Add a route to apply filters to existing `Pixmap`
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- Dominant language
- Rust
- Stars
- 4.1k
- Forks
- 348
- Avg merge
- 1d 14h
- Merged PRs (30d)
- 3
Description
In Takumi, when we tries to rasterize filters on a pixmap, we need to go through extra unpremultiply -> encode png -> resvg decodes png -> premultiply which is very inefficient.
Source: https://github.com/kane50613/takumi/blob/9eb4a7521bbca03f1812e6446cdb0f05341e2fee/takumi-core/src/resources/image.rs#L723
I'm willing to contribute to it if needed.
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the referenced takumi-core/src/resources/image.rs line 723 and trace how filters are currently rasterized through resvg. Then inspect resvg's existing Pixmap and filter entry points to determine the appropriate direct route and its expected behavior. Done means the route is specified clearly and covered by tests showing filters can be applied without the PNG round trip.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- computer-graphics
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Needs clarification
- Newbie friendliness
- 45/100