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# Vello CPU
**CPU-based renderer**
[![Apache 2.0 or MIT license.](https://img.shields.io/badge/license-Apache--2.0_OR_MIT-blue.svg)](#license)
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[![Linebender Zulip chat.](https://img.shields.io/badge/Linebender-%23vello-blue?logo=Zulip)](https://xi.zulipchat.com/#narrow/channel/197075-vello)
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This crate implements the CPU-based renderer for Vello. It is optimized for running on lower-end GPUs or CPU-only environments, leveraging parallelism and SIMD acceleration where possible.
## Features
- Fully CPU-based path rendering pipeline
- SIMD and multithreading optimizations
- Fine rasterization and antialiasing techniques
## Usage
This crate serves as a standalone renderer or as a fallback when GPU resources are constrained.
## Minimum supported Rust Version (MSRV)
This version of Vello CPU has been verified to compile with **Rust 1.85** and later.
Future versions of Vello CPU might increase the Rust version requirement.
It will not be treated as a breaking change and as such can even happen with small patch releases.
<details>
<summary>Click here if compiling fails.</summary>
As time has passed, some of Vello CPU's dependencies could have released versions with a higher Rust requirement.
If you encounter a compilation issue due to a dependency and don't want to upgrade your Rust toolchain, then you could downgrade the dependency.
```sh
# Use the problematic dependency's name and version
cargo update -p package_name --precise 0.1.1
```
</details>
## Community
Discussion of Vello CPU development happens in the [Linebender Zulip](https://xi.zulipchat.com/), specifically the [#vello channel](https://xi.zulipchat.com/#narrow/channel/197075-vello).
All public content can be read without logging in.
Contributions are welcome by pull request.
The [Rust code of conduct] applies.
## License
Licensed under either of
- Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or <http://www.apache.org/licenses/LICENSE-2.0>)
- MIT license ([LICENSE-MIT](LICENSE-MIT) or <http://opensource.org/licenses/MIT>)
at your option.
[Rust code of conduct]: https://www.rust-lang.org/policies/code-of-conduct
[Vello]: https://github.com/linebender/vello
[the changelog]: https://github.com/linebender/vello/tree/main/CHANGELOG.md