[cairo] text measuring speed

Jon Smirl jonsmirl at gmail.com
Sat Jun 11 11:27:18 PDT 2005

On 6/11/05, Keith Packard <keithp at keithp.com> wrote:
> None of this has any bearing on the performance of text through either
> Glitz or the Render extension as those work purely in device space.

Thanks for explaining all of this. I'm not objecting to how anything
is coded, I didn't understand enough about the architecture to make
sense of the mail I was reading. In return I'll answer all your
questions on EGL and DRM if I can.

I'm trying to get an idea of how to use the next gen GPU feature of
"texture programs" in conjunction with cairo/pango from an
architectural planning point of view.  Now I understand more about
Cairo font handling and I can get an idea about how Cairo could use
texture programs. A key mistake I was making was in who was doing the
kerning. That was causing me to draw the wrong conclusions.

If I need a glyph transformed into a non-rectangular region who does
the transform Cairo or do you ask the back end to generate a
transformed glyph? Or does the answer vary with the backend?

Jon Smirl
jonsmirl at gmail.com

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