Twinmotion 2025.1 Preview Release Notes

Twinmotion 2025.1 Preview is now available.

You can download and install the latest release from the Epic Games Launcher on your computer.

If you're a new user, you can get started here.

Feel free to start a New Discussion in the Twinmotion Forum to share your thoughts on this release. If you need to report a bug regarding this release please contact Customer Support.

Recommended Configuration to Run Twinmotion 2025.1 Preview

For complete details on the recommended hardware and software specifications for Twinmotion, please refer to Hardware and Software Specifications.

What’s New

Environment Tab Redesign

The Env (Environment) tab in the Ambience panel has been completely redesigned to create a clearer distinction between the two main lighting modes: Dynamic sky and HDRI.

Depending on the lighting mode you select, you can access different sets of settings: the Sun, Sky, and Clouds settings in the Dynamic sky mode, and the HDRI environment and Directional light settings in the HDRI mode.

While some settings are unique to a specific mode, other settings such as the Season, Wind, Fog, Horizon, and Ocean settings, are shared between both modes.

Additionally, the weather sliders (under Season) have been split into separate sliders for greater flexibility. It is now possible to have rain without clouds or to have snow while keeping colorful autumn leaves on the trees.

Limitation

In specific cases, backward compatibility may not be supported and environment configurations from previous scenes may appear slightly different when opened in this version.

Presets

You can now use and create presets in Twinmotion. Presets are collections of settings that you can easily switch between. Twinmotion already includes premade presets, but you can also create your own.

Currently, presets are available in the Env (Environment) tab, and for Volumetric clouds and Confetti assets.

Limitation

Presets are stored locally, and for now, it is not possible to share them easily among users. When opening a scene that uses presets on another computer, the preset names will default to "Custom," even if the same settings are retained.

Volumetric Clouds

Twinmotion now features Volumetric clouds, enabling you to incorporate realistic cloud formations into your outdoor projects. These clouds can be animated and cast realistic shadows across the scene.

You can adjust key settings, such as altitude and coverage, along with more in-depth options for appearance (such as density, color, and puffiness) and distribution.

Limitations

• Due to hardware limitations, the quality of volumetric clouds is downgraded in Path tracer rendering mode when using AMD graphics cards.

• For performance reasons, when volumetric clouds interact with geometry, no fading occurs in the viewport, and artifacts may appear. This limitation does not affect exports.

• In Real time rendering mode, especially at sunrise and sunset, some imprecision in the cast shadows may be observed, resulting in visual differences between the Viewport and exports.

Exponential Height Fog Improvement

The Fog feature has been improved with the addition of new Height and Color sliders. The Density slider has also been reworked to provide the option of increasing the amount of fog in your scene.

Additional Options for Sky and Sun

Two new Sky atmosphere settings have been added: Turbidity and Atmosphere density.

With Turbidity you can change the clarity of the sky to simulate occluded lighting due to a significant amount of large particles floating in the atmosphere, such as pollution, dust, or aerosols.

The Atmosphere density setting affects the color of the sky by simulating everything from a non-existent to a thin or very thick atmosphere, impacting how different wavelengths scatter.

Additionally, you can now change the Color or Temperature of the Sun, or the Directional light when in HDRI mode.

Configurations

We have added a new Configuration media type that enables you to click on buttons within the viewport to trigger actions such as changing materials or opening doors. This new media type enables you to save various properties—object properties, materials, visibility, and ambience—within different states. The states that are created and that store these properties can be called by placing triggers either in 2D space on the side of the screen or in 3D space in the project.

For more information, see Configurations.

Limitations

Configurations are not supported on Twinmotion Cloud.

Projector Light

A new Projector light type has been added to the Library, enabling you to project videos or images onto the environment. It includes various settings to correct projection distortion and mask parts of the videos or images.

Confetti Particles

A new type of particle system named Confetti has been added to the Library in the Objects > Particles category. This particle system is the first one in Twinmotion that offers a series of presets that can also be customized in the Properties panel.

