[Webkit-unassigned] [Bug 210992] REGRESSION (r259589): Google Maps background layer fades out and back in

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=210992

James Darpinian <jdarpinian at chromium.org> changed:

           What    |Removed                     |Added
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           Assignee|webkit-unassigned at lists.web |jdarpinian at chromium.org
                   |kit.org                     |

--- Comment #17 from James Darpinian <jdarpinian at chromium.org> ---
I'm looking at this now. First I'm fixing bug 211398.

The reason why the map appears at first and fades to black is that the map is loaded as img tags before WebGL is initialized, and there is a fade transition when switching to WebGL. I'm pretty sure that the black map is related to the progressive antialiasing feature, which renders the map to a offscreen render target before copying it to the screen. The symptoms are consistent with the first frame not being rendered to the offscreen render target. Maybe a bindFramebuffer call is failing for some reason.

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