> > > The first visually non-empty milestone almost always happens way before > this point. The above is just a fallback to make sure we eventually hit > this milestone. For example, if a document is totally blank even after > loading the document and all subresources, we want to paint it instead of > waiting forever. > > The visually non-empty heuristic is elsewhere. > > Note that WebKit would consider the paint triggered by the above fallback > code to be both a first paint and “first visually non-empty paint” or > “first meaningful paint”, which somewhat corresponds to Chrome’s notion of > “first contentful paint”. > > First paint can only happen earlier under even more unusual circumstances, > I believe there is a timeout after which we will paint even if all we can > paint is blank white or background color. > > > But let's take the specifics to Slack/bugzilla? > > > I think it would be good for you to talk to people who understand WebKit’s > layout/paint milestones in detail before taking things to bugzilla. Ask on > Slack, and I’ll point you to the right people. > Oops, just saw this, an initial (not for review) patch is already in bugzilla :) But I'll continue the discussion - I have better idea of what to ask now. Who would be the right people to ask?
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