RESOLVED INVALID 103357
[Qt] Coordinated Graphics: flash due to wrong transform and clipping. 
https://bugs.webkit.org/show_bug.cgi?id=103357
Summary [Qt] Coordinated Graphics: flash due to wrong transform and clipping.
Dongseong Hwang
Reported 2012-11-26 21:35:38 PST
When I tested snowstack in Qt WK2, I experienced flashing. http://www.satine.org/research/webkit/snowleopard/snowstack.html In the detail, when we press the right arrow key, gallery animation smoothly shifts on the right direction. In animation, whole screen shifts the left-top side sometimes with wrong clipping of the right-bottom side. It is because LayerTreeRenderer::paintToCurrentGLContext receives wrong matrix and clipRect. QSGNode may compute not well. I don't know why yet. void LayerTreeRenderer::paintToCurrentGLContext(const TransformationMatrix& matrix, float opacity, const FloatRect& clipRect, TextureMapper::PaintFlags PaintFlags) I'll be pleasure if other forks fix it.
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Jocelyn Turcotte
Comment 1 2014-02-03 03:23:43 PST
=== Bulk closing of Qt bugs === If you believe that this bug report is still relevant for a non-Qt port of webkit.org, please re-open it and remove [Qt] from the summary. If you believe that this is still an important QtWebKit bug, please fill a new report at https://bugreports.qt-project.org and add a link to this issue. See http://qt-project.org/wiki/ReportingBugsInQt for additional guidelines.
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