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Bug#510625: marked as forwarded (impressive: botched display or segfaul

Subject: Bug#510625: marked as forwarded impressive: botched display or segfaults at some resolutions due to misconfigured opengl textures
From: Debian Bug Tracking System
Date: Sat, 03 Jan 2009 22:42:04 +0000
Your message dated Sat, 3 Jan 2009 17:38:51 -0500
with message-id <[email protected]>
has caused the   report #510625,
regarding impressive: botched display or segfaults at some resolutions due to 
misconfigured opengl textures
to be marked as having been forwarded to the upstream software
author(s) Martin Fiedler <[email protected]>

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-- 
510625: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=510625
Debian Bug Tracking System
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--- Begin Message ---
Subject: Re: Bug#510625: impressive: botched display or segfaults at some resolutions due to misconfigured opengl textures
From: Yaroslav Halchenko
Date: Sat, 3 Jan 2009 17:38:51 -0500
Thanks Benoit,

I'm forwarding your email which includes fix upstream
where it belongs ;-)

Cheers
Yarik

On Sat, 03 Jan 2009, Benoit TRIQUET wrote:

> Package: impressive
> Version: 0.10.2r-2
> Severity: normal
> Tags: patch

> impressive uses RGB textures with 3 bytes per texel. Unfortunately
> impressive does not call glPixelStorei(GL_UNPACK_ALIGNMENT, 1) so opengl
> skips bytes at the end of each row when width*3 is not a multiple of 4,
> causing a slanted display and sometimes a segfault due to a short read.
> A fix is attached.
> The bug and fix have been reported upstream.

> -- System Information:
> Debian Release: 5.0
>   APT prefers testing
>   APT policy: (500, 'testing')
> Architecture: i386 (i686)

> Kernel: Linux 2.6.26-1-686 (SMP w/1 CPU core)
> Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
> Shell: /bin/sh linked to /bin/bash

> Versions of packages impressive depends on:
> ii  perl                    5.10.0-18        Larry Wall's Practical 
> Extraction 
> ii  poppler-utils           0.8.7-1          PDF utilitites (based on 
> libpopple
> ii  python                  2.5.2-3          An interactive high-level 
> object-o
> ii  python-imaging          1.1.6-3          Python Imaging Library
> ii  python-opengl           3.0.0~b6-3       Python bindings to OpenGL
> ii  python-pygame           1.7.1release-4.2 SDL bindings for games 
> development
> ii  python-support          0.8.4            automated rebuilding support for 
> P
> ii  xpdf-reader             3.02-1.4         Portable Document Format (PDF) 
> sui

> Versions of packages impressive recommends:
> ii  ghostscript-x            8.62.dfsg.1-3.1 The GPL Ghostscript 
> PostScript/PDF
> ii  pdftk                    1.41-3          useful tool for manipulating PDF 
> d

> Versions of packages impressive suggests:
> ii  latex-beamer                  3.07-1     LaTeX class to produce 
> presentatio

> -- no debconf information

> --- /usr/share/impressive/impressive.py       2008-12-05 21:30:51.000000000 
> +0100
> +++ impressive.py     2009-01-03 20:00:18.000000000 +0100
> @@ -3402,6 +3402,7 @@
>          TexMaxS = ScreenWidth  * 1.0 / TexWidth
>          TexMaxT = ScreenHeight * 1.0 / TexHeight
>      TexSize = TexWidth * TexHeight * 3
> +    glPixelStorei(GL_UNPACK_ALIGNMENT, 1)

>      # set up some variables
>      if DAR is not None:


-- 
Yaroslav Halchenko
Research Assistant, Psychology Department, Rutgers-Newark
Student  Ph.D. @ CS Dept. NJIT
Office: (973) 353-1412 | FWD: 82823 | Fax: (973) 353-1171
        101 Warren Str, Smith Hall, Rm 4-105, Newark NJ 07102
WWW:     http://www.linkedin.com/in/yarik        


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