Limitations / Known Issues

• Confetti Roll shapes cannot currently be rendered in Path tracer rendering mode.

• Confetti affected by Motion Blur can flicker depending on the distance from the camera at the end of the rendering computation in Path tracer rendering mode.

• Roll shapes do not appear in the viewport in Drop mode.

VR Enhancements

• Added support for configuration triggers in VR using the primary button on VR controllers.

• Configured teleportation to use secondary buttons.

• Improved performance by re-enabling Instanced Stereo.

• Improved rendering on NVidia cards thanks to the DLSS plugin for antialiasing (DLAA).

• Lumen can now be used in VR, but you must explicitly allow it in the VR Quality settings due to the very high hardware requirements. Also, please note that using Lumen in VR can introduce rendering artifacts in certain scenes.

Automatic LOD Generation

Twinmotion increasingly offers more advanced systems that use imported meshes. To maintain a high level of performance when working in scenes, we now introduce automatic Level of Detail (LOD) generation.

With the LOD system you can reduce the polycount on imported meshes based on camera distance, which is a common optimization system in the management of real time 3D scenes.

By selecting geometry in a scene, you can view and specify the viewport LOD in the Properties panel.

Three presets (Simple / 3 LOD, Normal / 6 LOD and Complex / 8 LOD) provide different representations of the imported geometry based on the distance between the viewport camera and the visible elements.

You can check the visual consistency of LODs in the 3D viewport with the Display LOD parameter. This parameter does not affect the final rendering.

Virtual Shadow Maps

Virtual Shadow Maps is a new method that improves and quickens the rendering of shadows in Real time rendering mode. More accurate than Standard shadows, it ensures consistency for shadow rendering between the Real time and Path tracer rendering modes.

Virtual Shadow Maps are available by selecting Accurate in the Ambience panel in the Render > Shadows section.

The Sun bias and Lights bias parameters enable you to have accurate Virtual Shadow Maps for the Sun or for artificial lights.

Limitations

• Virtual Shadow Maps are currently not available for MacOS.

• Using the Virtual Shadow Maps feature lowers the framerate when snow and rain weather particle systems are used. This performance limitation will be improved in a later release.

Autodesk Alias .wire File Import

You can now import geometry in the Alias .wire file format. In the Import dialog box, you can set tessellation parameters for extra precision; Coarse, Low, Medium, and High presets are provided.

Import Dock Improvements

Improvements to the Import dock enable you to:

• Select multiple imported files by holding down the Shift key while clicking.

• Delete multi-selected files using the Delete command in the Media menu.

• Press the Delete key on your keyboard to make deletions.

Support for Area and Spacing Tools when Exporting to Datasmith

When exporting a Twinmotion scene to Datasmith, the Area and Spacing tools are now supported. These elements will be correctly imported into Unreal Engine. For further information on the Twinmotion to Unreal Engine workflow, you can reference this documentation.

Legacy Direct Link Functionality Removed

The older legacy add-on plugins are no longer supported and have been removed. To use Direct Link functionality, use the latest Datasmith exporter version found on our plugins page.

Media Multi-selection

You can now multi-select media to change their settings all at once. Multi-selection can be done using the standard shortcuts:

• To select nonadjacent items, hold down the Ctrl key (Command key on MacOS) and select the items.

• To select multiple adjacent items, hold down the Shift key and click the first and last item you want to select.

This functionality works with images, videos, sequences, and panoramas.

Smooth Camera Motion

You can now intuitively ease controls for speed adjustment and spatial manipulation to achieve smooth and controlled camera motion; this is done by selecting points on a camera path and adjusting their tangents.

The camera path is visible in the viewport in Media preview mode. The density of small dots along the camera path provides an overview of the speed changes.

Easing can be controlled at the part level for the beginning and end of the part. The default is set to easing in / easing out.

Camera Target

Action Cam now has an option to enable a target. This ensures precise framing by easily controlling the camera direction with a target or look-at constraint. If activated, the target can also manage the depth of field Distance value of the camera.

