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Groups > comp.lang.c > #59196

Re: chosing "small 2d graphics library" interface

From Nobody <nobody@nowhere.invalid>
Newsgroups comp.lang.c
Subject Re: chosing "small 2d graphics library" interface
Date 2015-03-29 12:50 +0100
Organization A noiseless patient Spider
Message-ID <pan.2015.03.29.11.51.16.159000@nowhere.invalid> (permalink)
References <ba08a0b0-e761-430f-9c23-458f7f14667d@googlegroups.com> <42b93617-513d-47db-88c0-21e9ca3a7422@googlegroups.com> <cd130b60-24c3-4d3a-850e-34e0120adb92@googlegroups.com>

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On Sun, 29 Mar 2015 03:51:34 -0700, fir wrote:

> does maybe someone know if i will wrap such
> code above in dll will i get slowdowns on 
> acces to  BUFF[y*BUFF_SIZE_X + x] = color
> form the user code or no?

If you wrap the above in a set_pixel(x,y,color) function which you then
call in a loop, it's likely to have significantly worse performance than
using a macro or an inline function.

Also: I suggest allowing for a stride (offset between rows) which isn't
necessarily the same as width * bytes_per_pixel. Doing so allows you to
treat any rectangular subregion of an image as an image.

Personally, I'd define a structure for the image parameters, rather than
passing them as separate arguments.

