Fx Domain 2D

Name	Type	Description
FX fx	FxState2D	FX state document です
フレーム数 frame_count	Int	この FX ドメインが持つ総フレーム数です
FPS fps	Int	この FX ドメインが持つ再生 FPS です
概要 summary	Text	現在の FX ドメインの短い概要です

Parameters

Name	Type	Default	Range	Description / Options
幅 width	Int	32	4–512	FX レーン 1 フレームぶんの横幅です
高さ height	Int	32	4–512	FX レーン 1 フレームぶんの高さです
総フレーム数 total_frames	Int	0	0–120	この FX レーンが何フレームぶんの結果を持つかです (0 = プロジェクト既定に従う)
FPS fps	Int	0	0–60	プレビューやベイク時に使う再生 FPS です (0 = プロジェクト既定に従う)
ループ loop_enabled	Bool	true	—	この FX レーンをループ前提として扱うかです
左右をつなぐ wrap_x	Bool	false	—	左右の端から出た粒子を反対側へ戻します。横方向につながる雨・雪・霧・火の粉を作る時に有効にします。大きな粒子や軌跡も端で欠けないよう描画されます
上下をつなぐ wrap_y	Bool	false	—	上下の端から出た粒子を反対側へ戻します。エフェクトを縦方向にもタイルとして繰り返したい時だけ有効にします
シード seed	Int	1	0–999999	emitter の揺らぎや force のばらつきを決める決定論的 seed です

Overview

Defines the time and spatial domain that forms the foundation of particle FX such as flames, smoke, and splashes. Always place it first in an FX lane and use it to set the size, frame count, FPS, and seed. Add content downstream with fx_emitter_2d and fx_force.

Usage tips

The standard FX lane is fx_domain_2d → fx_emitter_2d → fx_force → fx_rasterize → (finishing) → fx_bake_spritesheet. Build the complete lane first, then tune each stage.
Start with a small total_frames, around 6–10. Pixel-art FX often look best with crisp movement across only a few frames.
Treat seed as the reroll for the entire FX. If you do not like the shape, changing the seed is the quickest fix.

Related nodes

fx_emitter_2d / fx_force — add content to the state
fx_rasterize — converts the state to an image
fx_bake_spritesheet — performs the final bake

Read this first

Fx Domain 2D does not output an image by itself.
It creates the base FX state.
Add content with Fx Emitter 2D and Fx Force, then convert it to an image with Fx Rasterize.

When to use it

When starting a short-frame FX such as a flame, smoke plume, or splash
When you plan to bake the result later with Fx Bake SpriteSheet
When creating the base state before Palette Quantize or Pixel Cleanup

The most basic setup

Add Fx Domain 2D.
Set width / height / total_frames / fps.
Connect fx to Fx Emitter 2D.

The minimal lane is:

FxDomain2D -> FxEmitter2D -> FxRasterize -> Preview

Example

width = 32
height = 32
total_frames = 8
fps = 12
loop_enabled = true
seed = 1

At this point, the contents of fx have approximately this meaning:

{
  "version": 1,
  "domain": {
    "width": 32,
    "height": 32,
    "total_frames": 8,
    "fps": 12,
    "loop_enabled": true,
    "seed": 1
  },
  "emitters": [],
  "forces": []
}

Notes

Changing seed changes the result even with the same emitter and force settings.
total_frames and fps become the source of truth for Fx Bake SpriteSheet downstream.
P11 FX is a lightweight, bake-first FX lane, not a full fluid simulation.

Output Ports