Add willReadFrequently to 2d canvas contexts, where appropriate. #6084
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This chang add the willReadFrequently:true 2d context creation attribute to call sites where canvases will be read from (i.e getImagData or toDataURL). This is a performance hint that tells the browser to optimize for readbacks. See: https://html.spec.whatwg.org/multipage/canvas.html#concept-canvas-will-read-frequently The new API will soon be launched in chromium-based web browsers. The objective of this change is to optimize performance and prevent possible performance regressions when this new feature is launched by major web browser in the near future.
archmoj
reviewed
Mar 23, 2022
archmoj
reviewed
Mar 23, 2022
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Thanks very much for the PR! |
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Hi. I'm still getting browser warning about missing |
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This change adds the willReadFrequently:true 2d context creation
attribute to call sites where canvases will be read from (i.e
getImageData or toDataURL). This is a performance hint that tells
the browser to optimize for readbacks.
See: https://html.spec.whatwg.org/multipage/canvas.html#concept-canvas-will-read-frequently
The new API will soon be launched in chromium-based web browsers.
The objective of this change is to optimize performance and prevent
possible performance regressions when this new feature is launched
by major web browser in the near future.