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chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-03-28 18:43 -0700
  Re: chosing "small 2d graphics library"  interface Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-29 02:59 -0700
    Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-03-29 03:51 -0700
      Re: chosing "small 2d graphics library"  interface Richard Heathfield <rjh@cpax.org.uk> - 2015-03-29 12:03 +0100
        Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-03-29 05:00 -0700
          Re: chosing "small 2d graphics library"  interface gof@somewhere.invalid (Gof) - 2015-04-01 08:02 +0000
            Re: chosing "small 2d graphics library"  interface Richard Heathfield <rjh@cpax.org.uk> - 2015-04-01 09:40 +0100
              Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-04-01 04:04 -0700
      Re: chosing "small 2d graphics library"  interface Nobody <nobody@nowhere.invalid> - 2015-03-29 12:50 +0100
        Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-03-29 05:08 -0700
    Re: chosing "small 2d graphics library"  interface Jeff Higgins <jeff@invalid.invalid> - 2015-03-29 09:33 -0400
      Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-03-29 07:00 -0700
        Re: chosing "small 2d graphics library"  interface Jeff Higgins <jeff@invalid.invalid> - 2015-03-29 10:38 -0400
          Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-03-29 07:43 -0700
      Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-03-29 07:24 -0700
        Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-03-29 07:32 -0700
      Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-04-01 05:00 -0700
        Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-04-01 07:25 -0700
    Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-03-29 07:36 -0700
      Re: chosing "small 2d graphics library"  interface Jeff Higgins <jeff@invalid.invalid> - 2015-03-29 14:33 -0400
        Re: chosing "small 2d graphics library"  interface Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-29 12:36 -0700
        Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-03-29 13:01 -0700
  chosing "small 2d graphics library"  interface asetofsymbols@gmail.com - 2015-04-02 04:12 -0700
    Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-04-02 04:56 -0700
      Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-04-02 05:10 -0700
        Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-04-02 05:31 -0700
        Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-04-02 09:40 -0700
    Re: chosing "small 2d graphics library"  interface Richard Heathfield <rjh@cpax.org.uk> - 2015-04-02 13:32 +0100
      Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-04-02 05:50 -0700
        Re: chosing "small 2d graphics library"  interface Richard Heathfield <rjh@cpax.org.uk> - 2015-04-02 14:01 +0100
          Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-04-02 06:37 -0700
            Re: chosing "small 2d graphics library"  interface Richard Heathfield <rjh@cpax.org.uk> - 2015-04-02 14:58 +0100
              Re: chosing "small 2d graphics library"  interface Bartc <bc@freeuk.com> - 2015-04-02 15:11 +0100
                Re: chosing "small 2d graphics library"  interface Richard Heathfield <rjh@cpax.org.uk> - 2015-04-02 15:18 +0100
                Re: chosing "small 2d graphics library"  interface Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-04-02 09:21 -0700
                Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-04-02 09:34 -0700
                Re: chosing "small 2d graphics library"  interface Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-04-02 09:47 -0700
                Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-04-02 09:45 -0700
                Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-04-02 09:57 -0700
                Re: chosing "small 2d graphics library"  interface Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-04-02 10:15 -0700
                Re: chosing "small 2d graphics library"  interface Richard Heathfield <rjh@cpax.org.uk> - 2015-04-02 18:34 +0100
                Re: chosing "small 2d graphics library"  interface Richard Heathfield <rjh@cpax.org.uk> - 2015-04-02 18:35 +0100
                Re: chosing "small 2d graphics library"  interface Richard Heathfield <rjh@cpax.org.uk> - 2015-04-02 17:45 +0100
                Re: chosing "small 2d graphics library"  interface Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-04-02 10:12 -0700
                Re: chosing "small 2d graphics library"  interface Richard Heathfield <rjh@cpax.org.uk> - 2015-04-02 18:28 +0100
                Re: chosing "small 2d graphics library"  interface Bartc <bc@freeuk.com> - 2015-04-03 01:06 +0100
                Re: chosing "small 2d graphics library"  interface luser droog <luser.droog@gmail.com> - 2015-04-02 17:05 -0700
                Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-04-02 07:51 -0700
                Re: chosing "small 2d graphics library"  interface Richard Heathfield <rjh@cpax.org.uk> - 2015-04-02 15:56 +0100
                Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-04-02 08:14 -0700
                Re: chosing "small 2d graphics library"  interface Richard Heathfield <rjh@cpax.org.uk> - 2015-04-02 16:25 +0100
                Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-04-02 08:45 -0700
                Re: chosing "small 2d graphics library"  interface Richard Heathfield <rjh@cpax.org.uk> - 2015-04-02 17:00 +0100
                Re: chosing "small 2d graphics library"  interface Keith Thompson <kst-u@mib.org> - 2015-04-02 13:03 -0700
                Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-04-05 14:25 -0700
                Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-04-02 09:06 -0700
                Re: chosing "small 2d graphics library"  interface Rosario19 <Ros@invalid.invalid> - 2015-04-02 18:22 +0200
                Re: chosing "small 2d graphics library"  interface Rosario19 <Ros@invalid.invalid> - 2015-04-02 18:40 +0200
                Re: chosing "small 2d graphics library"  interface Robert Wessel <robertwessel2@yahoo.com> - 2015-04-03 00:20 -0500
                Re: chosing "small 2d graphics library"  interface Rosario19 <Ros@invalid.invalid> - 2015-04-04 10:35 +0200
                Re: chosing "small 2d graphics library"  interface CHIN Dihedral <dihedral88888@gmail.com> - 2015-04-04 09:53 -0700
                Re: chosing "small 2d graphics library" interface Noob <root@127.0.0.1> - 2015-04-03 14:27 +0200
                Re: chosing "small 2d graphics library" interface fir <profesor.fir@gmail.com> - 2015-04-03 05:38 -0700
              Re: chosing "small 2d graphics library"  interface Jeff Higgins <jeff@invalid.invalid> - 2015-04-02 19:23 -0400
                Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-04-02 23:46 -0700
      Re: chosing "small 2d graphics library"  interface asetofsymbols@gmail.com - 2015-04-02 08:03 -0700
        Re: chosing "small 2d graphics library"  interface Richard Heathfield <rjh@cpax.org.uk> - 2015-04-02 16:14 +0100
          Re: chosing "small 2d graphics library"  interface Keith Thompson <kst-u@mib.org> - 2015-04-02 12:42 -0700
          Re: chosing "small 2d graphics library"  interface CHIN Dihedral <dihedral88888@gmail.com> - 2015-04-03 14:27 -0700
            Re: chosing "small 2d graphics library"  interface Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-04-03 14:50 -0700
      Re: chosing "small 2d graphics library"  interface Keith Thompson <kst-u@mib.org> - 2015-04-02 10:47 -0700
      Re: chosing "small 2d graphics library"  interface Bartc <bc@freeuk.com> - 2015-04-02 20:09 +0100
        Re: chosing "small 2d graphics library"  interface Richard Heathfield <rjh@cpax.org.uk> - 2015-04-03 06:02 +0100
          Re: chosing "small 2d graphics library"  interface Bartc <bc@freeuk.com> - 2015-04-03 11:40 +0100
            Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-04-03 03:52 -0700
              Re: chosing "small 2d graphics library"  interface Bartc <bc@freeuk.com> - 2015-04-03 12:05 +0100
                Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-04-03 04:36 -0700
                Re: chosing "small 2d graphics library"  interface Bartc <bc@freeuk.com> - 2015-04-03 13:28 +0100
                Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-04-03 06:04 -0700
                Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-04-03 07:28 -0700
                Re: chosing "small 2d graphics library"  interface fir <profesor.fir@gmail.com> - 2015-04-03 12:43 -0700
            Re: chosing "small 2d graphics library"  interface Richard Heathfield <rjh@cpax.org.uk> - 2015-04-03 12:57 +0100
      Re: chosing "small 2d graphics library"  interface asetofsymbols@gmail.com - 2015-04-03 22:25 -0700
        Re: chosing "small 2d graphics library"  interface asetofsymbols@gmail.com - 2015-04-03 22:34 -0700
          Re: chosing "small 2d graphics library"  interface asetofsymbols@gmail.com - 2015-04-03 23:09 -0700
            Re: chosing "small 2d graphics library"  interface Richard Heathfield <rjh@cpax.org.uk> - 2015-04-04 09:23 +0100
    chosing "small 2d graphics library"  interface asetofsymbols@gmail.com - 2015-04-02 07:26 -0700

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