[whatwg] Enabling LCD Text in 2D canvases.

[Justin Novosad]

On Wed, Nov 14, 2012 at 2:51 PM, Robert O'Callahan <robert at ocallahan.org>wrote:
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> Given how 2d canvas currently works, I don't see any killer solution that
>> would allow subpixel antialiased text without any caveats.
>>
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> We could keep two copies of the canvas buffer: one rendered with subpixel
> AA and one without, and use the latter for rendering if we think it might
> be resampled. Of course, this isn't going to perform very well.
>

Hmmm... you might be on to something here. Performance may not be that bad
if the buffers are lazily resolved. And if it is an opt-in option, then
everyone is a fast as possible by default.


> Are there precedents for exposing features with documented caveats?
>> (excluding caveats that were discovered after the fact)
>>
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> Yes, and many of them have been extremely problematic, because Web authors
> will ignore the caveats. However, it can be acceptable as long as the bad
> behavior is well-defined and implemented consistently across browsers.
>

Yeah, it is a slippery slope.


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