[Webkit-unassigned] [Bug 212594] [ macOS ] REGRESSION(r262366): webgl/1.0.3/conformance/canvas/buffer-offscreen-test.html & webgl/2.0.0/conformance/canvas/buffer-offscreen-test.html are constant failures

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=212594

--- Comment #6 from Dean Jackson <dino at apple.com> ---
Oh. I see.

We shouldn't prepare the canvas if it isn't going to be displayed. We're effectively swapping the drawing buffer on a canvas that is never drawn, so when it is read back out it is cleared.

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