MantisBT - VTK
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IDProjectCategoryView StatusDate SubmittedLast Update
0015838VTK(No Category)public2015-11-18 03:362015-11-23 12:15
ReporterSimon ESNEAULT 
Assigned To 
PrioritynormalSeverityminorReproducibilityhave not tried
StatusclosedResolutionfixed 
PlatformOSOS Version
Product Version6.2.0 
Target VersionFixed in Version 
ProjectTBD
Typeincorrect functionality
Summary0015838: vtkTexturedActor2D's transparent pixel are incorrectly rendered when used with FixedPoint VolumeRendering in the same renderer
DescriptionVTK 6.3/OGL2, Windows/OSX
The problem is visible when trying to render a vtkTextActor, or a vtkTexturedButtonRepresentation2D with a png that contain transparent pixels in the same renderer than a vtkFixedPointVolumeRayCastMapper.
When using a vtkGPUVolumeRayCastMapper, there is no problem

Attached a very simple example that demonstrate that a vtkTextActor AND a vtkTexturedButtonRepresentation2D are not correctly drawn in that case :
- OpenGL1 backend : http://picpaste.com/pics/OGL1-Texture-okay.1447690100.png [^]
- OpenGL2 backend : http://picpaste.com/pics/OGL2-Texture-not-okay.1447690272.png [^]

The transparent pixels seem transformed to white ...

Let me know if any more information are needed, hope that helps !
Simon
Steps To Reproduce
Additional Information
TagsvtkTextActor
Relationships
Attached Fileszip BlurredText.zip (1,823) 2015-11-18 03:36
https://www.vtk.org/Bug/file/9952/BlurredText.zip
Issue History
Date ModifiedUsernameFieldChange
2015-11-18 03:36Simon ESNEAULTNew Issue
2015-11-18 03:36Simon ESNEAULTFile Added: BlurredText.zip
2015-11-18 03:36Simon ESNEAULTTag Attached: vtkTextActor
2015-11-23 12:15Aashish ChaudharyNote Added: 0035484
2015-11-23 12:15Aashish ChaudharyStatusbacklog => closed
2015-11-23 12:15Aashish ChaudharyResolutionopen => fixed

Notes
(0035484)
Aashish Chaudhary   
2015-11-23 12:15   
Fixed in : https://gitlab.kitware.com/vtk/vtk/merge_requests/932 [^]