[Impeller] match sigma scaling to Skia scaling. #48434
Merged
Conversation
This file contains 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
|
From some napkin math, on the wonderous app the current scale down was going down to a sigma of ~2, where the Skia scaling curve never scales below 4. |
gaaclarke
approved these changes
Nov 28, 2023
impeller/entity/contents/filters/gaussian_blur_filter_contents.cc
Outdated
Show resolved
Hide resolved
impeller/entity/contents/filters/gaussian_blur_filter_contents.h
Outdated
Show resolved
Hide resolved
Co-authored-by: gaaclarke <30870216+gaaclarke@users.noreply.github.com>
|
I think that we could further adjust the scale down - we just need to do so in a way that keeps the sigma from getting smaller than 4-ish, because that is when things start getting jittery. |
jonahwilliams
added
the
autosubmit
engine-flutter-autoroll
added a commit
to engine-flutter-autoroll/flutter
that referenced
this pull request
Nov 28, 2023
auto-submit bot
pushed a commit
to flutter/flutter
that referenced
this pull request
Nov 28, 2023
…139168) flutter/engine@fd3a33f...97ede15 2023-11-28 jonahwilliams@google.com [Impeller] Skip mask blur with 0 sigma. (flutter/engine#48457) 2023-11-28 jonahwilliams@google.com [Impeller] match sigma scaling to Skia scaling. (flutter/engine#48434) If this roll has caused a breakage, revert this CL and stop the roller using the controls here: https://autoroll.skia.org/r/flutter-engine-flutter-autoroll Please CC matanl@google.com,rmistry@google.com,zra@google.com on the revert to ensure that a human is aware of the problem. To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose To report a problem with the AutoRoller itself, please file a bug: https://issues.skia.org/issues/new?component=1389291&template=1850622 Documentation for the AutoRoller is here: https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md
caseycrogers
pushed a commit
to caseycrogers/flutter
that referenced
this pull request
Dec 29, 2023
…lutter#139168) flutter/engine@fd3a33f...97ede15 2023-11-28 jonahwilliams@google.com [Impeller] Skip mask blur with 0 sigma. (flutter/engine#48457) 2023-11-28 jonahwilliams@google.com [Impeller] match sigma scaling to Skia scaling. (flutter/engine#48434) If this roll has caused a breakage, revert this CL and stop the roller using the controls here: https://autoroll.skia.org/r/flutter-engine-flutter-autoroll Please CC matanl@google.com,rmistry@google.com,zra@google.com on the revert to ensure that a human is aware of the problem. To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose To report a problem with the AutoRoller itself, please file a bug: https://issues.skia.org/issues/new?component=1389291&template=1850622 Documentation for the AutoRoller is here: https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
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.
The Impeller blur is scaling down about twice as fast as the Skia Blur. Instead adopt their approximate constant values, which results in less shaking as the blur gets bigger.
FYI @gaaclarke