W3C home > Mailing lists > Public > whatwg@whatwg.org > November 2009

[whatwg] Canvas pixel manipulation and performance

From: Jason Oster <parasyte@kodewerx.org>
Date: Sun, 29 Nov 2009 14:14:02 -0700
Message-ID: <4C20FD7E-0A26-4BBC-A058-6BE7D3B6391A@kodewerx.org>
On Nov 29, 2009, at 1:57 PM, Boris Zbarsky wrote:
> So the new code has to do about half as much tile decoding, as well as half the number of imagedata[n] sets?  Or was the decoding already being cached?
Decoded tiles were already cached.  It actually builds MORE tile caches now, though: one cache for each this.fgmap[].  So that's more (a lot more) tile decoding, but far fewer pixel pokes.
Received on Sunday, 29 November 2009 13:14:02 UTC

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