[webkit-dev] Feature announcement: canvas pixel access API additions for high-resolution backing stores

[Dirk Schulze]

> 
> Different developers will have different priorities. HD image data and async readback both have potential benefits in image quality and nonblocking responsiveness respectively. Here is an example of an application using getImageData which would clearly benefit from HD, but it's not obvious that async would be useful:
> 
> http://mudcu.be/sketchpad/

This seems to be a use case for SVG and not canvas :)

Dirk

> 
> Here is another where HD helps but benefits of async are unclear, since it does a pixel read-write-modify cycle:
> 
> http://nerget.com/pressure/pressure.html
> 
> Tying HD to async may hurt the adoption of both by requiring developers to take two different code change hits when they only care about one. In particular, the async change is likely to be more invasive to code structure.  If developers are discouraged, they may end up using neither. Thus, in my opinion, these two enhancements to ImageData should stand and fall on their own merits.
> 
> Regards,
> Maciej
> 
> 
> 
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