PileGen - Procedural Pile & Clutter Generator

Create fully procedural piles of rocks, books, bottles, crates, debris, and more — directly inside the Unity Editor.

No models. No textures. No external assets.

Every shape, surface, and normal is generated procedurally.

Fully Procedural — Zero External Assets Required
All geometry is generated via CPU mesh generation. All surfaces use procedural shaders. Every pile is completely unique. No textures. No third‑party assets. No modeling required.

30+ Ready‑to‑Use Presets
Instantly generate:
• Rock piles
• Book stacks
• Bottle collections
• Wooden crates
• Metal pipes
• Alchemy potions
• Kitchen clutter
• Soda cans
• Tin cans
• Barrels
• Wood planks
• Debris
• And more

Drag. Drop. Generate.

Procedural Fracture System
(New in 1.1.1)
Shatter any generated shape into realistic shards — no physics engine required.

Fracture Shape Modifier
Add fracture directly to any shape rule. Composes naturally with the modifier stack — Scatter(5) + Fracture(8) = 40 independent shards per placement.

Fracture Pile Action
One-click shattering of your entire generated pile in-editor. Shards become independent GameObjects with convex colliders, ready for physics or baking.

5 Fracture Styles:
• Uniform — natural irregular chunks (rocks, concrete)
• Splinter — long-axis bias (planks, bones)
• Grid — world-aligned cuts (tiles, masonry)
• Radial — pie-wedge slices (columns, wheels)
• Glass — radial + concentric rings (hollow bottles, glassware)

Full control per style:
Cap Mode (Solid fill or open cuts), Shard Gap, Hide Probability (ruined/damaged looks), Inner Material slot, seed override.

13 Procedural Material Types
Each material includes unique surface patterns, procedural normals, and per‑instance color variation (no flickering). Rock · Wood · Brick · Crate · Book · Glass · Metal · Fabric · Ceramic · Concrete · Foliage · Plastic · Generic

Dual Shading System
Switch per profile:
Standard Mode • Triplanar PBR shading • Fully procedural surface detail
Biome Mode • Stylized low‑poly palette shading • Perfect for stylized or mobile projects

Mix and match freely.

7 Pattern Library Overlays
Layer additional procedural detail onto any material: Voronoi · Stripes · Checker · Waves · Dots · Marble · Scales No textures required.

12 Primitive Types
Cube · Sphere · Icosahedron · Rock (Voronoi) · Cylinder · Torus · Pipe · Plane · Extrude · Lathe · Compound · Prefab

Advanced Shape Systems
Extrude Primitive
Sweep any 2D silhouette along a Bézier path.

Rock Primitive
Generate unique Voronoi rock hulls — every instance is one‑of‑a‑kind.

Lathe & Compound Systems
• 40+ lathe profiles (bottles, vases, jars, cans, columns)
• Compound shapes (crates, pallets, chairs, tables)
• Built‑in Lathe & Extrude profile editors

7 Stackable Shape Modifiers
Per-shape procedural operations, applied in any order:
• Scatter — random clones within a radius
• Array — linear stacks and rows
• Transform — fixed offset, rotation, scale
• Noise — Perlin vertex displacement
• Bend — sine-based Y-axis curve
• Jitter — low-poly vertex offsets
• Fracture — BSP shard generation (New)

6 Vertex Shape Modifiers
GPU‑side deformations (zero cost when disabled): Taper · Twist · Bulge · Squash · Round · Vertex Noise

Physics‑Based Settling
One‑click simulation:
• Pieces fall naturally
• Real collision stacking
• Fully deterministic with seed control

Texture Baking Pipeline
Bake everything into:
• Single texture atlas
• Auto‑generated UVs
• Standard URP/Lit material

Perfect for: Mobile · VR · Lightmapping · Optimization passes

Production‑Ready Baking Tools
Mesh combining (single draw call) · Texture atlas baking · URP/Lit material conversion · LOD generation · Static batching · Prefab saving · Multi‑material support

LowPoly / Palette Shader
The PileGen/LowPolyStyle shader uses 1D palette textures with per‑island color randomization for stylized visuals. Includes built‑in Palette Generator Tool.

Flexible Workflow
Quick Preset Mode (generate without a full profile) · Count & Scale multipliers · Circle or Rectangle footprint · Per‑generator placement overrides · Auto Generate / Auto Settle live preview · Scene Manager for batch operations

Powerful Custom Inspectors
Interactive 3D pile preview with orbit camera · Material Browser · Shape Browser · Palette Browser · Seed control with instant variations · Per‑layer shape control · Distribution curves (density, height, scale) · Full ShaderGUI for all material properties

REQUIREMENTS
• Unity 2022.3.62f3+ (LTS recommended, Unity 6 supported)
• Universal Render Pipeline (URP)

WHAT'S INCLUDED
• Full C# source code
• 30+ pile presets with materials
• 40+ lathe shape profiles
• Compound shape profiles (crate, pallet, chair, table)
• 100+ shape presets
• Custom triplanar shader (SRP Batcher + DOTS instancing compatible)
• DOTS / Entities SubScene support
• Comprehensive handbook & API reference
• Demo scene