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Bug 939962: set pref to enable willReadFrequently software canvas option

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This commit is contained in:
David Flanagan 2014-01-06 14:13:57 -08:00
parent ae51a48131
commit 5812575908
1 changed files with 10 additions and 0 deletions
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10
b2g/app/b2g.js
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@ -878,3 +878,13 @@ pref("identity.fxaccounts.auth.uri", "https://api-accounts.dev.lcip.org/v1");
// Gaia relies heavily on scroll events for now, so lets fire them
// more often than the default value (100).
pref("apz.asyncscroll.throttle", 40);
// This preference allows FirefoxOS apps (and content, I think) to force
// the use of software (instead of hardware accelerated) 2D canvases by
// creating a context like this:
//
// canvas.getContext('2d', { willReadFrequently: true })
//
// Using a software canvas can save memory when JS calls getImageData()
// on the canvas frequently. See bug 884226.
pref("gfx.canvas.willReadFrequently.enable", true);