MantisBT - ParaView
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IDProjectCategoryView StatusDate SubmittedLast Update
0001342ParaView(No Category)public2004-11-10 12:092009-12-09 22:08
ReporterJim Miller 
Assigned ToBerk Geveci 
PrioritynormalSeverityminorReproducibilityalways
StatusclosedResolutionfixed 
PlatformOSOS Version
Product Version 
Target VersionFixed in Version 
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Type
Summary0001342: Grayscale lookup table produces overly quantized display
DescriptionLoading a floating point scalar field and displaying using the grayscale lookup table (with 256 entries in lut) produces a quantized image. Other colormaps produce a smoothly varying field but the grayscale lut overly quantizes the table (looks as though only 20 grayscales are used).

Loading the same data in Paraview 1.4 does not exhibit this problem
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Issue History
Date ModifiedUsernameFieldChange
2009-12-09 14:51Berk GeveciProject@3@ => ParaView
2009-12-09 22:08Berk GeveciStatustabled => closed
2009-12-09 22:08Berk GeveciResolutionopen => fixed
2011-06-16 13:09Zack GalbreathCategory => (No Category)

Notes
(0001690)
Jim Miller   
2004-11-10 12:25   
If I turn off my graphics accelerator, the grayscale lookup work properly on ParaView 1.6 and 1.8.

If my graphics accelerator is on, the grayscale lookup tables produce overly quantized images on Paraview 1.6 and 1.8 BUT PRODUCE THE CORRECT IMAGE WITH Paraview 1.4

Is a non-standard OpenGL being used now for lookup tables?
(0007778)
Berk Geveci   
2007-06-02 09:35   
Can you reproduce this in 3.0?