Release Notes (Latest)

2026.3 (2026.02)

Release Notes

[C4D] Fixed a bug introduced in 2026.2.0 that could cause the Substance shader to crash
[C4D] Fixed delete unused materials, it deletes environment materials even it's still being used
[C4D] Fixed an issue where Redshift Sun&Sky camera contribution would break transmission contribution
[Maya] Fixed bug where moving timeline slider when IPR is running was not updating animated Sun and Sky rotation
[Maya] Fixed crash happening when trying to render animation with batch render
[Maya] Fixed crash sometimes happening when re-sizing MV window
[Max] Creating RS Bitmap and RS Texture in Material Editor now brings up the File Open Dialog -- requires 3ds Max 2022 or later
[Max] Fixed bug where loading very old scenes can result in global Post Effects missing the Background parameters, leading to a crash when rendering
[Houdini] Added support for Houdini 21.0.559 and 21.0.596 and dropped support for 20.5.654 and 21.0.440
[Houdini] Added the "Redshift_getCurrentROP" hscript command to get the current IPR/RenderView ROP node path
[Houdini] Improved support for scenes with multiple Sun&Sky nodes to handle only one enabled at the same time
[Houdini] Fixed bug that could affect the RS RenderView while switching cameras with different resolution
[Houdini] Fixed bug introduced in RS 2026.2.0 that could affect the visibility of the RS VOP nodes params
[Hydra] Added support for Solaris 21.0.559 and 21.0.596 and dropped support for 20.5.654 and 21.0.440
[Hydra] Added support for the Solaris 21.0 statistics panel (latest Houdini 21.0 production build only)
[Hydra] Added support for the Camera LOP "Exposure" parameter if the Redshift custom "Exposure (EV)" param is not set
[Hydra] Added global displacement options to the viewport rendering settings
[Hydra] Fixed bug that could affect the rendering of Copernicus textures as dome lights
[Hydra] Fixed bugs that could affect the ObjectID and Depth AOVs
[Hydra] Fixed bug that could affect the cryptomatte and deep AOVs when using "No Multi-Layered EXR File"
[Hydra] Fixed bug that could affect the Refractions AOV Light Groups option
[Hydra 2.0] Fixed camera and transformations motion blur limitations
[Hydra 2.0] Fixed primvars sampling issues
[Hydra 2.0] Fixed several issues in the light linking feature
[Hydra 2.0] Fixed several issues affecting the nested instancing
[Hydra 2.0] Fixed the live updating of the RS custom light and camera parameters
[Hydra 2.0] Fixed bug that could affect the render settings while enabling/disabling some LOP nodes
[Hydra 2.0] Updated primitive adapters to support the USD and Alembic procedurals, and RSProxy primitives
[Hydra 2.0] Added support for rendering USD implicit surface primitives
[Hydra 2.0] Added support for the live updating of the COP2 references on the shader nodes
[Hydra 2.0] Added support for USD mesh lights (Geometry Light LOP in Solaris)
[USD Procedural] Updated Hydra 2.0 architecture in the USD 25.05 version
[Metal] Fixed a bug that can cause instability during IPR rendering when using hardware ray tracing
[Metal] Fixed a bug that caused a crash when using clouds and texture displacement at the same time
[All] Improved texture displacement performance
[All] Fixed a bug that caused incorrect material blending when using both material stacking and material blender shaders
[All] Fixed limitations of distorter node regarding nested distorters and bumpmapping
[All] Fixed a bug that caused all outputs of the Flakes shader to be treated as a normal when used as a custom AOV output
[All] Fixed a crash when disabling meshes in proxy instances
[All] Fixed a crash when using both baking-based features and materials that require a texture to be forced in-core
[All] Fixed a bug that caused incorrect material blending if one of the materials was black
[All] Fixed a bug where RS Clouds could introduce bucket artefacts in Ray Traced SSS
[All] Fixed a crash when using hybrid rendering with CPU compute devices
[All] Fixed an issue that caused holes in meshes when using texture displacement
[All] Fixed a bug that caused texture displacement to disappear when applied to tessellated meshes with no uvs
[All] Added support for smooth normals to texture displacement
[All] Fixed an issue where vertical artifacts would appear when using texture displacement in the software ray tracer
[All] Fixed a bug where texture displacement would not work with deformation motion blur in the software ray tracer
[All] Fixed a bug where proxies would render incorrectly when the units are scaled
[All] Fixed a bug that could cause excessive noise when rendering volumes with physical sun-sky environment
[All] Fixed a bug that could cause a crash when rendering volumes with empty voxel grids
[All] Fixed bug that would cause dome light EV adjustment to be lost temporarily after switching dome light image
[All] Fixed a bug that caused auto bump to look wrong when using texture displacement

2026.2.1 (2025.12)

Release Notes

[Maya] Fixed bug where ReflectionCausticCaster and RefractionCausticCaster visibility options are not read from the scene correctly
[Maya] Fixed error message happening when using RS UV context projection
[Maya] Added NE template for RS UV context projection node
[Maya] Fixed RS UV context projection port not visible when expanded among Maya File node's ports
[Maya] Make RS Sun default orientation match other DCCs
[Max] Fixed bug introduced in 2026.0.0 causing view-dependent meshes such as Body Objects to have low resolution
[All] Fixed an issue where extreme texture displacement would have artifacts
[All] Improved texture displacement performance
[All] Fixed a bug introduced in 2026.0.0 that caused artifacts when using bump mapping with OSL shaders
[All] Fixed a bug that caused increased noise in clouds viewed through reflections and refractions
[All] Added support for auto bump to texture displacement
[All] New UV Context 'spatial' projection now matches C4D Tag equivalent
[All] Improved complex mesh pre-processing performance when using texture displacement
[All] Fixed issue that could create wrong-looking texture displacement when using a UV Context projection transform
[All] Fixed a bug that caused texture displacement to ignore switch shaders

2026.2.0 (2025.12)

