197141 2019-04-20 10:24:50 -0700 [GTK] webview remains blank on x86 if hardware acceleration policy is "always" 2024-01-28 23:21:52 -0800 1 1 1 Unclassified WebKit WebKitGTK Other PC Linux NEW Gtk P3 Major --- 1 sgerwk webkit-unassigned awkravchuk bugs-noreply cgarcia magomez mcatanzaro zan oldest_to_newest 1529087 0 367892 sgerwk 2019-04-20 10:24:50 -0700 Created attachment 367892 testing program On an x86 PC, the webview widget remains blank (all white) if the hardware acceleration policy is "always", but shows the actual content of the web page if changed to "never". See enclosed program. A similar issue has been reported on arm: https://github.com/luakit/luakit/issues/773 (issue is closed only because turning off the hardware acceleration policy is a "fix"). debian:libwebkit2gtk-4.0-37:i386 2.18.6-1~deb9u1 1529222 1 cgarcia 2019-04-22 04:58:05 -0700 I can't reproduce it with 2.24.1 1529254 2 mcatanzaro 2019-04-22 09:01:44 -0700 It's obviously hardware-specific. We'll need to buy whatever graphics hardware sgerwk is using. Or if it's a VM, that would be good to know. I believe this bug occurs in all VMWare VMs, for instance. Nobody ever bothered to report it here, but VMWare is why gnome-online-accounts wound up turning off AC mode. 1529662 3 sgerwk 2019-04-23 11:12:16 -0700 Some more details: I tested luakit and my testing program on two different machines with two different video cards: - VGA compatible controller: Intel Corporation 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device (rev 01) - VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV100/M6 [Rage/Radeon Mobility Series] Both computers are x86, so the problem may be related to them being 32 bits, or maybe they lack the required hardware acceleration features? I don't know which arm hardware had the same problem, but I may ask. 1529713 4 mcatanzaro 2019-04-23 13:25:49 -0700 (In reply to sgerwk from comment #0) > debian:libwebkit2gtk-4.0-37:i386 2.18.6-1~deb9u1 Oh I missed this... yes, it's probably related to i386 architecture. When you said x86, I just assumed x86_64. 2008390 5 awkravchuk 2024-01-28 23:21:52 -0800 I'm still affected by this bug in Webkit 2.42.4 using both Luakit and Nyxt browsers. I'm ready to provide any additional information and/or conduct any tests needed. 