- From: Tab Atkins Jr. <jackalmage@gmail.com>
- Date: Thu, 7 Jul 2011 12:01:54 -0700
- To: Yves Lafon <ylafon@w3.org>
- Cc: Raphaël Troncy <raphael.troncy@eurecom.fr>, fantasai <fantasai.lists@inkedblade.net>, www-style@w3.org, public-media-fragment@w3.org
On Thu, Jul 7, 2011 at 12:51 AM, Yves Lafon <ylafon@w3.org> wrote: > On Wed, 6 Jul 2011, Tab Atkins Jr. wrote: >> 2011/7/6 Raphaël Troncy <raphael.troncy@eurecom.fr>: >>> Following these >>> discussions, we have added the following sentence to the spec: >>> >>> "Note that in the case of pixel-based clipping areas, application of >>> those >>> areas to multi-resolutions visual media is undefined." >>> >>> in the section 4.2.2 [2]. >> >> What's the reasoning for making it undefined? If it's just "it's >> hard", then I don't find that acceptable. > > For percent-based clipping fragments, it makes sense at all resolutions (but > perhaps having them integer-based is sub-optimal in many cases), but for > pixel-based ones, it is impossible to know the intent. > Does the format as a "default" version to apply the pixel clipping to? the > first one? last one? bigger one? The one that fit the display? > So it's not that it's hard, I just don't see how this could work reliably. I agree that it's difficult to find a good answer. If we think the problem is essentially impossible, then we should just make it explicitly unsupported, not undefined. ~TJ
Received on Thursday, 7 July 2011 19:02:41 UTC