Release Notes

[C4D] Fixed assertion that was triggered when custom AOVs were added or removed
[C4D] Fixed a bug when you create Materials/Lights/Utilities from material manager, you will need to undo 3 times to delete the material
[C4D] Fixed a bug where a C4D document was immediately marked as modified (asterisk in title bar) when loaded via Python
[C4D] Fixed a bug where enabling motion blur would cause a difference in sun&sky light sun direction
[C4D] Update default values for light object
[C4D] Update default values for cloud object
[C4D] Added viewport sun light for the Sun and Sky object
[Max] Breaking change: Fixed data corruption in scalar parameters related to Dirt controls for RS Brick since 2025.2.0 -- affected shaders may need to be rebuilt and Alpha Shift / Texture Shift are now stored as Point2 parameters which are not supported prior to 2026.2.0
[Max] Fixed incorrect default values for Direct Lighting Scale and Ambient Lighting Scale on RS Clouds
[Max] Fixed bug where IPR does not update in response to time changes for RS Clouds affected by wind
[Max] Fixed bug where modifying IPR Undersampling during IPR has no effect
[Max] The Map ID parameter of RS Maxon Noise now defaults to 1
[Houdini] Added support for Houdini 21.0.512 and dropped support for 20.0.751 and 20.5.613
[Houdini] Fixed bug that could affect the RenderView toolbar background color
[Houdini] Fixed several issues in the Redshift Proxy Output SOP node GUI
[Hydra] Added support for Solaris 21.0.512 and dropped support for 20.0.751 and 20.5.613
[Hydra] Added Resolution Mode param to the Redshift LOP
[Hydra] Exposed the husk headlight options in the Redshift LOP
[Hydra] Fixed bug that could fill the USD log panels with messages such as "Attempted to get value of type ..."
[Hydra] Fixed several Redshift params folder names to prevent problems with other rendereres
[Metal] Fixes for potential instability with texture baking feature
[Metal] Fixed a bug introduced in 2026.0.0 where OSL shaders could not output matrices
[All] Fixed a crash when using textures that are stored on a network file system on MacOS
[All] Fixed a bug where using some non-material nodes as headnodes alongside custom AOVs was broken
[All] Improve validation for OSL shaders: Closures inside loops are not supported
[All] Fixed a bug that would produce incorrect shader baking results for sprite objects that are motion blurred
[All] Fixed a bug that would create bucket artefacts when Ray Switch shader is used with constant colors
[All] Fixed a bug that caused baking to be broken for scene units other than cm
[All] Fixed a bug introduced in 2026.0.0 that would cause incorrect lighting when rendering in IPR and "Camera Space Render" is used
[All] Fixed a bug introduced in 2026.0.0 that would cause incorrect volumetric lighting behind zero opacity objects in fog
[All] Fixed a bug introduced in 2026.0.0 that would cause bumpmapping artifacts when using cylindrical UV projection
[All] Fixed a bug introduced in 2026.0.0 that would cause blurry spotlight textures if used with shadow softness or in volume rendering
[All] Added missing unit handling to depth AOV
[All] Changed slider limits in UnitConversion node to more reasonable values
[All] Fixed a bug where high values of position offset would cause incorrect cloud rendering
[All] Fixed a bug that caused greyscale textures to be red when projecting the texture based on other textures or raytracing based shaders
[All] Improved quality of sun-sky lighting and shadows, which previously could flicker or be wrong depending on the location of the sun and the size of the sun disk
[All] Added support for AMD RX 9000 Series GPUs
[All] Updated IES light to support overriding the output based on the luminous power or peak luminous intensity
[All] Added Texture Displacement, offering improved detail rendering and quicker editing performance
[All] Updated Hardware Ray Tracing back-ends to deliver better interactivity
[All] Added support for automatic displacement that can be managed through global render settings
[All] Added new UV Context Projection shader and associated material/node port support
[All] Fixed a bug where cloud shadows would affect physical lights
[All] Fixed a bug in clouds ambient light calculation which prevented physically correct lighting
[All] Fixed a bug in scene bound calculation that could clip the volumes incorrectly based on scene scale units

2026.1.0 (2025.10)

Release Notes

[C4D] Fixed a bug with motion blur always being ON for Splines
[C4D] Fixed volume extraction when vdbs contain "tiles"
[C4D] Fixed Batch-only Mode being ignored in IPR for AOVs
[C4D] Fixed a bug with step value being too big for node material inputs
[C4D] Fixed a bug where material previews would not render if a material contains an empty OSL node
[C4D] Added light and volume samples to RS Sun&Sky light
[C4D] Fixed a bug where clouds with wind speed would not update in IPR render
[C4D] Reverted to the default viewport environment map when adding a new RS Sun&Sky Object
[C4D] Fixed a bug where normal mapping would not work reliably with substance material
[Maya] Added new Physical Sun & Sky object with enhanced contribution controls, replacing the legacy Sun & Sky object
[Maya] Added support for rendering procedural clouds with the new Redshift Cloud Object
[Maya] Fixed Unit Conversion node not working as expected
[Maya] Fixed RS Proxy node distance units visibility checkbox glitching when multiple proxy nodes are present in the scene
[Max] Added "View Image" button to RS Bitmap for editing cropping and placement
[Max] Added support for RS Sun and Sky in Redshift Light Lister
[Max] Fixed bug in RS Clouds where the Horizon Blend parameter had no effect
[Max] Fixed bug in RS Clouds where the Shape parameter was missing
[Max] Fixed bug in RS Sun and Sky where the Model parameter had no effect and the light used Preetham et al by default
[Max] Fixed bug where AOVs and Denoise buffers are created when using Redshift RT
[Max] Fixed bug where Post Effects are disabled when Samples viz mode is turned on when using Redshift RT
[Max] Fixed bug in the attribute name combo box for RS User Data shaders where RS Name ID and RS Object ID don't work
[Max] Fixed bug introduced in 2026.0.0 that caused incorrect shading when using RS Jitter or RS Random Color/Material Switch
[Max] Fixed bug introduced in 2026.0.0 where texture baking did not work
[Max] Fixed bug where Redshift can crash while texture baking if scene uses Irradiance Cache or Irradiance Point Cloud
[Max] The Coverage parameter of RS Clouds is now presented as a percentage
[Houdini] Added support for Houdini 21.0.440
[Houdini] Added light and volume samples params to the Sun & Sky node
[Houdini] Added support for SOP transformations motion blur to the procedural packed alembics
[Houdini] Fixed bug that could affect the IPR updates while switching the light nodes display flag
[Hydra] Added support for Solaris 21.0.440
[Hydra] Added light and volume samples params to the Sun & Sky LOP
[Hydra] Fixed bug that could affect the viewport rendering of the sun&sky and clouds
[Hydra] Fixed bug that could affect the default on state of the EnableOptiXRTOnSupportedGPUs render option
[Hydra 2.0] Fixed bug that could affect the rendering of some materials
[USD Procedural] Added new build for USD 25.05 to be used with Houdini 21.0
[Katana] Added light and volume samples params to the Sun & Sky light
[Metal] Fixed a crash that happened when using textures with very specific resolutions
[Metal] Fixed an issue that caused small artifacts due to poor numerical precision
[Metal] Fixed a crash when VRAM adjustment is needed
[Metal] Fixed an issue where IPR could cause slower rendering switching to bucket mode
[Metal] Fixed an issue where IPR rendering causes artifacts when switching to bucket mode
[Metal] Fixed an issue where artifacts would occur while bucket rendering with hardware ray tracing
[Metal] Added precompiled kernels for macOS Tahoe to reduce startup time. Note that there are still known rendering artifacts when running on Intel CPU + AMD GPU systems on Tahoe.
[CPU] Fixed a crash introduced in 2026.0.0 when using textures for bumpmapping
[All] Fixed old bug that caused the TriPlanar node to not refresh in IPR when toggling "sameTextureOnEachAxis"
[All] Fixed a bug that caused artifacts when plugging node parameters with data of incompatible type
[All] Fixed old bug that would incorrectly convert 2 channel greyscale textures (YA format)
[All] Fixed a crash when using a material, with sprite nodes, multiple times on the same mesh
[All] Fixed old bug that caused texture corruption when projecting the texture based on other textures or raytracing based shaders
[All] Fixed old bug where materials with raytracing based shaders depending on other raytracing based shaders, were accepted and resulted in artifacts
[All] Fixed a crash introduced in 2026.0.0 when using a ray-switch node as a headnode
[All] Fixed a bug introduced in 2026.0.0 that caused bumpmapping to be too strong when using textures that are projected by other textures
[All] Fixed a bug that could cause crashes and wrong renderings when rendering a proxy with OSL shader that references string user data
[All] Fixed a crash when using many puzzlematte AOVs, that had the following error message: "Range for 'm_IntersectionResults_matidMOD' has been overwritten (by later recursions) and was not marked as 'WillBeReadInTheFuture'"
[All] Fixed a bug where the override unit of a proxy would be ignored when contained in another proxy
[All] Fixed a recently introduced bug that could cause bogus UV mapping to appear when sampling textures with missing UVs
[All] Fixed Camera Map shader not working on macOS when a specific camera is picked
[All] Fixed a bug introduced in 2026.0.0 that broke animations of 2D Maxon Noises
[All] Fixed a bug where a frame rate of 0 would break the cloud rendering
[All] Fixed a bug that caused Camera Map projection to be broken when a scene unit other than cm was used
[All] Fixed a bug that caused incorrect volume shading when proxy is exported before rendering happens
[All] Fixed a bug that caused inconsistencies when a standard volume shader is assigned to multiple volumes
[All] Fixed a bug that caused incorrect cloud ligthing and sky sampling in 3ds Max
[All] Eased the rules for rstexbin re-processing when it attempts to detect legacy/broken "YA" format (introduced in 2026.0.0)

