The Vello project is a set of high-performance vector renderers written in Rust:
- Vello is an experimental renderer with a focus on doing as much work as possible with GPU compute.
- Vello CPU is a pure Rust, CPU-only renderer optimized for multithreading and SIMD.
- Vello Hybrid is a renderer that does heavy pre-processing on the CPU but still does most of the work on the GPU. It aims to be the main Vello implementation for production use-cases.
Quickstart to run an example program:
cargo run -p with_winit
Significant changes are documented in the changelog.
Vello is meant to fill the same place in the graphics stack as other vector graphics renderers like Skia, Cairo, and its predecessor project Piet.
On a basic level, that means it provides tools to render shapes, images, gradients, text, etc, using a PostScript-inspired API, the same that powers SVG files and the browser <canvas> element.
The selling point of Vello's implementations is that they get better performance than other renderers by better leveraging the SIMD, multithreading and the GPU.
This version of Vello has been verified to compile with Rust 1.89 and later.
Future versions of Vello 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.
Click here if compiling fails.
As time has passed, some of Vello'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.
# Use the problematic dependency's name and version
cargo update -p package_name --precise 0.1.1Discussion of Vello development happens in the Linebender Zulip, specifically the #vello channel. All public content can be read without logging in.
Contributions are welcome by pull request. The Rust code of conduct applies.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache 2.0 license, shall be licensed as noted in the License section, without any additional terms or conditions.
Licensed under either of
- Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
at your option.
In addition, all files in the vello_shaders/shader and vello_shaders/src/cpu directories and subdirectories thereof are alternatively licensed under the Unlicense (vello_shaders/shader/UNLICENSE or http://unlicense.org/).
For clarity, these files are also licensed under either of the above licenses.
The intent is for this research to be used in as broad a context as possible.
The files in subdirectories of the examples/assets directory are licensed solely under their respective licenses, available in the LICENSE file in their directories.
