Package: xscreensaver-gl
Version: 5.15-3
Severity: normal
File: /usr/lib/xscreensaver/glslideshow

I configured glslideshow with -zoom 100 so that the entire image is
shown. However, this is not the case, only parts of the image are
shown, I assume somewhere around 60% or so. My screen is 1280x800:

  % grep glslid .xscreensaver
  - GL:                           glslideshow -root -duration 20 -zoom 100 
-no-letterbox

  % DISPLAY=:0 xrandr                                                           
                                                                          #10013
  Screen 0: minimum 320 x 200, current 1280 x 800, maximum 8192 x 8192
  LVDS1 connected 1280x800+0+0 (normal left inverted right x axis y axis) 261mm 
x 163mm
    1280x800       60.2*+   50.0
    1024x768       60.0
    800x600        60.3     56.2
    640x480        59.9
  VGA1 disconnected (normal left inverted right x axis y axis)
  HDMI1 disconnected (normal left inverted right x axis y axis)
  DP1 disconnected (normal left inverted right x axis y axis)

Here is the relevant log output:

  xscreensaver 5.15, copyright (c) 1991-2008 by Jamie Zawinski <j...@jwz.org>.
  xscreensaver: 15:14:56: running as madduck/madduck (1000/1000)
  xscreensaver: 15:14:56: in process 4891.
  xscreensaver: 15:14:56: running on display ":0"
  xscreensaver: 15:14:56: vendor is The X.Org Foundation, 11204000.
  xscreensaver: 15:14:56: useful extensions:
  xscreensaver: 15:14:56:   MIT Screen-Saver (disabled at compile time)
  xscreensaver: 15:14:56:   Shared Memory (1.1)
  xscreensaver: 15:14:56:   Double-Buffering (1.0)
  xscreensaver: 15:14:56:   Power Management (1.1)
  xscreensaver: 15:14:56:   GLX
  xscreensaver: 15:14:56:   XF86 Video-Mode (2.2)
  xscreensaver: 15:14:56:   XC Misc (disabled at compile time)
  xscreensaver: 15:14:56:   Xinerama (1.1)
  xscreensaver: 15:14:56:   Resize-and-Rotate (1.3)
  xscreensaver: 15:14:56:   XInput
  xscreensaver: 15:14:56: screen 0 non-colormapped depths: 0 24.
  xscreensaver: 15:14:56: WARNING: RANDR and Xinerama report different
  xscreensaver: 15:14:56:               screen layouts!  Believing RANDR.
  xscreensaver: 15:14:56: screens in use: 1
  xscreensaver: 15:14:56:    0/0: 1280x800+0+0 (LVDS1)
  xscreensaver: 15:14:56: rejected screens: 3
  xscreensaver: 15:14:56:    1/0: 1280x800+0+0 (VGA1) -- output disabled
  xscreensaver: 15:14:56:    2/0: 1280x800+0+0 (HDMI1) -- output disabled
  xscreensaver: 15:14:56:    3/0: 1280x800+0+0 (DP1) -- output disabled
  xscreensaver: 15:14:56: selecting RANDR events
  xscreensaver: 15:14:56: not using XInputExtension.
  xscreensaver: 15:14:56: consulting /proc/interrupts for keyboard activity.
  xscreensaver: 15:14:56: 0: visual 0x21 (TrueColor,   depth: 24, cmap: default)
  xscreensaver: 15:14:56: 0: saver window is 0x800001.
  xscreensaver: 15:14:56: selecting events on extant windows... done.

I don't know why Xinerama thinks that the resolution is different,
but it gets ignored anyway. The xwininfo of the root window while
the screensaver is showing is, and it seems correct…

  xwininfo: Window id: 0x800008 "screensaver"

    Absolute upper-left X:  0
    Absolute upper-left Y:  0
    Relative upper-left X:  0
    Relative upper-left Y:  0
    Width: 1280
    Height: 800
    Depth: 24
    Visual: 0x21
    Visual Class: TrueColor
    Border width: 0
    Class: InputOutput
    Colormap: 0x800007 (installed)
    Bit Gravity State: ForgetGravity
    Window Gravity State: NorthWestGravity
    Backing Store State: NotUseful
    Save Under State: no
    Map State: IsViewable
    Override Redirect State: yes
    Corners:  +0+0  -0+0  -0-0  +0-0
    -geometry 1280x800+0+0

-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 3.5-trunk-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_NZ, LC_CTYPE=en_NZ.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages xscreensaver-gl depends on:
ii  libc6                     2.13-35
ii  libgdk-pixbuf2.0-0        2.26.4-2
ii  libgl1-mesa-glx [libgl1]  8.0.5-1
ii  libglib2.0-0              2.34.2-1
ii  libglu1-mesa [libglu1]    8.0.5-1
ii  libice6                   2:1.0.8-2
ii  libsm6                    2:1.2.1-2
ii  libx11-6                  2:1.5.0-1
ii  libxext6                  2:1.3.1-2
ii  libxmu6                   2:1.1.1-1
ii  libxpm4                   1:3.5.10-1
ii  libxt6                    1:1.1.3-1
ii  libxxf86vm1               1:1.1.2-1

xscreensaver-gl recommends no packages.

Versions of packages xscreensaver-gl suggests:
ii  xscreensaver  5.15-3

-- no debconf information

-- 
 .''`.   martin f. krafft <madduck@d.o>      Related projects:
: :'  :  proud Debian developer               http://debiansystem.info
`. `'`   http://people.debian.org/~madduck    http://vcs-pkg.org
  `-  Debian - when you have better things to do than fixing systems

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