Planar Shadows - Lightweight URP Shadows

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🕹️ Web Demo 📖 Documentation

Overview

A lightweight planar shadow solution built on the URP framework, designed for efficiency and high visual quality.

Features

• Fade shadows — greater distance = lighter shadow

• Non-stacking shadows (fade disabled in this mode)

• Stylized shadows with custom textures (adjustable scale & flow speed)

• Configurable shadow color & transparency

• Supports complex objects (multiple parts, submeshes)

• Volume-based configuration for different scenes

• SRP Batcher compatible

Shadow Types

• StaticHeightShadow — renders at a fixed height for objects 

• OriginHeightShadow — renders at the model’s origin height

• RootHeightShadow — renders at the composite object’s root height

• RaycastGroundShadow — detects ground height via raycast, ideal for platform jumping

Performance & Optimization

Engineered for minimal resource usage, with full batching support and extremely low shader overhead — perfect for mobile platforms.

Ideal for Low-End Configurations

Even if you use ShadowMap for high-quality shadows, this solution can serve as the low-quality fallback, ensuring that even low-end devices display shadows.

Full Source Code & Demo Assets Included

• Complete C# scripts and shaders, 100% editable

• Demo asset usage governed by "Third-Party Notices.txt"

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