Studio and Graph

MetaHuman DNA

• Load DNA File: Reads a .dna file off disk so the other DNA nodes can work on it.
• Load DNA: Pulls the MetaHuman DNA out of a skeletal mesh so the other DNA nodes can read it.
• DNA To Mesh: Builds the mesh a DNA file describes, with its skeleton and skin weights, at the LOD you pick.
• Get DNA Blendshape: Applies one of the DNA's blendshape targets to a mesh so you can see the shape it makes.
• Get DNA Expression: Poses the DNA's mesh at one named expression and tells you which bones that expression moves.
• Set DNA Expression: Records a mesh you re-posed by hand back into the DNA as one of its expressions.
• Set DNA Blendshape: Writes a sculpted shape back into the DNA as one of its blendshape targets, and optionally onto the coarser LODs too.
• Bake DNA Geometry: Makes your sculpted mesh the DNA's new neutral shape, so every expression in the file then runs on top of your sculpt.
• Get DNA RBF Pose: Isolates a single pose from one of the DNA's RBF solvers, so you can see what that corrective does and which joints it drives.
• Set DNA On Skeletal Mesh: Attaches a DNA onto a Skeletal Mesh asset. Works with the legacy DNA storage below engine 5.8 and the new DNA asset format on 5.8 and above. Editor only.
• Set DNA RBF Pose: Records a corrective back into one of the DNA's RBF poses: the trigger rotations, the solver's RBF parameters and the corrected joint pose.
• Validate DNA: Checks a MetaHuman DNA for the damage that makes a rig deform wrongly without ever throwing an error. The DNA passes through untouched and the verdict comes out on pins.
• Create DNA: Builds a new MetaHuman-shaped DNA from a mesh - create, author a rig from scratch for a head, face or body.
• Create DNA From Skeletal Mesh: Builds a new MetaHuman-shaped DNA directly from a Skeletal Mesh asset - create, author a rig from scratch for a head, face or body.
• Edit DNA Animated Map: Adds, renames, sets LOD membership on, appends a driving row to, or removes an animated map - RigLogic's own conditional-table shape, authoring side.
• Edit DNA Blendshape Channel: Adds, renames, edits LOD membership, wires or removes a blend shape channel, or drops one target row - the identity/wiring authoring counterpart to Set DNA Blendshape.
• Edit DNA Expression: Adds, renames, wires or removes raw controls (expressions) - the DNA entities joint groups, blend shape channels, animated maps and RBF solvers drive from.
• Edit DNA GUI Control: Adds, edits, renames or removes a GUI control's raw-control mapping rows - RigLogic's own conditional table, authoring side only.
• Edit DNA LODs: Drops a DNA down to a subset of its LODs, or appends new LODs cloned from an existing one - edit, keep, add, remove, drop LOD.
• Edit DNA ML: Adds or removes ML controls and removes neural networks - a network's own weights/layers are authored only by the Python verb add_neural_network.
• Edit DNA PSD: Adds, replaces or removes PSD correctives - controls computed as the weighted product of their own factor controls.
• Edit DNA RBF Pose: Adds or removes RBF poses and RBF pose controls on a DNA's corrective layer - the trigger/output structure, not the corrected joint pose itself.
• Edit DNA RBF Solver: Adds or removes whole RBF solvers on a DNA - drivers, settings and LOD membership; pads stay hidden and are managed automatically.
• Edit DNA Twist Swing: Adds, edits or removes twist/swing parameter-group setups - the quaternion-driven joint corrective tables RigLogic evaluates, authoring side only.
• Get DNA GUI Controls: Lists a DNA's GUI controls and evaluates one control's effect on the rig controls it drives, the same way RigLogic computes it.
• Merge DNA: Combines a body DNA and a head/face DNA into one DNA - merge, combine body and head/face into a single rig.
• Pose DNA Controls: Poses a DNA's mesh from a sparse set of GUI control values, evaluated through the DNA's own RigLogic rig - the same slider values a MetaHuman face/body board would drive.
• Transfer DNA Rig: Transfers a rig - face expressions, RBF, twist/swing, joint behavior - from a template DNA onto a target DNA that already has its own geometry and skeleton, via a hand-editable bone mapping.

