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tlottie
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Rust library for drawing Lottie animations
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README.md
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tlottie
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# tlottie Library for drawing [lottie animations](https://en.wikipedia.org/wiki/Lottie_(file_format)), written in Rust. - Micro-optimized and [benchmarked](#benchmarks) across 17k+ animations from Telegram, against [rlottie](https://github.com/Samsung/rlottie) and [thorvg](https://github.com/thorvg/thorvg). - SIMD on ARM NEON, x86_64 SSE2 AVX2 AVX512, and WASM: [web demo](https://dkaraush.github.io/tlottie/examples/web/). - Support of `fitz` modifier and color replacements. - Support of rendering into only alpha channel bitmap. - Safe. Lottie JSON is treated as untrusted input. - Zero dependencies[^1]. ### Building (Native) ```bash cargo rustc --release --features c-api --lib --crate-type staticlib # library will be built at target/release/libtlottie.a # include headers are at include/tlottie.h ``` ### Building (Web) ```bash rustup target add wasm32-unknown-unknown cargo build --target wasm32-unknown-unknown --release --no-default-features --features wasm --lib # .wasm will be built at target/wasm32-unknown-unknown/release-size/tlottie.wasm ``` Example on how to work with `tlottie.wasm` is at [examples/web/](https://github.com/dkaraush/tlottie/tree/dev/examples/web). ### Benchmarks Frame time, mainly compared to [rlottie2019](https://github.com/TelegramMessenger/rlottie). - [android arm, Samsung Fold7](https://dkaraush.github.io/tlottie/benchmarks/android-fold.html): **-64.7%** at 64px, **-55.8%** at 320px, **-52.0%** at 720px - [android arm, Samsung F15](https://dkaraush.github.io/tlottie/benchmarks/android-f15.html): **-62.7%** at 64px, **-42.0%** at 320px, **-23.0%** at 720px - [macOS arm](https://dkaraush.github.io/tlottie/benchmarks/macos.html): **-61.5%** at 64px, **-47.6%** at 320px, **-27.3%** at 720px - [linux x86](https://dkaraush.github.io/tlottie/benchmarks/linux.html)[^2]: **-70.0%** at 64px, **-50.2%** at 320px, **-36.4%** at 720px [^1]: Listed dependencies are only for GPU renderers, that are currently work in progress, expected to be useful only on large canvas sizes. [^2]: Tested on Threadripper PRO 9995WX at full core count, running tlottie's SSE2+AVX2+AVX-512 backend against rlottie's. Relative parity with rlottie2019 is worse here than on smaller cores because the vector span kernels are memory-bound at 720px; tlottie is faster than this on typical x86_64 laptops (see the AVX-512 breakdown in the report).
