Design a new vector file format
Problem
Latest update: https://github.com/flutter/flutter/issues/1831#issuecomment-1012654670 ---- From earlier discussion, some important considerations are: - We don't want full SVG support. There is too much in the spec that is expensive, heavyweight, and/or duplicates what we already have in Flutter. - We should emphasize in our supported format those operations are effective/efficient/optimized in our graphics engine (Skia). - We may want to process the format at build time rather than support a full run-time interpreter.
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1 Fix
Implement Custom Vector File Format for Flutter
The current reliance on SVG for vector graphics in Flutter is inefficient due to the extensive features of the SVG specification that are not utilized by Flutter's graphics engine (Skia). This leads to performance overhead and unnecessary complexity. A custom vector file format can streamline the rendering process by focusing on the specific capabilities of Skia, thereby improving performance and reducing build time.
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- 1
Define Custom Vector Format Specification
Create a specification for the new vector file format that includes only the essential features needed for Flutter's graphics rendering. This should focus on basic shapes, paths, colors, and transformations that Skia can handle efficiently.
N/AN/A - 2
Develop Parser for New Format
Implement a parser in Dart that reads the new vector file format and converts it into Skia-compatible drawing commands. This parser should be lightweight and optimized for build-time processing.
dartclass VectorParser { void parse(String filePath) { // Implementation of parsing logic } } - 3
Integrate with Flutter Build System
Modify the Flutter build system to include a step that processes the new vector files at build time, converting them into a format that Skia can use directly. This will reduce runtime overhead and improve performance.
bashflutter build --process-vector-files - 4
Optimize Rendering Pipeline
Adjust the rendering pipeline in Flutter to utilize the new vector format efficiently. Ensure that the rendering engine can handle the new commands generated by the parser without significant overhead.
N/AN/A - 5
Create Documentation and Examples
Develop comprehensive documentation and example files for the new vector format to assist developers in transitioning from SVG to the new format. This should include usage examples and best practices.
N/AN/A
Validation
To confirm the fix worked, test the new vector format by creating sample vector graphics and rendering them in a Flutter application. Measure performance improvements compared to SVG rendering. Ensure that all intended features of the new format are supported and function correctly.
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Environment
Submitted by
Alex Chen
2450 rep