Studio and Graph › MetaHuman DNA

Load DNA File

This is how you get at a DNA that is not sitting inside a skeletal mesh yet.

When to use it

This is how you get at a DNA that is not sitting inside a skeletal mesh yet.

How to use it

1. 1

   Browse to a .dna file

2. 2

   Wire the DNA output onward

   Into DNA To Mesh, Get DNA Expression, Bake DNA Geometry, or any other DNA node.

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Studio and Graph › MetaHuman DNA

Load DNA

Editor-only node. Runs only in Mesh Morpher Graph inside the Unreal Editor, because it reads or writes Unreal Engine assets. Not available in the standalone Mesh Morpher Studio app.

When to use it

Pulls the MetaHuman DNA out of a skeletal mesh so the rest of the DNA nodes can read it. Handles both the newer MetaHuman Character storage and the older one, so you do not have to know which your character was made with.

How to use it

1. 1

   Pick a skeletal mesh that carries DNA

2. 2

   Wire the DNA output onward

   Into DNA To Mesh, Get DNA Expression, Bake DNA Geometry, or any other DNA node.

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Studio and Graph › MetaHuman DNA

DNA To Mesh

Builds the mesh a DNA file describes, in its neutral shape, with the DNA's own skeleton and skin weights on it. This is the mesh you sculpt on before baking anything back.

When to use it

Builds the mesh a DNA file describes, in its neutral shape, with the DNA's own skeleton and skin weights on it. This is the mesh you sculpt on before baking anything back.

How to use it

1. 1

   Wire a DNA in

2. 2

   Pick the LOD you want

   0 is the densest.

3. 3

   The Mesh output is the mesh, ready to edit

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Studio and Graph › MetaHuman DNA

Get DNA Blendshape

One named blendshape target out of a DNA, as a mesh, optionally filtered to the expression that uses it. Good for inspecting or re-sculpting a single shape. For the combined result an animator woul...

When to use it

One named blendshape target out of a DNA, as a mesh, optionally filtered to the expression that uses it. Good for inspecting or re-sculpting a single shape. For the combined result an animator would actually see, Get DNA Expression.

Use the expression filter. A DNA carries hundreds of blendshapes, and without it the dropdown is a wall of names you have to read end to end.

How to use it

1. 1

   Wire a DNA in, and the mesh from DNA To Mesh into Mesh

2. 2

   Pick a blendshape

   Filter by expression first if the list is unwieldy.

3. 3

   The Mesh output is the same mesh with that shape on it

   The mesh you feed in has to be the same mesh at the same LOD, with the same vertex count. Anything else and the node stops with a count mismatch.

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Studio and Graph › MetaHuman DNA

Get DNA Expression

One named expression, evaluated out of a DNA with all its blendshapes combined and the skeleton deformation applied, handed back to you as a mesh. Turned all the way on, so you can see what a contr...

When to use it

One named expression, evaluated out of a DNA with all its blendshapes combined and the skeleton deformation applied, handed back to you as a mesh. Turned all the way on, so you can see what a control actually does before you change it.

Seeing, sculpting on or comparing an expression is what it is for. For one shape in isolation rather than the combined result, use Get DNA Blendshape.

Set DNA Expression closes the loop.

How to use it

1. 1

   Wire a DNA in

2. 2

   Pick an expression and an LOD

3. 3

   Mesh is the posed mesh

   Bones tells you which joints that expression drives.

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Studio and Graph › MetaHuman DNA

Set DNA Expression

Bakes a modified expression mesh back into the DNA by solving what per-joint deltas would produce it. The write half of Get DNA Expression.

When to use it

Bakes a modified expression mesh back into the DNA by solving what per-joint deltas would produce it. The write half of Get DNA Expression.

The pairing is strict. Edit the mesh that Get DNA Expression produced, at the same LOD, without changing its vertex count or order, or the solve has nothing to correspond against.

When you meant to change one named shape rather than a whole expression, Set DNA Blendshape.

How to use it

1. 1

   Pose the expression with Get DNA Expression, then move its bones

2. 2

   Wire that mesh into Mesh and the same DNA into DNA

3. 3

   Pick the expression to overwrite and press Set Expression

   The mesh must still carry the DNA's own bone names. If the skeletons do not line up, nothing is written.