2026.0.0 (2025.09)

Release Notes

[C4D] Improved extraction performance for meshes
[C4D] Dropped support for Cinema 4D R25 and S26
[C4D] Fixed issue where soloing the Color Node did not work as expected
[C4D] Fixed the Color Node input to ramp knots' input color
[Maya] Added RSMAYAMATERIALVIEWER_ENABLED environment variable to explicitly enable Material Viewer (experimental)
[Maya] Added Material Viewer Progressive Passes parameter
[Maya] Added Redshift Preferences to Maya Preferences menu
[Maya] Added USD Variants support
[Maya] Fixed USD Procedural library not being properly unloaded at Maya shutdown
[Maya] Fixed User Data String not working as expected
[Maya] Fixed bug with proxy material popup copy menu not working in Maya2025 and 2026
[Maya] Fixed multiple UI glitches with USD Variants selection
[Maya] Fixed overrides flags for Alembic proxy node
[Maya] Fixed Material Viewer sometimes becoming stuck
[Maya] Fixed .usdc files being not visible in file selector in proxy node
[Max] The "render mesh" is now always requested from objects, except when using Poly objects with Redshift tessellation
[Max] IPR now updates Redshift Proxy and Volume Grid objects
[Max] IPR now updates tyFlow objects when using particle interface
[Max] IPR now updates Forest Pack objects
[Max] IPR now updates in response to adjusting UVW modifiers
[Max] IPR now updates in response to adjusting Hair and Fur WSM modifiers
[Max] IPR now applies changes to Trace Sets
[Max] Increased responsiveness to scene changes during IPR to reduce input lag
[Max] Class rename: "Redshift Sun" is now "RS Sun" - scripts should use the internal name "rsSunLight" to avoid version compatibility issues
[Max] Modifying viewport display modes for Proxy and Volume Grid objects no longer causes IPR to refresh
[Max] Fixed bug introduced in 2025.6.0 that caused 3ds Max to crash on startup when running in command-line mode (e.g. Backburner, Deadline)
[Max] Fixed bug where hiding/showing lights during IPR could cause 3ds Max to crash
[Max] Fixed bug where some modifiers can cause Redshift to freeze 3ds Max when rendering with motion blur enabled
[Max] Fixed bug where TurboSmooth-modified objects switch to using viewport iterations when reconverting the mesh
[Max] Fixed bug that could cause constant IPR refreshes when rendering with motion blur enabled
[Max] Fixed bug where mode-dependent parameters are not hidden in the UI for RS Standard Volume
[Max] Identical Trace Sets are now shared between objects when rendering, to reduce VRAM usage
[Max] Improved detection of mesh changes to reduce unnecessary IPR refreshes when interacting with the modifier stack
[Max] Cleaned up UI for Redshift Volume Scattering and added sliders for easier control of parameters
[Houdini] Added support for Houdini 20.5.684 and dropped support for 20.5.584
[Houdini] Added support for promoted subnet inputs to the shader nodes
[Houdini] Fixed bug that could affect the viewport IPR camera while scrubbing
[Houdini] Fixed bug that could affect the FOV of the render region in the Houdini render view
[Hydra] Added support for Solaris 20.5.684 and dropped support for 20.5.584
[Hydra] Added support for a large number of new primvar overrides to the point instancer based lights instancing
[Hydra] Added support for single-layer EXRs to the proxy scene files using the "{AOV}" tag to configure the file names
[Hydra] Added support for .jpg, .tiff, and .png image output formats to the proxy scene files
[Hydra] Added support for new cryptomatte and deep AOVs workflow by using "redshift" as render product type
[Hydra] Fixed bug that could affect the rendering of deep and cryptomatte files at the same time
[Hydra] Fixed bug that could affect the rendering of assets with tagent attributes and polygon normals or ngons
[Hydra] Fixed bug that could affect the rendering exposure of the filmic cameras in "Use Solaris camera focus/fstop" mode
[Hydra] Fixed bug that could affect the camera's motion blur outside the keyframe ranges
[Hydra] Fixed bug that could affect the rendering of ngons with reverse winding order
[USD cmdLine] Added support for product names that include time samples
[USD cmdLine] Added support for rendering single-layer EXRs and additional image file formats
[USD cmdLine] Added '-single-layer' option to force the rendering of single-layer EXR files
[USD cmdLine] Added '-oif' option to fully override the image output path/file for all AOVs. It supports the "{AOV}" and "%04d" tags
[USD cmdLine] Fixed the '-oip' option to work with output files from render product names
[USD cmdLine] Fixed bug that could affect the rendering of .usd files including proxy or procedural objects
[USD Procedural] Fixed a crash on exit which was affecting several DCCs
[USD Procedural] Fixed bug that could affect the IPR performance on some DCCs like Maya
[Katana] Fixed crash on exit in scenes with Redshift volume or proxy objects
[All] Fixed a bug that prevented using negative values in volume vector grids that are loaded from memory
[All] Fixed a bug in physical sun/sky that caused the radiance values to be too low
[All] Fixed a bug in light shader, that caused incorrect light intensity for point and spot lights
[All] Added support for dx() and dy() functions in OSL
[All] Upgraded bumpmapping to support most shader combinations
[All] Fixed an issue that caused bumpmapping to be viewport resolution dependent
[All] Fixed a bug that caused shaders with specific displacement outputs to not support autobump
[All] Added support for distance unit handling. This allows to have physically correct handling of lights, volumes, geometry and proxies for different scene sizes
[All] Added support for rendering procedural clouds with the new Redshift Cloud Object.
[All] Added Distorter shader, which was only available in C4D, for all supported DCCs
[All] Replaced the global fog attenuation with a "Viewing Distance" parameter
[All] Fixed a bug that caused a crash when the sprite shader is used in IPR with bucket rendering mode
[All] Fixed a bug that caused light tracesets to be broken in animations
[All] Fixed a bug that caused unnecessary vram resets when multiple sky objects with different sky models are used
[All] Fixed old bug that would incorrectly convert 2 channel greyscale textures (YA format)
[Alembic Procedural] Fixed crash from assets with zero scale transformations

