multimesh3d component

Godot's MultiMeshInstance3D: the multimesh asset in source, its mesh drawn once per instance in one call, each instance's color tinted over the node's.…

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Properties
Script functions

3d · render · 17 properties · 3D

Godot's MultiMeshInstance3D: the multimesh asset in source, its mesh drawn once per instance in one call, each instance's color tinted over the node's. The node keeps its own copy of the instances, so a script's edits stay on it; children draw once.

In a scene, multimesh3d is the node key that applies it. A script reaches each property below as a field on node.multimesh3d: reading one asks the running component, and assigning one leaves the rest alone. The whole table is node.multimesh3d.get() and node.multimesh3d.set(table).

Properties

property	type	default	description
`cast_shadow`	bool	`true`	Whether the instances cast a shadow from the lights that cast
`color`	color	`[1,1,1,1]`	Tint under every instance's own colour, as channel floats or #rrggbb / #rrggbbaa
`depth_test`	bool	`true`	Let the scene hide it; off draws it over everything drawn before it and leaves the depth as it was
`dot_color`	color	`[0,0,0,0]`	The vertex dots' colour; an alpha of zero takes the node's own. Not drawn on a skinned mesh, which Balaur poses in its own vertex stage
`dot_size`	float	`0`	Size of a dot drawn on every vertex; zero draws none. Not drawn on a skinned mesh, which Balaur poses in its own vertex stage. Not on WebGL2 At least 0.
`dot_sizing`	enum	`world`	What `dot_size` counts: `world` is pixels at one world unit from the camera, thinning with distance, `screen` is pixels One of `world`, `screen`.
`draw_surface`	bool	`true`	Whether the surface draws; off leaves the wireframe and the dots alone
`light_layers`	int	`-1`	Light-layer bitmask; a `light3d` lights this when their masks share a bit. -1 is every layer
`material`	asset · `material`	—	The material every instance draws with; empty draws with the built-in one
`receive_shadows`	bool	`true`	Whether shadows land on it; off lights it as if nothing stood between it and every light
`render_layers`	int	`-1`	Layer bitmask; a `camera3d` draws this when their `render_layers` share a bit. -1 is every layer
`segmentation_id`	int	`0`	The id `render.snap_aov("segmentation")` colours this node by; nodes sharing one share a colour. Zero takes one of its own, from 1 up At least 0.
`source`	asset · `multimesh`	—	The multimesh asset: the mesh and the instances it is drawn at
`texture`	asset · `texture`	—	Image file, project-relative, or a `texture` asset; empty draws the colour alone
`wireframe_color`	color	`[0,0,0,0]`	The wireframe's colour; an alpha of zero takes the node's own. Not drawn on a skinned mesh, which Balaur poses in its own vertex stage
`wireframe_sizing`	enum	`world`	What `wireframe_width` counts: `world` is pixels at one world unit from the camera, thinning with distance, `screen` is pixels One of `world`, `screen`.
`wireframe_width`	float	`0`	Width of a line drawn along every triangle edge; zero draws none. Not drawn on a skinned mesh, which Balaur poses in its own vertex stage. Not on WebGL2 At least 0.

Asset types this component references: material, multimesh, texture.

Script functions

Methods of node.multimesh3d, the handle a node carrying this component exposes. Every handle also has get(), set(table), patch(table), has() and remove().

From render:

method	what it does
`buffer() -> any`	Every instance as one flat list of floats in Godot's `MultiMesh.buffer` layout: 12 of transform in 3D or 8 in 2D, then 4 of colour and 4 of custom data.
`instance_color(int) -> any`	The colour one instance draws in.
`instance_count() -> int`	How many instances the node holds.
`instance_custom_data(int) -> any`	One instance's four floats of custom data, as a colour.
`instance_transform(int) -> any`	One instance's transform: a `Transform3d`, or a `Transform2d` on a 2D node.
`instances() -> any`	Every instance as the `multimesh` asset spells it, so `assets.save` writes a scripted layout into a file.
`populate(any) -> any`	Godot's Populate Surface, and a row, a ring or a grid: the instances a layout would write, worked out from `seed`, returned in the `multimesh` asset's shape rather than set. `kind` is `render.POPULATE_SURFACE` with a `surface` node, `POPULATE_ROW` (`count`, `step`), `POPULATE_RING` (`count`, `radius`) or `POPULATE_GRID` (`counts`, `step`); `rotation`, `tilt` and `random_scale` vary each instance, as fractions, around `scale`.
`set_buffer(any)`	Replace every instance from one flat list in the layout `buffer` answers in, for a Godot port that sets `buffer`. Building the list in a script costs more than one `set_instance_transform` per instance.
`set_instance_color(int, any)`	The colour one instance draws in.
`set_instance_count(int)`	How many instances the node holds. Those below the count keep where they were; new ones are plain, at the node.
`set_instance_custom_data(int, any)`	Four floats a material's shader reads for one instance, as a colour or a list.
`set_instance_transform(int, any)`	Place one instance with a `Transform3d`, or a `Transform2d` on a 2D node. A shear is kept, as the instance's `basis`.
`set_instances(any)`	Replace every instance with a list in the `multimesh` asset's shape.
`set_visible_instance_count(int)`	How many instances draw, from the first; -1 draws them all.
`visible_instance_count() -> int`	How many instances draw; -1 is all of them.