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We use instances of `Gfx::Bitmap` to move pixel data all the way from raw image bytes up to the Skia renderer. A vital piece of information for correct blending of bitmaps is the alpha type, i.e. are we dealing with premultiplied or unpremultiplied color values? Premultiplied means that the RGB colors have been multiplied with the associated alpha value, i.e. RGB(255, 255, 255) with an alpha of 2% is stored as RGBA(5, 5, 5, 2%). Unpremultiplied means that the original RGB colors are stored, regardless of the alpha value. I.e. RGB(255, 255, 255) with an alpha of 2% is stored as RGBA(255, 255, 255, 2%). It is important to know how the color data is stored in a `Gfx::Bitmap`, because correct blending depends on knowing the alpha type: premultiplied blending uses `S + (1 - A) * D`, while unpremultiplied blending uses `A * S + (1 - A) * D`. This adds the alpha type information to `Gfx::Bitmap` across the board. It isn't used anywhere yet.
Ladybird
Ladybird is a truly independent web browser, using a novel engine based on web standards.
Important
Ladybird is in a pre-alpha state, and only suitable for use by developers
Features
We aim to build a complete, usable browser for the modern web.
Ladybird uses a multi-process architecture with a main UI process, several WebContent renderer processes, an ImageDecoder process, and a RequestServer process.
Image decoding and network connections are done out of process to be more robust against malicious content. Each tab has its own renderer process, which is sandboxed from the rest of the system.
At the moment, many core library support components are inherited from SerenityOS:
- LibWeb: Web rendering engine
- LibJS: JavaScript engine
- LibWasm: WebAssembly implementation
- LibCrypto/LibTLS: Cryptography primitives and Transport Layer Security
- LibHTTP: HTTP/1.1 client
- LibGfx: 2D Graphics Library, Image Decoding and Rendering
- LibArchive: Archive file format support
- LibUnicode: Unicode and locale support
- LibAudio, LibMedia: Audio and video playback
- LibCore: Event loop, OS abstraction layer
- LibIPC: Inter-process communication
How do I build and run this?
See build instructions for information on how to build Ladybird.
Ladybird runs on Linux, macOS, Windows (with WSL2), and many other *Nixes.
How do I read the documentation?
Code-related documentation can be found in the documentation folder.
Get in touch and participate!
Join our Discord server to participate in development discussion.
Before opening an issue, please see the issue policy and the detailed issue-reporting guidelines.
A general guide for contributing can be found in CONTRIBUTING.md.
License
Ladybird is licensed under a 2-clause BSD license.