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Studio and Graph › MetaHuman DNA

Set DNA Blendshape

Replaces or adds one blendshape target in a DNA from a mesh you supply, and can propagate it down the LOD chain. Pair it with Get DNA Blendshape, keeping vertex layout and LOD identical between the...

When to use it

Replaces or adds one blendshape target in a DNA from a mesh you supply, and can propagate it down the LOD chain. Pair it with Get DNA Blendshape, keeping vertex layout and LOD identical between the two, or the deltas come out against the wrong base.

How to use it

1. 1

   Wire the DNA in

   Put the unsculpted mesh on Mesh and your sculpted copy on Target.

2. 2

   Pick the blendshape to overwrite

3. 3

   Press Set Blendshape

   The DNA output carries the new deltas. Mesh and Target must have the same vertex count and order, and both must match the DNA's own mesh at that LOD. Sculpt on a copy of DNA To Mesh, do not retopologise it.

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Studio and Graph › MetaHuman DNA

Bake DNA Geometry

Writes edited mesh and skeleton data back into a DNA, optionally propagating the change to higher LODs and carrying morph targets along. This ends the round trip that DNA To Mesh starts, the way Ba...

When to use it

Writes edited mesh and skeleton data back into a DNA, optionally propagating the change to higher LODs and carrying morph targets along. This ends the round trip that DNA To Mesh starts, the way Bake Mesh ends a mesh round trip.

How to use it

1. 1

   Build the mesh with DNA To Mesh, sculpt it, wire it into Mesh

2. 2

   Set LOD Index to the LOD you built from and pick what to write

3. 3

   Press Bake DNA

   Keep the vertex count the same and the bake is exact. Change it and the DNA meshes are rebuilt from scratch, which is when Transfer Morph Targets and Quad Export start to matter and LOD propagation stops working. Rename or add bones and the bake refuses outright: the joint names on your mesh have to be the ones the DNA already knows.

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Studio and Graph › MetaHuman DNA

Get DNA RBF Pose

One pose of one RBF solver inside a DNA, evaluated on its own, with the mesh and the bones that pose drives.

When to use it

One pose of one RBF solver inside a DNA, evaluated on its own, with the mesh and the bones that pose drives.

How to use it

1. 1

   Wire a DNA in

2. 2

   Pick a solver

   The pose list refills to match it.

3. 3

   Read the three outputs

   Mesh is the fire pose plus this pose's joint-group column, the same conversion Get DNA Expression uses. Trigger is the fire pose only, ready to wire into Set DNA RBF Pose's Trigger. Bones tells you which joints the pose's column drives.

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Studio and Graph › MetaHuman DNA

Set DNA On Skeletal Mesh

Editor-only node. Runs only in Mesh Morpher Graph inside the Unreal Editor, because it reads or writes Unreal Engine assets. Not available in the standalone Mesh Morpher Studio app.

When to use it

Writes a DNA onto a Skeletal Mesh asset, the same slot Load DNA reads back out. Feed it from Load DNA File, Bake DNA Geometry, or any DNA chain, pick the Skeletal Mesh to write into, and press Set DNA On Skeletal Mesh.

It replaces whatever DNA the mesh had. On newer engines the DNA is stored as the mesh's MetaHuman DNA Data; on older ones it uses the legacy storage, and you do not have to know which. The mesh is marked changed so a save keeps it.

How to use it

1. 1

   Wire a DNA in

2. 2

   Pick the Skeletal Mesh asset to write into

3. 3

   Press Set DNA On Skeletal Mesh

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Studio and Graph › MetaHuman DNA

Set DNA RBF Pose

Re-records one RBF pose of a DNA: the joint rotations that trigger it, the solver's RBF parameters, the pose's scale and name, and the corrected joint pose it applies. The write half of Get DNA RBF...

When to use it

Re-records one RBF pose of a DNA: the joint rotations that trigger it, the solver's RBF parameters, the pose's scale and name, and the corrected joint pose it applies. The write half of Get DNA RBF Pose.

