[Webkit-unassigned] [Bug 88877] SVG Lightning filter effects incorrect under zoom

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=88877





--- Comment #6 from Florin Malita <fmalita at chromium.org>  2012-06-14 11:52:22 PST ---
A couple of problems I found (related to the original bug report - http://crbug.com/13094):

1) light source positioning: currently we're not transforming the light source *at all* (zoom or no zoom)
2) FELighting is applied in unmultiplied space, but the alpha channel is calculated as if in premultiplied space (spec says Sa = max(Sr, Sg, Sb), premultiplied RGBA implied). Then when the image is converted to premultiplied for compositing, the RGB values are scaled down resulting in a darker light effect.

I'll open a separate bug for #2.

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