Orbit Camera

A new Orbit Cam rig revolves the camera around its specified central pivot within the scene.

Tire Base Material

We have added a specific material that textures and automatically creates UVs for flat cylindrical objects, such as tires. Four tire materials have also been added to the Library in the Materials category.

Car Paint Improvements

You can now create more realistic car paint effects, thanks to the following additional controls on the Car paint material:

• Pearlescent Scale

• Clear coat Roughness

• Imperfections (Dust, Fingerprints, and Scratches)

Coated Carbon Fiber Materials

Four (4) new Coated Carbon Fiber materials were added to the Twinmotion Library in the Materials > Metal category. They are essentially designed to be used for the automotive industry but can also be used for other purposes.

Shadows in Orthographic Views in Real Time Rendering Mode

Shadows are now supported in orthographic views in the Real time rendering mode (Standard and Lumen Global Illumination), providing a major productivity and design aid for architects. Previously, shadows were only supported in orthographic views in Path tracer rendering mode.

Measure Tool

The visual appearance of the Measure tool has been updated.

We have also added a second Measure tool that enables you to quickly measure a distance between two points. This tool also has the option to quickly align the measure on a world axis by Shift-clicking while placing the second point of the measure.

Limitation

Neither Measure tool is visible in Path tracer or in Media preview mode.

Modeling Tools

We have added a Modeling panel, accessible by clicking Modeling in the Footer, which consists of two primary categories: Faces and Objects. To start using any of the modeling tools, one or several meshes need to be selected. Only Sketchfab, Quixel, and imported meshes are supported for the modeling tools.

Faces Tool

The Faces category gives you access to several ways to flip normals by going into the Edit normals option. When entering this mode you will see two different colors on the faces of selected meshes: blue represents the front of faces and red represents the back of faces.

The Auto fix mode tries to automatically flip the normals and its vertices in the correct orientation. The results will vary based on the composition and or complexity of the elements.

When you activate either the Connected group or Single mode, you can select faces in the viewport to flip them instantly in one click.

In the Edit faces option you can select faces based on four modes: Single face, By material ID, Connected group, and All. When you select one or more faces, you can use the Delete button under Actions to remove the selected faces.

Mirror Tool

Under the Objects category you have access to the Mirror tool, where you can easily choose a mirror direction and position for the mirror plane.

When doing a mirror there are three Merge modes to consider as you may need to create New objects or Merge objects to the existing mesh available in the Scene graph.

The Auto mode automatically detects meshes that are in direct contact with the mirror plane and merges them with the original mesh, and creates new meshes in the Scene graph with the ones that are not in direct contact with the mirror plane.

Bugs Fixed in 2025.1 Preview

Animation

TM-15468 - Fixed an issue where Gltf overrides were sometimes not properly updated after reimport.

TM-15751 - Fixed a crash when trying to import an animated FBX file.

TM-15567 - Fixed an issue where editing splines was breaking the action cam sequence.

TM-15926 - Fixed a problem where displayed animation's frame changed when scrubbing outside its looping timeframe.

TM-15883 - Fixed an issue in sequences where modifying the length of a part was not saved when releasing the edge of the part.

TM-15874 - Fixed an issue in sequences where the position of the timeline was inconsistent when extending a camera part by dragging.

Content and Library

TM-13391 - Fixed an issue where smoke particles looked blocky when path tracing was enabled and the camera was aligned on the Y axis.

TM-15878 - Fixed an issue where Megascans 3D Plants were not affected by snow.

TM-16143 - Fixed an issue where the texture on the Animated human Brian Worker changed depending on camera distance.

TM-16429 - Fixed an issue with autumn leaves where the variation in color made the growth animation flicker.

Core

TM-16364 - Fixed a performance issue that occurred when closing scenes that contained a large amount of materials.

Import and Interoperability

TM-16593 - Fixed a crash that occurred when reimporting a file with Fabric or Substance materials after importing it using the material substitution workflow.

TM-14962 - Fixed an issue with transform inconsistencies between substituted sketchfab objects that were or were not already instantiated.