How to use it

1. 1

   Isolate the pose with Get DNA RBF Pose, move its joints, wire that mesh into Mesh and the same DNA into DNA

2. 2

   Optionally wire a second mesh into Trigger to re-record which driver rotations fire the corrective. Unwired reads those drivers from Mesh

3. 3

   Pick the solver, then the pose

   The solver settings and pose scale load from the DNA when you pick, so what you see is what is stored.

4. 4

   Adjust anything you want changed and press Set RBF Pose

   This is bone work, not sculpting: it reads where the joints ended up, not where the vertices ended up. The mesh must still carry the DNA's own bone names — joints that do not line up are left untouched.

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Studio and Graph › MetaHuman DNA

Validate DNA

Inspects a MetaHuman DNA for structural defects, passes the DNA straight through, and publishes the verdict on pins. LOD index tables, joint hierarchy, RigLogic behaviour matrices, skin weights, ve...

When to use it

Inspects a MetaHuman DNA for structural defects, passes the DNA straight through, and publishes the verdict on pins. LOD index tables, joint hierarchy, RigLogic behaviour matrices, skin weights, vertex layouts, blendshape targets.

How to use it

1. 1

   Drop it anywhere in a DNA chain

   DNA in, DNA out, nothing is changed.

2. 2

   Read the findings in the details panel, worst first

   Each one says what breaks and where.

3. 3

   Branch on Is Sound to keep a broken DNA out of an export

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Studio and Graph › MetaHuman DNA

Create DNA

Builds a brand new MetaHuman-shaped DNA from a mesh: skeleton, skin weights and geometry, plus a structurally complete but functionally identity behavior layer underneath - no controls, no blendsha...

When to use it

Builds a brand new MetaHuman-shaped DNA from a mesh: skeleton, skin weights and geometry, plus a structurally complete but functionally identity behavior layer underneath - no controls, no blendshapes, so RigLogic evaluates it and nothing moves. This is a geometry-and-skeleton round trip, not a rig round trip. To edit an existing DNA and keep its rig, use Bake DNA Geometry instead.

How to use it

1. 1

   Wire your base mesh (bones + skin weights already on it, e.g. from a DNA To Mesh sculpt or an Auto Rig) into Mesh. It becomes LOD 0

2. 2

   Optionally wire coarser LODs into Additional LODs, element i becoming LOD i+1

3. 3

   Pick Body Part - it decides the db-name convention and the default mesh name, nothing geometric

4. 4

   Press Create DNA

   This is a geometry-and-skeleton round trip, not a rig round trip: the file this produces has no GUI controls and no blendshapes. Chain Create DNA → Set DNA Blendshape to author shapes on top of it.

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Studio and Graph › MetaHuman DNA

Create DNA From Skeletal Mesh

Editor-only node. Runs only in Mesh Morpher Graph inside the Unreal Editor, because it reads or writes Unreal Engine assets. Not available in the standalone Mesh Morpher Studio app.

When to use it

Create DNA's asset-picker-sourced sibling: the same build - skeleton, skin weights, geometry, plus a structurally complete but functionally identity behavior layer, and the same optional Scaffold Rig - built directly from a project Skeletal Mesh asset instead of a mesh pin. Editor only, the same reason Load Skeletal Mesh is: it reads the asset's mesh description, which a packaged build strips.

How to use it

1. 1

   Pick a Skeletal Mesh asset

2. 2

   Optionally list Keep LODs (empty imports every LOD the asset has; asset LOD i becomes DNA LOD i)

3. 3

   Pick Body Part - it decides the db-name convention and the default mesh name, nothing geometric

4. 4

   Optionally turn on Scaffold Rig to donate generic expressions/RBF/twist- swing from a template DNA - see the property's own tooltip

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Studio and Graph › MetaHuman DNA

Edit DNA Animated Map

Adds, renames, sets LOD membership on, appends a driving row to, replaces the rows of, or removes animated maps on a DNA - MetaHuman's eyeBlink / eyeLidTightener-style values, each driven by a raw ...

When to use it

Adds, renames, sets LOD membership on, appends a driving row to, replaces the rows of, or removes animated maps on a DNA - MetaHuman's eyeBlink / eyeLidTightener-style values, each driven by a raw control through the same [From, To] interval and Slope*x+Cut line a GUI control's own rows use - as an ordered list of operations applied atomically.

