anomalyco / anomalyco/opencode
[Desktop] Text shimmer repaints every frame; propose an opacity pulse (design review)
@Hona is already working on this.
Since Sep 12, 2026.
- Dominant language
- TypeScript
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Description
Description
The "working" shimmer (Thinking, running tool titles) animates background-position on text that has two gradient layers and background-clip: text. That repaints the text every frame for as long as the state is active.
Measured in a real desktop instance (1.18.29, via CDP), 3s windows, 2 visible shimmers:
| variant | RecalcStyleDuration | TaskDuration |
|---|---|---|
| animating | ~30ms | ~330–450ms |
frozen (animation: none) |
0ms | ~51–56ms |
No dropped frames in this test (100fps steady), but the animation spends CPU continuously while an agent is working.
Proposal: replace the sweep with an opacity pulse on the overlay copy (compositor-friendly). Same "working" cue, no per-frame background paint. This is a visual change, so it's being opened as a proposal for design review.
Plugins
none
OpenCode version
OpenCode Desktop 1.18.29
Steps to reproduce
- Open a session and run a turn
- Watch the shimmer on the thinking/tool titles (or profile with DevTools Performance)
- Layout/paint runs every frame while the state is active
Screenshot and/or share link
See image above.
Operating System
CachyOS (Arch Linux), KDE Plasma 6.7.5, Wayland
Terminal
n/a (desktop app)
Contributor guide
First steps
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Assessment
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