TM-15089 - Fixed an issue with Datasmith imports where material overrides were not updated after reimport.

TM-14272 - Fixed an issue where a material was not replaced by the default material after a .udatasmith file reimport.

TM-15302 - Fixed an issue where a GLTF file was imported with "Placeholder material".

TM-16215 - Corrected the font size for .udatasmith import items in the Import dock.

TM-16517 - Fixed an issue in exported media where Paths were broken with imported meshes.

TM-13557 - Fixed an issue with an Archicad Direct Link import where an object replacement was reset after reimporting.

TM-17618 - Fixed an issue where Animator tools were unlinking from objects when resyncing a Datasmith Direct Link.

TM-16775 - Fixed an issue where the import of GLTF files was supported differently between static and animated import pipelines.

Render and Export

TM-13479 - Fixed an issue where changing the Quality settings of Lumen reflections was breaking the thumbnail in the Lakehouse scene.

TM-14860 - Fixed an issue with unusual image distortion in aPanorama set.

TM-15149 - Fixed an issue with random rendering artifacts in Lumen rendering mode.

TM-14574 - Fixed an issue where a green and white bloom was appearing in the viewport after creating a new scene on Mac Intel workstations.

TM-15626 - Fixed an issue with no camera Motion Blur in Path tracer rendering mode.

TM-15624 - Fixed an issue where Motion blur was incorrect in Path tracer rendering mode.

TM-15927 - Fixed an issue with overexposed bloom in Standard Real time render on MacOS.

TM-16074 - Fixed an out of video memory error when exporting 16K panoramas.

TM-16057 - Fixed an issue where video textures were not appearing on LED Walls in exported renders.

Tools

TM-15153 - Fixed an issue where the Copy dialog box was not appearing when trying to copy and paste paths using Ctrl + C and Ctrl + V.

TM-15590 - Fixed a crash that sometimes occurred when enabling the Gravity tool on part of a Sketchfab object.

TM-14923 - Fixed a visual glitch on vehicle paths after hiding and unhiding the paths.

TM-15588 - Fixed an issue where resnapping nodes did not reset the spline curvature to the snapped surface.

TM-15735 - Fixed an issue where the Scale tool was enabled on lights.

TM-16543 - Fixed an issue with the Measure tool where the Constraint parameter did not get instanced and was enabled by default.

TM-16544 - Fixed an issue with the Measure tool where the Length parameter was not instanced with constraint off.

TM-16545 - Fixed an issue where User library measure tool instances all snapped to the same point in the scene.

TM-15959 - Fixed an issue with the Area tool where assets were disappearing when changing their sizes in an Area.

TM-16125 - Fixed an issue with Custom paths where selected instances were not affected by the up axis.

TM-16037 - Fixed an issue with Custom paths where the cube spawned before the custom paths were completed.

TM-15574 - Fixed an issue with exported videos where odd numbers in width or height were unsupported.

TM-16955 - Fixed an issue where refreshing a media thumbnail was changing the Sun size value when Match sun to HDRI was enabled.

UI

TM-17411 - Fixed an issue in the Preferences panel in the Custom paths sections where "TXT_CustomPathsArtifactCloudLibraryFolder" was displayed instead of "Twinmotion content library".

Known Bugs and Limitations Affecting 2025.1 Preview

Animation

TM-15999 - User interface artifacts appear when using the Resource Collector in sequences on MacOS.

TM-16015 - Inconsistent behavior in sequences when multiple keyframes are selected and the Shift key is pressed.

TM-16104 - Sequence properties are hidden when a sequence is played or stopped.

TM-16160 - Multiple overlapping keyframes are created when adding keyframes with a 3DConnexion SpaceMouse.

TM-16419 - Sometimes keyframe thumbnails appear empty.

TM-16660 - When attempting to rename a configuration, the new name is not saved when the focus is lost.

TM-16706 - In the thumbnails of configurations that contain snow, the Ambience snow effect is excessive compared to the viewport.

TM-16103 - When you hover over the Path Tension setting in sequences, the highlight is not intuitive.

