In my experience, implementing filters leads to writing them multiple times for various targets.
I suggest starting with the lowest common denominator before targeting platforms like webgl. I understand that Google is working on an in-software webgl implementation (angle is just a conversion lib); at some point LLVM may have sufficient semantics-- it's certainly been attempted (there's a polyhedron article somewhere on the site). Anyway, my two cents. Best of luck! -Charles On Nov 3, 2011, at 5:02 PM, Rik Cabanier <caban...@gmail.com> wrote: > Dean, > > could you implement the filters on top of shaders if the target has WEBGL > acceleration? > Doing animated filters in software will be slow unless you spend a > significant amount of time on coding SSE or NEON instructions. > > Rik > > On Mon, Oct 24, 2011 at 9:02 PM, Dean Jackson <d...@apple.com> wrote: > > On 22/09/2011, at 11:30 AM, Dean Jackson wrote: > > > Dirk (known in these parts as krit) reminded me that I had not emailed > > webkit-dev about the plans to start an implementation of W3C's new Filter > > Effects specification. > > > > https://dvcs.w3.org/hg/FXTF/raw-file/tip/filters/publish/Filters.html > > > > The quick summary is that this exposes the 'filter' property from SVG to > > everything in CSS, and adds some shorthands for common effects so people > > don't have to write XML in order to do something like a blur or sepia > > effect. The spec has received a fair amount of input from the CSS and SVG > > working groups, and particularly from Apple, Google, Mozilla, Opera and > > Adobe. > > A followup: we're going to start work on the CSS Shaders proposal [1] soon. > Adobe have published their implementation which was specific to Chromium, and > we'll be working with them to split it into small patches that can land in > the coming weeks. A good introduction to the technology is [2]. > > This will be done behind the ENABLE_CSS_FILTERS macro, but also with the > guards for ENABLE_WEBGL since the implementation (and security) requirements > are so similar. > > Dean > > [1] https://dvcs.w3.org/hg/FXTF/raw-file/tip/custom/index.html > [2] www.adobe.com/devnet/html5/articles/css-shaders.html > > > _______________________________________________ > webkit-dev mailing list > webkit-dev@lists.webkit.org > http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev > > _______________________________________________ > webkit-dev mailing list > webkit-dev@lists.webkit.org > http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
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