✨ Depth-To-Particle Unity Renderer Feature

A custom rendering feature based on URP in Unity that converts a custom-rendered depth map into particle effects.

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📘 Project Info

• Unity Version: 2022.3.53f1c1
• Render Pipeline: Universal Render Pipeline (URP)
• Demo Scene: Assets/Scenes/0.a.unity

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🎯 Project Overview

This project demonstrates a technique for generating particles based on depth information. By adding a custom Pass to target objects, it renders only the depth of specific areas. Combined with a Renderer Feature and a Compute Shader, these pixels are converted into particles for visual effects.

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🧠 Implementation Overview

1. Custom Shader Pass

   • Adds an extra Pass to the dissolving object.
   • This Pass renders only the depth information of the dissolving area, discarding other pixels.

2. ScriptableRendererFeature to Capture Render Target

   • A custom Renderer Feature is added in URP.
   • Specifies the Pass name and render Layer, writing the result to an RTHandle.

3. Compute Shader for Pixel Processing

   • Samples the render texture in the Compute Shader.
   • Filters pixels and computes world space coordinates.
   • Outputs valid coordinates to a buffer.

4. Particle Generation

   • Retrieves particle vertex data asynchronously on the CPU.
   • Procedurally renders particles based on the data.

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🧪 Effect Preview