Brian, > A GPU solution is great for the rendering, but it doesn't support all the other things on the cpu side that need to know about the ocean.
Agreed. However if that number of CPU items is limited in terms of sample points, then the GPU/CPU tradeoff still can favour the GPU i.e. full ocean FFT on GPU, limited CPU summations for small local grids. (That being said, my initial experience is that this number has to be pretty small in order to make it worth sending the FFT GPU wards. ) For ships, we often use RAO methods for determining ship motion, which can then be a separate activity from the rendering - this does leave an all GPU solution still attractive. I would suggest that an all GPU FFT would just be one in a selection of possible ocean surface techniques. An architecture that supports many such techniques would be a good goal for this kind of project ! David
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