[vtkusers] Volume Rendering Update

[Aashish Chaudhary]

Hi All,

Just wanted to let you know that we merged another branch earlier this
morning and that should improve volume rendering shading performance by
upto 300% (results may vary depending on the OS, datatype, and what
features are used and enabled).

If you run into slowness or any other bottleneck, please feel free to
contact us.

Thanks,
Aashish

On Fri, May 29, 2015 at 5:31 PM, Aashish Chaudhary <
aashish.chaudhary at kitware.com> wrote:

> Folks,
>
> We made some recent improvements to VTK volume rendering including fixes
> to related components. Here is a list of those changes:
>
> 1) Now new GPU Volume Mapper respect Interpolation Type (Linear or
> Nearest). Default is Nearest as in the last GPU mapper.
>
> 2) Shading is now twice as fast as before. There will be another branch to
> make it even faster.
>
> 3) Fixed lighting bug (number of lights kept on increasing with change in
> volume property)
>
> 4) Saving and Restoring GL state properly for textures
>
> 5) Bias and Scale are now performed in Shader.
>
> 6) We changed some GL texture format information to support OpenGL 3
> context
>
> 7) Fixed extensions were not reported correctly on GL2 context
>
> 8) Fixed few failing tests specifically on Mesa
>
> 9) Removed VolumeOpenGLNew module as it was not as usable with OpenGL2
> getting ready for primetime
>
> 10)  Added convenience API to SmartVolume Mapper
>
> 11) Cleaned up logic for dealing with context changes in Volume Mapper
>
>
> Please let us know if you have any questions.
>
> Thanks,
>
>
> --
>
>
>
> *| Aashish Chaudhary | Technical Leader         | Kitware Inc.            *
> *| http://www.kitware.com/company/team/chaudhary.html
> <http://www.kitware.com/company/team/chaudhary.html>*
>



-- 



*| Aashish Chaudhary | Technical Leader         | Kitware Inc.            *
*| http://www.kitware.com/company/team/chaudhary.html
<http://www.kitware.com/company/team/chaudhary.html>*
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