[vtkusers] vtkOpenGLRenderWindow::GetFrontBuffer throw system access violation when using vtkCaptionWidget

[Liu_tj]

Hi,David,

These caption widgets are used for 3d model text annotation.

My code architecture is as follow:

Dicom3DVolumeRenderer class (derived from C# UserControl) defines a RenderWindowControl, calls TextAnnocation class which is responsible for generate the caption widget for 3d model.

UserControl_Unloaded() is added for Dicom3DVolumeRenderer to remove all these widgets. But the crash happened before this method is called.

Thanks





在2016-09-26，"David Cole" <DLRdave at aol.com> 写道： -----原始邮件-----
发件人:"David Cole" <DLRdave at aol.com>
发送时间:2016年09月26日 星期一
收件人:"Liu_tj" <tjlp at netease.com>
抄送:"vtkusers" <vtkusers at vtk.org>
主题:Re: [vtkusers] vtkOpenGLRenderWindow::GetFrontBuffer throw system access violation when using vtkCaptionWidget


Try removing all your caption widgets from your list as the window is closing.

David



On Sep 25, 2016, at 12:25 PM, Liu_tj <tjlp at netease.com> wrote:


Hi,


I am using Activiz .NET 7.1. In my application, I use a C# List to store the vtkCaptionWidget objects. When the application is closed, then system access violation exception is thrown. In Visual Stuido debugger, no call stack can be tracked. Then I used windbg to debug the application. Windbg show below message:


** ERROR: Symbol file could not be found.  Defaulted to export symbols for C:\Personal\Code\Dev\Chaos3D.UI.Application.FE\bin\Debug\vtkInteractionWidgets-7.1.dll -
vtkRenderingOpenGL_7_1!vtkOpenGLRenderWindow::GetFrontBuffer+0x1b51ce:
00007ff9`20d1b50c 488b00          mov     rax,qword ptr [rax] ds:00000000`00000000=????????????????


The call stack is:
vtkRenderingOpenGL_7_1!vtkOpenGLRenderWindow::GetFrontBuffer+0x1b51ce
vtkInteractionWidgets_7_1!vtkBalloonWidget::vtkBalloonWidget+0x98b7d
vtkRenderingCore_7_1!vtkTransformInterpolator::InterpolateTransform+0x150ba9
vtkRenderingCore_7_1!vtkTransformInterpolator::InterpolateTransform+0x150f73
vtkCommonCore_7_1!vtkAnimationCue::Finalize+0x26ed1f
vtkCommonCore_7_1!vtkAnimationCue::Finalize+0x44c356
vtkCommonCore_7_1!vtkAnimationCue::Finalize+0x44ca96
vtkCommonCore_7_1!vtkAnimationCue::Finalize+0x44d3cb
vtkCommonCore_7_1!vtkAnimationCue::Finalize+0x44a082
vtkRenderingCore_7_1!vtkTransformInterpolator::InterpolateTransform+0x20c52b
vtkRenderingCore_7_1!vtkTransformInterpolator::InterpolateTransform+0x2069c2
Kitware_VTK_vtkRenderingCore_Unmanaged!vtkColorTransferFunction_GetIndexedColor_35+0x4c844


What might be the problem? What I can guess is it is about some unmanaged VTK resource release issue.


Thanks.
Liu Peng





 

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