[vtkusers] Texture-mapping based volume rendering

[Weiguang Guan]

Hello Lisa,

Thank you for the info. I download VolView1.3 for Linux, do v2.0 on Linux? 
Does Kitware plan to add the 3D texture mapping based volume rendering 
into VTK release in the future?

Weiguang 

-- 
========================================================
Weiguang Guan, Research Engineer
RHPCS, McMaster University
========================================================
On Wed, 25 Feb 2004, Lisa Avila wrote:

> Hello Weiguang,
> 
> There is an end-user application (VolView) built on top of VTK that has 3D 
> texture mapping support on Windows for some Nvidia and ATI cards - you can 
> find info on it here (http://www.kitware.com/products/volview.html) and 
> download it to test out performance on your system.
> 
> Performance tends to be fairly good - although we do use a few 
> "level-of-detail" tricks to ensure interactive performance (at least 
> several frames per second) for large datasets rendered into large images. 
> In addition, since texture download rates are still awful, we do not render 
> data bigger than can fit in texture memory on the card (automatic 
> downsampling is used) - which often leads to a limit of 256x256x128 when 
> you consider all the "extra" data necessary to produce a shaded image that 
> has transfer functions based on both scalar value and gradient opacity...
> 
> Lisa
> 
> 
> 
> At 10:39 AM 2/25/2004, Weiguang Guan wrote:
> >Hi everyone,
> >
> >Does vtk implement texture mapping based volume rendering which utilizes
> >modern graphics card's 3D texture mapping capability? It could make volume
> >rendering much faster without using special hardware (like VolumePro).
> >Has anyone made a performace comparison of different rendering
> >techniques (in terms of sec or ms on 256 cubic volume)? Thanks.
> >
> >Weiguang
> >
> >--
> >========================================================
> >Weiguang Guan, Research Engineer
> >RHPCS, McMaster University
> >========================================================
> >
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