How to use it

1. 1

   Wire a DNA in

2. 2

   Build an ordered list of operations in the Operations panel below the properties

   Each entry picks Add / Rename / Set LODs / Add Row / Set Rows / Remove, a target/new name, and whichever of the LOD checkbox row / raw-control picker + From-To-Slope-Cut fields / rows table its own Op uses. Picking a map shows that map's own current rows (read-only) so Add Row's own "appends after this" is never a guess, and on a Set Rows entry also loads those rows into the rows table to edit (Load Rows From DNA does the same at any time). Untick an entry to keep it staged without running it.

3. 3

   Press Apply Animated Map

   Every enabled entry runs in order against the result of every earlier one - rename a map then Add Row on it in the very next entry and the row lands on the map under its new name. The whole batch is atomic: the first refusal publishes nothing at all, not even the operations before it.

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Studio and Graph › MetaHuman DNA

Edit DNA Blendshape Channel

Adds, renames, edits LOD membership, wires an expression to, removes outright, or drops one target row of a blend shape channel, as an ordered list of operations applied atomically - the identity/w...

When to use it

Adds, renames, edits LOD membership, wires an expression to, removes outright, or drops one target row of a blend shape channel, as an ordered list of operations applied atomically - the identity/wiring/removal authoring counterpart to Set DNA Blendshape, which only ever creates the inert channel from a sculpted mesh and writes its targets.

How to use it

1. 1

   Wire a DNA in

2. 2

   Build an ordered list of operations in the Operations panel below the properties

   Each entry picks Add / Rename / Set Lods / Wire Expression / Remove Channel / Remove Target, a target (Channel Name, or Mesh Name + Target Index for Remove Target), and whichever of New Name / the LOD checkboxes / Control Name apply to it. Untick an entry to keep it staged without running it.

3. 3

   Press Apply Blendshape Channel

   Every enabled entry runs in order against the result of every earlier one - rename a channel then wire it in the very next entry and the wire finds it under the new name. The whole batch is atomic: the first refusal publishes nothing at all, not even the operations before it.

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Studio and Graph › MetaHuman DNA

Edit DNA Expression

Adds, renames, wires or removes raw controls (expressions) on a DNA, as an ordered list of operations applied atomically - the authoring counterpart to whatever reads them (PSDs, joint groups, blen...

When to use it

Adds, renames, wires or removes raw controls (expressions) on a DNA, as an ordered list of operations applied atomically - the authoring counterpart to whatever reads them (PSDs, joint groups, blend shape channels, animated maps, RBF solvers, and Get DNA GUI Controls' own raw-control table).

How to use it

1. 1

   Wire a DNA in

2. 2

   Build an ordered list of operations in the Operations panel below the properties

   Each entry picks Add / Rename / Wire / Remove / Set Wiring / Unwire, a target, and whatever fields that op needs. Untick an entry to keep it staged without running it.

3. 3

   Press Apply Expressions

   Every enabled entry runs in order against the result of every earlier one - add a raw control then wire it in the very next entry and the wire finds it under its new name. The whole batch is atomic: the first refusal publishes nothing at all, not even the operations before it.

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Studio and Graph › MetaHuman DNA

Edit DNA GUI Control

Adds, edits, renames or removes GUI controls (MetaHuman face-board sliders) on a DNA, as an ordered list of operations applied atomically - the authoring counterpart to Get DNA GUI Controls, which ...

When to use it

Adds, edits, renames or removes GUI controls (MetaHuman face-board sliders) on a DNA, as an ordered list of operations applied atomically - the authoring counterpart to Get DNA GUI Controls, which only reads and evaluates.

How to use it

1. 1

   Wire a DNA in

2. 2

   Build an ordered list of operations in the Operations panel below the properties

   Each entry picks Add / Edit Rows / Rename / Remove, a target/new name, and (for Add / Edit Rows) a Mapping Rows table, the same [From, To] interval / Slope*x+Cut line RigLogic evaluates inside it. Picking a control on an Edit Rows entry replaces that entry's rows with what is currently on the DNA; Load Rows From DNA does the same at any time. Untick an entry to keep it staged without running it.

