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Forest Release Notes

 Forest Pack Lite/Pro 4.4.1
  • Fixed rendering error with Mental Ray and Max 2016.
 Forest Pack Lite/Pro 4.4.0
  • Added support for Max 2016 and V-Ray 3.2.
  • Areas->Edge/Size modes are properly affected by Geometry->Scale/Global Scale.
  • Animation->time parameters are defined now as number of frames, instead time units. This solves a potential problem with Max 2016.
  • Fixed: Animation->time parameters are converted correctly in PAL mode.
  • Forest Seed parameter and Forest Color map percentages are animatable.
  • Scene Explorers are closed before rendering with Mental Ray and restored once completed. This workaround fixes a rare crash of the Scene Explorer in Max 2015.
  • Fixed: Forest Material->Tint doesn't work with V-Ray 3.x.
  • Fixed memory leak in Mental Ray.
  • Fixed potential crash usign animated objects.
  • Fixed rare crash with Network licenses.
  • Fixed version checking in MR shader.
 Forest Pack Lite/Pro 4.3.7
  • Fixed crash when using Edge mode with Exclude Fallof.
  • Fixed crash with Mental Ray distributed rendering and Forest Color using Tint/Map by Element.
  • Fixed Octane materials for Gravel presets library.
  • When a material is loaded from the library, it's updated both in the Custom Object and Geometry->Material. That fixes updating problems with Octane presets.
  • Increased limit of Animation->Samples from 20 to 999.
  • Removed Mental Ray warnings when using IRay.
 Forest Pack Lite/Pro 4.3.6

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Changes between 4.3.6 and 4.3.5:

  •  Fixed random rendering bug after deleting Forest objects or resetting the scene.

 Changes between 4.3.5 and 4.3.4:

  • Fixed potential crash rendering XRef'd materials in V-Ray.

Changes between 4.3.4 and 4.3.3:

  • fixed crashing bug with nested Forest objects.

New features and changes:

  • ForestLOD (Level of Detail). 
    • A new type of object, "ForestLOD", is used to define levels of detail. Once created, assign it as Custom Object in Forest. 
    • Visibility triggers by distance to camera or screen size.
    • Support for billboards and geometry.
    • Custom materials.
    • LOD properties can be adjusted in Camera rollout. 
  • New Area->Boundary Checking mode: Edge.
    • This mode creates clean edges automatically, regardless of the geometry used.
    • Specially designed for grass distributions, lets you to use clumps of any size, solving problems as this.
    • Currently this feature is supported only in V-Ray and Generate distribution mode (not Custom Edit). For non supported renderers, Point mode will be used instead.
    • Clicking Area->Edge with Left Ctrl enables preview on viewport (Points cloud mode only).
  • Added Areas->Z Offset.
  • Added Areas->Limit by Surface Material ID.
  • Areas->Falloff Affect is separated into Density and Scale values.
  • Added Forest Tools->Data exporter to XML files.
  • Added General->Disable Pop-ups: turns off all suggestions and warning messages, except critical errors (this option is global and persistent).
  • Geometry->Get Size from Library is removed and enabled by default.
  • Geometry->Global Size parameters are removed, although they are accessible by Maxscript ("globs¡ze", "width", "height")
  • Geometry->Use Object Dimensions is replaced by local Scale parameter.
  • New Display->Proxy model: Arrow (non-symmetrical)
  • Added Display->Disable Object.
  • Forest Tools->Instantiate copies User Properties, Object ID and wireframe color from the source object.
  • Display->Use DirectX is changed to global and persistent value
  • Installer supports multiple Max versions.


  • 16 new presets: Gravel, including detail and large scale models.
  • Added materials for Corona Renderer.


