v0.5.1

[0.5.1] - 2026-09-02

Fixed

• PMX import failed with UMTResources is missing m_PMXRenameListsJson when the package was installed as an immutable UPM package (e.g. via git URL into Library/PackageCache). Seven resource .meta files (PMXRenameLists.json, PMXHumanoidAvatarMappings.json, PMXVRMSpringBoneGroups.json, and the four Kawazu dictionary .bytes files) declared DefaultImporter, so Unity imported them as DefaultAsset instead of TextAsset and every TextAsset reference on UMTResources.asset resolved to null. The metas now declare TextScriptImporter; GUIDs are unchanged, so existing references keep working. (#1)

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v0.5.0

[0.5.0] - 2026-07-10

Added

• MMDBulletPhysics.SetConfig(in NativeConfig) and the corresponding native MMDBulletPhysicsSetConfig entry point. NativeConfig exposes tunable context parameters (ground plane, MMD unit scale, convex collision margin, Spring6DOF translation/rotation spring damping, locked-translation reinforcement); native defaults reproduce the previous hardcoded behavior, and MMDPhysicsManager now applies the configuration to every context it creates.

Fixed

• Kinematic (bone-driven) rigid bodies now move along an interpolated path from their previous-frame targets across fixed substeps, pushed without clearing velocity so Bullet derives proper kinematic velocities, replacing the once-per-frame teleport with zeroed velocity. Variable frame times are carried in a time accumulator so they map onto whole substeps without drifting. This gives the constraint solver continuously-moving anchors it can track at MMD's 4 solver iterations, so translation-locked spring-less chains (long hair) no longer blow apart during fast motion.
• Spring6DOF rotation springs now reproduce MMD's unit-scale reference at Unity's meter scale via spring damping compensation (solverIterations / (referenceIterations * scale^2)). Bullet's motor-based spring target velocity carries no inertia and is not invariant under uniform length scaling, so the meter-scale rotation springs were previously much softer than in MMD.
• Joints whose translation limits are fully locked get redundant point-to-point constraint copies (2 by default) that re-solve those equality rows once more per solver iteration, so locked chains converge at MMD's 4 iterations without changing the converged pose.

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v0.4.0

[0.4.0] - 2026-07-05

Changed

• MMD transform solver optimization pass, behaviour-preserving (physics bakes verified bit-exact against reference clips). BoneSolverData is split into a read-only BoneSolverConfig and a mutable BoneSolverState (hot/cold), and the Burst solver reads/writes elements by reference instead of copying full structs. Redundant work removed from the hot path: float4x4.TRS with unit scale replaced by the rotation/translation constructor, constraint-target loads hoisted into the constrained branch, and dead IK locals deleted.
• Bone transform sampling and flushing, and rigid-body transform flushing, now run as Burst IJobParallelForTransform jobs over cached TransformAccessArrays, replacing per-bone managed Transform calls. The per-frame managed mirror copy (MMDBoneTransform.runtimeData) is gone; external pose resets are signalled through a solverResetPending flag instead.
• Physics stepping memoizes bone world matrices within a step and iterates precomputed simulated/kinetic rigid-body index lists instead of re-filtering and re-sorting them every step.
• Play-mode GPU SDEF skinning is now zero-GC per frame. The skinner swaps in the same pass-through mesh the CPU path uses and writes skinned vertices into its vertex buffer through a compute command buffer encoded once at initialization, instead of re-acquiring the renderer's ping-ponged output buffer (and re-encoding) every frame; Unity's own skinning consumes the pass-through mesh, keeping motion vectors correct. Edit mode keeps the previous write-to-renderer-output behaviour. Bone skinning matrices and quaternions are computed by a single parallel Burst transform job shared by the GPU and CPU paths.
• The VMD Clip Converter window now saves generated .anim files with text serialization.

Added

• MMDSDEFSkinner.NotifyRigChanged() — call before re-rigging a skinner's renderer (changing bones/rootBone) so cached bone accessors and GPU resources are rebuilt on the next dispatch.

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v0.3.1

[0.3.1] - 2026-07-03

Added

• CPU SDEF skinning. MMDSDEFSkinner now supports a Burst-job skinning path (MMDSDEFSkinJob) in addition to the existing GPU compute path, selected per MMDTransformManager via the new sdefSkinningMode (SDEFSkinningMode.GPU/CPU). CPU mode computes skinned vertices on the CPU and uploads them into an all-root-bone-weighted runtime pass-through mesh, so SDEF works on platforms without compute-shader support. A null compute shader forces CPU mode regardless of the serialized setting, and toggling SDEF or the mode at runtime takes effect immediately (restoring the renderer's original mesh when disabled). Both modes share one set of native buffers.

