[gentoo-user] FreeType unpatented auto-hinter?

2011-09-26 Thread Nilesh Govindarajan
Somebody on twitter told me that Ubuntu uses a special patch for
freetype that improves font rendering manifolds.

So I rebuilt freetype with these useflags: +auto-hinter +bindist

What is the difference between this unpatented auto hinter and the
TrueType BC interpreter?

-- 
Nilesh Govindarajan
http://nileshgr.com



Re: [gentoo-user] FreeType unpatented auto-hinter?

2011-09-26 Thread Paul Hartman
On Mon, Sep 26, 2011 at 10:13 AM, Nilesh Govindarajan
cont...@nileshgr.com wrote:
 Somebody on twitter told me that Ubuntu uses a special patch for
 freetype that improves font rendering manifolds.

 So I rebuilt freetype with these useflags: +auto-hinter +bindist

 What is the difference between this unpatented auto hinter and the
 TrueType BC interpreter?

The auto-hinter USE flag enables the old auto-hinter code that was
used before the bytecode interpreter patents expired (which happened
in 2010). The bytecode interpreter is now the default and is
considered to be the best-performing option.

Since May 2010, all patents related to bytecode hinting have expired
worldwide. It it thus no longer necessary to disable the bytecode
interpreter, and starting with FreeType version 2.4, it is enabled by
default. (according to http://www.freetype.org/patents.html)

I would check with your friend on Twitter to be sure they aren't
talking about pre-freetype-2.4 behavior...

With regard to Ubuntu's actual patches, here they are:
https://launchpadlibrarian.net/76814921/freetype_2.4.4-2ubuntu1.diff.gz

There aren't a lot of apparent changes to the actual freetype engine
(mostly patching the docs, build system and demos). There are
basically no comments, and I can't tell what it's trying to
accomplish.



Re: [gentoo-user] FreeType unpatented auto-hinter?

2011-09-26 Thread pk
On 2011-09-26 17:13, Nilesh Govindarajan wrote:

 What is the difference between this unpatented auto hinter and the
 TrueType BC interpreter?

As far as I know, the truetype byte code interpreter patent expired
about 2 years ago... See:
http://www.osnews.com/story/18166/Interview-with-David-Turner-of-Freetype/

...but don't take my word for it... If you really need to know for sure
- contact a lawyer[1].

[1] IANAL :-)

Best regards

Peter K



Re: [gentoo-user] FreeType unpatented auto-hinter?

2011-09-26 Thread pk
On 2011-09-26 17:13, Nilesh Govindarajan wrote:

 What is the difference between this unpatented auto hinter and the
 TrueType BC interpreter?

Here's some more info:
http://www.freetype.org/patents.html

Best regards

Peter K



Re: [gentoo-user] FreeType unpatented auto-hinter?

2011-09-26 Thread James Broadhead
On 26 September 2011 16:49, pk pete...@coolmail.se wrote:
 ...but don't take my word for it... If you really need to know for sure
 - contact a lawyer[1].

 [1] IANAL :-)

If you were, would you give your opinion freely on the internet?
`s/would/could`?

Since our system is set up so that one can spend significant amounts
of money just to find out whether something is or is not a restricted
idea, only to end up in court anyway because others have more money to
employ lawyers to come up with creative counter-arguments, I don't
think that it's productive to emulate people who think that it's
reasonable or useful to append a disclaimer to every claim that they
make.


THIS EMAIL DOES NOT NECESSARILY NEED TO BE TAKEN LITERALLY. ANY WORDS
IN IT ARE ONES THAT I WROTE, AND ARE NOT INTENDED TO AMUSE OR
OTHERWISE BENEFIT ANY PARTIES THAT HAPPEN TO BE CELEBRATING ANYTHING.
DO NOT PRINT THIS, THINK OF THE CHILDREN. FNORD. (sorry)



Re: [gentoo-user] FreeType unpatented auto-hinter?

2011-09-26 Thread pk
On 2011-09-26 18:13, James Broadhead wrote:

 If you were, would you give your opinion freely on the internet?
 `s/would/could`?

Well, you never know... ;-)

 Since our system is set up so that one can spend significant amounts
 of money just to find out whether something is or is not a restricted
 idea, only to end up in court anyway because others have more money to
 employ lawyers to come up with creative counter-arguments, I don't
 think that it's productive to emulate people who think that it's
 reasonable or useful to append a disclaimer to every claim that they
 make.
 
 THIS EMAIL DOES NOT NECESSARILY NEED TO BE TAKEN LITERALLY. ANY WORDS
 IN IT ARE ONES THAT I WROTE, AND ARE NOT INTENDED TO AMUSE OR
 OTHERWISE BENEFIT ANY PARTIES THAT HAPPEN TO BE CELEBRATING ANYTHING.
 DO NOT PRINT THIS, THINK OF THE CHILDREN. FNORD. (sorry)

:-D

Best regards

Peter K