  • Fixed: Distribution->Mapping Channel is reset to zero the first time scene is loaded.
  • Fixed crashing bug using Undo after a Surface delete.
  • ixed animation and point-cloud issues from objects with zero size at frame 0.
  • Added Undo support for several operations in Geometry rollout (as Clear buttons).
  • Fixed problem of Exclude areas with Inverted Falloff Curves.
  • Fixed issues with Distribution->Diversity Map and UV Surfaces.
  • Fixed rare problem related to missing Surfaces on load.
  • Fixed minor issues in Maxscript functions.
  • Fixed potential crashing bug on Forest cloning.
  • Forest Color ignores status of Override checkbox when using Tint by Element.
  • Added Undo support to Geometry->Copy/Paste operations.


 Forest Pack Lite/Pro 4.2.5
  • Fixed minor issues with Forest Color and Mental Ray.
  • Fixed random crash with points-cloud mode in Max 2015.
  • Fixed: Library->Import actions work only if there is an item selected.
 Forest Pack Lite/Pro 4.2.4

New features and changes:

  • Library Browser can import and attach multiple items from a Max file, setting * as object name.


  • Fixed picking of sub-objects with Max 2015 and Custom Edit mode.
 Forest Pack Lite/Pro 4.2.3

New features and changes:

  • Added support for Max 2015
  • Improved V-Ray render performance on many-core machines.
  • Improved viewport peformance using animation modes.
  • Forest Lite can be collapsed to editable mesh.


  • Fixed: Forest Tools->Delete was not working
 Forest Pack Lite/Pro 4.2.2

New features and changes:

  • "Meadow", a new library that includes over 30 wild grass and flower presets.
  • Support for V-Ray 3.0 final.
  • Support for Corona Alpha 6, including Forest Color.
  • Translation X/Y range can now be defined using min/max values.
  • Translation can be controlled using maps.
  • Added Transform->Probability map (for translation, rotation and scale). When enabled, the map is used as a probability value for the random range (black: no random, white: full random range)
  • New Animation mode: "Frame from Map", uses a map to define the absolute frame within a Start/End range.
  • Diversity Map can use its own texture, independent of the Distribution Map.
  • New scattering algorithm for UV Surfaces, which allow to deform the surface without changing the density of the distribution. To preserve compatibility with old scenes, existing Forest objects use the old algorithm.
  • Inverted falloff curves can be used at same time with including and excluding areas.
  • In Custom Edit mode, items are placed in the highest surface when there are several of them stacked.
  • "Tree Editor->Add Items" mode is set by default to "Random".
  • "Material Optimizer" can be applied to the material library.
  • Forest Tools uses a more descriptive name for the generated items.
  • 2D Library items are compatible with VRay 3.


  • Fixed random crash cloning Forest objects.
  • Fixed crash in V-Ray when using billboards and camera motion blur.
  • Fixed: Presets are loaded as XRefs, instead merged in the scene.
  • Fixed several issues in the Library Browser.
  • Custom Edit items are properly positioned when rescaling scene units.
  • Fixed look of "Areas->Pick Models" dialog when resized.
  • Fixed rare crash in Forest Color when modified from Maxscript.
  • "VRay not compatible" message is shown only one time and doesn't crash Max.
 Forest Pack Lite/Pro 4.1.6
  • Added support for V-Ray 3.0.
  • Improved Thea Render materials.
 Forest Pack Lite/Pro 4.1.5
  • Fixed error picking objects (areas, custom objects), that would produce unexpected behaviours.
  • Fixed rare error editing paint areas.
 Forest Pack Lite/Pro 4.1.5
  • Fixed error picking objects (areas, custom objects), that would produce unexpected behaviours.
  • Fixed rare error editing paint areas.
 Forest Pack Lite/Pro 4.1.4
  • Added support for VRay 3.05.03 beta.
  • Fixed rendering error in Octane, when there is not a Custom Object assigned in Geometry List.
 Forest Pack Lite/Pro 4.1.3
  • Fixed error on scene save after rendering, when using Mental Ray and nested Forests.
  • Fixed potential crash using exclusion area from a Forest object that uses Custom Edit mode.
  • Fixed right menu on Library Browser when there are not items selected.
  • Fixed potential crash using presets of billboards.
 Forest Pack Lite/Pro 4.1.2
  • Density/Scale falloff and Boundary Checking for Surface areas (without creating an auxiliary spline).
  • Added Surface->Randomize Stacked. Allow to randomize items that are aligned on the same XY position, along stacked surfaces.
  • Added right-menu selector for Custom Objects, Surfaces and Areas.
  • Added Display->Update All. Rebuilds all Forest objects.
  • Added RGB Level for diffuse maps to Material Optimizer.
  • Added support for VRay 3.0 beta.
  • Added support for VRay 1.5 in Max 2013.
  • Added Max 2014 to the installer.
  • Increased limits of Transform->Translation
  • Forest Tools assigns Object ID from the Forest object to the instances.