2025.6.0 (2025.07)

Release Notes

[C4D] Fixed regression in the viewport representation of bump-maps
[C4D] Fixed bug in the viewport representation of texture nodes when using Raw as their explicit color-space
[C4D] Fixed bug in the handling of C4D volumes when used in conjunction with the Connect object
[C4D] Fixed a bug where UVWs did not update in the IPR when modifying the tag data.
[C4D] Fixed an issue with time value inaccuracies in texture animation settings.
[C4D] Fixed bug where changing a polygon selection would not update the IPR
[C4D] Fixed bug where asset of a single node would not render
[Maya] Added Redshift User Data String node
[Maya] Fixed bug when it was possible to run denoiser from plugin when RT render engine is selected
[Maya] Fixed crash happening sometimes when opening new scene
[Maya] Fixed bug with Material View not updating after IPR finishes rendering
[Max] Added DirectX 11 viewport preview for Dome Light with OCIO support and realtime color adjustment -- requires 3ds Max 2023 or later
[Max] Fixed bug where it was impossible to specify empty trace sets using inclusive mode on an object
[Max] Fixed bug that could cause latent scene corruption when referencing Redshift material/texmap parameters in expression controllers - see https://redshift.maxon.net/topic/52612
[Max] Fixed bug where Redshift material/texmap parameters referenced in expression controllers are lost when the scene is loaded
[Houdini] Added support for OBJ params in SOPs using the new "Redshift Object Params" SOP node
[Houdini] Fixed several bugs that could affect the overscan feature
[Houdini] Fixed IPR updating problems and crashes while creating sun lights
[Hydra] Added support for "%04d" frame numbering style tags to the output files, including cryptomatte or deep EXR files
[Hydra] Fixed bug that could affect the IPR updates from the widths attributes
[Hydra] Fixed bug that could affect the IPR updates of the global environment shader
[Hydra] Fixed bug that could affect the bokeh image parameter
[Hydra] Fixed bug that could affect the relative image, cryptomatte or deep output files
[Hydra] Fixed bug that could affect the camera map projection FOV from picked cameras
[USD cmdLine] Added support for "%04d" frame numbering style tags to the output files
[USD cmdLine] Added support for EXR output file names evaluated directly from the render product name
[USD cmdLine] Added support for default cryptomatte and deep EXR file names if not configured in the render settings
[Blender] Added a method to fix undefined node sockets on scene load.
[Blender] Expanded new AO panel with a couple of new params that override the same ones from 'Commons Lighting params' panel.
[Blender] Added new options to compose the file output name to the interface of 'Scene As Proxy', 'Render to Image File' and 'Object to Proxy'
[All] Fixed a bug that caused wrong lighting result with nested vdb volumes
[All] Fixed a bug that caused a crash when the output of a store to AOV node is used for custom AOVs
[All] Fixed a bug in the Flakes shader that caused flakes to "swim" in Object mode, when mesh gets deformed
[All] Fixed a bug in the Flakes shader that caused flakes to show local correlation
[All] Fixed a recently introduced bug that could cause wrong cryptomatte object IDs in some DCCs
[All] Significantly improved Flakes shader performance
[All] Upgraded OpenColorIO to version 2.4.2
[All] Shader-driven Sprite node now works with scalar shader inputs
[All] Fixed a bug that could cause random crashes when exporting meshes
[CUDA] Added Hopper and Blackwell data center GPU support
[Alembic Procedural] Added support for integer vertex or user data attributes

2025.5.0 (2025.06)

Release Notes

[C4D] Improved the quality of the viewport material baking
[C4D] Added support previewing UDIM/UVTILE textures in the viewport (requires C4D 2025.3)
[C4D] Improved the quality of per-strand-point attributes (like colors), in hair objects and curves in hair strand mode
[C4D] Improved the viewport representation of portal lights
[C4D] Fixed bug where certain math nodes would have have a blank preview in the node editor
[C4D] The minimum required version for the 2025 plugin has been increased to Cinema 4D 2025.3
[Maya] Fixed bug with wrong lighting in Material View caused by switching from IBl to off (no IBL)
[Maya] Material Preview camera FOV now matches that of Arnold and Maya Hardware renderes
[Maya] Improved responsiveness of material parameters controls
[Houdini] Fixed more issues related to hair attribute stability and hitting memory limits prematurely
[Houdini] Added support for Houdini 20.5.584 and dropped support for 20.5.487
[Houdini] Added support for op: and opdef: textures to the lens distortion parameter
[Houdini] Added denoise flag to the custom AOVs
[Houdini] Fixed bug that could affect some buckets of the the MPlay AOVs
[Houdini] Fixed bug that could affect the rendering of proxy scenes in progressive mode with denoising
[Hydra] Added support for Solaris 20.5.584 and dropped support for 20.5.487
[Hydra] Added support for USDZ rendering (Solaris 20.5 and above)
[Hydra] Added support for op: and opdef: textures to the camera bokeh, backplate, and lens distortion parameters
[Hydra] Fixed bug that could affect the primvars dirty state from disabled nodes
[Hydra] Fixed bug that could cause a crash from objects without any points
[Hydra] Fixed bug that could affect the IPR updates or sequence rendering of animated OpenVDB assets
[Hydra] Fixed bug that could affect the denoising if the color rendervar is not the first one
[Hydra] Fixed default state of the refraction override param in the Physical Sky LOP
[USD cmdLine] Fixed bug that could affect the Windows UNC image file output paths
[USD Procedural] Fixed bug that could affect the material overrides in objects with instances
[USD Procedural] Fixed bug that could affect the rendering of .usd assets with RS Proxy primitives
[USD Procedural] Added support for USDZ assets rendering (USD 24.03 or above)
[Katana] Fixed bug that could affect the default colors of the Pavement shader
[Katana] Fixed bug that could affect the normals of some polygons with inverted winding order
[Blender] Added support for Blender PointCloud objects, created using the Geometry nodes modifier. These objects are exported as RS Pointcloud objects.
[Blender] Fixed a fatal error at the end of the IPR mode, related to the elimination of invalid tracesets.
[All] Fixed a bug that would cause a crash when disabling meshes in proxies
[All] Fixed a bug that prevented using negative values in vector volume grids
[All] Fixed a bug that caused black spots in volumes
[All] Fixed a bug that caused incorrect transformations at certain object orientations when using the OSL transform() function
[All] Fixed a bug that caused a crash with volume grids that have 0 voxels
[All] Fixed a bug introduced recently for shader-based sprite cut-outs that could cause the loss of the stencil map after VRAM reset
[All] Fixed a bug that could cause artifacts for shader-based sprite cut-outs that are instanced
[All] Fixed an issue that could cause the appearance of seams when using anistropic specular in the OpenPBR material
[All] Upgraded OIDN to version 2.3.3
[Cuda] Added Blackwell support (including Altus and OIDN)
[Alembic Procedural] Added flag to force the tessellation of any polymesh object, not only subdmeshes

