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Bug#478960: marked as done (mayavi2: interpolation produces fake transparency effects)

Your message dated Fri, 13 Jun 2008 06:32:14 +0000
with message-id <E1K72pa-0000Ks-3B@ries.debian.org>
and subject line Bug#478880: fixed in mesa 7.0.3-2
has caused the Debian Bug report #478880,
regarding mayavi2: interpolation produces fake transparency effects
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
478880: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=478880
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: mayavi2
Version: 2.1.1-2
Severity: normal


Hi!

I noticed an issue with the interpolation feature.

Please note that I've recently upgraded mayavi2 from version 2.1.1-2 to
version 2.1.1-2+b1, but I've seen the same issue with version 2.1.1-2,
as well.

I've seen the issue happen with basically any data source.
The test case I prepared is based on a simple (legacy) VTK data
file ('fakehurr_merid.vtk') generated by a Fortran program
('gen_fakehurr.f').

  $ tar xzf mayavi2-interpolation-bug-test.tar.gz
  $ ls
  fakehurr_merid.vtk  gen_fakehurr.f  mayavi2-interpolation-bug-test.tar.gz
  $ mayavi2 -d fakehurr_merid.vtk

The main window shows up, with a data source already loaded.

 * for menus, select Visualize -> Modules -> Surface
 * in the MayaVi pane, double-click on Surface
 * in the dialog window, check Interpolate scalars before mapping
 * click on the OK button

A nice visualization is shown, with very smooth colored areas.

 * in the TVTK Scene 1 pane, click on the Obtain an isometric view button

There's an area on the left where the interpolation seems to produce
a strange fake transparency effect (as shown in the attached PNG image).
Disabling the interpolation makes this defect vanish (but produces a
less convincing visualization).

What's wrong?
I think this is a bug.



-- System Information:
Debian Release: lenny/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.24-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages mayavi2 depends on:
ii  libc6                        2.7-10      GNU C Library: Shared libraries
ii  python                       2.5.2-1     An interactive high-level object-o
ii  python-central               0.6.6       register and build utility for Pyt
ii  python-enthought-traits      2.0.4-2     Manifest typing and reactive progr
ii  python-enthought-traits-ui   2.0.4-2     User interface related modules for
ii  python-numpy                 1:1.0.4-7   Numerical Python adds a fast array
ii  python-pkg-resources         0.6c8-3     Package Discovery and Resource Acc
ii  python-vtk                   5.0.4-1+b1  Python bindings for VTK
ii  python-wxgtk2.6              2.6.3.2.2-2 wxWidgets Cross-platform C++ GUI t
ii  python2.5                    2.5.2-3     An interactive high-level object-o

mayavi2 recommends no packages.

-- no debconf information

Attachment: mayavi2-interpolation-bug-test.tar.gz
Description: GNU Zip compressed data

Attachment: foo.png
Description: PNG image


--- End Message ---
--- Begin Message --- 
Source: mesa
Source-Version: 7.0.3-2

We believe that the bug you reported is fixed in the latest version of
mesa, which is due to be installed in the Debian FTP archive:

libgl1-mesa-dev_7.0.3-2_all.deb
  to pool/main/m/mesa/libgl1-mesa-dev_7.0.3-2_all.deb
libgl1-mesa-dri-dbg_7.0.3-2_i386.deb
  to pool/main/m/mesa/libgl1-mesa-dri-dbg_7.0.3-2_i386.deb
libgl1-mesa-dri_7.0.3-2_i386.deb
  to pool/main/m/mesa/libgl1-mesa-dri_7.0.3-2_i386.deb
libgl1-mesa-glx-dbg_7.0.3-2_i386.deb
  to pool/main/m/mesa/libgl1-mesa-glx-dbg_7.0.3-2_i386.deb
libgl1-mesa-glx_7.0.3-2_i386.deb
  to pool/main/m/mesa/libgl1-mesa-glx_7.0.3-2_i386.deb
libgl1-mesa-swx11-dbg_7.0.3-2_i386.deb
  to pool/main/m/mesa/libgl1-mesa-swx11-dbg_7.0.3-2_i386.deb
libgl1-mesa-swx11-dev_7.0.3-2_i386.deb
  to pool/main/m/mesa/libgl1-mesa-swx11-dev_7.0.3-2_i386.deb
libgl1-mesa-swx11-i686_7.0.3-2_i386.deb
  to pool/main/m/mesa/libgl1-mesa-swx11-i686_7.0.3-2_i386.deb
libgl1-mesa-swx11_7.0.3-2_i386.deb
  to pool/main/m/mesa/libgl1-mesa-swx11_7.0.3-2_i386.deb
libglu1-mesa-dev_7.0.3-2_i386.deb
  to pool/main/m/mesa/libglu1-mesa-dev_7.0.3-2_i386.deb
libglu1-mesa_7.0.3-2_i386.deb
  to pool/main/m/mesa/libglu1-mesa_7.0.3-2_i386.deb
libglw1-mesa-dev_7.0.3-2_i386.deb
  to pool/main/m/mesa/libglw1-mesa-dev_7.0.3-2_i386.deb
libglw1-mesa_7.0.3-2_i386.deb
  to pool/main/m/mesa/libglw1-mesa_7.0.3-2_i386.deb
libosmesa6-dev_7.0.3-2_i386.deb
  to pool/main/m/mesa/libosmesa6-dev_7.0.3-2_i386.deb
libosmesa6_7.0.3-2_i386.deb
  to pool/main/m/mesa/libosmesa6_7.0.3-2_i386.deb
mesa-common-dev_7.0.3-2_all.deb
  to pool/main/m/mesa/mesa-common-dev_7.0.3-2_all.deb
mesa-swx11-source_7.0.3-2_all.deb
  to pool/main/m/mesa/mesa-swx11-source_7.0.3-2_all.deb
mesa-utils_7.0.3-2_i386.deb
  to pool/main/m/mesa/mesa-utils_7.0.3-2_i386.deb
mesa_7.0.3-2.diff.gz
  to pool/main/m/mesa/mesa_7.0.3-2.diff.gz
mesa_7.0.3-2.dsc
  to pool/main/m/mesa/mesa_7.0.3-2.dsc



A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 478880@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Brice Goglin <bgoglin@debian.org> (supplier of updated mesa package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@debian.org)


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Format: 1.8
Date: Fri, 13 Jun 2008 06:53:29 +0200
Source: mesa
Binary: libgl1-mesa-swx11 libgl1-mesa-swx11-dbg libgl1-mesa-swx11-i686 libgl1-mesa-swx11-dev libgl1-mesa-glx libgl1-mesa-glx-dbg libgl1-mesa-dri libgl1-mesa-dri-dbg libgl1-mesa-dev mesa-common-dev libosmesa6 libosmesa6-dev libglu1-mesa libglu1-mesa-dev libglw1-mesa libglw1-mesa-dev mesa-swx11-source mesa-utils
Architecture: source all i386
Version: 7.0.3-2
Distribution: unstable
Urgency: low
Maintainer: Debian X Strike Force <debian-x@lists.debian.org>
Changed-By: Brice Goglin <bgoglin@debian.org>
Description: 
 libgl1-mesa-dev - A free implementation of the OpenGL API -- GLX development files
 libgl1-mesa-dri - A free implementation of the OpenGL API -- DRI modules
 libgl1-mesa-dri-dbg - Debugging symbols for the Mesa DRI modules
 libgl1-mesa-glx - A free implementation of the OpenGL API -- GLX runtime
 libgl1-mesa-glx-dbg - Debugging symbols for the Mesa GLX runtime
 libgl1-mesa-swx11 - A free implementation of the OpenGL API -- runtime
 libgl1-mesa-swx11-dbg - A free implementation of the OpenGL API -- debugging symbols
 libgl1-mesa-swx11-dev - A free implementation of the OpenGL API -- development files
 libgl1-mesa-swx11-i686 - Mesa OpenGL runtime [i686 optimized]
 libglu1-mesa - The OpenGL utility library (GLU)
 libglu1-mesa-dev - The OpenGL utility library -- development files
 libglw1-mesa - A free implementation of the OpenGL API -- runtime
 libglw1-mesa-dev - A free implementation of the OpenGL API -- development files
 libosmesa6 - Mesa Off-screen rendering extension
 libosmesa6-dev - Mesa Off-screen rendering extension -- development files
 mesa-common-dev - Developer documentation for Mesa
 mesa-swx11-source - Mesa software rasteriser source -- development files
 mesa-utils - Miscellaneous Mesa GL utilities
Closes: 440868 451339 467319 478880
Changes: 
 mesa (7.0.3-2) unstable; urgency=low
 .
   * Pull from mesa_7_0_branch (03447de3).
   * Set right cliprects for the current draw region on Intel, closes: #467319.
   * Use BRW_TEXCOORDMODE_CLAMP instead of BRW_TEXCOORDMODE_CLAMP_BORDER
     to implement GL_CLAMP on i965, closes: #478880.
   * Fix segment fault with BASE_LEVEL set to 5 for MipMap on i915,
     closes: #451339.
   * Disable low impact fallback on r300 by default, closes: #440868.
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--- End Message ---
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