  • Added Preset materials for Octane and Thea Render.
  • Some library models (daisy and white clover) were to big. They have been scaled to a more natural size.
  • Added support for Laubwerk Plants catalog add-on (to be released soon).
  • Right click on Creation Panel->Library button clears current selection.
  • Presets now can use library materials. Each material of the preset is replaced by a material from the library with same name.
  • XRef import is disabled by default for Preset models. This behaviour can be overriden editing manually the XML definition file (property xref=1).
  • XRef materials always are merged in the scene, regardless of the Library Browser settings.
  • The templates layer now keeps a single copy for each plant model. Scenes created with previous versions (from 4.0), are automatically optimized when saved with Forest 4.1.
  • Fixed: error loading preset if exists in the scene a Forest object with same name as used in preset.
  • Added support for labels and thumbnails at library level.


  • Fixed major viewport slowdown when using animated VRay proxies.
  • Note: By efficiency reasons, now Forest doesn't update automatically if you modify a Custom Object and this is animated. Use Display->Update to reload them.
  • Point-cloud colors are gamma corrected.
  • Point-cloud mode is suggested for Laubwerk objects.
  • Fixed bug with nested Forests when inner object is on Custom Edit mode.
  • Geometry->ID Color are properly updated after cloning.
  • "Add Multiple" selectors (Custom Object/Area/Surface) now accept geometric objects created from splines.
  • Fixed updating issue when two o more areas share a same spline or object.
  • Fixed crashing bug using Tree Editor when object is empty ('F' icon).
  • Fixed items rotation when using Forest in XRef scenes with "Bind" option.
  • All Maxscript functions that have size as parameter, now accept zero to use the default item size (Custom Objects only).
  • Uninstaller doesn't remove installed catalog add-ons.
  • Fixed crash when assigning Custom Objects directly from the templates layer.
  • Fixed crash using Octane material converter.
 Forest Pack Lite/Pro 4.0.3
  • Rotating items on Custom Edit now uses the Max center mode (Pivot Point, Selection or Transform Coordinate Center).
  • When switching from Generate to Custom Edit, it is possible to exclude items hidden by Camera clipping.
  • Library Standard materials are simplified. Now grass presets can be used directly on Maxwell, or easily converted to other engines.
  • Camera->Auto Assign to Active View->Only Before rendering parameter is removed.
  • Added Camera->Auto Assign to Active View->Apply to Look-At.
  • Fixed: Deleting thousands of items in Custom Edit mode was too slow.
  • Fixed: VRay exception in Forest Color when rendering animations.
  • Fixed: Rare error loading grouped items from the Library.
  • Fixed: Crashing bug when changing Geometry->Template.
 Forest Pack Lite/Pro 4.0.2
  • Fixed bug that would, in some cases, create continuous updating loops in Max.
  • The Presets texture path is added to the Max configuration. Now Forest adds atomatically all paths listed in the following registry key:
    HKEY_LOCAL_MACHINE\SOFTWARE\Itoo Software\Forest Pack Pro\TexturePaths
  • 3D Models are properly loaded from the library in "Merge" mode, not as XRef.
  • Added compatibility for Maxwell plugin 2.7.24. Note: This is now the lower version supported.
  • Maxwell render visibility flags are used.
  • ForestLite / ForestPro macros are available in Customize->Customize User Interface (for toolbars and others)
  • Fixed materials of Wild Grass Presets
  • Fixed crash when the distribution map cannot be loaded.
  • Material->Fast Opacity is put back for compatibility with previous scenes (removed in 4.0.1)
 Forest Pack Lite/Pro 4.0.2

  • Render

    • Added native support for more render engines: VRayRTMaxwell RenderArionOctaneand Thea Render.
      • Forest Color and other tint modes are not supported on the new engines.
      • Be sure your render software is upgraded to the latest version.
      • Support for these engines is experimental, please report any problem that you find.

