perf(replay): Use RGB_565 when alpha is unnecessary - #5821
Draft
romtsn wants to merge 4 commits into
Draft
Conversation
Contributor
Instructions and example for changelogPlease add an entry to Example: ## Unreleased
### Performance
- Use RGB_565 when alpha is unnecessary ([#5821](https://github.com/getsentry/sentry-java/pull/5821))If none of the above apply, you can opt out of this check by adding |
📲 Install BuildsAndroid
|
Contributor
Performance metrics 🚀
|
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| 6b019b7 | 343.31 ms | 417.23 ms | 73.91 ms |
| d15471f | 342.08 ms | 415.44 ms | 73.35 ms |
| 8687935 | 332.52 ms | 362.23 ms | 29.71 ms |
| 5b1a06b | 352.27 ms | 413.70 ms | 61.43 ms |
| 91bb874 | 314.47 ms | 440.00 ms | 125.53 ms |
| 0ee65e9 | 321.06 ms | 361.24 ms | 40.18 ms |
| e63ad34 | 323.67 ms | 390.33 ms | 66.67 ms |
| 33a08cc | 267.08 ms | 340.45 ms | 73.37 ms |
| 27d7cf8 | 397.90 ms | 498.65 ms | 100.75 ms |
| ee747ae | 405.43 ms | 485.70 ms | 80.28 ms |
App size
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| 6b019b7 | 0 B | 0 B | 0 B |
| d15471f | 1.58 MiB | 2.13 MiB | 559.54 KiB |
| 8687935 | 1.58 MiB | 2.19 MiB | 619.17 KiB |
| 5b1a06b | 0 B | 0 B | 0 B |
| 91bb874 | 1.58 MiB | 2.13 MiB | 559.07 KiB |
| 0ee65e9 | 0 B | 0 B | 0 B |
| e63ad34 | 0 B | 0 B | 0 B |
| 33a08cc | 1.58 MiB | 2.12 MiB | 555.28 KiB |
| 27d7cf8 | 1.58 MiB | 2.12 MiB | 549.42 KiB |
| ee747ae | 1.58 MiB | 2.10 MiB | 530.95 KiB |
romtsn
force-pushed
the
rz/fix/pixelcopy-frame-race
branch
2 times, most recently
from
July 24, 2026 15:16
fb275d7 to
63eb6f1
Compare
Keep PixelCopy, masking, compositing, and cleanup from accessing the shared bitmap concurrently. Fixes GH-5340 Co-Authored-By: Codex <noreply@openai.com>
Re-arm the recorder's content-change gate when a capture is skipped because another frame is still in flight. This ensures the latest UI state is retried on the next capture interval. Refs GH-5340 Co-Authored-By: OpenAI Codex <noreply@openai.com>
Reduce replay screenshot memory while retaining ARGB_8888 for SurfaceView compositing. Refs GH-5340 Co-Authored-By: Codex <noreply@openai.com>
Screen content is always opaque so the alpha channel in ARGB_8888 is wasted. RGB_565 halves the per-screenshot bitmap memory (~2B/px vs 4B/px). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
romtsn
force-pushed
the
rz/perf/use-rgb565-for-replay
branch
from
July 30, 2026 10:00
8125299 to
f7c7bc0
Compare
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
📜 Description
Use
RGB_565for replay recording bitmaps when alpha is unnecessary. PixelCopy keepsARGB_8888when SurfaceView capture is enabled because compositing depends on the transparentholes left in the Window capture. Canvas capture always uses
RGB_565because it does not supportSurfaceView compositing.
This PR depends on #5808.
💡 Motivation and Context
RGB_565halves the recording bitmap's memory footprint. The previous switch toARGB_8888wasbased on an unconfirmed theory about native bitmap crashes; #5808 instead addresses the concurrent
PixelCopy access and recycling that can produce those crashes.
Refs #5340
💚 How did you test it?
./gradlew ':sentry-android-replay:testDebugUnitTest' --tests='*PixelCopyStrategyTest*' --info./gradlew spotlessApply apiDumpAdded assertions that regular PixelCopy capture uses
RGB_565and SurfaceView capture retainsARGB_8888.📝 Checklist
sendDefaultPIIis enabled.🔮 Next steps
None.