2025.4.1 (2025.04)

Release Notes

[Maya] Added support for Maya 2026
[Maya] Fixed bug with USD Proxy not rendering correct frame of animated USD file.
[Maya] Fixed bug with USD Proxy having invalid material when changing the Material Mode from "From Proxy" to "From Scene" and then back.
[Max] Added support for 3ds Max 2026
[Max] Added support for RS Surface Tangent shader
[Max] Fixed bug where emission did not work when using 3ds Max built-in OpenPBR Material
[Houdini] Added support for Houdini 20.5.550 and dropped support for 20.5.445
[Hydra] Added support for Solaris 20.5.550 and dropped support for 20.5.445
[Katana] Fixed bug that could affect the volume shader ramp parameters with default values
[Blender] Added support for Blender 4.4. You must use version 4.1.0 of our plug-in
[All] Fixed bug introduced in 2025.4.0 that broke specular anisotropy when driven by procedural uv-based tangents
[All] Fixed potential race-condition bug that could cause corrupted shader-driven sprite node textures
[All] Reverted bug fix that went into 2025.2.0, which inadvertently prevented user-data driven particle texture sampling from working
[All] Added full support for "Fresnel Affects Shadow" advanced option in new OpenPBR material

2025.4.0 (2025.04)

Release Notes

[C4D] Improved the viewport and export fidelity of Nodes materials through automatic baking. This can be enabled through an new option the preferences
[C4D] Fixed bug on Linux that prevented material import from working when using 3rd-party object formats such as GLTF
[C4D] Fixed bug causing horizontal stripes in shader previews, when using small scene units
[C4D] Fixed bug causing blank shader previews in Nodes under certain conditions
[C4D] Fixed bug causing missing or incorrect UVs when using the node Solo option
[C4D] Fixed bug causing to incorrect blur in Pyro volumes with velocity (Cinema 4D 2025)
[C4D] Fixed a UI glitch in the RSLight object list in the Project tab
[C4D] Fixed crash when generating tangents under certain conditions
[C4D] Simplified the material preview modes in the preferences
[Maya] Added Redshift Material View to Hypershade
[Maya] Added support of Alembic files in RS Proxy
[Maya] Support frame offset for USD Proxy.
[Maya] Support material override for USD Proxy.
[Maya] Support visibility flags overrides for USD Proxy.
[Maya] Support ObjectID override for USD Proxy.
[Maya] Fixed USD procedural n-gons displayed in viewport sometimes having wrong normals.
[Maya] Handle USD procedural having invalid file path.
[Maya] Fixed USD procedural bbox not updating.
[Maya] Fixed crash caused by some USD files missing certain data.
[Maya] Fixed .usda files being not visible in file selector in proxy node.
[Max] Added support for Autodesk OpenPBR Material
[Max] Changed default values for area lights: "Block Rays" is now off and "Camera Contribution" is now zero
[Max] Fixed bug where displacement is ignored when using RS Material Output
[Max] RS Scene Converter: Added tool to convert RS Material to RS Standard Material
[Max] RS Scene Converter: Support VRayMtl to RS Standard Material
[Max] RS Scene Converter: Support CoronaLegacyMtl to RS Standard Material
[Max] RS Scene Converter: Support CoronaPhysicalMtl to RS Standard Material
[Max] RS Scene Converter: Support CoronaColorCorrect
[Houdini] Added support for Houdini 20.5.522 and dropped support for 20.5.410
[Houdini] Added support for variants to the USD Procedural node
[Houdini] Added support for multiple materials override to the USD Procedural node
[Houdini] Added support for vertex attributes on hair curves
[Houdini] Added support for IPR updates of the Alembic procedural OBJ level options
[Houdini] Changed default values for area lights: "Camera Contribution" is now zero
[Houdini] Updated GUI of the volume velocity grids options to handle vector or scalar grids easily
[Houdini] Fixed bug that could affect the rendering of packed procedural alembics from multiple threads
[Houdini] Fixed IPR crash after deleting all procedurals in the scene
[Houdini] Fixed several issues in the viewport Render Region tool
[Hydra] Added support for Solaris 20.5.522 and dropped support for 20.5.410
[Hydra] Added support for variants to the Redshift USD Procedural LOP
[Hydra] Added support for multiple materials override to the Redshift USD Procedural LOP
[Hydra] Added support for vertex attributes on hair curves
[Hydra] Added support for rendering SOP volumes and COP/Copernicus textures on MacOS
[Hydra] Changed default values for area lights: "Camera Contribution" is now zero
[Hydra] Updated GUI of the volume velocity grids options to handle vector or scalar grids easily
[USD Procedural] Added support for variants
[USD Procedural] Added support for .usd file content updates
[USD Procedural] Added support for assigning and overriding materials
[USD Procedural] Improved IPR transformations update performance, which was previously done by reloading the assets
[USD Procedural] Fixed bug that could cause a crash while rendering the same asset from several procedural instances
[Katana] Added support for vertex attributes on hair curves
[Katana] Changed default values for area lights: "Camera Contribution" is now zero
[Katana] Fixed bug that could affect the material resources if used in several assets
[Blender] Added 'User prefix' and 'Frame padding' options to 'Scene as Proxy' and 'Object to proxy' interface panels.
[Blender] We added new RS Proxy items lists to the Proxy import interface that allows the user selecting the objects they want to exclude from the render.
[Blender] Changed default values for area lights: "Block Rays" is now off and "Camera Contribution" is now zero.
[All] Added rotation parameter to Maxon Noise shader
[All] Added support for the OpenPBR material surface shader
[All] Added new energy conserving Oren-Nayar diffuse model "EON" to Standard Material
[All] Added new SurfaceTangent query shader, to complement the OpenPBR shader
[All] Fixed a bug that would cause a crash when failing to load proxies
[All] Fixed a bug that prevented volume motion blur to be correctly calculated for proxy files
[All] Fixed a bug that caused a crash when a volume attribute node is connected to Standard Volume displacement scale input
[All] Fixed a bug that caused crash when enabling/disabling volume grids
[Alembic Procedural] Added support for vertex attributes on hair curves
[Alembic Procedural] Fixed crash from assets with velocity attributes when the motion blur is disabled

2025.3.0 (2025.02)

