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Greenmote

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Greenmote

Turn placed grass into OpenMW groundcover, and fix groundcover that floats, sinks, sits on roads or water, or clips into rocks.

Download 0.4.0 Windows 4.88 MB macOS, Apple silicon 5.06 MB macOS, Intel 5.43 MB Linux 6.71 MB Android 2.28 MB PortMaster 2.27 MB
Install guideDocumentation Source Report a problem
Stable
0.4.0 2026-09-30
Development
0.4.1-dev.0
Package
Program 6 platforms
License
MIT OR Apache-2.0

Overview

Morrowind places its grass, ferns, kelp and lilypads one static at a time, like any rock. OpenMW has a better home for them: plugins loaded with groundcover= are drawn as groundcover, in bulk, without collision, and thinned by the player’s density setting. Greenmote moves grass into that home and keeps it standing on the ground your load order actually has.

Two jobs, one load order

Convert and unclip both read the load order OpenMW reads, and both write plugins OpenMW loads as groundcover.

  1. source

    Your openmw.cfg

    The data folders, content files and groundcover= plugins OpenMW loads, found where OpenMW finds them.

  2. tool

    Greenmote

    Reads that load order the way OpenMW does: its statics, its terrain, its textures and its water.

  3. result

    OpenMW

    Grass drawn as groundcover, standing on the ground this load order has.

service

convert

Grass statics placed by your content files become groundcover.omwaddon; deleted_groundcover.omwaddon hides the originals.

service

unclip

A groundcover plugin is measured reference by reference; what floats, sinks, sits on a road or water, or clips into a rock is fixed or deleted.

How the pieces relate
  • Your openmw.cfg Greenmote
  • Greenmote groundcover= OpenMW
  • convert writes new plugins Greenmote
  • unclip rewrites a plugin Greenmote

Convert reads your load order, finds the grass statics every content file places in exterior cells, and writes two plugins: groundcover.omwaddon, which places that grass again as groundcover, and deleted_groundcover.omwaddon, which hides the originals. The meshes are copied beside them.

Unclip takes a groundcover plugin, such as a grass mod generated for somebody else’s landscape, and measures every reference in it against your terrain, water, roads and statics. Grass that floats is lowered, grass buried too deep is raised, tilts follow the slope, and grass on a road, under new water or inside a rock is moved or deleted. It reports first and writes only when asked, keeping the original beside the plugin.

greenmote convert --dry-run
greenmote unclip --plugin Rem_AI.esp
greenmote unclip --plugin Rem_AI.esp --write

Run greenmote with no arguments and both are in a window, with a Settings tab for greenmote.toml. The GUI speaks English, French, German, Russian, Spanish and Swedish.

Documentation#

  • Start here: a first conversion and a first unclip, in the GUI or on the command line.
  • Convert: what is matched, what is written, and how to enable it.
  • Unclip: what is measured, each action, and reading the report.
  • greenmote.toml and Command line: every setting and option.

Install

Program · 0.4.0

Download and runa program: one archive per platform, no installer
Windows 4.88 MB macOS, Apple silicon 5.06 MB macOS, Intel 5.43 MB Linux 6.71 MB Android 2.28 MB PortMaster 2.27 MB
  1. Download the archive for your platform: Windows, macOS, Apple silicon, macOS, Intel, Linux, Android, PortMaster.
  2. Unzip it wherever you keep your tools. Nothing goes into the game's folders.
  3. Run greenmote, or greenmote.exe on Windows. From a terminal, greenmote --help lists what it can do.

Then the documentation takes it from there.

DreamWeave clientsCHIMERA and other tools that read the manifest

Give the tool this page's address, or the manifest directly. It finds the release for its channel, checks compatibility and dependencies, downloads from any listed source and refuses bytes whose SHA-256 does not match.

