Unity VFX Graph Skill Skill

Unity VFX Graph Skill

Visual Effect Graph development for GPU-accelerated particle systems in Unity.

Overview

This skill provides capabilities for creating high-performance visual effects using Unity's Visual Effect Graph, leveraging GPU compute for millions of particles.

Capabilities

Particle Systems

Create GPU particle systems
Configure spawn, initialize, update, output contexts
Handle particle attributes
Implement particle collision

Procedural Effects

Use noise and turbulence
Implement SDF-based effects
Create mesh sampling effects
Build camera-based interactions

Visual Authoring

Design effects in VFX Graph editor
Create subgraphs for reuse
Implement property sheets
Build event-driven effects

Integration

Connect to C# scripts
Handle events and parameters
Integrate with Timeline
Manage performance budgets

Prerequisites

Unity 2021.3+ with VFX Graph package
SRP (URP or HDRP) project
Compute shader capable hardware

Usage Patterns

Spawning Particles from Code

public class VFXController : MonoBehaviour
{
    [SerializeField] private VisualEffect vfx;

    void Start()
    {
        // Set properties
        vfx.SetFloat("SpawnRate", 100f);
        vfx.SetVector3("EmitterPosition", transform.position);
    }

    public void TriggerBurst()
    {
        // Send event
        vfx.SendEvent("OnBurst");
    }
}

Property Binding

// Expose VFX properties via C# bindings
vfx.SetInt("ParticleCount", 1000);
vfx.SetGradient("ColorOverLife", gradient);
vfx.SetTexture("ParticleTexture", texture);

Best Practices

Use subgraphs for reusable components
Profile GPU performance
Set particle count limits
Use LOD for distant effects
Optimize texture sampling

References

VFX Graph Documentation

Agent Skills: Unity VFX Graph Skill

Install this agent skill to your local

Skill Files