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# Vello Sparse Shaders
[](#license)
\
[](https://xi.zulipchat.com/#narrow/channel/197075-vello)
[](https://github.com/linebender/vello/actions)
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This crate contains the WGSL programs and optionally generated GLSL shader programs used by the
Vello Hybrid renderer.
## Features
- Single source of truth authored WGSL programs.
- Automated build step for compiling GLSL shaders using [naga](https://github.com/gfx-rs/wgpu/tree/trunk/naga).
## Usage
This crate provides the WGSL programs and build step for GLSL programs that are used by the
optimized hybrid rendering engine.
## Minimum supported Rust Version (MSRV)
This version of Vello Hybrid Shaders has been verified to compile with **Rust 1.88** and later.
Future versions of Vello Hybrid 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 Hybrid'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 Hybrid 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