Project id
57ec3325-acb3-4307-9c0f-2031ab3354ef
Manifest
https://dreamweave-mp.github.io/greenmote/dreamweave/projects/57ec3325-acb3-4307-9c0f-2031ab3354ef.json

What is in the archive

  • greenmote-<platform>.zipone per platform
    • greenmotethe program; greenmote.exe on Windows

After installing

Convert writes groundcover.omwaddon, deleted_groundcover.omwaddon and Meshes/grass/ into your data-local folder. Enable them in openmw.cfg, or pass --auto-enable:

groundcover=groundcover.omwaddon
content=deleted_groundcover.omwaddon

Uninstalling

Remove the groundcover=groundcover.omwaddon and content=deleted_groundcover.omwaddon lines from openmw.cfg, then delete the two plugins and Meshes/grass/ from the output folder. Unclip keeps the plugin it first rewrote as <plugin>.greenmote-original; copy it back over the plugin to undo every unclip run.

Notes

Unzip the archive anywhere and run greenmote. With no arguments the Windows, macOS and Linux builds open the GUI; greenmote convert and greenmote unclip run from the command line. The Android and PortMaster builds are the command line only.

Greenmote finds your openmw.cfg the way OpenMW does. Start here walks through a first conversion and a first unclip.

Releases

Full changelog →

  1. 0.4.0 stable 2026-09-30

    Unclip leaves references alone across terrain seams and caps how far it tilts them, convert keeps the newest plugin’s references, and the GUI closes the console Windows opens for it.

    Breaking changes

    • Greenmote is licensed MIT OR Apache-2.0, at your option, instead of GPL-3.0-only. 0.2.0 and 0.3.0 stay GPL-3.0-only.

    Added

    • The GUI window has Greenmote’s crescent-moon icon.
    • --max-tilt (and max_tilt in greenmote.toml) caps how far orient tilts a reference, 45 degrees by default; a value outside 0 to 90 is a usage error.
    • The unclip report states max_tilt beside the other tolerances.

    Changed

    • Unclip keeps a reference unchanged where the terrain under its mesh is a seam between landmasses, judged on the tilted base and on the grounded origin.
    • Convert skips Verdant Bitter Coast fern trees by default.
    • Unclip refuses Greenmote’s own convert output as a target.

    Fixed

    • Convert writes one CELL record per grid, so the newest plugin’s references win in game instead of the oldest.
    • Context plugins load with their headers, so inherited references resolve to their owning plugin instead of being dropped.
    • --output-plugin writes the plugin even when unclip changes nothing.
    • An [unclip] table that only sets max_tilt or max_sink_fraction is kept.
    • Unclip no longer stops on a static whose mesh cannot be loaded, and water-delete is a water-plane crossing test again.
    • A failed command prints its error as a message, and --help describes water-delete and static-delete as they behave.
    • The Unclip tab’s Open log button opens greenmote-unclip.log.
    • Starting the GUI from Explorer or a shortcut closes the console window Windows opens for it.
    greenmote-Windows-X64.zip 4.88 MB · Windows
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    Release
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    SHA-256
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    greenmote-macOS-ARM64.zip 5.06 MB · macOS, Apple silicon
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    5301679 bytes
    SHA-256
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    greenmote-macOS-X64.zip 5.43 MB · macOS, Intel
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    Release
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    Size
    5692281 bytes
    SHA-256
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    greenmote-Linux-X64.zip 6.71 MB · Linux
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    Release
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    Size
    7032974 bytes
    SHA-256
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    greenmote-Android-ARM64.zip 2.28 MB · Android
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    Release
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    Size
    2393490 bytes
    SHA-256
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    greenmote-Portmaster-ARM64.zip 2.27 MB · PortMaster
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    Release
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    Size
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    SHA-256
    b527e6b19ce77ac20bdefbddbc66903e5347c3290e8368a2b0931a0fc24ccf8a
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  2. 0.3.0 stable 2026-09-27

    Unclip measures every reference against the real terrain and collision triangles of your load order, and only writes when asked.

    Breaking changes

    • Unclip is a dry run by default again: --write rewrites the plugin in place, keeping <plugin>.greenmote-original and <plugin>.bak, and --output-plugin writes the rewritten plugin elsewhere. --dry-run, --instances, --meshgenerator-ini, --origin-epsilon and the all and none actions are gone; --write-actions is now --actions, and the old name still works.
    • float_tolerance, max_sink, max_sink_fraction and sink replace origin_epsilon.

