Bug 197768 - Layer bounds are incorrect for sharing layers that paint with transforms
Summary: Layer bounds are incorrect for sharing layers that paint with transforms
Alias: None
Product: WebKit
Classification: Unclassified
Component: Compositing (show other bugs)
Version: WebKit Nightly Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Simon Fraser (smfr)
Keywords: InRadar
Depends on:
Blocks: 197561
  Show dependency treegraph
Reported: 2019-05-09 22:19 PDT by Simon Fraser (smfr)
Modified: 2019-05-11 15:22 PDT (History)
4 users (show)

See Also:

Testcase (792 bytes, text/html)
2019-05-09 22:19 PDT, Simon Fraser (smfr)
no flags Details
Patch (15.19 KB, patch)
2019-05-11 11:11 PDT, Simon Fraser (smfr)
no flags Details | Formatted Diff | Diff

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Description Simon Fraser (smfr) 2019-05-09 22:19:53 PDT
Created attachment 369545 [details]

Attached testcase (with layer borders on) show that we make backing that is much too big when the shared layer has a transform.

We need to do the right transform math when computing composited bounds.
Comment 1 Simon Fraser (smfr) 2019-05-10 22:08:33 PDT
We're getting localClipRect and transforming it, which seems wrong.
Comment 2 Radar WebKit Bug Importer 2019-05-11 11:09:52 PDT
Comment 3 Simon Fraser (smfr) 2019-05-11 11:11:03 PDT
Created attachment 369654 [details]
Comment 4 WebKit Commit Bot 2019-05-11 15:22:41 PDT
Comment on attachment 369654 [details]

Clearing flags on attachment: 369654

Committed r245208: <https://trac.webkit.org/changeset/245208>
Comment 5 WebKit Commit Bot 2019-05-11 15:22:42 PDT
All reviewed patches have been landed.  Closing bug.