3. 3

   Press Apply GUI Control

   Every enabled entry runs in order against the result of every earlier one - rename a control then edit its rows in the very next entry and the edit finds it under the new name. The whole batch is atomic: the first refusal publishes nothing at all, not even the operations before it.

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Studio and Graph › MetaHuman DNA

Edit DNA LODs

Drops a DNA down to a subset of its own LODs, appends new LODs cloned from an existing one, or both in the same pass.

When to use it

Drops a DNA down to a subset of its own LODs, appends new LODs cloned from an existing one, or both in the same pass.

How to use it

1. 1

   Wire a DNA in

2. 2

   Keep LODs: list the LODs to keep, ascending, e.g. [0, 2] to keep only LOD 0 and LOD 2 (renumbered 0 and 1). Leave empty to keep every LOD

3. 3

   Add Cloned LODs: how many new LODs to append, each a byte-identical copy of Clone From LOD - "immediately valid, evaluates identically". Clone From LOD indexes the mesh after the keep-filter above, so -1 (the default) always means "the last LOD that survived the filter"

4. 4

   Press Apply LODs

   A dropped LOD's own meshes, blendshape targets and LOD-only behavior rows are gone - re-adding it later starts from whatever the DNA looks like then, not from what was dropped.

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Studio and Graph › MetaHuman DNA

Edit DNA ML

Adds or removes ML controls, and removes neural networks, on a DNA, as an ordered list of operations applied atomically - the wave-3 authoring counterpart to whatever a Get/Create DNA node can only...

When to use it

Adds or removes ML controls, and removes neural networks, on a DNA, as an ordered list of operations applied atomically - the wave-3 authoring counterpart to whatever a Get/Create DNA node can only read. A network's own weights and layers are authored only by the Python verb add_neural_network (a real layer needs its full weight/bias matrices, not a handful of Slate fields), so this node never adds one - do not go looking for that option here.

Operations is a list edited in the Operations panel below the properties: Add Operation appends an entry, and each entry has an enabled tick, an Op (Add ML Control / Remove ML Control / Remove Neural Network), a New Name box (Add ML Control), an ML control target (Remove ML Control, picked from a plain-name list), a Network target (Remove Neural Network, picked from a list labelled "net <i>: <in> in → <out> out, <layers> layer(s), LODs <list>" - a read-only info line under the card repeats it) and a Force Cascade tick (Remove ML Control), Up/Down/Remove. An unticked entry is skipped entirely (never validated) and reported as "skipped".

Apply ML runs every enabled entry in order, each resolved against the result of every earlier one - an ML control is targeted by its name, which stays correct across the batch even after an earlier entry adds or removes other controls (unlike a PSD's positional index); a network is targeted by its plain index, renumbered down by an earlier Remove Neural Network in the same batch exactly like a PSD's own Remove. This is atomic: the first entry that refuses publishes nothing at all, not even the operations before it, and Summary names exactly which entry and why. A pin change only updates Summary (ML control/network counts and one preview block per operation, including a live reference-cascade preview for Remove ML Control) without touching the DNA, the same pattern as Edit DNA PSD.

An ML control no neural network writes stays 0 at evaluation time - harmless, exactly like an unused raw control. Removing a referenced ML control (a PSD factor, a neural network's own input or output) refuses without Force Cascade; Summary lists every kind found before you press anything. Removing a neural network renumbers every later network's own index, its per-LOD membership lists and every mesh-region row that named it; Summary surfaces that renumbering plus, when this DNA carries the plugin's own mlbe op-graph section, whatever the cascade dropped from it.

How to use it

1. 1

   Wire a DNA in

2. 2

   Build an ordered list of operations in the Operations panel below the properties

   Each entry picks Add ML Control / Remove ML Control / Remove Neural Network, a New Name box (Add ML Control), an ML control picker (Remove ML Control), a Network picker (Remove Neural Network) and a Force Cascade tick (Remove ML Control). Untick an entry to keep it staged without running it.

3. 3

   Press Apply ML

   Every enabled entry runs in order against the result of every earlier one. The whole batch is atomic: the first refusal publishes nothing at all, not even the operations before it.