367892 2019-04-20 10:24:50 -0700 2019-04-20 10:24:50 -0700 testing program webkit.c text/x-csrc 3413 sgerwk LyoKICogdGVzdCB3ZWJraXRndGsgd2l0aCBoYXJkd2FyZSBhY2NlbGVyYXRpb24gb24gb3Igb2Zm CiAqLwoKI2luY2x1ZGUgPHN0ZGxpYi5oPgojaW5jbHVkZSA8c3RyaW5nLmg+CiNpbmNsdWRlIDxn dGsvZ3RrLmg+CiNpbmNsdWRlIDx3ZWJraXQyL3dlYmtpdDIuaD4KCiNkZWZpbmUgVVJJMSAiaHR0 cHM6Ly93d3cuZ29vZ2xlLmNvbS8iCiNkZWZpbmUgVVJJMiAiaHR0cHM6Ly9naXRodWIuY29tLyIK Ci8qCiAqIGFsdGVybmF0ZSBiZXR3ZWVuIFVSSTEgYW5kIFVSSTIKICovCnN0YXRpYyB2b2lkIGxv YWRfb3RoZXIoR3RrV2lkZ2V0ICp3LCBncG9pbnRlciB1c2VyX2RhdGEpIHsKCVdlYktpdFdlYlZp ZXcgKndlYnZpZXc7Cgljb25zdCBnY2hhciAqdXJpOwoKCXdlYnZpZXcgPSBXRUJLSVRfV0VCX1ZJ RVcodXNlcl9kYXRhKTsKCXVyaSA9IHdlYmtpdF93ZWJfdmlld19nZXRfdXJpKHdlYnZpZXcpOwoJ cHJpbnRmKCJjdXJyZW50IHVyaTogJXNcbiIsIHVyaSk7CglpZiAoISBzdHJjbXAodXJpLCBVUkkx KSkKCQl3ZWJraXRfd2ViX3ZpZXdfbG9hZF91cmkod2VidmlldywgVVJJMik7CgllbHNlCgkJd2Vi a2l0X3dlYl92aWV3X2xvYWRfdXJpKHdlYnZpZXcsIFVSSTEpOwp9CgovKgogKiBjaGFuZ2UgaGFy ZHdhcmUgYWNjZWxlcmF0aW9uIHBvbGljeQogKi8Kc3RhdGljIHZvaWQgY2hhbmdlX2FjY2VsZXJh dGlvbihHdGtXaWRnZXQgKncsIGdwb2ludGVyIHVzZXJfZGF0YSkgewoJV2ViS2l0V2ViVmlldyAq d2VidmlldzsKCVdlYktpdFNldHRpbmdzICpzZXR0aW5nczsKCVdlYktpdEhhcmR3YXJlQWNjZWxl cmF0aW9uUG9saWN5IGFjY2VsOwoKCXdlYnZpZXcgPSBXRUJLSVRfV0VCX1ZJRVcodXNlcl9kYXRh KTsKCglzZXR0aW5ncyA9IHdlYmtpdF93ZWJfdmlld19nZXRfc2V0dGluZ3Mod2Vidmlldyk7Cglh Y2NlbCA9IHdlYmtpdF9zZXR0aW5nc19nZXRfaGFyZHdhcmVfYWNjZWxlcmF0aW9uX3BvbGljeShz ZXR0aW5ncyk7CglpZiAoYWNjZWwgPT0gV0VCS0lUX0hBUkRXQVJFX0FDQ0VMRVJBVElPTl9QT0xJ Q1lfQUxXQVlTKQoJCWFjY2VsID0gV0VCS0lUX0hBUkRXQVJFX0FDQ0VMRVJBVElPTl9QT0xJQ1lf TkVWRVI7CgllbHNlCgkJYWNjZWwgPSBXRUJLSVRfSEFSRFdBUkVfQUNDRUxFUkFUSU9OX1BPTElD WV9BTFdBWVM7Cgl3ZWJraXRfc2V0dGluZ3Nfc2V0X2hhcmR3YXJlX2FjY2VsZXJhdGlvbl9wb2xp Y3koc2V0dGluZ3MsIGFjY2VsKTsKfQoKLyoKICogZ3RrIHdpbmRvdyBzdGFydHVwCiAqLwpzdGF0 aWMgdm9pZCBhY3RpdmF0ZShHdGtBcHBsaWNhdGlvbiAqYXBwLCBncG9pbnRlciB1c2VyX2RhdGEp IHsKCUd0a1dpZGdldCAqd2luZG93LCAqbWFpbmJveCwgKnNjcm9sbGVkLCAqd2VidmlldzsKCUd0 a1dpZGdldCAqYnV0dG9uYm94LCAqYnV0dG9uMSwgKmJ1dHRvbjIsICpidXR0b25leGl0OwoJV2Vi S2l0U2V0dGluZ3MgKnNldHRpbmdzOwoKCXdpbmRvdyA9IGd0a19hcHBsaWNhdGlvbl93aW5kb3df bmV3KGFwcCk7CglndGtfd2luZG93X3NldF9kZWZhdWx0X3NpemUoR1RLX1dJTkRPVyh3aW5kb3cp LCA2MDAsIDYwMCk7CgoJbWFpbmJveCA9IGd0a19ib3hfbmV3KEdUS19PUklFTlRBVElPTl9WRVJU SUNBTCwgMCk7CglndGtfY29udGFpbmVyX2FkZChHVEtfQ09OVEFJTkVSKHdpbmRvdyksIG1haW5i b3gpOwoKCXNjcm9sbGVkID0gZ3RrX3Njcm9sbGVkX3dpbmRvd19uZXcoTlVMTCwgTlVMTCk7Cgln