progress on the 2d visibility mesh demo. We built out raytracing from scratch, now just need to take advantage of it to fill in the rest of the triangles

Avian is getting pretty big nowadays! To mark the start of a new release cycle, I spent some time improving our processes moving forward. Notably, Avian now stores migration guides in-repo, similar to Bevy: github.com/avianphysics...

there's so much cool ui in pokemon za

Cinnog is what I use for This Week in Bevy. thisweekinbevy.com

Observer filters in Bevy with EntityCommandsTrigger doesn't do what most people expect it to. Here's some experimentation in enabling `On<Event, Filter>` style observers to power the separation of observer functions that target different types of entities www.christopherbiscardi.com/bevy-observe...

Work in progress support for Vec<String> component data in Skein/Blender. Supporting arrays in Blender is a whole heap of custom handling (you can't just say "this is an array, thanks"), but the full lifecycle is working from component definition, to ui, to gltf data now.

understatement of the decade

This has been my side project for more than a year now. I am very exited for Typst and think that it deserves a lot more usage in business software. Give Oicana a try and let me know what you think 😊

skein is up on the bevy assets page woo bevy.org/assets/

A quick visibility mesh implementation in bevy. Sort vertices globally by angle relative to player, iterate, and build mesh. repeatedly .insert_attribute visibility mesh positions on a Mesh every frame.

some notes on using ktx2. My use case lately has been to pack and compress substance designer textures, for which kram has become my go-to tool. www.christopherbiscardi.com/substance-de...

I just released version 0.4 of Avian, an ECS-driven physics engine for @bevy.org. This is the biggest release yet, featuring 3x performance(!), overhauled forces and joints, voxel colliders, Bevy 0.17 support, and much more. As always, release notes can be found here: joonaa.dev/blog/09/avia...

"oh I'll make a video on mipmaps" :later: So if you export from substance and run the output through the ktx2 CLI you can then run it through kram with specific block compression settings per data type...

substance -> exr -> ktx array textures -> bevy's standard material processing -> with a basic height test to pick a material. (this wasn't really the height-related example, this was the array textures pipeline test). First image is a merge of the other two materials.

messing with substance designer -> exr -> ktx conversions

Hades 2 is very good. One of the few decisions I question is the Typhon health bar not appearing. A 4 or 5 stage fight, with no progress indicator, where you have to guess "is this a storyline, 'I must lose' kind of fight?", where the same attacks will double in damage without warning.

Bevy 0.17 porting progress of the community crates I'm maintaining and/or depending upon. Green crates are released, yellow are in progress. `bevy_web_asset` was upstreamed into Bevy itself, so looks like I won't be porting that one :) #bevyengine #rustlang

Light textures are new in bevy 0.17, and using them with image handles is easy. To drive them with a material we have to render that material to a texture and use it in both places. This enables generating textures or animating scrolling IVs, etc youtu.be/H4ysDezt8Vo

Observers became Events and EntityEvents in Bevy 0.17, while 0.16's Event became Messages. Here's how hooks and observers work in 0.17 youtu.be/BtwNc_sx1pE

Bevy 0.17 is out now! It features Raytracing, Improved Observers / Events, UI Widgets, Rust Hotpatching, Light Textures, DLSS, Tilemap Chunks, Web Assets, Reflect Auto-Registration, UI Gradients, Raymarched Atmosphere, Virtual Geometry BVH Culling, and more! bevy.org/news/bevy-0-17

Got hot reloading working w/ @chrisbiscardi.bsky.social 's excellent skein plugin. Wrote a small Blender plugin to attach gizmos to any Bevy component managed by skein - also picks up numeric values from components to drive gizmo dimensions + can show gizmo in Bevy space (no Y↔Z conversion) #bevy

🐇 added higher 'cobble' path tiles 🦜 simple walkway composition #rustlang #bevyengine #gamedev

I switched to the Avian physics engine! Its excellent documentation made this a pretty simple process. The physics now run at a fixed rate, independent of the frame rate. This helps a lot with determinism and things keep their velocity, even if the rendering isn't fast enough. #bevy #gamedev

I stayed up too late, but it looks cooool

exciting new work from jasmine exploring dynamic global illumination in @bevy.org 0.17

there's going to need to be like 10 pantheons for silksong

It has been a month since Bevy's fifth birthday. We asked the community to reflect on the past year and outline their hopes and dreams for the next year. You can read the community's reflections on Bevy's fifth year here: bevy.org/news/communi...

video game difficulty is subjective, which makes takes on difficulty that treat it as objective somewhat uninteresting. ex: saying silksong is "difficult" doesn't yield any interesting design points. Talking about the wide gap in fight lengths between tool use and pin-only is far more interesting.

experimenting with the view transitions apis

Was asked about external Bevy component support in applications like Blender through glTF files, and while its a bit earlier than being "ready to propose" as a bevy glTF extension here's where I'm at from using Skein as a testing ground www.christopherbiscardi.com/bevy-compone...

Some Bevy Birthday thoughts www.christopherbiscardi.com/bevy-5th-bir...

I finally got around to redeploying my personal site. Its now a static Leptos/wasm site using Islands www.christopherbiscardi.com

🍃 developed a simple (fake, but cheap) physics system 🦊 Kyu (the pet) now uses it as movement #rustlang #bevyengine #gamedev

Haven't mentioned it a lot lately but Leptos is still my go-to for web work. Islands is *fantastic* for content based sites, and having a Rust server running for web apps means I can literally ignore it and know its still running just fine

I'm not sure exactly when docs.rs auto-collapsed the search bar by default, but that's basically always The Thing I'm There To Do so it has introduced an additional click to many page loads for me

Progress on height-lerped texture transitions powered by vertex color data. uses standardmaterial extensions and custom attributes. There are two color textures here.

Mesh slicing

silksong is amazing, but I really have a hard time understanding why anyone would put corpse running in a game where a primary method of fun is exploration

Hey #bevy :) I'm in the mood for a special edition of the weekly #bevymergetrain: expanding our focus from community-reviewed PRs to also cover a bout of issue and PR triage. Follow along, and see how the #opensource sausage is made! You might even learn a thing or two about #rust or #gamedev.

Just pushed a branch of Hanabi, the GPU VFX system for #bevyengine, with a significant overhaul of the way scheduling works: github.com/pcwalton/bev... In my tests, I can now have 500+ different particle *systems*, each with many particles, on screen at once and still hit 120 FPS.

r16uint -> r32float texture conversion is... not going great. at least the dimensions are correct

hot take: talking about "the" bevy editor is a trap... we should focus on building composable, modular tools that deliver incremental value, just like everything else we do in @bevy.org www.charlotte.fyi/posts/toward...

"here's how Tunic, a game that shows maybe 20 pieces of grass at the same time, does its grass" "you should've used a vertex shader for Performance Reasons"

Realtime raytraced DI/GI

simpler implementation, more satisfying result. no "physics" edge cases. Not sure how I'm going to handle multiple targets yet, but the player-only is fine for now.

I think the physics-based joint approach is going to have issues with the colliders ending up inside each other.

self reacting to your own messages in discord is such a weird "manufactured agreement" style of communication

crates.io/crates/dlss_... Just published my open source crate for using DLSS in wgpu! Supports both super resolution and ray reconstruction. Also look forward to DLSS support in the upcoming Bevy 0.17 release!

wrote about some of the work i've done in the past year and what i'm hoping to accomplish next year in bevy! ✨ www.charlotte.fyi/posts/bevys-...