[osg-users] HeightField Performance

Chris 'Xenon' Hanson xenon at alphapixel.com
Sat Nov 14 08:59:05 PST 2009


Teodor Hanchevici wrote:
> Hi Chris,
> I will try looking into shaders. I wonder if it creating a 8x8 grid of HeightFields and "glue" them to something so that they move as a single object would solve the problem.
> You mentioned that the data is put into a quad-tree, is it possible to limit the depth of the tree somehow? I am willing to live with this. Anyway there will be some on the fly pre-processing of data, including building quad-trees since 25k x 25k data is common for me.
> Is the quad tree computed in the HeightField or somewhere else? I wonder if it is possible to create a different HeightFiled implementation that yield better performance. Since I am a beginner with OSG, I would appreciate your advice.

  Sort of. You need to look at OSGDEM/VPB and understand what it's doing, even though it
may not exactly fit your needs. They way it does things will probably suggest your
solution better than answering individual questions.

> Thank you!
> Cheers,
> Teodor

-- 
Chris 'Xenon' Hanson, omo sanza lettere                  Xenon AlphaPixel.com
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