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BlueRoseNote/03-UnrealEngine/卡通渲染相关资料/渲染功能/ARC/Particle/Particle.md

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---
title: Particle
date: 2026-05-03 00:00:00
excerpt: ARC 引擎粒子系统修改分类索引
tags:
- ARC
- Particle
rating: ⭐
---
# Particle — 粒子系统
返回 [[ARC引擎修改总览]]
## 概述
ARC 引擎对粒子系统的修改较为集中,主要新增了粒子驱动的点光源接口和静态网格切换功能。
## 功能列表
| 功能 | 文档 | 说明 |
|------|------|------|
| 粒子点光源系统 | [[粒子点光源系统]] | IREDPointLightInterface + 静态网格切换 |
## 其他修改
### MeshParticle VertexFactory 修复
修复 4.25 版本的 MeshParticle 放置 Bug
```hlsl
// MeshParticleVertexFactory.ush
#if !PARTICLE_MESH_INSTANCED
Result.InstanceLocalToWorld = Primitive_LocalToWorld;
#else
Result.InstanceLocalToWorld = ParticleTransform;
#endif
```
非实例化模式下使用 `Primitive_LocalToWorld` 而非 `ParticleTransform`