Release Notes

[C4D] Fixed bug where the Reference node in Nodes materials, may produce inconsistent results under certain conditions
[C4D] Fixed bug where scroll-bars in the RenderView UI would appear stuck
[C4D] Fixed bug where certain changes to the Matrix object would not be detected during IPR
[C4D] Fixed bug where unchecking the Source Objects Visible option in the Particles section of the RSObject tag would not be effective under certain conditions
[C4D] Fixed naming inconsistency when specifying the velocity grid names for C4D Volumes through the RSObject tag's Motion Vector section.
[C4D] Improved the RSObject tag, which will now detect the velocity grids names automatically when first created on C4D volume objects
[Maya] Added support of USD files in RS Proxy
[Maya] Fixed RS Proxy file not always updating displayed mesh when file name is changed
[Maya] Fixed denoiser settings in RV not being synced with denoiser settings in RSOptions
[Maya] Fixed bug with having wrong color when using multiple color set
[Maya] Fixed crash triggered by empty color set
[Maya] Enabling Motion Vectors AOV also enables legacy motion blur sampling and fake 2-step transformation
[Max] Fixed bug where background is not applied to saved render output when in composite modes
[Max] Fixed bug in RS Random Material Switch and RS Random Color Switch where the weight control is not visible when there are 10 inputs
[Houdini] Added support for Houdini 20.5.487 and dropped support for 20.5.370
[Houdini] Added support for nested camera switcher nodes
[Houdini] Added new option in the RenderView Houdini tab to copy the render region to the current ROP camera
[Houdini] Added support for rendering the AOVs to MPlay even with postfx or denoising enabled
[Houdini] Added support for the OIDN denoiser to the viewport IPR
[Houdini] Updated color and icons of the RS light nodes
[Houdini] Fixed bug that could affect the IPR updates after rewiring shader nodes, especially after any Undo
[Houdini] Fixed bug that could affect the Unreal and Houdini Engine assets with Redshift object parameters
[Houdini] Fixed bug that could affect the MPlay AOVs while rendering in progressive mode
[Houdini] Fixed bug that could affect the RenderView and camera node params sync while working with relative camera paths
[Houdini] Fixed precision issue while computing the camera FOV from the screen window parameters
[Houdini] Fixed crash after closing the RenderView while rendering to Disk/MPlay
[Hydra] Added support for Solaris 20.5.487 and dropped support for 20.5.370
[Hydra] Added support for the Visualize VOP node in Solaris for debugging shader networks
[Hydra] Added support for up to 64 uv maps, previously limited to 8
[Hydra] Improved OIDN viewport denoising done from the first sample
[Hydra] Fixed bug that could affect the updating of the texture nodes with empty file strings
[Hydra] Fixed bug that could affect the "Use Velocity Grids" object settings option
[Hydra] Fixed bug that could affect the Redshift LOP custom AOV options
[Hydra] Fixed bug that could affect the postfx and denosing of the proxy scenes
[Hydra] Fixed rare bug that could affect the pre-processing of some textures
[Hydra] Fixed bug in the RS PhysicalSky HDA transformations
[Hydra] Fixed bug in the Redshift LOP node EXR compression options
[Hydra] Fixed bug in the Redshift LOP node option to disable the motion blur
[Hydra] Fixed the edit menu param types in the Solaris nodes Redshift parameters
[Hydra] Updated the Proxy, Alembic and USD procedurals primitives file param type from string to asset
[Hydra] Added camera selector switch to the Redshift LOP node
[Hydra] Added selection arrow button to the Redshift LOP node Default Contour param
[USD cmdLine] Added support for denoising and postfx
[USD cmdLine] Added support for the UsdPreviewSurface materials
[USD cmdLine] Fixed bug that could affect the image file output relative paths
[USD cmdLine] Fixed bug that could affect the alpha channel of the main beauty AOV
[USD cmdLine] Fixed bug that could affect rendered frame number
[USD cmdLine] Fixed several "Coding Error" messages
[USD Procedural] Added new build "USD_24.08" compiled against the 24.08 USD libs included in the core
[USD Procedural] Added option to select the USD Purpose to be used in the viewport
[USD Procedural] Added support for bouding box viewport preview for point instancers
[Katana] Added option to the RedshiftObjectSettings node to reverse the polygons winding order
[Katana] Fixed bug that could affect the denoising default settings
[Blender] Fixed unexpected Blender crash due incompatibilities between 'Diffuse Filter' AOV and 'Hair Min Pixel Width' in 'Progressive' render mode.
[Blender] Fixed fatal error on Mac with Blender versions 3.6.x when the 'GPU Backend' option was not 'OpenGL'.
[Blender] Fixed a bug with camera object scaling that affected Clip Star and Clip End values.
[Blender] Added 'Frame padding' option to Image settings panel. This allows the user to define the number of padding characters for the frame number in the output file name.
[RT] Improved sampling of rectangle lights
[All] Added Volume Extinction and Anisotropy falloff options to the volume shaders
[All] Added displacement option to the Standard Volume shader
[All] Removed background option for dome lights and visible options for area lights
[All] Added camera contribution scale option to area and dome lights, "Blocks Rays" option to area lights and legacy "Area Light Visibility" option
[All] Fixed a bug where the state node with object transformation space would yield incorrect results in the direct lighting
[All] Fixed a bug where the opacity input of area lights was ignored by indirect lighting rays, introduced in 3.6.00
[All] Fixed ancient bug that could prevent mesh trace sets from refreshing in IPR mode
[All] Fixed a bug where transparent objects would cast an opaque shadow for textured dome lights, introduced in 3.6.00
[All] Fixed a recently introduced sprite texture dimension limitation that would affect CUDA/HIP/CPU platforms
[All] Fixed a bug that would prevent correct shader updates when using Standard Volume shader node
[All] Fixed a bug that would cause a crash when reading color user data via the integer user data node
[Alembic Procedural] Added support for MacOS Apple Silicon

2025.2.0 (2024.12)

