[Webkit-unassigned] [Bug 122589] Graphics backend without hardware accelerated compositing, and compositing disabled by Setting, causes CSS3 Transform not correct

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=122589





--- Comment #1 from Chen Zhixiang <chenzx at cn.fujitsu.com>  2013-10-09 23:16:29 PST ---
When debugging, there are different Affine Transform related to this "perspective(300px) rotateX(60deg)" transform rule:

Qt-4.8 xlibgl backend: (wrong)
concatCTM: transform={1.000000,0.000000,-0.577350,0.359993,78.001488,231.040361}

Qt-4.8 xlib backend(ENABLE(3D_RENDERING)=1): (right)
concat3DTransform: transform={1.000000,0.000000,-0.721688,-0.217358,85.001860,259.041849}

Qt-4.8 compiled on Windows/GDI: (right)
concat3DTransform: transform={1.000000,0.000000,-0.721688,-0.217358,85.001860,259.041849}

WinCE: (wrong)
concatCTM: transform={1.000000,0.000000,-0.577350,0.359993,78.001488,231.040361}

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