Bug 41224

Summary: Need to implement SVG Filter "smart effect boundaries"
Product: WebKit Reporter: W. James MacLean <wjmaclean>
Component: SVGAssignee: Nobody <webkit-unassigned>
Status: RESOLVED DUPLICATE    
Severity: Normal CC: krit
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: All   
OS: All   
Bug Depends on:    
Bug Blocks: 68469, 26389    
Attachments:
Description Flags
Unix_history-simple.en.svg none

Description W. James MacLean 2010-06-25 13:12:29 PDT 
When rendering an image like http://en.wikipedia.org/wiki/File_talk:Unix_history-simple.svg , which contains a filter that specifies filterUnits="userSpaceOnUse", the image's SVG filters are applied to the entire canvas for each object, instead of just the minimum necessary region around each affected object. This leads to unnecessarily long rendering times (this image can take several minutes as the filter is applied multiple times to the entire canvas). The code should be modified to calculate the minimum effected region around each object, and just apply the filter to that instead.
Comment 1 W. James MacLean 2010-06-25 13:21:06 PDT 
Created attachment 59790 [details]
Unix_history-simple.en.svg

Apologies ... the link included in the description is wrong, please use this attachment from bug 40837 instead.
Comment 2 Dirk Schulze 2010-07-01 05:08:48 PDT 

*** This bug has been marked as a duplicate of bug 31370 ***