qcell VS 3D-Cellular-Automata-WGPU

An unsoundness issue in TCell and TLCell was discovered and fixed by GitHub user steffahn. This is due to Rust TypeId taking into account the lifetime, i.e. you get a different type-id for the same type with different lifetimes, and Rust will automatically cast between them. The solution is to force invariance with some type voodoo. This is a weird corner of Rust I'd never understood before. Ideally std::any::TypeId docs should be improved. (This bug does not affect the safety of correct use of the crate, but fixing it blocks a malicious coder from getting potential unsoundness through a code review.)

This is slightly unrelated, but this thread made me dig up my own code that I was writing which was going to be essentially the same as the QCell crate, until I discovered that the QCell crate exists, at which point I stopped working on it and contributed to QCell instead (this PR).

GitHub link: https://github.com/LelsersLasers/3D-Cellular-Automata-WGPU (The branches are very messy... I recommend you get latest working downloads from the website at the top of this comment)

Link to website: 3D Cellular Automata [WGPU/Rust]

This project is modeled after a similar project I did this summer in C++ and Raylib. For more information about that project, see its GitHub page: https://github.com/LelsersLasers/3D-Cellular-Automata-Raylib I choose to rewrite it in Rust using WGPU for 2 main reasons: 1) It could run on the web 2) I could use compute shaders to greatly increase performance (currently runs more than 10 times faster natively and 4 times faster on the web than the old version) You can play with this simulation without downloading anything by visiting: https://lelserslasers.itch.io/3d-cellular-automata-wgpu-rust This GitHub page from this project can be found here: https://github.com/LelsersLasers/3D-Cellular-Automata-WGPU The project has many branches, but only some work/are currently being updated (I recommend you get the latest working downloads from the itch.io link above). Cell rules: 2,6,9/4,6,8,9/10/M Survival: 2, 6, 9 Spawn: 4, 6, 8, 9 State: 10 Neighborhood: Moore This video is not sped up at all, it is running in real time at 40~50 ticks per second (a bit higher when not recording). Computer (Galaxy Book Flex) specs: - CPU: Intel® Core™ i5-1135G7 Processor @ 2.40 GHz - GPU: Intel® Iris® Xe Graphics (integrated) - RAM: 8 GB (LPDDR4x) Thanks for watching!

Edit: GitHub link: https://github.com/LelsersLasers/3D-Cellular-Automata-WGPU/tree/main/cellular_automata