[whatwg] new constructor method for Path2D

[Rik Cabanier]

On Mon, Mar 10, 2014 at 11:38 AM, Justin Novosad <junov at google.com> wrote:

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>
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> On Mon, Mar 10, 2014 at 2:14 PM, Rik Cabanier <cabanier at gmail.com> wrote:
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>> On Mon, Mar 10, 2014 at 11:07 AM, Joe Gregorio <jcgregorio at google.com
>> >wrote:
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>> >
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>> > What part is slow, the decoding and re-encoding, or is just always the
>> > encoding step
>> > that is slow?
>> >
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>> It's decoding/re-encoding of an already constructed path.
>>
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> Can't the implementation just perform that work lazily the first time the
> path is rasterized, and retain the cached result for subsequent use of the
> path object?
>

At usage time, the path could be retargeted to a new backend. I don't think
that should be done as a cached copy since that would require too many
resources.
I will see if this is an acceptable solution for mozilla.