    Added

    • Every reference is measured directly: its mesh’s base against OpenMW’s triangle-split terrain, the texture OpenMW draws under it, the water plane, and the collision triangles of the statics around it. A reference inside a closed rock is recognised by ray parity.
    • Burial is judged against plant height: the limit is the larger of max_sink units and max_sink_fraction of the mesh.
    • A plugin outside every data folder brings its mod’s meshes folder into the VFS, so a downloaded grass mod can be checked before it is enabled.
    • References placed outside their own cell are deleted: OpenMW draws them only from far away.
    • --verbose writes one line per reference to greenmote-unclip.log; --structured prints the report as JSON; GREENMOTE_PROFILE=1 prints phase timings.
    • The Unclip tab lists every groundcover= plugin in openmw.cfg with a checkbox and fixes the checked ones.

    Changed

    • Every write is reloaded and checked against the plan, and unclip run again on its own output plans nothing.
    • Context plugins and occluder meshes load in parallel, and every reference is decided in parallel.
    • openmw-config 2.0, vfstool_lib 0.10 and rapier3d 0.36.

    Fixed

    • Reference rotations compose as OpenMW composes them; references rotated about more than one axis were measured with the order reversed.
    • A static moved or deleted by a later plugin no longer leaves a copy behind to clip against.
    • Dependencies updated past a compile-time security advisory.

    Migration

    Unclip no longer writes unless you pass --write. Replace --dry-run with nothing, and --write-actions with --actions. In greenmote.toml, remove [unclip] keys the report warns about; the Settings tab drops them when it saves.

    greenmote-Windows-X64.zip 4.81 MB · Windows
    Download 0.3.0
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    Release
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    greenmote-macOS-ARM64.zip 5.00 MB · macOS, Apple silicon
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    Release
    0.3.0 (stable)
    Size
    5241822 bytes
    SHA-256
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    greenmote-macOS-X64.zip 5.37 MB · macOS, Intel
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    Release
    0.3.0 (stable)
    Size
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    SHA-256
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    greenmote-Linux-X64.zip 6.64 MB · Linux
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    Release
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    Size
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    greenmote-Android-ARM64.zip 2.29 MB · Android
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    Release
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    Size
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    SHA-256
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    greenmote-Portmaster-ARM64.zip 2.29 MB · PortMaster
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    0.3.0 (stable)
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  3. 0.2.0 stable 2026-06-03

    Unclip deletes grass on roads and grass that ends up under water, the GUI has tabs and runs several plugins in turn, and Greenmote is GPL-3.0-only.

    Added

    • The water-delete and road-delete unclip actions, with configurable road texture patterns.
    • Scriptless activators are converted like statics.
    • Convert, Unclip and Settings tabs in the GUI; the Unclip tab runs a list of plugins one after another, can be cancelled, and can write each to its own output plugin.

    Changed

    • Unclip writes by default; --dry-run inspects without writing.
    • Tree-like statics no longer count as occluders by default.
    • Unknown greenmote.toml keys are ignored instead of rejected, and run-time choices are no longer saved to it.
    • Greenmote is licensed GPL-3.0-only; 0.1.0 carried no license.

    Fixed

    • Static collision follows RootCollisionNode, including hidden ones.
    • Without a discoverable openmw.cfg, the default user config is used without asking.
    • Unclip is much faster on large plugins.
    greenmote-Windows-X64.zip 4.64 MB · Windows
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    greenmote-macOS-ARM64.zip 4.97 MB · macOS, Apple silicon
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    greenmote-macOS-X64.zip 5.25 MB · macOS, Intel
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    greenmote-Linux-X64.zip 6.55 MB · Linux
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    0.2.0 (stable)
    Size
    6868416 bytes
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    greenmote-Android-ARM64.zip 2.50 MB · Android
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    Release
    0.2.0 (stable)
    Size
    2616570 bytes
    SHA-256
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    greenmote-Portmaster-ARM64.zip 2.47 MB · PortMaster
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    Release
    0.2.0 (stable)
    Size
    2585994 bytes
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Credits

  • MaintainerDreamWeave
  • tes3, the plugin and NIF library Greenmote reads and writes withGreatness7
  • The groundcover, terrain, collision and rotation rules Greenmote measures againstOpenMW