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Adjust VBO vertex alphas globally
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Herman
Dec 21, 2012, 4:23:28 PM12/21/12
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Hi,
I have some large 3D XYZ point clouds, often containing 10 -20M points rendered using a VBO (as GL_POINTS).
Is it possible to change the alpha value of every point in the VBO simultaneously without looping through all the points?
I tried using CUDA to prevent transfering the VBO to the host and while it works, it isn't as fast as I would like (which may be a result of not optimizing my CUDA code properly).
Hopefully there is a more straightforward method.
Thanks!!
I have some large 3D XYZ point clouds, often containing 10 -20M points rendered using a VBO (as GL_POINTS).
Is it possible to change the alpha value of every point in the VBO simultaneously without looping through all the points?
I tried using CUDA to prevent transfering the VBO to the host and while it works, it isn't as fast as I would like (which may be a result of not optimizing my CUDA code properly).
Hopefully there is a more straightforward method.
Thanks!!
Stephane Bertout
Feb 28, 2013, 9:47:36 PM2/28/13
to
Do you use a glsl shader to render your points ?
Or the fixed pipeline ?
Or the fixed pipeline ?
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