Release Notes

[C4D] Fixed alpha output of Distorter shader
[C4D] Added support for physical units to the Substance Node
[C4D] Added support tri-planar projections directly in the Substance Node
[C4D] Improved the material picking in the RenderView which will now select all relevant materials when stacking is used on a given face
[C4D] Fixed bug in the denoiser overhead control, resulting in the denoiser being applied too often in some cases
[C4D] Fixed bug with Node materials failing to access Vertex Map tags within X-Refs
[C4D] Fixed bug where the RS Light opacity texture would be ignored from "Save Project with Assets"
[C4D] Fixed bug where material stacking on certain objects would lead to an assertion
[C4D] Fixed bug in the tangent generation that could lead to a crash under certain conditions
[C4D] Fixed bug leading to an assertion when using a color attribute in conjunction with the new particle system in C4D 2025.
[C4D] *** IMPORTANT *** The minimum required version for the 2025 plugin has been increased to Cinema 4D 2025.1
[Maya] Fixed crash triggered by having an empty mesh in the scene
[Maya] Fixed IPR "looping" (restarting for no good reason) when MB is enabled
[Maya] Fixed commandline render having wrong output file extension when run from Mayapy
[Maya] Fixed renaming OSL shaders breaking UI
[Maya] Fixed referenced OSL shaders having broken UI
[Maya] Modified unified sampling threshold slider to behave logarithmically
[Max] Added toggles that allow RS Material Output ports to be enabled or disabled
[Max] Fixed bug where CausticsEnabled render property exposed to MAXScript did not work
[Max] Fixed bug where CausticsOverridesReflectionsEnabled and CausticsOverridesRefractionsEnabled render properties exposed to MAXScript did not work and also had the wrong name
[Max] Fixed bug where 3ds Max could crash when loading a render preset
[Houdini] Added support for Houdini 20.0.896 and 20.5.410 and dropped support for 18.5.759 and 20.5.278
[Houdini] Fixed bug that could affect the camera's overscan offsets
[Houdini] Fixed bug that could affect the RenderView noisy AOV when the denoise overhead is 0
[Houdini] Fixed crash when rendering USD or user procedural objects without a valid file
[Houdini] Fixed rare crash when reloading or creating new scenes if Redshift is installed
[Houdini] Fixed issue in the Altus denoiser, that has to be disabled in progressive rendering mode
[Houdini] Fixed bug that could affect the Altus denoiser additional buffers output files
[Hydra] Added support for Solaris 20.0.896 and 20.5.410 and dropped support for 18.5.759 and 20.5.278
[Hydra] Fixed bug that could affect the motion blur of camera's focal length parameter
[Hydra] Fixed bug that could affect the cmd line rendering of proxy scenes in progressive mode with denoising enabled
[Hydra] Fixed bug that could affect the aspect ratio conform policy parameter
[USD Procedural] Renamed procedural deploy directories as "Solaris_xx.xx"
[USD cmdLine] Added redshiftUsdCmdLine tool used to read .usd files and render them to disk using Redshift
[Blender] Fixed inconsistencies in the behavior of the mesh flag's 'Self Shadows'.
[Metal] Fixed a bug where dispersion was incorrect
[Metal] Added support for macOS Sequoia
[RT] Improved first frame denoising, particularly in tough scenes
[RT] Improved convergence and firefly handling
[RT] Improved Anti-Aliasing esp. for bright light edges
[RT] Added new Global Light Sampling option, which improves convergence and allows thousands of (quadratic falloff) lights
[All] Removed license checks from altus-cli
[All] Added new Random Color Switch and Random Material Switch shaders
[All] Fixed a bug where area light opacity would not be applied for light group AOVs
[All] Fixed a bug where proxies with multiple mesh lights were not rendered correctly when instanced as render instances
[All] Fixed a bug where thin walled surfaces were incorrectly using the new transmission direct lighting introduced in 2025.0.0
[All] Fixed shader resource (textures etc) leak, introduced in 3.6.00
[All] Fixed transmission direct lighting legacy compatibility issue introduced recently for portal lights
[All] Fixed a bug where a TriPlanar node wired into another projection node would cause artifacts
[All] Fixes for potential instability on CPU and Metal M3 devices
[All] Fixed a bug with transmission direct lighting in combination with area light spread, introduced in 2025.0.0
[All] Update to CUDA 12. This requires at least driver version 551.78 on Windows and 550.54.15 on Linux.
[All] Added backfacing options to Contour shader
[All] Fixed relatively recently introduced bug that could cause a crash when low on VRAM
[All] Added support for OIDN 2.3.0 bringing support for GPU-based denoising for CUDA, HIP and Metal (for Apple Silicon)
[All] Fixed artifacts when rendering the Toon Material on Apple Silicon devices
[All] Fixed a bug where a camera that's very close to the volume bounding box limit, would create GI artefacts
[All] Fixed a bug in the displacement shader when deformation blur is enabled, with noise or uv-projection shaders
[All] Fixed a bug in the displacement shader that caused incorrect tri-planar projections in world or reference space
[All] Fixed a bug that could cause VRAM resets (and laggy IPR) after deleting textured objects

2025.1.0 (2024.10)

Release Notes

[C4D] Added support for Light Materials in Nodes
[C4D] Material previews in Nodes will now use a 2D plane for certain shaders
[C4D] Fixed crash when replacing the original objects after a proxy is exported
[C4D] Fixed bug leading to incorrect RSLight object handles in the viewport
[C4D] Fixed bug in TeamRender single-frame mode, where an incorrect image file extension was used for the Multi-Pass image
[C4D] Fixed bug where the order of images added to a MultiShader from a folder, was inconsistent
[C4D] Fixed bug leading to redundant baking of substances under certain conditions
[Maya] Added support for Maya native standardSurface shader
[Maya] Added support for Maya 2025 on Linux
[Maya] Fixed crash when xgen was loaded after redshift on linux and macOS
[Maya] Fixed bug with redshiftGetRedshiftOptionsNode() message being spammed in the script editor under certain scenario
[Max] Fixed bug where GI was disabled by default on instanced objects
[Max] Fixed bug where RGBA values were not saved for RS Distance, RS MatCap and RS Color Correct shaders
[Max] Fixed Deadline issue: Using Cryptomatte or Beauty AOVs in a scene caused other AOVs to receive incorrect filenames
[Max] Fixed Deadline issue: Beauty AOV filenames would receive no frame numbers
[Max] Fixed Deadline issue: Cryptomatte AOV filenames would not use the correct frame number format
[Max] Fixed Deadline issue: Unused buffers would be written to file for AOVs with global light group set to 'None' or 'Remainder'
[Max] Fixed Deadline issue: When Redshift EXR Output is enabled, some render output files could be subsequently overwritten by Deadline
[Max] Fixed Deadline issue: When Redshift EXR Output is enabled, the main output filename would not use the correct frame number format
[Houdini] Added support for the "REDSHIFT_OVERRIDE_LOG_LEVEL" env. variable to override the RS log error level in a range of 0 to 6
[Houdini] Fixed bug that could affect motion blur of the volume instances
[Houdini] Fixed a crash when rendering instances of volumes without valid grids
[Hydra] Added support for live or single process updates of the UsdSkel deformations
[Hydra] Added support for volume scattering tint shaders from nodes connected to the "Volume" output
[Hydra] Fixed bug that could affect the stability of the Jitter shader in "Name ID" mode
[Hydra] Fixed bug that could affect motion blur of the volume instances
[Hydra] Fixed bug that could affect the EXR layer names of the exported proxy scenes
[Hydra] Fixed bug that could affect the AOVs denoising of the exported proxy scenes
[Hydra] Fixed problem in the Solaris 20.5.332 DomeLight Redshift parameters
[Katana] Fixed several bugs that could affect the volumes and volume instances motion blur
[Katana] Fixed bug that could affect the live rendering feature on Katana 6.5
[Blender] Completed Distance shader implementation by adding support for 'traceset' parameter.
[Metal] Fixed an issue that caused VRAM resets in IPR when using dome lights on M3 Pro/Max
[RT] Improved light sampling
[All] Added a new alternative shading normal adaptation technique
[All] Fixed texture mapping for sphere and cylinder lights and added legacy switch option for older scenes
[All] Added "Tile Scale Bias" option to the Tonemap Pattern shader for the Custom mode
[All] Fixed a bug where displacement would be broken on HIP devices
[All] Fixed a bug where loading certain PSD files would lead to a hang
[All] Upgraded OpenImageIO to version 2.5.15
[All] Fixed an OptiX-related issue where zero size particles with motion didn't render correctly
[All] Fixed shader resource (textures etc) leak, introduced in 3.6.00
[All] Added new interior color option for Distance shader
[All] Fixed a bug where the projection node would produce incorrect results on HIP devices
[All] Upgraded OpenVDB to version 10.1.0
[All] Fixed a bug where using spot light with a non-attenuating Volume Scattering would cause artefacts
[All] Fixed an OptiX-related crash during startup when certain legacy Nvidia drivers are used
[Maya+RT] Fixed a bug where hair shadow was being rendered in front of objects

