[Webkit-unassigned] [Bug 79136] Hit testing may be incorrect with perspective transforms

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=79136





--- Comment #4 from Shawn Singh <shawnsingh at chromium.org>  2012-02-21 15:22:00 PST ---
Created an attachment (id=128056)
 --> (https://bugs.webkit.org/attachment.cgi?id=128056&action=review)
test case that causes crash in both recent webkit and chromium builds.

Sorry for the confusion, was referring to Daniel's first comment.   I attached it anyway.

Also, for your convenience, Here is a stack trace from chromium.

ASSERTION FAILED: !isnan(f)
../../third_party/WebKit/Source/WebCore/platform/graphics/transforms/TransformationMatrix.cpp(589) : float WebCore::clampEdgeValue(float)
1   0x2ffab92a WebCore::clampEdgeValue(float)
2   0x2ffab627 WebCore::TransformationMatrix::clampedBoundsOfProjectedQuad(WebCore::FloatQuad const&) const
3   0x3014ba5f WebCore::HitTestingTransformState::boundsOfMappedQuad() const
4   0x302baad1 WebCore::RenderLayer::hitTestLayer(WebCore::RenderLayer*, WebCore::RenderLayer*, WebCore::HitTestRequest const&, WebCore::HitTestResult&, WebCore::IntRect const&, WebCore::IntPoint const&, bool, WebCore::HitTestingTransformState const*, double*)
5   0x302bc9fc WebCore::RenderLayer::hitTestList(WTF::Vector<WebCore::RenderLayer*, 0ul>*, WebCore::RenderLayer*, WebCore::HitTestRequest const&, WebCore::HitTestResult&, WebCore::IntRect const&, WebCore::IntPoint const&, WebCore::HitTestingTransformState const*, double*, double*, WebCore::HitTestingTransformState const*, bool)
6   0x302bb171 WebCore::RenderLayer::hitTestLayer(WebCore::RenderLayer*, WebCore::RenderLayer*, WebCore::HitTestRequest const&, WebCore::HitTestResult&, WebCore::IntRect const&, WebCore::IntPoint const&, bool, WebCore::HitTestingTransformState const*, double*)
7   0x302bc9fc WebCore::RenderLayer::hitTestList(WTF::Vector<WebCore::RenderLayer*, 0ul>*, WebCore::RenderLayer*, WebCore::HitTestRequest const&, WebCore::HitTestResult&, WebCore::IntRect const&, WebCore::IntPoint const&, WebCore::HitTestingTransformState const*, double*, double*, WebCore::HitTestingTransformState const*, bool)
8   0x302bb171 WebCore::RenderLayer::hitTestLayer(WebCore::RenderLayer*, WebCore::RenderLayer*, WebCore::HitTestRequest const&, WebCore::HitTestResult&, WebCore::IntRect const&, WebCore::IntPoint const&, bool, WebCore::HitTestingTransformState const*, double*)
9   0x302bc9fc WebCore::RenderLayer::hitTestList(WTF::Vector<WebCore::RenderLayer*, 0ul>*, WebCore::RenderLayer*, WebCore::HitTestRequest const&, WebCore::HitTestResult&, WebCore::IntRect const&, WebCore::IntPoint const&, WebCore::HitTestingTransformState const*, double*, double*, WebCore::HitTestingTransformState const*, bool)
10  0x302bb171 WebCore::RenderLayer::hitTestLayer(WebCore::RenderLayer*, WebCore::RenderLayer*, WebCore::HitTestRequest const&, WebCore::HitTestResult&, WebCore::IntRect const&, WebCore::IntPoint const&, bool, WebCore::HitTestingTransformState const*, double*)
11  0x302ba5d1 WebCore::RenderLayer::hitTest(WebCore::HitTestRequest const&, WebCore::HitTestResult&)
12  0x33a18c3b WebCore::Document::prepareMouseEvent(WebCore::HitTestRequest const&, WebCore::IntPoint const&, WebCore::PlatformMouseEvent const&)
13  0x2f79d767 WebCore::EventHandler::prepareMouseEvent(WebCore::HitTestRequest const&, WebCore::PlatformMouseEvent const&)
14  0x2f79dd69 WebCore::EventHandler::handleMouseMoveEvent(WebCore::PlatformMouseEvent const&, WebCore::HitTestResult*, bool)
15  0x2f79d860 WebCore::EventHandler::mouseMoved(WebCore::PlatformMouseEvent const&)
16  0x307703ad WebKit::WebViewImpl::mouseMove(WebKit::WebMouseEvent const&)

-- 
Configure bugmail: https://bugs.webkit.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.