Fixed

• Fixed flickering poses by clearing IK rotation for bones before establishing the pose from FK.

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v0.3.0

[0.3.0] - 2026-07-02

Added

• SDEF skinning. SDEF vertices are now deformed on the GPU via the new MMDSDEFSkinner component and its compute shader instead of being approximated as BDEF2. Each affected SkinnedMeshRenderer runs a per-frame compute pass that applies vertex-morph blend shapes and bone skinning (linear blend for BDEF vertices, the SDEF formula for SDEF vertices) into the renderer's output vertex buffer, driven by the owning MMDTransformManager after the bone solve.

Changed

• Async load/bake APIs now return System.Threading.Tasks.Task<T> instead of Unity Awaitable<T> for Unity 2022.x compatibility. Affects PMXReader.ReadAsync, PMXImporter.BuildUnityObjectsAsync, VMDReader.ReadAsync, VMDAnimationClipConverter.ConvertAsync/ConvertCameraAsync, and PMXAnimationPathBuilder.BuildAsync.
• Lowered the com.unity.ugui dependency from 2.0.0 to 1.0.0 to broaden Unity 2022.x compatibility.

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v0.2.1

[0.2.1] - 2026-06-30

Changed

• Minor package updates to meet Unity Asset Store publishing requirements.

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v0.2.0

[0.2.0] - 2026-06-29

Added

• WebAssembly support.
• Face and eye material heuristics for lilToon shadow tuning.

Changed

• Material transparency detection now runs on the CPU with a Burst job sampling decoded source-file pixels, replacing the GPU compute-shader path.
• Create asynchronous version of most hot path functions for loading models and baking animtions runtime.
• lilToon materials now also set _ShadowReceive, _ShadowBorder, and _lilShadowCasterBias. Faces
  use a 0.3 shadow border, eyes 0.1, everything else 0.5; faces and eyes also get a 0.05 shadow caster
  bias.

Removed

• Unused P/Invoke entry points MMDBulletPhysicsSetRigidBodyTransform and
  MMDBulletPhysicsGetRigidBodyMotionTransform. The batched MMDBulletPhysicsGetRigidBodyMotionTransforms
  replaces them.

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v0.1.1

[0.1.1] - 2026-06-28

Added

• Per-slot external material overrides. PMXImportOptions.materialOverrides supplies a Material per
  generated slot instead of a generated one, surfaced in the importer inspector via a new Materials
  tab (Standard/Override creation modes, per-slot remap list, and an "Extract Materials..." action).
• Tabbed PMX importer inspector (Model, Rig, Animation, Materials), split into per-tab editors under
  Editor/Importers/.
• Camera clip frame-rate selection (30 / 60 / 120 fps) in the VMD Clip Converter. The native 30 fps VMD
  camera timeline is sub-sampled at higher integer multiples, preserving real-time duration and MMD hard
  cuts.
• MMDConstants.k_VMDNativeFrameRate (30 fps) constant.

Changed

• Edge-drawing PMX materials now use lilToon's outline-capable variant (Hidden/lilToonMultiOutline);
  the plain lilToonMulti shader has no outline pass. URP and built-in fallbacks still drop edges.
• Reorganized editor scripted importers and inspectors into Editor/Importers/, with shared VMD
  progress reporting extracted to VMDClipProgress.

Fixed

• lilToon outline width now converts correctly into lilToon's 1 cm slider unit (previously over-scaled),
  and outline color is no longer affected by scene lighting, matching MMD's flat edges.

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v0.1.0

[0.1.0] - 2026-06-23

First release of Unity MMD Tools (UMT).

Added

• PMX 2.0 model import (with PMX 2.1 read compatibility): meshes, materials, bones with bindposes, and
  vertex-morph blend shapes, generated as sub-assets of the imported .pmx.
• MMD runtime: MMDTransformManager for MMD transform order, constraints, and IK solving, plus an
  optional Bullet-backed MMDPhysicsManager for rigid bodies and joints.
• VMD motion conversion to AnimationClip with runtime-solved and baked-FK modes, optional physics
  baking, and morph/IK-toggle curves.
• Optional humanoid Avatar generation for retargeting.
• Japanese (Kawazu) and Chinese (PinyinNet) name romanization for materials, bones, and morphs.
• BMP and TGA texture decoding in addition to Unity's built-in PNG/JPG support.
• Native physics plugin for Windows x64 and Android arm64-v8a.
• Editor entry points: scripted importers for .pmx and .vmd assets, plus Tools ▸ UMT ▸ VMD Clip
  Converter and Tools ▸ UMT ▸ Create Default Resources menu commands.

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