David Baron :dbaron: (⌚️UTC-4, no longer working on Mozilla) Reporter
	Description • 8 years ago

If I run:
  ./mach web-platform-tests 2dcontext/drawing-images-to-the-canvas/drawimage_canvas_4.html
which is a test that passes, I see base64 encoded versions of screenshot images in the log.

In the primary reftest harness, we don't do base64 conversion (which is quite expensive) unless the image comparison fails.  This saved a substantial amount of load on our continuous integration infrastructure and made the tests run substantially faster.

We instead use DOMWindowUtils.compareCanvases

	James Graham [:jgraham]
	Comment 1 • 8 years ago

This isn't something that we can do right now because wptrunner uses marionette to drive the tests. If marionette gave a primitive to allow taking a screenshot and storing it in the browser, and another primitive for comparing stored screenshots, we could replicate this optimisation.

	Sam Sneddon [:gsnedders]
	Comment 2 • 7 years ago

fixed by #1363428, no?