[vtkusers] Opacity problems

[Daniel Cabrini Hauagge]

On Tue, Feb 26, 2008 at 4:57 PM, Francois Bertel
<francois.bertel at kitware.com> wrote:
> What's the result of the depth peeling / translucent/ OpenGL tests?
>
>  from the root of your VTK build directory, type:
>
>  $ ctest -R "Depth|OpenGL|FBO|Translu|RGBA"
>
>  or better you can submit a partial experimental dashboard by typing:
>
>  $ ctest -D Experimental -R "Depth|OpenGL|FBO|Translu|RGBA"
>

Seems to pass all tests


   Site: altair
   Build name: Linux-c++
Create new tag: 20080226-2006 - Experimental
Start processing tests
Configure project
   Each . represents 1024 bytes of output
    . Size of output: 0K
Build project
   Each symbol represents 1024 bytes of output.
   '!' represents an error and '*' a warning.
    .............. Size of output: 13K
   0 Compiler errors
   0 Compiler warnings
Test project /home/daniel/Desktop/Downloads/VTK_from_cvs/VTK-build
 68/111 Testing LoadOpenGLExtension              Passed
 69/111 Testing TestFBO                          Passed
 76/111 Testing TestTextActorDepthPeeling        Passed
 78/111 Testing TestTextActor3DDepthPeeling      Passed
 79/111 Testing TestTranslucentLUTAlphaBlendin   Passed
 80/111 Testing TestTranslucentLUTDepthPeeling   Passed
 81/111 Testing TestTranslucentLUTTextureAlpha   Passed
 82/111 Testing TestTranslucentLUTTextureDepth   Passed

100% tests passed, 0 tests failed out of 8
Performing coverage
 Cannot find any coverage files. Ignoring Coverage request.
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   Drop site: http://public.kitware.com/cgi-bin/HTTPUploadDartFile.cgi
   Uploaded: /home/daniel/Desktop/Downloads/VTK_from_cvs/VTK-build/Testing/20080226-2006/Build.xml
   Uploaded: /home/daniel/Desktop/Downloads/VTK_from_cvs/VTK-build/Testing/20080226-2006/Configure.xml

   Uploaded: /home/daniel/Desktop/Downloads/VTK_from_cvs/VTK-build/Testing/20080226-2006/Test.xml
   Using HTTP trigger method
   Trigger site: http://public.kitware.com/cgi-bin/Submit-vtk-TestingResults.pl
   Dart server triggered...
   Submission successful

>
>  PS: Keep the discussion on the mailing list, please.
>
>
>
>  Daniel Cabrini Hauagge wrote:
>  > On Tue, Feb 26, 2008 at 4:38 PM, Francois Bertel
>  > <francois.bertel at kitware.com> wrote:
>  >> What's your graphic cards?
>  >
>  > NVidia GeForce 8800 GTX
>  >
>  > OS: Ubuntu 7.10
>  > CPU: AMD Athlon 64 X2 4200
>  >
>  >>
>  >>
>  >>  Daniel Cabrini Hauagge wrote:
>  >>  > Hello,
>  >>  >
>  >>  > I'm relatively new to VTK so please pardon my ignorance. I'm trying to
>  >>  > setup a scene using various overlapping quads with varying
>  >>  > transparency (opacity is determined by the dot product of the plane
>  >>  > normal with the camera's view plane normal). I think my setup is
>  >>  > correct but I'm having trouble with how the transparent quads are
>  >>  > rendered. I've seen many messages in the mailing list complaining
>  >>  > about similar problems and tried the depth peeling technique in the
>  >>  > wiki but didn't get the correct results.
>  >>  >
>  >>  > Here are the results I've obtained
>  >>  > http://www.liv.ic.unicamp.br/~hauagge/vtk_opacity_trouble.pdf
>  >>  >
>  >>  > and here is an example program that illustrates the problem
>  >>  > http://www.liv.ic.unicamp.br/~hauagge/test09_transparencyFromCamera.py
>  >>  >
>  >>  > I'd appreciate any help,
>  >>  >
>  >>
>  >>
>  >>  --
>  >>  François Bertel, PhD  | Kitware Inc. Suite 204
>  >>  1 (518) 371 3971 x113 | 28 Corporate Drive
>  >>                        | Clifton Park NY 12065, USA
>  >>  _______________________________________________
>  >>  This is the private VTK discussion list.
>  >>  Please keep messages on-topic. Check the FAQ at: http://www.vtk.org/Wiki/VTK_FAQ
>  >>  Follow this link to subscribe/unsubscribe:
>  >>  http://www.vtk.org/mailman/listinfo/vtkusers
>  >>
>  >
>  >
>  >
>
>
>  --
>  François Bertel, PhD  | Kitware Inc. Suite 204
>  1 (518) 371 3971 x113 | 28 Corporate Drive
>                        | Clifton Park NY 12065, USA
>  _______________________________________________
>  This is the private VTK discussion list.
>  Please keep messages on-topic. Check the FAQ at: http://www.vtk.org/Wiki/VTK_FAQ
>  Follow this link to subscribe/unsubscribe:
>  http://www.vtk.org/mailman/listinfo/vtkusers
>



-- 
Daniel Cabrini Hauagge
cel: +55 (19) 8194-8480