    Library Browser

    • Added 3D models of grass, flowers and stones.
    • Added Ready-to-use Presets. Some of them include two versions: detail (for small areas), and large (using clumps, optimized for large areas).
      • Note: all models of the library include materials for Scanline,Mental Ray and VRay, not for other engines.
    • Added support for models organized in separate meshes or groups. Forest attachs all elements in a single mesh when importing.
    • Commonly used options have been moved to the main window: Material handling, Merge/XRef, etc.
    • Added render engine selector for libraries that support multiple materials.
    • Classic 2D Library is not installed by default. It is available from the installer as "Legacy Library".

    Geometry List

    • Support for groups in Custom Objects.
      • This mode is useful to scatter groups of plants, preserving their composition. For example, sets of flowers or grass.
      • It works nicely used together Distribution->Diversity->Clusters.
      • Elements of a group are handled as individual items once scattered, both for the boundary checking and surface placement. This also has a great impact on the number of items generated, be care when scattering groups with many objects.
      • Don't use groups for objects that must be handled an unique object (for example a tree). In this case, use a single mesh as before.
      • Groups must be assigned using the name selector. Max doesn't support "pick" groups from the scene.
    • Added compatibility with Laubwerk Plants.
    • Added multi-select support. Now it is possible to edit or delete multiple items at once.
    • Added lock aspect ratio button to Geometry->Width/Height.
    • Geometry->Material is not longer a required parameter. If not defined, the material of the Custom Object is used.
    • Forest automaterials are generated using random names, to avoid duplicates.
    • Optimize Material works on the custom object material if Geometry List->Material is not defined.


    • Points-cloud now uses a simulated shading mode, to improve 3D look. Use the slider to define the shading factor.
    • Added global and local density parameters for Points-cloud.
    • Nested Forest objects (as clumps of grass) don't require to set anymore Render->Meshes mode (VRay and Mental Ray only)


    • Custom Look-at targets, independent from the Camera.


    • Added Density/Scale falloff curves by Slope.

    Tree Editor

    • Added three creation modes: selection, random and sequence. These modes also works with the Creation Tools.
    • Added separate model selector for "Add Items".
    • Added Properties->SubItem. Defines the subitem index when the item belongs to a Group.
    • Transform->Store Values and Re-Seed are moved to Tree Editor->Properties. Re-Seed now works only over the selected items.

    Other fixes and changes

    • Class name is renamed from "Forest_Pro_3" to "Forest_Pro". Be care to modify your Forest scripts, if you have them.
    • Material->Fast Opacity was obsolete and has been removed.
    • Transform Rotation X/Y default value is set to -5/+5.
    • Increased default values for Distribution Map->Max.Density and Display->Render->Max.Items (20 Mill. and 1 Mill. respectively).
    • Fixed: VRay proxies using non-ascii characters fail to load in Max 2013.
    • Fixed: Areas->Select Models works with Diversity->Match Color ID and Clusters.
    • Fixed: Updating issue when a Custom Object is converted to Editable Mesh.
    • Fixed: In some cases, render engine is not correctly identified when using F9 to render.
    • Fixed: Animation samples are not properly updated, when using random or maps.
    • Fixed minor issues of Optimize Material when using multi-subs.
    • Fixed: Forest auto-material would create empty materials in the multi-sub.
    • Fixed undo text in some procedures with areas.
    • Texture maps are not longer used to get color for Points-cloud, only material Diffuse color.
    • Fixed: Geometry List->Color ID is gamma corrected.
    • Fixed: Distribution Map was not visible to Asset Tracker in Max 2009 and older.




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