From: "Gabriel Diaz" <gabidiaz@gmail.com>
To: "Fans of the OS Plan 9 from Bell Labs" <9fans@cse.psu.edu>
Subject: Re: [9fans] printing via local attached printer with gs driver
Date: Mon, 18 Jun 2007 20:07:59 +0200 [thread overview]
Message-ID: <82c890d00706181107g7c413043obd3d6bded2758707@mail.gmail.com> (raw)
In-Reply-To: <20070618180031.7874F1E8C4D@holo.morphisms.net>
hello
No, I just used the CD of May 12. should i recompile gs and see what happens?
thanks
gabi
On 6/18/07, Russ Cox <rsc@swtch.com> wrote:
> Did you compile your own copy of ghostscript?
> This is a common problem if you compile directly
> from the gs sources; there are some Plan 9 specific
> changes that must be made. See /sys/src/cmd/gs/mkfile:
>
> # If you get weird floating point errors, the culprit is usually the
> # halftone code, which converts double to uint, something 8c handles
> # incorrectly (treats as double to int). Look in src/gshtscr.c for a line like
> #
> # sample = (ht_sample_t)((value+1) * max_ht_sample);
> #
> # and change it to one of:
> #
> # sample = (int)(vlong)((value+1) * max_ht_sample);
> # sample = (ht_sample_t)(value * max_ht_sample) + max_ht_sample;
> #
> # depending on your preference.
> #
> # Also, recent versions of src/gxshade1.c cause the compiler to run out
> # of registers. Brucee is looking into this. In the meantime, use this
> # replacement:
> #
> # private inline void
> # make_other_poles(patch_curve_t curve[4])
> # {
> # int i, j;
> #
> # for (i = 0; i < 4; i++) {
> # j = (i + 1) % 4;
> # curve[i].control[0].x = (curve[i].vertex.p.x * 2 + curve[j].vertex.p.x);
> # curve[i].control[0].x /= 3;
> # curve[i].control[0].y = (curve[i].vertex.p.y * 2 + curve[j].vertex.p.y);
> # curve[i].control[0].y /= 3;
> # curve[i].control[1].x = (curve[i].vertex.p.x + curve[j].vertex.p.x * 2);
> # curve[i].control[1].y /= 3;
> # curve[i].control[1].y = (curve[i].vertex.p.y + curve[j].vertex.p.y * 2);
> # curve[i].control[1].y /= 3;
> # curve[i].straight = true;
> # }
> # }
> #
> # (the original includes the /3 in the big expressions).
>
> The source in the distribution should be patched already.
> Also I thought I fixed 8c to do the right float -> uint
> conversion, but it would have been quite a while ago
> and I don't remember.
>
> Russ
>
>
next prev parent reply other threads:[~2007-06-18 18:07 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-18 17:54 Gabriel Diaz
2007-06-18 18:00 ` Russ Cox
2007-06-18 18:07 ` Gabriel Diaz [this message]
2007-06-22 7:37 ` Gabriel Diaz
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