Practical High-Performance Rendering on Mobile Platforms (GDC 2023)

Introduction

This repo includes the demo project for the following GDC 2023 talk

Practical High-Performance Rendering on Mobile Platforms
https://schedule.gdconf.com/session/practical-high-performance-rendering-on-mobile-platforms/890038

This project contains three parts: a Scriptable Render Pipeline named PMRP, a Visibility Baking Tool, and a Lightmapper.

Project Members

• guoxx - Xiaoxin Guo <guoxx@me.com> (he/him)
• weakknight - Tianyu Li <ltyucb@gmail.com> (he/him)

Frame Dissecting

Render Pipeline

Feature

• Highly optimized for Mobile Platforms
• Specular Occlusion
• Platform-agnostic Shadow Bias

Visibility Tool

Feature

• Visibility Baking with least square vertex optimization
• Python implementation for vertex visibility baking is included at PracticalMobileRendering/Assets/Scripts/RenderPipeline/Editor/PythonScripts/vertex_visibility_baking_least_square_fit.py
• The solver uses numpy and scipy from PracticalMobileRendering/ProjectSettings/requirements.txt, with clr_array_convert.py handling NumPy/.NET array conversion for Unity's Python integration
• Baked visibility data is consumed by the DefaultLit shader through TEXCOORD2; the Adam sample already includes generated *_visibility.asset meshes under PracticalMobileRendering/Assets/Resources/Adam/Geo/

Lightmapper

Feature

• Dynamic Baking

Movie_003.mp4

• Lightmap and Volumetric Lightmap
• Path Tracing integrator with Resampled Importance Sampling + Light BVH + Irradiance Caching
• Including Specular-To-Diffuse light paths

How-to-use

Prerequisites

• Unity 2023.1.0b6 or newer
• Windows 10 SDK version 10.0.19041.1 or newer
• Graphics card with raytracing support