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Studio and Graph › MetaHuman DNA

Edit DNA PSD

Adds, replaces or removes PSD correctives on a DNA, as an ordered list of operations applied atomically - a PSD is a control computed as the weighted product of its own factor controls, the missing...

When to use it

Adds, replaces or removes PSD correctives on a DNA, as an ordered list of operations applied atomically - a PSD is a control computed as the weighted product of its own factor controls, the missing authoring counterpart to every PSD a Get/Create DNA node can only read.

How to use it

1. 1

   Wire a DNA in

2. 2

   Build an ordered list of operations in the Operations panel below the properties

   Each entry picks Add / Replace Factors / Remove, a Factors table (control + weight rows, Add / Replace) and, for Replace / Remove, a PSD target and a Force Cascade tick. Untick an entry to keep it staged without running it.

3. 3

   Press Apply PSD

   Every enabled entry runs in order against the result of every earlier one. The whole batch is atomic: the first refusal publishes nothing at all, not even the operations before it.

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Studio and Graph › MetaHuman DNA

Edit DNA RBF Pose

Adds or removes RBF poses and RBF pose controls on a DNA's corrective layer - the structural authoring counterpart to Get DNA RBF Pose, as an ordered list of operations applied atomically.

When to use it

Adds or removes RBF poses and RBF pose controls on a DNA's corrective layer - the structural authoring counterpart to Get DNA RBF Pose, as an ordered list of operations applied atomically.

How to use it

1. 1

   Wire a DNA in

2. 2

   Build an ordered list of operations in the Operations panel below the properties

   Each entry picks Add Pose / Remove Pose / Add Pose Control / Remove Pose Control. Add Pose needs a solver, a new name, a driver value per that solver's own driver control (sized automatically once you pick the solver) and, usually, at least one output. Untick an entry to keep it staged without running it.

3. 3

   Press Apply RBF Pose

   Every enabled entry runs in order against the result of every earlier one - add a pose control then wire a new pose's own Outputs at it in the very next entry and it resolves under the name that entry just created. The whole batch is atomic: the first refusal publishes nothing at all, not even the operations before it.

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Studio and Graph › MetaHuman DNA

Edit DNA RBF Solver

Adds or removes whole RBF solvers on a DNA, as an ordered list of operations applied atomically - drivers, the wire-format settings and LOD membership for Add; a poses policy (remove/keep) plus an ...

When to use it

Adds or removes whole RBF solvers on a DNA, as an ordered list of operations applied atomically - drivers, the wire-format settings and LOD membership for Add; a poses policy (remove/keep) plus an optional force cascade for Remove. Editing an existing solver's own 12 fields stays on Set DNA RBF Pose; this node only adds whole solvers or removes them.

How to use it

1. 1

   Wire a DNA in

2. 2

   Build an ordered list of operations in the Operations panel below the properties

   Each entry picks Add / Remove. Add needs a New Name, a Driver Controls table (raw controls, in order - the panel shows a live quartet badge next to it) and the solver settings; Remove needs a Solver picker (pads are hidden - they are never a valid target) plus Keep Poses / Force Cascade. Untick an entry to keep it staged without running it.

3. 3

   Press Apply RBF Solver

   Every enabled entry runs in order against the result of every earlier one - adding a solver then removing it again in the very next entry works. The whole batch is atomic: the first refusal publishes nothing at all, not even the operations before it.

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Studio and Graph › MetaHuman DNA

Edit DNA Twist Swing

Adds, edits (Set) or removes twist/swing parameter-group setups - the quaternion-driven joint corrective tables RigLogic evaluates - as an ordered list of operations applied atomically.

When to use it

Adds, edits (Set) or removes twist/swing parameter-group setups - the quaternion-driven joint corrective tables RigLogic evaluates - as an ordered list of operations applied atomically.

How to use it

1. 1

   Wire a DNA in

2. 2

   Build an ordered list of operations in the Operations panel below the properties

   Each entry picks Add / Set / Remove, Twist or Swing, and (Set / Remove) a Setup picked from the per-kind cache below it. Add and a flagged Set need the driver quaternion (exactly 4 raw controls, x/y/z/w), an Axis, and at least one output joint with a blend weight. Set only writes the fields ticked Set Axis / Set Inputs / Set Outputs - an untouched field keeps the setup's current value. Untick an entry to keep it staged without running it.

