[Webkit-unassigned] [Bug 116616] New: [BlackBerry] backface-visibility: hidden doesn't work properly with masks and filters
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Wed May 22 07:20:20 PDT 2013
https://bugs.webkit.org/show_bug.cgi?id=116616
Summary: [BlackBerry] backface-visibility: hidden doesn't work
properly with masks and filters
Product: WebKit
Version: 528+ (Nightly build)
Platform: Unspecified
OS/Version: Unspecified
Status: NEW
Severity: Normal
Priority: P2
Component: WebKit BlackBerry
AssignedTo: webkit-unassigned at lists.webkit.org
ReportedBy: anilsson at rim.com
CC: xan.lopez at gmail.com, jpetsovits at blackberry.com,
cgarcia at igalia.com, anlo at rim.com
When we switched from Skia to BlackBerry::Platform::Graphics::GraphicsContext, we switched the winding order for culling, since the BB::P::G::GC uses clockwise geometry and requires glFrontFace(GL_CW). However, masks and filters still use counterclockwise geometry as we used to do with Skia. So they get erroneously culled out when -webkit-backface-visibility: hidden is applied.
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