[webkit-reviews] review requested: [Bug 76838] [chromium] Cull occluded tiles during paint : [Attachment 125006] Patch

[bugzilla-daemon at webkit.org]

Dana Jansens <danakj at chromium.org> has asked  for review:
Bug 76838: [chromium] Cull occluded tiles during paint
https://bugs.webkit.org/show_bug.cgi?id=76838

Attachment 125006: Patch
https://bugs.webkit.org/attachment.cgi?id=125006&action=review

------- Additional Comments from Dana Jansens <danakj at chromium.org>
- using Region::contains() since that landed finally
- cull tiles if their visible part is occluded (was previously testing if
non-visible parts were occluded too)
- added unit tests for the missed visibility interaction