Re: [css-shaders] Exploring JS shaders

Hi Charles,

I think this is an interesting. You are talking about exploring this idea: do you have an example of how you would go about writing a shader in this context?

Thanks,
Vincent

From: Charles Pritchard <chuck@jumis.com<mailto:chuck@jumis.com>>
Date: Thu, 20 Oct 2011 12:14:23 -0700
To: "public-fx@w3.org<mailto:public-fx@w3.org>" <public-fx@w3.org<mailto:public-fx@w3.org>>
Subject: [css-shaders] Exploring JS shaders

Carrying on from the [css-shaders] discussion on www-style, in which it
has been proposed that webgl shaders
be usable through the css filter() property...

CSS Shaders editorial draft:
https://dvcs.w3.org/hg/FXTF/raw-file/tip/custom/index.html


I'd like to explore the use of JS as an additional route for authors to
write shaders.

The Web Workers specifications and Transferable semantics ( postMessage
) are reasonable mature, nowadays.

There are now two implementations for parallelism in tight JavaScript loops:

W16 for the V8 JS Engine:
https://github.com/sheremetyev/w16

River Trail, a Firefox extension:
https://github.com/RiverTrail/RiverTrail


Web Workers is isolated and off-thread; the structured clone algorithm
allows for transferring
buffers across threads without needing to copy the buffer. The recent
parallel extensions for Firefox and V8
demonstrate that JS can be used across multiple cores, in an array
programming style.

This seems like a natural progression.

Intel writing that River Trail can work well within existing semantics
as well as Web GL:
http://blogs.intel.com/research/2011/09/pjs.php



-Charles