Re: FT Performance Regression?

[Jamie Dale]

Thanks, do you know how much difference the span batching made to
performance?

It's also been pointed out to me that setjmp/longjmp can be very slow (eg,
12ms of a 36ms call was spent in setjmp). Are there any plans to remove FTs
dependence on these functions?

-Jamie.

On Mon, 28 Oct 2019, 03:22 Alexei Podtelezhnikov, <address@hidden>
wrote:

> > Okay, so we're saying the bug here is that you needed to provide the
> clip flag in FT 2.10, and that omitting that in 2.10.1 gives the same
> optimal result as 2.6? If so, then yes, that seems fine.
>
> I think so. FreeType 2.10.1 also restores the direct span buffering,
> which you should appreciate.
>
> > We won't be upgrading FreeType again soon as I started this process back
> in February and don't have time to go through it again for all platforms.
> Is the clip rect I've calculated correct?
>
> Yes, round up at top-right and down at bottom-left. FreeType 2.10.1 is
> worth it.
>
> Best,
> Alexei
>