Frequently asked questions about Entity Component Systems

This FAQ is for anyone interested in ECS & modern, high performance game development. The goal is for answers to be short & correct, but not necessarily complete. The Resources section contains more in-depth articles.

https://github.com/SanderMertens/ecs-faq

#ecs #ecsfaq

What's new in C# 11 - C# Guide

Someday it will be available in Unity, so worth checking out

https://docs.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-11

#csharp

A Collection such as List, HashSet, Dictionary etc can be pooled and reused by using a CollectionPool.

In case you missed that Unity has added a built-in collection pool. Usage looks similar to ArrayPool<T> class in .NET.

https://docs.unity3d.com/2022.2/Documentation/ScriptReference/Pool.CollectionPool_2.html

#arraypool #collectionpool #optimization #memory

4 new Unity Features YOU'RE MISSING!

https://youtu.be/mCkjwJGtRI0

- Linear Object Positioning
- Random Object Positioning
- Properties Window - No More Locked Inspector
- Serialized Backing Field

#tips #editortips

Batching techniques in Unity (Last update: Sept 2020)

Comparison of Static Batching, Dynamic Batching, GPU Instancing, and SRP Batcher.

https://cmwdexint.com/2018/06/19/batching-techniques-in-unity/

#batching #rendering #optimization

A free Total Textures 19-pack Download Bundle (Download Only)

https://store.3dtotal.com/collections/ebooks/products/total-textures-19-pack-download-bundle-50-off-download-only

#assets #freeassets

Refactoring Data stored in Unity Prefabs, Scenes and other Assets

https://blog.gemserk.com/2022/04/24/refactoring-prefabs-and-unity-objects/

#refactoring #serialized

At Unity Labs we perform a great deal of experiments. These frequently produce 'gems' or small algorithms that are useful to the community by themselves. This is a repository of those gems.

Contains:
- Stabilizr : Object Stabilization for XR
- GizmoModule: Gizmos for EditorXR/Runtime
- PhysicsTracker: Bridging the gap between game code and physics simulation
- RunInEditHelper: Manage what is running in edit mode
- ModificationResponse
- MissingReferences: Track down references to missing assets or methods
and many more.

https://github.com/Unity-Technologies/SuperScience

#gems #editortool #superscience

Value and reference types in C#

https://youtu.be/ldq7ZByB4p8

#csharp #value #reference #stack #heap

Profiling CPU performance in Android builds with Android Studio - Unity Learn

https://learn.unity.com/tutorial/profiling-cpu-performance-in-android-builds-with-android-studio

#profiling #androidstudio #nativeprofiling

What options do I have for Automation and Unit Testing In Unity?

A registry listing all of the prominent options for automating UI testing in Unity. Provides a high level comparison of what each package offers. People may not realize that there are now many choices to automate UI testing in Unity, along with additional alternative options for unit testing
Inside my company we have very similar in-house solutions. It takes time and expertise to create such infrastructure from scratch, so packages provided in the list may help to save some time if used correctly.

https://forum.unity.com/threads/what-options-do-i-have-for-automation-and-unit-testing-in-unity.682720/

#automation #testing #performancetesting

Tentacle Shader Breakdown

A tentacle shader that wraps around a target object

https://www.cyanilux.com/tutorials/tentacle-shader-breakdown/

#shadergraph #tentacle #vertexshader

Unusual optimizations; ref foreach and ref returns

https://blog.marcgravell.com/2022/05/unusual-optimizations-ref-foreach-and.html

#optimization #foreach #ref

Unity performance optimization in Mile High Taxi

An example of how rendering a big city can be optimized and more.

https://youtu.be/eFD7bBgtVyg

#performance #optimization

Glitch/Wireframe Effect (with source code)

https://www.patreon.com/posts/glitch-wireframe-65951657

#shader #vfx #glitchvfx

A Glimpse into Unity Developer Interview

A good list of interview question examples with references to answers. Definitely doesn't contain everything that can be asked and covers a pretty basic level, but still worth checking out before an interview.

https://medium.com/@unity_dev/a-glimpse-into-unity-developer-interview-4f7d4656c76c

#interview #tips

Physics simulation on GPU with compute shader in Unity3D, tutorial

https://www.reddit.com/r/Unity3D/comments/7ppldz/physics_simulation_on_gpu_with_compute_shader_in/

#gpuphysics #compute #shader

Performance benefits of sealed class in .NET

Such performance benefits don't make a difference for most applications though.

https://www.meziantou.net/performance-benefits-of-sealed-class.htm

#sealed #performance

Deferred Rendering: Making Games More Life-Like

What's the difference between forward and deferred rendering. And a very high-level denoscription how deferred rendering is implemented.

https://www.copperpodip.com/post/deferred-rendering-making-games-more-life-like

#deferred #forward #rendering #graphicspipeline

Keyframes

Simple tweening for any data, akin to AnimationCurve & Gradient

https://github.com/neon-age/Keyframes

#editortools #timeline

If you select multiple assets of different types in Unity, you can narrow your selection to a specific type simply by clicking on it in the inspector.

https://twitter.com/TheMirzaBeig/status/1508768431675478034

#editortips