Snapchat
Guidelines for Snapchat pipeline
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Guidelines for Snapchat pipeline
Last updated
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Work must be carried out using the following software:
Blender - no specific version (final model placement with all textures and skeleton)
Photoshop - no specific version
Lens Studio v4.19 (setting up a ready-made model for AR)
Chose
"It is necessary to use only "Lens Studio version 4.19. Older or newer versions are strictly prohibited to use
It is very important that the model is made as qualitatively as possible.
The model must be well-detailed
fully comply with platform standards
follow chosen style
The model can be created in any software you like, but in the end, the model must be in Blender. All elements like external pockets; buttons; fasteners; belts etc. should be sewn into the model itself and made with textures as in the image below.
Here we have a shirt with body armour, the body armour is one piece with the shirt, i.e. the body armour is not a separate mesh that was connected to the shirt's mesh after all.
In this image, you can see that all the straps on the body armour are made through textures, as is the body armour itself; the collar and many of the large folds.
The image below shows an example of a shirt sleeve, the shirt on the left has volume, the shirt on the right has no volume.
Snapchat accessories are separate objects with their own textures and materials.
UV Layout uses general standards. No unique features on Snapchat here.
Texturing can be done in any program convenient for you, as long as the result is 3 textures:
Albedo
Normal
ORM texture is a texture that contains metallic and roughness textures, splited into RGB channels.
ORM texture is required by the platform.
Using metallic and roughness textures separately won't work in the right way
Opacity (optional) sometimes can be used, but requires splitting into different materials for proper work.
The material must be created in Blender
It must not have any extra nodes
The meshes that are originally placed on the bones must be removed. It is also forbidden to change the size of the bones, you must adjust your model to the size of these bones.
"The name of the 'inner' bones, highlighted in the list below, should be unchanged!"
"The bones must be in the T-position!"
Paint layers use general standards. No unique features on Snapchat here.
Naming uses general standards. No unique features on Snapchat here.
Morphing for the Snapchat requierments:
Then you want to hide part of the mesh - scale it to 0 and move down to -1000, this will help you avoid revealing geometry while the skeleton is moving in Lens Studio.
Customuse platform also requires adding masks to your designs. Here is how it looks like and works:
There are two types of masks:
Full body mask for - shirts, pants, costumes, body accessories, etc.
Head mask for - masks, hats, caps, face accessories, etc.
It is important to keep name of mask - "mask"
Here is a list of steps on how you should add a mask to your design:
Add mask mesh to your design file.
Adjust your outfit so every ending of your mesh will fit mask well. DO NOT edit mask in any way, edit asset.
Making vertex color mask on mask mesh. Mask with black color to hide parts of body which are located under asset in this way:
After all these steps save ONLY blend file and save/update your GLB file and all will be done, you don't need to add a mask anywhere else.
You will need to export your model with bones in FBX format.
To import your model into Lens Studio you will need FBX format.
"Be sure to clean out any excess files from your Blender file before exporting to FBX and GLB format"
Body tracking
Suitable for body and hand assets
Head tracking
Suitable for headwear and face masks
In the end of lens preparation, you need to add 4 scripts
Adding scripts to mesh :
Update texture (On Start) - Replaces the main mesh texture with the given one.
Update shapes (On Start) - Configure shape keys for the lens.
Add getShapes script to object tab first and rename it to original name, after that add it to appeared slot under update shapes script
Adding scripts to Screen Image:
Initialize Helpers (On Awake) - Helps other scripts to work.
Update Watermark (On Start) - Sets a custom watermark logo for the lens.
You can find more information
Check general UV Layout requirements .
You don't need to create bones from scratch, you need to take the ready-made bones from this "" and apply them to your model, this is mandatory.
Check general Paint Layers requirements .
Check general Naming requirements .
Check general Morphing requirements .
Download masks from .
Guide on the official Snapchat
Guide on the official Snapchat
Recent version of scripts can be found here -
