83190 2012-04-04 12:21:36 -0700 Shadows clipped on position:fixed composited layers 2012-04-20 11:58:29 -0700 1 1 1 Unclassified WebKit Layout and Rendering 528+ (Nightly build) Unspecified Unspecified RESOLVED DUPLICATE 63331 InRadar P2 Normal --- 1 vangelis dino enne jamesr jchaffraix simon.fraser webkit-bug-importer oldest_to_newest 595794 0 vangelis 2012-04-04 12:21:36 -0700 This bug was originally reported in: http://code.google.com/p/chromium/issues/detail?id=121102 Composited layers seem to clip out shadow region corresponding to a -webkit-box-shadow property. Steps to reproduce: (WebKit in 10.7 with accelerated canvas or Chrome) 1. Open http://www.tsetmc.com/Loader.aspx?ParTree=151311&i=23441366113375722 2. Click 's' to open the popup div with the box shadow 3. Resize the main window until the popup overlaps the graph at the top left At that point, the popup gets promoted to a composited layer and loses it shadow (and a chunk of its border). The composited layer borders reveal that the layer created is really too small. An alternative way to trigger the bug on the same page is to simply add a -webkit-transform: translateZ(0) on the popup div's content. 595825 1 simon.fraser 2012-04-04 13:04:03 -0700 When did this regress? r111456? 595839 2 vangelis 2012-04-04 13:15:33 -0700 (In reply to comment #1) > When did this regress? r111456? I'm not sure it's a regression, and if it is, it's probably not very recent. I see the same behavior in (official) Safari 5.1.3 (7534.53.10) . 597831 3 simon.fraser 2012-04-06 17:11:12 -0700 *** Bug 83381 has been marked as a duplicate of this bug. *** 597832 4 simon.fraser 2012-04-06 17:12:16 -0700 This needs to be looked soon. 597833 5 webkit-bug-importer 2012-04-06 17:12:37 -0700 <rdar://problem/11204762> 606421 6 138056 dino 2012-04-20 00:41:06 -0700 Created attachment 138056 Reduced test case Here's a pretty simple reduction. Edit the marked point in the file to toggle the correct and incorrect results. 606577 7 simon.fraser 2012-04-20 08:04:32 -0700 We're probably using the wrong clip rect for position:fixed things. Does it only repro with position:fixed? 606647 8 138107 dino 2012-04-20 09:41:22 -0700 Created attachment 138107 Updated reduction 606652 9 simon.fraser 2012-04-20 09:52:06 -0700 I think this is a dup of bug 63331 606774 10 dino 2012-04-20 11:58:29 -0700 *** This bug has been marked as a duplicate of bug 63331 *** 138056 2012-04-20 00:41:06 -0700 2012-04-20 09:41:22 -0700 Reduced test case 83190-reduction.html text/html 643 dino PHN0eWxlPgouc2hhcmVkIHsKICAvKiBjaGFuZ2UgdGhlc2UgdHdvIHZhbHVlcyB0byBzb21ldGhp bmcgPiAxNTAgdG8gc2VlIGNvcnJlY3QgcmVzdWx0ICovCiAgdG9wOiA2MHB4OwogIGxlZnQ6IDYw cHg7Cn0KCi5vdXRlciB7CiAgb3ZlcmZsb3c6IGF1dG87CiAgei1pbmRleDogMTsKICBwb3NpdGlv bjogZml4ZWQ7CiAgd2lkdGg6IDMwMHB4OwogIGhlaWdodDogMTAwcHg7Cn0KCi5pbm5lciB7CiAg YmFja2dyb3VuZC1jb2xvcjogd2hpdGU7CiAgYm9yZGVyOiAyMHB4IHNvbGlkIHJlZDsKICBwb3Np dGlvbjogZml4ZWQ7CiAgd2lkdGg6IDQwMHB4OwogIGhlaWdodDogMzAwcHg7Cn0KCi5jb21wb3Np dGUgewogIHBvc2l0aW9uOiBhYnNvbHV0ZTsKICB0b3A6IDEwcHg7CiAgbGVmdDogMTBweDsKICB3 aWR0aDogMTAwcHg7CiAgaGVpZ2h0OiAxMDBweDsKICBiYWNrZ3JvdW5kOiBibHVlOwogIC13ZWJr aXQtdHJhbnNmb3JtOiB0cmFuc2xhdGVaKDApOwp9Cjwvc3R5bGU+CjxkaXYgY2xhc3M9ImNvbXBv c2l0ZSI+PC9kaXY+Cgo8ZGl2IGNsYXNzPSJvdXRlciBzaGFyZWQiPgogIDxkaXYgY2xhc3M9Imlu bmVyIHNoYXJlZCI+c2hvdWxkIHNlZSBhbGwgdGhlIHRleHQgYW5kIGZvdXIgc2lkZXMgb2YgYm9y ZGVyPC9kaXY+CjwvZGl2Pg== 138107 2012-04-20 09:41:22 -0700 2012-04-20 09:41:22 -0700 Updated reduction 83190-reduction.html text/html 705 dino PHN0eWxlPgouc2hhcmVkIHsKICAvKiBjaGFuZ2UgdGhlc2UgdHdvIHZhbHVlcyB0byBzb21ldGhp bmcgPiAxNTAgdG8gc2VlIGNvcnJlY3QgcmVzdWx0ICovCiAgdG9wOiA2MHB4OwogIGxlZnQ6IDYw cHg7Cn0KCi5vdXRlciB7CiAgb3ZlcmZsb3c6IGhpZGRlbjsKICB6LWluZGV4OiAxOwogIHBvc2l0 aW9uOiBmaXhlZDsKICB3aWR0aDogMzAwcHg7CiAgaGVpZ2h0OiAxMDBweDsKICBib3JkZXI6IDEw cHggc29saWQgZ3JlZW47Cn0KCi5pbm5lciB7CiAgYmFja2dyb3VuZC1jb2xvcjogd2hpdGU7CiAg Ym9yZGVyOiAxMHB4IHNvbGlkIHJlZDsKICBwb3NpdGlvbjogZml4ZWQ7CiAgd2lkdGg6IDQwMHB4 OwogIGhlaWdodDogMzAwcHg7CiAgdG9wOiAxMDBweDsKICBsZWZ0OiAxMDBweDsKfQoKLmNvbXBv c2l0ZSB7CiAgcG9zaXRpb246IGFic29sdXRlOwogIHRvcDogMTBweDsKICBsZWZ0OiAxMHB4Owog IHdpZHRoOiAxMDBweDsKICBoZWlnaHQ6IDEwMHB4OwogIGJhY2tncm91bmQ6ICNhYWFhZmY7CiAg LXdlYmtpdC10cmFuc2Zvcm06IHRyYW5zbGF0ZVooMCk7Cn0KPC9zdHlsZT4KPGRpdiBjbGFzcz0i Y29tcG9zaXRlIj48L2Rpdj4KCjxkaXYgY2xhc3M9Im91dGVyIHNoYXJlZCI+CiAgPGRpdiBjbGFz cz0iaW5uZXIgc2hhcmVkIj5zaG91bGQgc2VlIGFsbCB0aGUgdGV4dCBhbmQgZm91ciBzaWRlcyBv ZiBib3JkZXI8L2Rpdj4KPC9kaXY+