- From: Oliver Hunt <oliver@apple.com>
- Date: Mon, 09 Dec 2013 13:15:00 -0800
- To: Jeff Muizelaar <jmuizelaar@mozilla.com>
- Cc: What WG WG <whatwg@lists.whatwg.org>, Glenn Maynard <glenn@zewt.org>, Tingan Ho <tingan@p1.cn>, Rik Cabanier <cabanier@gmail.com>, "Tab Atkins Jr." <jackalmage@gmail.com>
On Dec 9, 2013, at 2:29 PM, Tingan Ho <tingan@p1.cn> wrote: >> >> Tingan, would it be acceptable for you to do the resampling in JavaScript? > > > First, writing it in Javascript is less performant. Since natively you can > have access to the GPU. Second, it is abstract a layer for JS developers, > since they don't need to care about bicubic resampling algoritmen. Third, > it kind of make sense if you set imageSmothingEnabled to true in the > context object, that all down-scaling should use bicubic resampling(I > haven't tried yet, but I think the scale use bicubic sampling). I’m not sure why you have a bias towards bicubic filtering as there are many different scaling filters that can be used. Lanczos is better than bicubic in many (most?) cases. Spline scaling can also do a good job, as can fractal interpolation. There are even specific scaling systems like Sal which are designed for upscaling sprites, and do a better job at the specific task than anything else (IIRC this is frequently used by the various old console emulators) —Oliver
Received on Monday, 9 December 2013 21:15:28 UTC