3. 3

   Press Apply Twist Swing

   Every enabled entry runs in order against the result of every earlier one. The whole batch is atomic: the first refusal publishes nothing at all, not even the operations before it - Summary names the failing entry.

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Studio and Graph › MetaHuman DNA

Get DNA GUI Controls

Lists every GUI control (slider) a DNA exposes and, for the one you pick, evaluates exactly what a chosen value on it drives - which raw controls, and at what values - computed the same way RigLogi...

When to use it

Lists every GUI control (slider) a DNA exposes and, for the one you pick, evaluates exactly what a chosen value on it drives - which raw controls, and at what values - computed the same way RigLogic's own conditional table would compute it.

How to use it

1. 1

   Wire a DNA in

2. 2

   Pick a control from the dropdown (lists every one, in DNA order, regardless of the pick)

3. 3

   Set Control Value and read Inspection (in the details panel) to see exactly what that control drives and how far

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Studio and Graph › MetaHuman DNA

Merge DNA

Combines a body DNA and a head/face DNA into one DNA: every joint, control, mesh and behavior table renumbered into a single index space, with the shared-by-name joints (head, neck01, neck02 and th...

When to use it

Combines a body DNA and a head/face DNA into one DNA: every joint, control, mesh and behavior table renumbered into a single index space, with the shared-by-name joints (head, neck_01, neck_02 and the rest of the chain they hang off) collapsed to one entry each. This is index-space concatenation, not a geometric re-fit - a MetaHuman-family pair is already authored pre-aligned in one world space, so nothing needs to move.

How to use it

1. 1

   Wire a body DNA into Body DNA and a head/face DNA into Head DNA

2. 2

   Read Report and Shared Joints in the details panel - they update on every pin change without running the merge itself

3. 3

   Press Merge Now

   A precondition refusal leaves DNA empty; Report says exactly why.

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Studio and Graph › MetaHuman DNA

Pose DNA Controls

Poses a DNA's mesh from a sparse set of GUI control values - only the ones you have moved off zero - evaluated through the DNA's own RigLogic rig: GUI-to-raw mapping, corrective and machine-learned...

When to use it

Poses a DNA's mesh from a sparse set of GUI control values - only the ones you have moved off zero - evaluated through the DNA's own RigLogic rig: GUI-to-raw mapping, corrective and machine-learned behaviour, joints, blendshapes and animated maps, exactly as the rig would compute them, then publishes the posed mesh.

How to use it

1. 1

   Wire a DNA in

2. 2

   Open the details panel and move sliders

   Releasing one (or pressing Enter) reposes; dragging does not, so a fast pose stays fast.

3. 3

   Mesh is the result; Bones and Pose Summary (in the details panel) say what actually moved

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Studio and Graph › MetaHuman DNA

Transfer DNA Rig

Donates a rig - generic face expressions, RBF, twist/swing, joint behavior - from a template DNA onto a target DNA that already has its own geometry, skeleton and identity behavior, without rebuild...

When to use it

Donates a rig - generic face expressions, RBF, twist/swing, joint behavior - from a template DNA onto a target DNA that already has its own geometry, skeleton and identity behavior, without rebuilding it from a mesh. The same transfer Create DNA's own Scaffold Rig option runs, as its own node - use this to (re-)donate a rig onto a DNA you already have.

How to use it

1. 1

   Wire the DNA that should receive the rig into Target DNA (it keeps its own geometry/skeleton/neutrals - only rig layers are donated onto it)

2. 2

   Wire the rig donor into Template DNA

3. 3

   Optionally turn on Retarget Values to also convert the donated values so a target joint sitting in a different local frame than its template counterpart still gets a correct rig - off is the existence-only transfer, byte-identical to what Create DNA's own Scaffold Rig has always shipped

4. 4

   Edit Bone Mapping if the target's bone names do not match the template's (prefilled automatically; Auto-Map / Clear force a full re-map / empty it)

5. 5

   Press Transfer Now

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