2025.0.0 (2024.09)

Release Notes

[C4D] Improved the image file UI, which will now show the effective color-space when Auto is selected. Also improved the performance for large images
[C4D] Picture Viewer renders will now preview certain Post-FX types while a render is in progress
[C4D] Fixed crash when generating tangents, and addressed a performance regression
[C4D] Fixed crash when connecting nodes to the scale/rotation inputs of the Substance Node
[C4D] Fixed bug causing an incorrect channel being output by the Substance Node
[C4D] Fixed bug when rendering C4D volumes in conjunction with the Connect object
[C4D] Fixed bug where Pyro volume changes would not be detected by the IPR when first started
[C4D] Removed support for legacy C4D versions R21, S22, R23 and S24
[Maya] Fixed module file deploy on macOS for Maya 2024 and 2025
[Maya] Added support for GPU Cache scene object
[Max] Render View is no longer hidden in Network Render Server mode (Backburner, 3dsmaxcmd, etc) when the 3ds Max option Show Rendered Frame Window is enabled
[Max] Added missing toon ray contribution controls for area lights, dome and portal
[Max] Removed obsolete Photon GI render options from MAXScript interface
[Houdini] Added support for Houdini 20.5.278 and 20.5.332 and dropped support for 18.0.597
[Houdini] Added support for the new H20.5 Copernicus nodes
[Houdini] Added support for relative paths to the lights list shader parameters
[Houdini] Added support for IPR mesh updates from VOP nodes inside the Attribute VOP node
[Houdini] The REDSHIFT_DISABLE_VIEWPORT_RENDERING env. variable now disables all the viewport plugins as a fix for a rare crash when creating new scenes
[Hydra] Added support for Solaris 20.5.278 and 20.5.332 and dropped support for 18.0.597
[Hydra] Added support for the H20.5 Copernicus nodes to both interactive and batch rendering
[Hydra] Added support for the H20.5 point instancer based lights instancing
[Hydra] Several improvements and fixes to all the Redshift LOPs and Redshift options tabs
[Hydra] Fixed bug that could affect the rendering of ramp nodes in assets created with RS 3.5.xx
[Katana] Added support for Katana 6.5v3
[Katana] Fixed problem in the Material node logic to expose the Contour shader
[Blender] Fixed issue that enabled auxiliary AOVs for denoise even when Denoise engine are disabled.
[RenderView] Fixed issue where render region could be edited while disabled by Redshift RT
[Metal] Fixed a bug that caused broken Toon material on AMD GPUs
[Metal] Fixed a crash when using sprite nodes with hardware ray tracing
[HIP] Updated HIP Compiler on WIndows to 6.1.2. This updates the recommended driver for AMD GPUs to 24.Q3
[CPU] Fixed a bug causing point cloud primitives to not be rendered
[RT] Fixed a bug that led to raytracing based shaders not working for meshes with flipped normals
[RT] Improved sampling of raytracing based shaders
[RT] Improved light sampling, now scales to many lights
[All] Increased minimum Maxon App version from 2024.2 to 2024.5
[All] Added support for Brute Force caustics as an alternative to Photon-mapped caustics
[All] Brute Force caustics now kick in during progressive rendering
[All] Added global overrides for caustics to quickly enable/disable them scene-wide
[All] Overall caustics casting capability is now opt-in, instead of opt-out
[All] Added finer control for reflection/refraction caustics casting
[All] Fake/diffuse GI energy conservation for reflections automatically supplanted by caustics casting
[All] Standard Material now supports MIS direct lighting for transmission
[All] Fixed bug that caused incorrect light intensity when 'spread' is less than 1
[All] Fixed a bug that caused a crash reading proxy files with nested point cloud instances
[All] Fixed a bug that caused flickering when spot lights used with volumes
[All] Added option for scene wide Contour shader to render settings
[All] Added support for tonemapping to Contour shader
[All] Added alpha mask to Contour shader with pencil and fountain pen mode
[All] Added option for custom pattern to Tonemap Pattern shader
[All] Fixed a crash where volumes are rendered with IPR and continous update
[All] Added support for Volume Z-Depth AOV
[All] Fixed recently introduced Incandescent shader additive blending feature bug
[All] Fixed bug introduced in 3.6.02 that broke the 'Light and Shadow' tone-mapping mode
[All] Fixed aspect ratio compensation of contour thickness; existing scenes can look different if they did not use aspect ratio 16:9
[All] Added support for baked stencil to the sprite node
[All] Removed limit of 32 vertex streams per mesh when tessellation is enabled, addressing a fatal assertion in certain scenes
[All] Upgraded OpenColorIO to version 2.3.4
[All] Fixed a bug that caused incorrect rendering of volumes when Volume Scatter height is above 0
[All] Fixed bug that would cause a crash during IPR, on deleting a material that uses tone-mapping
[All] Fixed bug that could cause garbage lighting after disabling a light during IPR rendering
[All] Fixed a bug that resulted in an invalid material when Store Color to AOV is connected to the Surface port and the Contour shader is used
[All] Fixed a GPU crash that could occur after disabling Cryptomatte
[All] Fixed rare crash bug that could occur when compiling OSL shaders with a small number of inputs
[Alembic Procedural] Fixed bug that could affect the procedural xforms or materials updates

Release Notes (2025)

2026.3 (2026.02)

2026.2.1 (2025.12)

2026.2.0 (2025.12)

2026.1.1 (2025.10)

2026.1.0 (2025.10)

2026.0.0 (2025.09)

2025.6.0 (2025.07)

2025.5.0 (2025.06)

2025.4.2 (2025.04)

2025.4.1 (2025.04)

2025.4.0 (2025.04)

2025.3.0 (2025.02)

2025.2.2 (2025.01)

2025.2.1 (2024.12)

2025.2.0 (2024.12)

2025.1.1 (2024.10)

2025.1.0 (2024.10)

2025.0.2 (2024.09)

2025.0.1 (2024.09)

2025.0.0 (2024.09)