[vtkusers] volume rendering speed

[Lisa Avila]

Hello Jesse,

Did you try vtkFixedPointVolumeRayCastMapper? What about 
vtkVolumeTextureMapper3D? The first is definitely faster than 
vtkVolumeRayCastMapper, and the second may or may not be faster depending 
on how much 3D texture mapping support your card has.

Lisa


At 02:19 PM 10/11/2005, Jesse Corrington wrote:
>I am trying to render volumes that are around 350 X 350 X 500 with 
>VTK.  The hardware i am using is 1 gb ram, p4 3.2 ghz, and a geforce fx 
>5900 128 mb.
>to improve speed i have set interpolation to nearest, increased the sample 
>distance, and used vtkImageShrink3D to downsize the data.  I am using a 
>ray cast mapper, because the 2d texture mapper was even slower.  I am 
>still not seeing the results i was hoping for.  Is there anyway i can 
>increase speed and not kill the quality.  It seems that when i do these 
>renderings using the volview trial, they look nicer and are faster.  Does 
>volview use a proprietary volume rendering technique?  should i maybe look 
>into getting a volumepro board?
>
>Thanks
>Jesse Corrington
>
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