIR variable to point to the installation files' location ## **Bug Fixes** --- ### **V-Ray** - Broken materials in V-Ray standalone with USD 0.25.05 - Face_mtlIDs attribute is ignored for .vrmesh export - Only the first frame is successfully rendered with V-Ray Standalone for a particular VRScene file - Crash with Alembic, motion blur, and subdivision in a specific case - Possibility to set a pre-scaled vector texture for displacement - Inconsistent results with Reflection Glossiness/Roughness parameters on V-Ray GPU and V-Ray CPU. - The animated displacement amount does not work in IPR when changing frames - Stepped deformation blur with single-file Alembic caches when using more than 2 geometry samples for motion blur - Attributes used directly as a bump texture do not work - Not all instance data is exported into .vrmesh when doing a V-Ray Proxy export - Debug version with better visualization for LPEs - Wrong output for Diffuse AOV when using Blend material with multiple Hair materials - Investigate artifacts and slower rendering with a particular scene between V-Ray 6.2 and V-Ray 7.0 - The position of geometry is not updated when Velocity blur/Acceleration blur is enabled - Do not display an error dialog when the error code is 0 - Deprecate the Displacement Shift parameter for V-Ray Decal - Material not exported for points - Alembic velocity motion blur doesn't match with unpacked geometry - No motion blur with alembic files and displacement in the shading graph - UV seams with V-Ray Subdivision when underlying mesh has overlapping or non-convex faces ### **V-Ray Licensing** - Hang when closing the login dialog in Solaris - Using the new named licensing, a GUI license is NOT engaged for Production rendering in 'vanilla' Houdini - Python render pick up interface license ### **Chaos Cloud** - Fixed an issue causing scene upload to fail due to a version mismatch ### **Solaris** - Endless loop when Geographic Position is enabled for the V-Ray Sun - The default signature of a parameter is no longer working - Pattern ID node is broken - Switching on/off Make Instanceable parameter causes the geometry to disappear from the viewport - Improve import of .vrscene files via Sopcreate > vrayScene node - Make instance-able slow IPR update - The user_attributes parameter of GeomInstancer is empty - Motion blur always exported as ON, but no motion blur in the render - The Toon Effect from materials is not applied unless enabled in the Render Geometry Settings - Separate namespace for viewport render settings - VRayScene LOP disable preview is not taken into account - VRayScene import mode is wrong when left on the default value - Wrong intensity of USD lights - Crash with a specific USDZ file when V-Ray is started in the viewport - Crash when using the X button in a V-Ray shading graph to visualize a V-Ray Dirt texture - Dome light has no parameters in V-Ray tab; Sun light and Area light have settings for Moon and Stars - Image File OCIO toggle crash - Crash when trying to export vrscenes - UV seams with specific geometry when V-Ray Subdivision is applied - The prototype transform is ignored for mesh lights - Crash when trying to create a subnet from a Layered texture - The V-Ray Material Builder appears to dirty the shading graph of adjacent Material type nodes - No update for instances when modifying the prototype, scale up the chain - Disconnecting a material graph pipe into the Visualize VOP during IPR causes a crash - Avoid overwriting paths when V-Ray is used - VFB is not shown for husk - Incorrect offset with overscan - AI Upscaling doesn't work for all resolutions - Expose the Dome Light’s Affect Alpha parameter in the V-Ray Atmospheric HDA - Crash when Intel Open Image Denoiser is used in the viewport - Improved IPR toggles updates - Tests for MaterialX shaders crash on Linux - Implement pattern matching for lights - Multi-channel EXRs saved through Hydra delegate do not work with Intel's Denoiser, both in the vdenoise tool and Houdini's idenoise tool - File logger support - LOP nodes don't get exported to .vrscene - Hang if non-hydra or deep output paths do not exist - Display licensing messages in the viewport - Aerial Perspective does not export the Sun parameters - Material library fails to detect animated V-Ray VOP nodes - LPE object labels don't work for instances - Wrong displacement scale for instances when prototypes have a non-default transform - Crash when changing the displacement amount parameter - Visibility properties of instanced volumes with new volume shaders are ignored - Volume shader IPR update crash - Artifacts when rendering two perpendicular planes in the viewport - Crash with invalid MultiID texture setup - Single subset shader resets on IPR update in some cases - NVidia AI Upscale parameter causes flickering of the viewport render - mtlxrotate2d not working as expected - Crash with Feather Procedural when changing related parameters - When using the mtlX displacement node, negative values for the scale cause the geometry to disappear in the viewport - Viewport render stats - Exponential time to render with 100+ MtlX nodes - Crash when multiple subnets are chained in a V-Ray shading graph - Rayserver Instancer with Node with ExtMapChannelsis causing a black render - Primvars AOVs not rendering without a camera in the Render Settings - Subdivision Reserve Geometry Borders in Render Geometry Settings does not affect the final outcome - Dome light's Use Tex. from Dome checkbox has no effect - Environment setup ### **Volumes** - Crash with the new Volume Shader and deep output when Deep Merge Mode is set to 3 - Crash with a particular setup - Only one of the density fields will render when using multiple Volume and VDB Field Assets referencing different SOPs, all under a shared Xform prim - Different results between Husk and Solaris viewport rendering when using VDB combined fields - Wrong export for volumetrics in vanilla Houdini causes the prototype to be visible ### **Textures** - Invalid randomization for big values when using the Random VOP - The Size parameter is not translated for the V-Ray Smoke texture - Blurred bitmap when using rest attributes with instanced geometry rotated in intervals of 90 degrees - COPs are baked differently with the latest builds ### **VFB** - Improve the functionality of the masks in the Exposure layer - Move Highlight Burn from Exposure layer to Filmic Tonemap - Linear - Polygon region's bounding box is cleared in CPU IPR ### **USD** - USD 25.X - dirty primitives are not updated - USD 25.x Light Linker support - Multi-threaded issues with a particular .usd file - Missing textures for USDZ file when using usdView - Nested rayserver instancers may evaluate the wrong material - Wrong build revision in the render log - Added primvars:name syntax support for sampling primvars - Rendering with usdRecord will occasionally use the wrong camera instead of the one passed through the -cam console argument ### **MaterialX** - MtlX Position doesn't work as intended when scene offset is used - Fixed an issue with the MtlX Position VOP - Override parameters with primvars - Assigning mtlx builder not working - Anisotropy values closer to 1 cause dark results - Fixed ND_heighttonormal scale