Demystifying Floating Point Precision

Floating point numbers have limited precision. You have likely encountered bugs where things start breaking after too much time has elapsed, or after something has moved too far from the origin.
This post aims to show you how to answer the questions:
What precision do I have at a number?
When will I hit precision issues?

https://blog.demofox.org/2017/11/21/floating-point-precision/

#float

Floating Origin in Unity

How to mitigate floating point precision issues when dealing with large world games

https://manuel-rauber.com/2022/04/06/floating-origin-in-unity/

#floatingorigin

How to build Hot Reload For Unity

2 hot reload tools have been released recently (shared the previous one here before).
The author of this one also provided a tutorial with basics of the hot reload implementation.

https://immersivevrtools.com/Blog/how-to-build-hot-reload-functionality-for-unity

Repo: https://github.com/handzlikchris/HotReloadForUnity#fast-noscript-reload---ready-made-tool-is-available-on-the-asset-store

#hotreload

A simple color ramp (plus posterized reflections)

https://www.reddit.com/r/Unity3D/comments/1036wn8/a_simple_color_ramp_plus_posterized_reflections/

Shader graph: https://imgur.io/gallery/JGYSEF1

#sharergraph #toon #colorramp

Making string marshaling safe for the CoreCLR garbage collector

https://blog.unity.com/technology/making-string-marshaling-safe-for-coreclr-garbage-collector

#marshal

Localizing Unity Games As An Indie Dev

https://www.bjmalicoat.com/projects/localizingunitygames

#localization

water-shader-unity: Simulation of water in Unity

Realistic water was achieved by implementing selected water effects:
- Reflection
- Refraction
- Caustics
- Waves
- Flow
- Underwater fog

https://github.com/leonjovanovic/water-shader-unity

#water #shader

TextureMerge: Software to merge (or pack) textures into image channels, producing one image with up to four textures.

The tool to prepare assets for a very common optimization technique where you pack up to 4 grey scale textures into one by using different channels to save memory.

https://github.com/Fidifis/TextureMerge

#texturepacker #optimization #memory

Unity Threading; Provides helper APIs for multithreading in Unity.

Provides:
- Simple Threading
- Async Threading: helper methods to access to the Unity main thread or background threads using an async/await style
- Unity Coroutines: helper methods to reduce allocations in Unity coroutines.
- New Coroutines: a reimplementation of Unity coroutines that returns a value type instead to avoid allocations.
- Unity Jobs: helper methods to execute jobs in the Unity Job system.


https://github.com/Enderlook/Unity-Threading

#async #thread

UnityURP-MobileDrawMeshInstancedIndirectExample

A simplified sample that demonstrates DrawMeshInstancedIndirect API on mobile platforms. Only contains a simple CPU frustum culling (not even a quadtree) -> minimum compute GPU frustum culling (no Acceleration Algorithms), then just 1 DrawMeshInstancedIndirect call.
It also contains a RendererFeature(GrassBendingRTPrePass.cs) to render an offscreen RT(R8), which renders top-down view grass bending area (by trail renderer following moving objects)

https://github.com/ColinLeung-NiloCat/UnityURP-MobileDrawMeshInstancedIndirectExample

#drawmesh #instancing #grass #shader #compute

BurstCollections: Burst friendly (special) native collections for Unity

Contains:
Native2dTree
NativeAccumulatedProduct{T, Op}
NativeArray2d{T}
NativeBoundingVolumeTree{T}
NativeIndexedArray{Id, T}
NativeIndexedList{Id, T}
NativePointQuadtree
NativeStack{T}
NativeStackedLists{T}

In the repo there are use cases when these collections can be used to solve particular tasks.

https://github.com/andywiecko/BurstCollections

#burst #native #jobsystem

Water2D-Unity: 2D Interactive Water

https://github.com/MemoryLeakHub/Water2D-Unity

#water2d #water

⚙️ Math Breakdown: Anime Homing Missiles

https://blog.littlepolygon.com/posts/missile/

#feature #missile #bezier

Improving and expanding use cases: Physics changes in Unity 2022.2

New physics features to squeeze more performance:
- Batches physics queries
- A lot faster OnContact callbacks

https://blog.unity.com/technology/physics-changes-in-unity-2022-2

#physics

How to build Hot Reload For Unity and run it on device

The second part of the hot reload implementation series

https://immersivevrtools.com/Blog/how-to-build-unity-hot-reload-on-device

#hotreload

Simulations - Black Holes

A video that covers step-by-step how to simulate a black hole. Its amazing quality and production reminds me of Sebastian Lague videos, so definitely recommend to watch it.

https://youtu.be/yhDxBt72PU4

#shader #simulation #raymarching

URP-Custom-Post-Processing: A framework that intends to quickly extend volume post-processing in Unity URP. And some experimental custom post-processing implementation.

Can be used as a sample of ScriptableRendererFeature usage

https://github.com/SleeplessOwl0102/URP-Custom-Post-Processing

#postprocessing #urp #rendererfeature

Wind Waker Style Stencil Buffer Lights (URP & BIRP)

A great denoscription of the stencil buffer with samples to better describe the VFX

https://www.patreon.com/posts/wind-waker-style-78831006

#shader #stencil #light

How to save 2 sec+ loading time of your game

A great list of nontrivial tips on how to improve loading times gathered while optimizing a big mobile project.

https://medium.com/hypemasters/how-to-save-2-sec-loading-time-of-your-game-f53611bbea0a

#optimization #loading

NovaShader: Multi-functional shader for the Particle System that supports Universal Render Pipeline (URP) of Unity.

The repo also contains a number of samples.

https://github.com/CyberAgentGameEntertainment/NovaShader

#shader #particles #urp

(BIRP) World Position Effects Part 1: Sphere Radius

https://www.patreon.com/posts/19355776

#shader #dissolve