From: Russ Cox <russcox@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: Re: [9fans] point2rgb and point2rgba
Date: Mon, 31 Jan 2005 13:01:32 -0500 [thread overview]
Message-ID: <ee9e417a050131100179bb8610@mail.gmail.com> (raw)
In-Reply-To: <673bb0f7f7be8c76f1db56fb175f06a9@plan9.ucalgary.ca>
> here are the prototypes:
>
> point2rgb(Image *, Point, uchar *r, uchar *g, uchar *b)
> point2rgb(Image *, Point, uchar *r, uchar *g, uchar *b, uchar *alpha)
>
> s/uchar/int/ if you think it's better...
i'd just make it
ulong point2rgba(Image*, Point)
but i question the utility. if you want just one
pixel, fine, but how often does that happen?
you probably want many pixels, in which case
you should use unloadimage anyway.
each call to point2rgba would have to do
multiple 9p transactions with the draw server.
for anything that processes an entire image,
unloadimage is the right way to go.
russ
next prev parent reply other threads:[~2005-01-31 18:01 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-31 14:54 andrey mirtchovski
2005-01-31 15:01 ` andrey mirtchovski
2005-01-31 18:01 ` Russ Cox [this message]
2005-01-31 18:23 ` andrey mirtchovski
2005-01-31 18:26 ` Russ Cox
2005-01-31 18:46 ` rog
2005-01-31 18:47 ` andrey mirtchovski
2005-01-31 18:57 ` Russ Cox
2005-01-31 19:14 ` andrey mirtchovski
2005-01-31 19:19 ` rog
2005-01-31 19:33 ` andrey mirtchovski
2005-01-31 19:37 ` Joel Salomon
2005-01-31 19:48 ` andrey mirtchovski
2005-01-31 20:27 ` rog
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