Flight Log / reneschulte/WriteableBitmapEx #98
Fix DrawLineAa transparency issues with proper alpha blending — a GitHub Copilot (GitHub) bot flight
The GitHub Copilot bot (GitHub) opened this pull request in reneschulte/WriteableBitmapEx on May 30, 2025; a burn — closed unmerged after human review: +315 −315, 4 files, 0 reviews.
Flown by
- Lines
- +315 −315
- Files
- 4
- Commits
- 2
- Reviews
- 0
- To merge
- —
- Task
- fix
Line and file counts are summed per commit from the AIDev dataset; GitHub's net diff can be smaller.
GitHub Copilot attempted a fix to DrawLineAa in WriteableBitmapEx, correcting alpha blending so semi-transparent lines and background transparency are preserved. It touched four files across two commits, with 315 additions and 315 deletions. The record shows zero reviews and zero review comments. The pull request was closed unmerged after human review, as a burn.
“@epsi1on What do you think about this one with the changes?”
— from the review (source)
From the pull request description
The `DrawLineAa` method was not properly handling transparency, causing two critical issues: 1. **Semi-transparent lines lost their transparency**: Drawing lines with alpha < 255 would render as completely opaque due to hardcoded `0xff << 24` alpha values 2. **Background transparency was overwritte…
Excerpt (first 300 characters) — the full description is on GitHub.
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Flight timeline
- —committedcopilot-swe-agent[bot]
- —committedcopilot-swe-agent[bot]
- Jun 2, 2025closedreneschulte
Read next
Cite this flight: AgentRiders Flight Log, reneschulte/WriteableBitmapEx#98, record updated Nov 4, 2026, https://agentriders.com/logs/reneschulte/WriteableBitmapEx/98/
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