google/skia
Skia
Skia is a high-performance 2D graphics rendering library used for drawing text, geometries, and images on digital surfaces. It functions as a hardware-accelerated graphics engine that offloads drawing operations to the GPU, a vector graphics processor for SVG and complex paths, and a typography engine for shaping and drawing characters with Unicode support.
The project provides a cross-platform image codec for encoding and decoding standard image formats into raw pixel data across multiple operating systems. It also enables the development of user interfaces that maintain visual consistency across different mobile and desktop platforms.
The library includes capabilities for color space management, scanline-based rasterization, and resource-cached memory management. It integrates external logic through a foreign function interface for Rust library integration and employs automated mutation and fuzz testing to ensure the stability of its graphics APIs.
A dedicated build toolchain is provided to compile the library for multiple operating systems and mobile platforms.
Features
- 2D Rendering Engines - Provides a high-performance 2D rendering engine optimized for drawing text, geometries, and images using hardware acceleration.
- Text Shaping Engines - Processes raw character strings into positioned glyphs using layout engines to ensure correct typography and spacing.
- 2D Graphics Frameworks - Offers a comprehensive framework for rendering essential 2D primitives including shapes, text, and images.
- SVG-Based Vector Rendering - Includes a system for parsing and rendering SVG files and complex vector paths.
- Hardware-Accelerated Rendering - Implements rendering processes that offload drawing operations to the GPU for significant performance improvements.
- Vector Geometry Pipelines - Implements high-performance pipelines for processing mathematical paths into resolution-independent shapes.
- Vector Graphics Renderers - Provides a system for rendering complex vector graphics and SVG files with precise visual output.
- Vector Rasterizers - Provides a scanline-based rasterizer to convert vector geometries into pixel grids.
- Text Rendering - Provides a sophisticated system for shaping and drawing Unicode text on a canvas with full styling support.
- Image Format Encoding - Provides capabilities for compressing and saving graphical data into standardized raster image file formats.
- Image Format Decoders - Includes decoders that extract raw pixel data from standard image formats for rendering.
- Text Shaping and Layout - Provides a typography engine for shaping and drawing characters with comprehensive Unicode support.
- GPU Acceleration - Increases rendering speed by offloading compute-intensive drawing tasks to the GPU.
- GPU-Accelerated UI Rendering - Offloads 2D drawing commands to GPU hardware APIs to increase rendering speed and reduce CPU load.
- Cross-Platform GUI Toolkits - Enables the creation of user interfaces that maintain visual consistency across multiple operating systems and mobile platforms.
- Asset Caches - Implements a specialized in-memory cache for graphical assets with time-based purging to manage memory.
- Handle-Based Lookups - Uses lightweight identifiers to avoid repeated expensive lookups in large typeface tables when retrieving font metrics.
- Canvas Text Layout Engines - Implements a layout engine to determine text positions and line breaks for high-performance rendering.
- Multi-Format Codecs - Employs a modular, pluggable system for encoding and decoding a wide array of standard image formats.
- Color Management Systems - Implements a system for converting colors between different spaces to maintain visual consistency across display hardware.
- Font Metric Querying - Retrieves character advances and boundaries using lightweight handles to reduce expensive font lookup overhead.
- Graphics and Rendering - 2D graphics library for drawing text and images.
- Graphics Libraries - 2D graphics library with Vulkan backend.
- Graphics and Rendering - 2D graphics library for drawing text and shapes.
- Graphics Rendering - Complete 2D graphics library for text and geometry.
