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IDProjectCategoryView StatusDate SubmittedLast Update
0015765VTK(No Category)public2015-10-09 11:542016-08-12 09:55
ReporterLuc Habert 
Assigned ToSankhesh Jhaveri 
PrioritynormalSeverityminorReproducibilityhave not tried
StatusclosedResolutionmoved 
PlatformOSOS Version
Product Version 
Target VersionFixed in Version 
Summary0015765: OpenGL2: context clashes
DescriptionWhen an actor is removed from a renderer, the renderer calls the actor's ReleaseGraphicsResources which ends up deleting array objects whose opengl handles are context-specific. Therefore, the window should be made current beforehand, otherwise another window's objects will be affected.

AFAIK, the documentation does not require calling MakeCurrent before removing an actor. I think it should either be made explicit, or RemoveViewProp should call MakeCurrent itself. Ideally, the previous current context should be restored upon exiting RemoveViewProp (*).

Another instance of the same problem: calling vtkWin32OpenGLRenderWindow::Finalize will destroy the context. If the ReleaseGraphicsResources haven't been called first, they will when called affect an unintended context.

(*) BTW: MakeCurrent is called from some places deep in the code (eg vtkWindowToImageFilter, vtkTextureObject::ReleaseGraphicsResources). I believe they should restore the previous context, or all hell could break loose in corner cases, like a vtkWindowToImageFilter used as input to a mapper in a different context.
TagsNo tags attached.
ProjectTBD
Typeincorrect functionality
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  Notes
(0035276)
Luc Habert (reporter)
2015-10-12 14:35

 > calling vtkWin32OpenGLRenderWindow::Finalize will destroy the context. If the ReleaseGraphicsResources haven't been called first, they will when called affect an unintended context

My bad, graphics releases are actually released after a make current during this call.
(0036240)
Sankhesh Jhaveri (manager)
2016-07-06 16:40

 The following merge request fixes the issue:

https://gitlab.kitware.com/vtk/vtk/merge_requests/1636 [^]
(0037421)
Kitware Robot (administrator)
2016-08-12 09:55

 Resolving issue as `moved`.

This issue tracker is no longer used. Further discussion of this issue may take place in the current VTK Issues page linked in the banner at the top of this page.

 Issue History
Date Modified Username Field Change
2015-10-09 11:54 Luc Habert New Issue
2015-10-12 14:35 Luc Habert Note Added: 0035276
2016-07-06 16:40 Sankhesh Jhaveri Assigned To => Sankhesh Jhaveri
2016-07-06 16:40 Sankhesh Jhaveri Note Added: 0036240
2016-07-06 16:40 Sankhesh Jhaveri Status backlog => gerrit review
2016-08-12 09:55 Kitware Robot Note Added: 0037421
2016-08-12 09:55 Kitware Robot Status gerrit review => closed
2016-08-12 09:55 Kitware Robot Resolution open => moved

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