140264 2015-01-08 13:36:50 -0800 [iOS][WK2] Push content bounds on layer tree commit to prevent drawing stale fixed position rects 2015-01-12 16:30:50 -0800 1 1 1 Unclassified WebKit WebKit2 528+ (Nightly build) Unspecified Unspecified RESOLVED FIXED P2 Normal --- 1 mhock mhock benjamin oldest_to_newest 1059938 0 mhock 2015-01-08 13:36:50 -0800 [iOS][WK2] Push content bounds on layer tree commit to prevent drawing stale fixed position rects 1059939 1 244290 mhock 2015-01-08 13:40:50 -0800 Created attachment 244290 patch 1059944 2 244290 benjamin 2015-01-08 13:59:39 -0800 Comment on attachment 244290 patch View in context: https://bugs.webkit.org/attachment.cgi?id=244290&action=review > Source/WebKit2/ChangeLog:8 > + You should give the complete explanation of what is going wrong in the buggy case. This is a tricky bug. At some point in the future, someone will wonder why we are pushing a VisibleContentRect updates on LayerTree commit. She/he should be able to get back this changelog and fully understand the problem. 1060715 3 mhock 2015-01-12 16:30:50 -0800 Committed r178307: <http://trac.webkit.org/changeset/178307> 244290 2015-01-08 13:40:50 -0800 2015-01-08 13:59:39 -0800 patch pushbounds.01.diff text/plain 1487 mhock ZGlmZiAtLWdpdCBhL1NvdXJjZS9XZWJLaXQyL0NoYW5nZUxvZyBiL1NvdXJjZS9XZWJLaXQyL0No YW5nZUxvZwppbmRleCBmNzI5NTM2Li45YmU2YWIxIDEwMDY0NAotLS0gYS9Tb3VyY2UvV2ViS2l0 Mi9DaGFuZ2VMb2cKKysrIGIvU291cmNlL1dlYktpdDIvQ2hhbmdlTG9nCkBAIC0xLDMgKzEsMTQg QEAKKzIwMTUtMDEtMDggIE1hcnRpbiBIb2NrICA8bWhvY2tAYXBwbGUuY29tPgorCisgICAgICAg IFtpT1NdW1dLMl0gUHVzaCBjb250ZW50IGJvdW5kcyBvbiBsYXllciB0cmVlIGNvbW1pdCB0byBw cmV2ZW50IGRyYXdpbmcgc3RhbGUgZml4ZWQgcG9zaXRpb24gcmVjdHMKKyAgICAgICAgaHR0cHM6 Ly9idWdzLndlYmtpdC5vcmcvc2hvd19idWcuY2dpP2lkPTE0MDI2NAorICAgICAgICA8cmRhcjov L3Byb2JsZW0vMTg4NzM1NDU+CisKKyAgICAgICAgUmV2aWV3ZWQgYnkgTk9CT0RZIChPT1BTISku CisKKyAgICAgICAgKiBVSVByb2Nlc3MvaW9zL1dLQ29udGVudFZpZXcubW06CisgICAgICAgICgt W1dLQ29udGVudFZpZXcgX2RpZENvbW1pdExheWVyVHJlZTpdKTogUHVzaCBuZXcgY29udGVudCBi b3VuZHMgdG8gdGhlIHdlYiBwcm9jZXNzLgorCiAyMDE1LTAxLTA4ICBEZWFuIEphY2tzb24gIDxk aW5vQGFwcGxlLmNvbT4KIAogICAgICAgICBUZXh0IG5vdCBkcmF3biBvciB3aGl0ZS1vbi13aGl0 ZSBmb3IgIkNsb3NlIFBhZ2UiLyJHbyBCYWNrIiBidXR0b24gb24gc2FmZSBicm93c2luZyB3YXJu aW5nIHBhZ2UKZGlmZiAtLWdpdCBhL1NvdXJjZS9XZWJLaXQyL1VJUHJvY2Vzcy9pb3MvV0tDb250 ZW50Vmlldy5tbSBiL1NvdXJjZS9XZWJLaXQyL1VJUHJvY2Vzcy9pb3MvV0tDb250ZW50Vmlldy5t bQppbmRleCBmMGYwYjExLi4wOTY5MmIzIDEwMDY0NAotLS0gYS9Tb3VyY2UvV2ViS2l0Mi9VSVBy b2Nlc3MvaW9zL1dLQ29udGVudFZpZXcubW0KKysrIGIvU291cmNlL1dlYktpdDIvVUlQcm9jZXNz L2lvcy9XS0NvbnRlbnRWaWV3Lm1tCkBAIC00NjEsNiArNDYxLDkgQEAgcHJpdmF0ZToKICAgICBp ZiAoYm91bmRzQ2hhbmdlZCkgewogICAgICAgICBGbG9hdFJlY3QgZml4ZWRQb3NpdGlvblJlY3Qg PSBfcGFnZS0+Y29tcHV0ZUN1c3RvbUZpeGVkUG9zaXRpb25SZWN0KF9wYWdlLT51bm9ic2N1cmVk Q29udGVudFJlY3QoKSwgW1tfd2ViVmlldyBzY3JvbGxWaWV3XSB6b29tU2NhbGVdKTsKICAgICAg ICAgW3NlbGYgdXBkYXRlRml4ZWRDbGlwcGluZ1ZpZXc6Zml4ZWRQb3NpdGlvblJlY3RdOworCisg ICAgICAgIC8vIFdlIG5lZWQgdG8gcHVzaCB0aGUgbmV3IGNvbnRlbnQgYm91bmRzIHRvIHRoZSB3 ZWIgcHJvY2VzcyBvciBzdGFsZSBmaXhlZCBwb3NpdGlvbiByZWN0cyBtYXkgZHJhdyBpbmNvcnJl Y3RseSBvbiB2aWV3IHJlc2l6ZS4KKyAgICAgICAgW193ZWJWaWV3IF91cGRhdGVWaXNpYmxlQ29u dGVudFJlY3RzXTsKICAgICB9CiAgICAgCiAgICAgW3NlbGYgX3VwZGF0ZUNoYW5nZWRTZWxlY3Rp b25dOwo=