DECAL COLLIDER – Ultimate Runtime Mesh & Collision Decals

🚀 Decal Collider removes the complexity from decal physics and surface projection.

Create alpha-trimmed visual meshes and perfectly matching MeshColliders from any decal source in just seconds.

No oversized hitboxes, no invisible collision areas — only what you see is what you collide with.

Designed for artists and programmers alike, Decal Collider works seamlessly in all Unity render pipelines and supports both editor-time and runtime workflows.

✨ Key Features

• One-Click Generation – Select your decal source → press Rebuild → visual mesh and collider are generated instantly.
• Pixel-Perfect Collision – MeshColliders are trimmed directly from the decal’s alpha mask, ensuring accurate physics interaction.
• 18 Projection Modes – Forward, reverse, double-sided, box volume, hemisphere and custom normal projection support.
• Live Scene Handles – Move, rotate, adjust depth and mesh offset directly inside the Scene view.
• Runtime & Editor API – Full C# API with XML documentation for procedural decals, pooling systems and analytics.
• Built-in Statistics Panel – View triangle count, raycast count, build duration and memory usage in real time.
• Undo-Safe & Prefab-Friendly – Fully compatible with Prefabs, Undo/Redo and works in both Edit and Play Mode.
• Performance Focused – Zero runtime GC allocations, dynamic LOD support and frustum culling for mobile and VR.
• Pipeline Agnostic – Automatically detects and supports Built-in, URP and HDRP without manual setup.

📂 What’s Included

• Core DecalCollider component (runtime + editor)
• Custom Inspector, gizmos and visual debugging tools
• Demo scenes showcasing real-world decal use cases
• Documentation and quick-start guides
• CC0 sample textures for testing and learning

🔌 How to Use

1. Import the package into your project.
2. Add DecalCollider to any GameObject (mesh, sprite or TMP source).
3. Adjust projection settings and size in the Inspector or Scene view.
4. Click Rebuild — your decal mesh and collider are ready.
5. (Optional) Control everything at runtime using the provided API.

🔖 Requirements

• Unity 2022.3 LTS or newer (Unity 6 compatible)
• Render Pipelines: Built-in, URP, HDRP
• No external dependencies or plugins required

• Need help or have a feature request? Join our Discord
• Thank you for checking out Decal Collider – happy projecting! 🎉