Re: FT Performance Regression?

[Jamie Dale]

Further investigation shows that gray_convert_glyph_inner is now being
called hundreds of times, whereas in 2.6 it was called once.

-Jamie.

On Thu, 24 Oct 2019, 15:28 Jamie Dale, <address@hidden>
wrote:

> Okay, it's FT_Outline_Render that's gotten slower.
>
> Our code is using the same set-up as RenderSpans in this example:
> https://www.freetype.org/freetype2/docs/tutorial/example2.cpp
>
> -Jamie.
>
> On Thu, 24 Oct 2019, 14:59 Jamie Dale, <address@hidden>
> wrote:
>
>> Scratch that, it seems to be something in the FT_Stroker API that's
>> gotten slower.
>>
>> We're continuing to investigate, but let me know if you have any leads.
>>
>> -Jamie.
>>
>> On Thu, 24 Oct 2019, 13:04 Jamie Dale, <address@hidden>
>> wrote:
>>
>>> Hi,
>>>
>>> We recently upgraded from FreeType 2.6 to 2.10, and are finding that
>>> with identical code, things are now running significantly slower
>>> (FT_RenderGlyph seems to be 10x slower).
>>>
>>> I tried changing the "interpreter-version" to both 35 and 40 but it made
>>> no difference.
>>>
>>> Is there anything else we need to disable or change in order to get the
>>> old performance back?
>>>
>>> Thanks,
>>> Jamie.
>>>
>>