Hi Phillip,
Hi,
I'm using shaders to do some pre computations for a realtime radar simulation.
(Some further processing is done with CUDA) The delta distance is required for
the calculation of the doppler effect.
So yes, I guess I'm using shaders in a weird way. Unfortunately it would be
very difficult do migrate to CUDA, because that would require me to do all
graphics calculations by myself in the cuda kernel (Z test etc.)
If you only need the movement towards/away from you, you can use the
previous frames depth and perform difference computation based on the
difference of the linear depth.
So, to get back to my original question, is there any way to get a current
Billboards modelMatrix? How do I use billboard->computeMatrix() properly?
I'd simply pass the view matrix inverse (pre frame) and calculate the
modelmatrix via inverse_view * model_view_matrix.
Cheers
Sebastian
Thank you!
Cheers,
Philipp
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=67946#67946
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