MantisBT - VTK
View Issue Details
IDProjectCategoryView StatusDate SubmittedLast Update
0007236VTK(No Category)public2008-06-25 04:182013-04-05 19:57
ReporterJulian Ibarz 
Assigned ToDavid Cole 
PrioritynormalSeveritymajorReproducibilityalways
StatusclosedResolutionfixed 
PlatformOSOS Version
Product Version 
Target VersionFixed in Version 
Project
Type
Summary0007236: vtkOpenGLRenderWindow::SetRGBACharPixelData overwrite into the z-buffer
DescriptionWhen using vtkInteractorStyleRubberBandHelper3D (see example
attached) the z-buffer is set entirely to the value 0.

The reason is that vtkInteractorStyleRubberBandHelper3D use
vtkOpenGLRenderWindow::SetRGBACharPixelData which do not only modify
color as expected but also zbuffer. The write on z-buffer and the z-test
must be desactivated (to be sure to overwrite on the color buffer) using :

glDepthMask(GL_FALSE);
 glDisable(GL_DEPTH_TEST);

I made a patch that fix this problem adding this two lines on the begin of the method and their opposites on the end.

Best Regards.
Steps To Reproduce
Additional Information
TagsNo tags attached.
Relationships
Attached Filespatch zbuffer.patch (831) 2008-06-25 04:18
https://www.vtk.org/Bug/file/6559/zbuffer.patch
? BugZBuffer.java (3,542) 2008-06-25 04:19
https://www.vtk.org/Bug/file/6560/BugZBuffer.java
Issue History
Date ModifiedUsernameFieldChange
2008-06-25 04:18Julian IbarzNew Issue
2008-06-25 04:18Julian IbarzFile Added: zbuffer.patch
2008-06-25 04:19Julian IbarzFile Added: BugZBuffer.java
2008-06-25 10:16Dave DeMarleNote Added: 0012522
2008-08-12 14:34David ColeStatusbacklog => tabled
2008-08-12 14:34David ColeAssigned To => David Cole
2008-08-12 14:35David ColeStatustabled => @80@
2008-08-12 14:35David ColeResolutionopen => fixed
2008-08-12 14:35David ColeNote Added: 0012992
2011-06-16 13:11Zack GalbreathCategory => (No Category)
2013-04-05 19:57Berk GeveciStatuscustomer review => closed

Notes
(0012522)
Dave DeMarle   
2008-06-25 10:16   
Applied patch.

[kalimdor:ParaView/develPV3/ParaView3] demarle% cvs commit -m "BUG: Don't clear z buffer during an area pick for consistancy with point pick. See bug 7236. Thanks: Julian Ibarz for the patch." VTK/Rendering/vtkOpenGLRenderWindow.cxx
Commit to directory "ParaView3/VTK/Rendering" lies in external project VTK
/cvsroot/ParaView3/ParaView3/VTK/Rendering/vtkOpenGLRenderWindow.cxx,v <-- VTK/Rendering/vtkOpenGLRenderWindow.cxx
new revision: 1.98; previous revision: 1.97

Watching dashboards now...
(0012992)
David Cole   
2008-08-12 14:35   
Merged to VTK-5-2 also:

    /cvsroot/VTK/VTK/Rendering/vtkOpenGLRenderWindow.cxx,v <-- Rendering/vtkOpenGLRenderWindow.cxx
    new revision: 1.95.2.2; previous revision: 1.95.2.1