[Webkit-unassigned] [Bug 73634] [GTK] Add TextureMapper ImageBuffer support as a fallback from the hardware accelerated path

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=73634





--- Comment #14 from Alejandro G. Castro <alex at igalia.com>  2012-05-29 04:12:26 PST ---
(In reply to comment #13)
> (In reply to comment #12)
> > (From update of attachment 143550 [details] [details])
> > View in context: https://bugs.webkit.org/attachment.cgi?id=143550&action=review
> > 
> > Looking pretty good. Just a few small suggestions. Do we lose any information by immediately converting the transformation matrix to an affine transformation instead of building up a transformation matrix and then converting it to an affine transformation when necessary? 
> > 
> 
> Yep, we are losing information, namely perspective information. I've added a FIXME in the patch but I'll try to check if we can do it later.

Just checked the only function using the get3DTransform is the beginClip and we are getting a transformation that could be a mix of 2D and 3D transforms converted at that point. So we would have to check all the transformations and try to approximate the perspective some other way if we want to do something smarter. I guess we can do that in next patches if we find a good way.

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