Garment Support: How does it work?

What is Garment Support and how does it work?

Summary

This page will teach you how garmentSupport works โ€“ the system that Cyberpunk2077 uses to tuck pants into boots and shirts under jackets. It contains theory, which you don't need to understand to use the system.

Credit goes to psiberx (discord post with initial explanation of the algorithm), island dancer for providing screenshots and know-how, and Auska for making morphtarget/garmentSupport import able in Wolvenkit.

Wait, that's not what I want!

If you want to create garment support, check Garment support from scratch

If you want to use garment support in an existing mod, you only need to use Component prefixes

If your garment support is shrinking too far, check the section for Painting Garment Support in Blender

If you have other problems, see Troubleshooting Garment Support at the end of the page.

What is garment support?

The engine morphs garments to avoid clipping โ€” for example, if you equip a pair of boots and V's jeans no longer cover the shoes, but get tucked under.

This process is accomplished via 'parameters' on the mesh:

Component prefixes

Garment support will be applied based on garmentScore. For this, the prefix of the component name will be considered (components are named in your .app or .ent file's component array).

A high garment score means that the item is "on top", squishing anything worn "below". (See The algorithm for details.)

The prefixes are as follows:

h0_

t0_

s0_

l0_ ...

Any component with a 0 in its prefix will be treated like a body mesh (no deform/squishing of any meshes with x0_ prefixes across .ent files)

h1_

Head inner (mask, sunglasses)

h2_

Head outer (helmet, bandana)

t1_

Torso inner (shirts)

t2_

Torso outer (jackets, coats...)

s1_

Shoes

l1_

legs (pants that aren't leggins)

How it looks if it's broken

The algorithm

TL;DR: High garment score means "on top", items below will get squished.

Components with the same prefix in the same .ent file will not squish each other, e.g. l1_stockings and l1_pants will not deform each other, but they will deform s1_socks

The game calculates the garment score by checking the prefix of component names, where the one with the lowest prefix is the innermost:

s0 = 0    // no prefix will also be 0
l0 = 10
a0 = 20
t0 = 30
h0 = 40
s1 = 50
l1 = 60
t1 = 70
i1 = 80
hh = 90
h1 = 100
h2 = 110
t2 = 120

After considering the component name, the game will consider the tags in the .ent's visualTagSchema:

PlayerBodyPart = -2000
Tight = -1000
Normal = 0
Large = +1000
XLarge = +2000

An example for t0_000_pma_base__full (the default body component, torso+legs):

+30          prefix: t0_
-2000        visualTag: PlayerBodyPart

โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”
-1970

Painting Garment Support in Blender

based on experimental research by revenantFun

TL;DR:

  1. Make sure that you have the parameters _GarmentSupportWeight, _GarmentSupportCap and Col, and that all of them are in the format Face Corner > Byte Color

  2. _GarmentSupportWeight: Vertex paint it red (RGB 1, 0, 0)

  3. _GarmentSupportCap: Vertex paint it black (RGB 0, 0, 0) if it isn't

  4. Col: Vertex paint it black (RGB 0, 0, 0) if it isn't

  5. You're done!

Step by step, with explanations

In a given mesh, garment support is handled by two color attributes: _GarmentSupportWeight and _GarmentSupportCap. In Blender, these are found in the Data panel under Color Attributes, together with the third attribute, Col.

For exporting, all three of these must be in the format Face Corner > Byte Color

Here's how it looks like:

Fixing up old meshes

If you are editing vanilla items, you may find parameters of the type Vertex -> Byte Color with their names in ALL CAPS, such as _GARMENTSUPPORTWEIGHT and _GARMENTSUPPORTCAP. Delete them by selecting them and clicking the minus icon:

It's crucial to repeat this process for every submesh in your garment, or your attributes will not get written correctly on export.

If all you're doing is trying to preserve existing garment support before doing some light editing or refits on vanilla garments, you can stop right here!

If you're making a brand new item and making your garment support from scratch, however, you'll need to keep reading to find out how these parameters should look.

Painting Your Parameters

Garment support color attributes are edited in Vertex Paint mode in the viewport:

_GarmentSupportWeight

This attribute affects how the mesh behaves when layered with other garments:

ColourRGB valueExplanation

Black

0, 0, 0

heavy deform, lots of squishing (default behaviour)

Red

1, 0, 0

light deform, no squishing

Simple base game clothing will have a flat red layer. If you have a flat black layer, you may want to paint it red, as this will deform more than you might want.

_GarmentSupportCap

_GarmentSupportCap determines stopping points for the deformation effects of garment support. Like _GarmentSupportWeight, it is painted only with red and black.

ColourRGB valueExplanation

Black

0, 0, 0

no garment cap

Red

1, 0, 0

limited GS influence on the meshes below (more red = less squishing). The garment itself will serve as a delimiter.

With vanilla items, you will see red GarmentSupportCap on areas that will either

  • directly intersect with the body (the ends of sleeves and legs, the bottom of a shirt, the opening of a turtleneck...)

  • sit right above something that shouldn't be deformed (the player body, or a tight-fitting shirt, or the lapels of an open jacket)

The cap provides a shrinking limit, so without GarmentSupportCap, every part of your mesh will apply shrinking/tucking on the meshes layered "below".

Often, this is completely okay and your _GarmentSupportCap layer can be flat black. Otherwise, you need to paint red those parts which either cut straight through the body or butt right up against other items.

If this step is skipped, you can have unexpected clipping, but nothing will break. If your mesh seems like it's being too aggressive when you layer it over other things, and leaving holes in whatever you're trying to layer under it, try painting more of the inside faces red.

That all seems like a lot of work? Can I make this less worse somehow?

The simplest way to add functioning garment support to your custom item is to have a flat red _GarmentSupportWeight attribute, a flat black _GarmentSupportCap attribute, and a flat black Col attribute. Your mesh will export and, assuming you have the proper shapekeys, will morph in (more or less) the way you'd expect! The next page will outline this process step-by-step.

Every submesh of your garment must have these three attributes in order for garment support to function correctly - even submeshes that contain non-deformable things like accessories, buckles, chains, belts, etc.

Troubleshooting Garment Support

My garment support is shrinking too far!

Check Painting Garment Support in Blender โ€” paint it red, baby!

My garment support explodes on contact with another item!

It's not doing that to spite you. Most likely, you have a non-unique component ID, and the game can't tell the two items apart. Here's how to resolve that:

Importing with Garment Support

If that doesn't work, you still have the option to re-create Garment support from scratch in Blender

Yeeting Garment Support

This wil prevent your garment from shrinking under other, "larger" garments, and practically guarantee that it clips.

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