d292152e2e
This change introduces Skia painter available under a flag. It's not yet match capabilities of Gfx::Painter and is not ready to replace it. Motivation: - The current CPU painter is a performance bottleneck on most websites. Our own GPU painter implementation is very immature and has received relatively little attention. - There is ongoing effort on building painter that supports affine transforms (AffineCommandExecutorCPU) but it is far from being on par with the default CPU painter. Skia will allow us to immediately get full transformation support for all painting commands. GPU painting: I experimented with Ganesh GPU-backend, however profiling revealed that without sharing viewport texture between WebContent and Browser processes, it won't bring much performance improvement compared to CPU-backend. Therefore, I decided to keep this PR focused on implementing most of painting commands and switch to GPU-backend in future changes. Text rendring: Skia painter uses glyph bitmaps produced by LibGfx. Using Skia for text rendering will require large refactoring of the font rendering subsystem. Currently, it's impossible to construct SkFont right before rendering because Gfx::VectorFont can't be serialized back into sequence of bytes. There is a problem with ugly include paths like: `#include <core/SkBitmap.h>`. I would prefer to have skia prefix in the path. There was an attempt to fix that but PR was rejected https://github.com/microsoft/vcpkg/pull/32660 Regressions compared to Gfx::Painter: - DrawText is not implemented - PaintTextShadow is not implemented - PaintRadialGradient and PaintLinearGradient do not support "transition hints" and repeat length - PaintConicGradient is not implemented - DrawTriangleWave is not implemented - DrawLine does not account for line style property - DrawScaledBitmap and DrawScaledImmutableBitmap do not account for scaling mode property
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, LibLocale: Unicode and locale support
- LibAudio, LibVideo: 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.
A general guide for contributing can be found in CONTRIBUTING.md.
License
Ladybird is licensed under a 2-clause BSD license.