dGtfYm94X3BhY2tfc3RhcnQoR1RLX0JPWChtYWluYm94KSwgc2Nyb2xsZWQsIFRSVUUsIFRSVUUs IDApOwoKCXdlYnZpZXcgPSB3ZWJraXRfd2ViX3ZpZXdfbmV3KCk7CglndGtfY29udGFpbmVyX2Fk ZChHVEtfQ09OVEFJTkVSKHNjcm9sbGVkKSwgd2Vidmlldyk7CgoJc2V0dGluZ3MgPSB3ZWJraXRf c2V0dGluZ3NfbmV3KCk7Cgl3ZWJraXRfd2ViX3ZpZXdfc2V0X3NldHRpbmdzKFdFQktJVF9XRUJf VklFVyh3ZWJ2aWV3KSwgc2V0dGluZ3MpOwoKCXdlYmtpdF9zZXR0aW5nc19zZXRfZGVmYXVsdF9m b250X3NpemUoc2V0dGluZ3MsIDQwKTsKCXdlYmtpdF9zZXR0aW5nc19zZXRfaGFyZHdhcmVfYWNj ZWxlcmF0aW9uX3BvbGljeShzZXR0aW5ncywKCQlXRUJLSVRfSEFSRFdBUkVfQUNDRUxFUkFUSU9O X1BPTElDWV9BTFdBWVMpOwoJCS8vIFdFQktJVF9IQVJEV0FSRV9BQ0NFTEVSQVRJT05fUE9MSUNZ X05FVkVSKTsKCglidXR0b25ib3ggPSBndGtfYnV0dG9uX2JveF9uZXcoR1RLX09SSUVOVEFUSU9O X0hPUklaT05UQUwpOwoJZ3RrX2JveF9wYWNrX2VuZChHVEtfQk9YKG1haW5ib3gpLCBidXR0b25i b3gsIEZBTFNFLCBGQUxTRSwgMCk7CgoJYnV0dG9uMSA9IGd0a19idXR0b25fbmV3X3dpdGhfbGFi ZWwoImNoYW5nZSBhY2NlbGVyYXRpb24gcG9saWN5Iik7CglnX3NpZ25hbF9jb25uZWN0KGJ1dHRv bjEsICJjbGlja2VkIiwKCQlHX0NBTExCQUNLKGNoYW5nZV9hY2NlbGVyYXRpb24pLCB3ZWJ2aWV3 KTsKCWd0a19jb250YWluZXJfYWRkKEdUS19DT05UQUlORVIoYnV0dG9uYm94KSwgYnV0dG9uMSk7 CgoJYnV0dG9uMiA9IGd0a19idXR0b25fbmV3X3dpdGhfbGFiZWwoImxvYWQgb3RoZXIiKTsKCWdf c2lnbmFsX2Nvbm5lY3QoYnV0dG9uMiwgImNsaWNrZWQiLAoJCUdfQ0FMTEJBQ0sobG9hZF9vdGhl ciksIHdlYnZpZXcpOwoJZ3RrX2NvbnRhaW5lcl9hZGQoR1RLX0NPTlRBSU5FUihidXR0b25ib3gp LCBidXR0b24yKTsKCglidXR0b25leGl0ID0gZ3RrX2J1dHRvbl9uZXdfd2l0aF9sYWJlbCgiZXhp dCIpOwoJZ19zaWduYWxfY29ubmVjdF9zd2FwcGVkKGJ1dHRvbmV4aXQsICJjbGlja2VkIiwKCQlH X0NBTExCQUNLKGd0a193aWRnZXRfZGVzdHJveSksIHdpbmRvdyk7CglndGtfY29udGFpbmVyX2Fk ZChHVEtfQ09OVEFJTkVSKGJ1dHRvbmJveCksIGJ1dHRvbmV4aXQpOwoKCWd0a193aWRnZXRfc2hv d19hbGwod2luZG93KTsKCgl3ZWJraXRfd2ViX3ZpZXdfbG9hZF91cmkoV0VCS0lUX1dFQl9WSUVX KHdlYnZpZXcpLCBVUkkxKTsKfQoKLyoKICogbWFpbgogKi8KaW50IG1haW4oaW50IGFyZ2MsIGNo YXIgKmFyZ3ZbXSkgewoJR3RrQXBwbGljYXRpb24gKmFwcDsKCglhcHAgPSBndGtfYXBwbGljYXRp b25fbmV3KCJzZ2Vyd2sub3JnIiwgR19BUFBMSUNBVElPTl9GTEFHU19OT05FKTsKCWlmIChhcHAg PT0gTlVMTCkgewoJCWdfcHJpbnQoImNhbm5vdCBjcmVhdGUgYXBwXG4iKTsKCQlleGl0KEVYSVRf RkFJTFVSRSk7Cgl9CglnX3NpZ25hbF9jb25uZWN0KGFwcCwgImFjdGl2YXRlIiwgR19DQUxMQkFD SyhhY3RpdmF0ZSksIE5VTEwpOwoJZ19wcmludCgic3RhcnRpbmdcbiIpOwoJZ19hcHBsaWNhdGlv bl9ydW4oR19BUFBMSUNBVElPTihhcHApLCBhcmdjLCBhcmd2KTsKCWdfcHJpbnQoImRvbmVcbiIp OwoJZ19vYmplY3RfdW5yZWYoYXBwKTsKCglyZXR1cm4gRVhJVF9TVUNDRVNTOwp9Cgo=