I have a mesh that consists of line lists (pairs of vertices). I would like to create a sphere on the GPU for every even vertex, centered on that vertex. Resolution of the sphere is not immediately important. Would a geometry shader be the way to do it, and if so - how?
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for each vertex generate single quad and render sphere like sprite with it, you would need to have 2 pass rendering in one draw the lines in the other the quads ... if you do not want to add the billboard techniques then add 3 perpendicular quads instead of one per vertex – Spektre May 07 '15 at 08:54