New render arch design

[hanyangl5]

branch refractor tracks the progress

main parts of this work

• Support Vulkan & DirectX12

• Multithread Rendering
  Multithread Rendering #54

• Shader & Descriptors
  Shader Compiling #19
  Descriptorset Management #31

• Fixed Pipeline -> Render Graph
  Render Graph #55

• GPU Driven Rendering
  GPU Driven Rendering #56

[hanyangl5]

http://enginearchitecture.realtimerendering.com/ provides a lot of rendering architecture designs.

Unity

design principles and goals

• empower creators
  • content goals & visual artistic choices
• deploy everywhere
  • variety platforms
  • scalable creation, different platform similar result
  • diverse applications, more than gaming
• deep customization
  • srp makes creators to modify rendering pipeline
• easy extensibility
  • assets store
  • community

architechture journey

built-in pipeline -> srp -> hybrid dots srp

srp arch

Hybrid DOTS SRP

requirements:

• larger & denser world, streaming
• grows cpu cores, more simulations, dynamic behaviors
• keep data in gpu memeory, some obejcts&buffers are used in many passes

DOTS: data-oriented tech stack

The material data is now persistent in the GPU memory, and uploaded only when changed
making more data GPU persistent
persistent descriptorset

• ECS
• Job System
• Burst Compiler
• Data Conversion

DataModel

query all components, compare version number of previous frame, if version number is larger, we need to modify data and upload to gpu.
DOTS version tracking

Dynamic Instancing

Traditional GPU instancing is too limited

[hanyangl5]

Halcyon Architecture - SEED - EA

Halcyon is a R&D framework to explore the future of interactive entertainment.

• hybrid real-time raytracing
• deep learning agents
• procedural level generation.
• no precomputation

a rapid prototyping framework different purpose than frostbite

GOAL

• Minimize busy-work

  • Occlusion/GI,Lighting/Collion/LOD

• Only Target modern API, DX12 Vulkan Metal

• Multi-GPU

  • https://devblogs.microsoft.com/directx/rise-of-the-tomb-raider-explicit-directx-12-multigpu-and-a-peek-into-the-future/#:~:text=Heterogeneous%20mGPU%20differs%20in%20that%20the%20GPUs%20in,using%20all%20of%20the%20silicon%20in%20your%20system.

• Local & Remote Streaming

• minimal amount of boilerplate code

• Variety Render Techs

• Effect and Flexible Rendering

• Minimal effort to add a new API&platform

hybrid render pipeline

Rendering Components

• Render Backend
• Render Device
• Render Handles
• Render Commands
• Render Graph
• Proxy