I don''t know how to create the "Write Only" buffer how you call it. I do it the usual way with the type GL_STATIC_DRAW_ARB.
This is also the way it is used in all examples I''ve found. While trying to get it faster, I found out that there is a huge difference between VBO and vertex arrays if I disable the lighting. It seems that this is the bottleneck of the graphics accelerator.
I will continue research this evening, I think I''m on the right way. We will also check the idea to do it with quads / polygons, thanks for the hint.
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with regard to the
