Bug 120816 - Filters buffers should track whether there is any non-1 alpha, and avoid operations on the alpha channel if necessary
Summary: Filters buffers should track whether there is any non-1 alpha, and avoid oper...
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: Layout and Rendering (show other bugs)
Version: 528+ (Nightly build)
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2013-09-05 17:30 PDT by Simon Fraser (smfr)
Modified: 2013-09-05 17:30 PDT (History)
2 users (show)

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Description Simon Fraser (smfr) 2013-09-05 17:30:33 PDT 
Filters like blur do work on the alpha channel bytes, but in many cases the alpha channel is going to be all 255, and we could avoid doing any math on it (e.g. no point blurring all-255 alpha).