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0012703

VTK

(No Category)

public

2011-11-03 10:26

2013-07-22 20:48

Reporter

CJ Bourn

Assigned To

Dave DeMarle

Priority

normal

Severity

minor

Reproducibility

have not tried

Status

closed

Resolution

fixed

Platform

OS Version

Product Version

5.8.0

Target Version

Fixed in Version

Summary

0012703: vtkOpenGLGPUVolumeRayCastMapper: Exception in LoadExtensions causes InRender flag to stay set and never render again

Description

In vtkOpenGLGPUVolumeRayCastMapper, if the GL context could not actually be set up, then all the calls to glGetString() will return NULL. These results are then blindly passed to strstr() which results in an exception. This method gets called during Render() which causes the InRender flag of vtkRenderWindow to never be cleared and thus rendering will never occur again. The fix is simple, eg Line 2160:

  const char *gl_version=reinterpret_cast<const char *>(glGetString(GL_VERSION));
  if(gl_version != 0 && strstr(gl_version,"Mesa")!=0)
     ^^^^^^^^^^^^^^^^^^

Tags

No tags attached.

Project

TBD

Type

crash

Attached Files

vtkOpenGLGPUVolumeRayCastMapper.cxx [^] (244,293 bytes) 2011-11-03 10:26

Relationships

Notes
(0031311) Dave DeMarle (administrator) 2013-07-22 20:48	http://review.source.kitware.com/#/c/11727/ [^]

Issue History
Date Modified	Username	Field	Change
2011-11-03 10:26	CJ Bourn	New Issue
2011-11-03 10:26	CJ Bourn	File Added: vtkOpenGLGPUVolumeRayCastMapper.cxx
2013-07-22 20:48	Dave DeMarle	Assigned To	=> Dave DeMarle
2013-07-22 20:48	Dave DeMarle	Status	backlog => todo
2013-07-22 20:48	Dave DeMarle	Status	todo => active development
2013-07-22 20:48	Dave DeMarle	Note Added: 0031311
2013-07-22 20:48	Dave DeMarle	Status	active development => closed
2013-07-22 20:48	Dave DeMarle	Resolution	open => fixed