Bug 150257

Created attachment 263332 [details] Screenshot of the issue. Reproduced with WebKitGTK+ 2.10.0 and with Safari 7.1 on OS X Mavericks. Steps to reproduce the problem: =============================== Open the URL: https://rawgit.com/tanty/design-hodgepodge/master/svg/filter/feBlend-feImage-tests.html What is the expected behavior? ============================== All the SVGs are shown as the included PNG as reference What went wrong? ================ Only the SVGs in which the feImage provides explicit values for x=0, y=0, width=100% and height=100% are shown correctly. The 2 SVGs in which this values are not provided for the feImage (the defaults are as explained above[1]) are not displayed properly. Funnily enough, the render is yet different depending on whether the embedded SVG document provides a "viewBox" attribute. If the viewBox is not explicit, the feImage shows proper proportions but the origin seems to be in the left top corner of the filter region[2] (x=-10%, y=-10%). If the viewBox is explicit to the width and height values of the embedded SVG document (which, AFAIK, is the default), the proportions are also wrong. [1] http://www.w3.org/TR/SVG/filters.html#FilterPrimitiveSubRegion [2] http://www.w3.org/TR/SVG/filters.html#FilterEffectsRegion