TM-17500 - Imported animated FBX is green and purple instead of red and blue.

TM-17502 - Glb animated objects are smaller upon import compared to previous releases.

TM-17715 - File merges do not retrieve all configurations.

TM-17727 - The tangent handles of keyframes are visible in the Viewport when creating media if a sequence is in Media preview mode.

TM-17782 - Configuration triggers may be displayed over other Twinmotion popups.

TM-17779 - When media is created from another media that has an applied state, the state is sometimes not applied to the newly created media.

TM-17783 - In visibility configurations, the visibility of objects in the thumbnail of a state and of exported media sometimes differs.

Content and Library

TM-17706 - Trees lose their leaves when switching the Age on a Paint layer.

Core

TM-16102 - The Twinmotion window becomes solid black and unresponsive after being maximized.

TM-16120 - The character length of the cache path is over 119 characters which leads to a crash.

TM-17393 - Temporary file is left on disk after video export on MacOS.

TM-17536 - Crash after choosing not to save the project when HDRI is enabled.

TM-17695 - Certain tooltips are no longer displayed.

Import and Interoperability

TM-16134 - Materials are reset on SKP models after reimport.

TM-16484 - User interface glitch in the Direct Link import window.

TM-16756 - Mesh import instances are lost on reimport.

TM-17486 - Importing a 3D model as a landscape scales it down to 1%.

TM-17487 - Landscape mesh import custom up axis is not working.

TM-17477 - Cannot export a Datasmith scene to the Unreal Engine project root folder on MacOS.

TM-17644 - Modified materials reset after Datasmith reimports if the mesh has been changed in the DCC.

TM-17712 - Twinmotion becomes unresponsive when importing Alias .wire files that contain non-latin characters or accents.

TM-17744 - Crash when exporting medium to large projects to Datasmith.

TM-17745 - Base materials in exported Datasmith files imported into Unreal Engine are missing material function.

Presenter and Cloud Presenter

TM-17509 - Clicking on the Play button in Presentations after pausing resets the timer per media.

TM-17725 - Video projection is not displayed on media thumbnails.

TM-17738 - Hidden objects are initially visible in Presentations if the export was done with the Push to Cloud button.

Rendering and Export

TM-16504 - Glass materials do not cast shadows.

TM-17426 - Performance issue with exporting video from scenes containing Projector lights.

TM-17519 - Line artifact in the sky with HDRI and Path tracer enabled.

TM-17300 - Line artifact in exported media in Path tracer when Auto-exposure and Denoiser are both enabled.

Workaround: Disable Auto-exposure or the Denoiser.

TM-17662 - Visual backward compatibility issue on scenes containing Fog rendered with Path tracer.

TM-17622 - Lumen Global Illumination is missing in Lumen videos exported with render layers.

TM-17795 - Sun Disk Bloom, Lens Flare, and Dirt do not work on export when Auto-Exposure is enabled in Path Tracer mode.

TM-17814 - Render layers are broken on MacOS.

Tools

TM-16123 - Inconsistent icons between created materials and material preview.

TM-16417 - The thumbnails of Vehicle paths stored in the User library are rendered incorrectly.

TM-16522 - Changing the color of the Measure tool does not change it completely.

TM-16805 - The limit of simultaneous projections is 14, regardless of the resolution.

TM-16854 - The video source in the projection disappears from the Viewport after exporting a local Presentation.

TM-17357 - Collapsed video parts that are copied and pasted are expanded.

TM-17648 - Glowing part of the LED wall is visible when reopening the file even if the visibility is hidden in the Scene graph.

TM-17816 - Urban - OpenStreetMap is not loading.

UI

TM-17515 - Splash screen is oversized if Twinmotion is launched from the taskbar.

TM-17659 - The warning text for non-supported objects in the Modeling tool is cut off.

TM-17707 - The Time of day slider in the View menu of the Viewport is not disabled in HDRI environments.

TM-17879 - The thumbnails in the Color gradient list (Ambience panel > FX) are displayed as black.