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rendering multiple triangle fans with one call

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hi! my problem is the following: a have a quadtree lod algorithm, and I want to render multiple quads( so quads with different center point ) within one call, because I use index buffers, and I don''t want my vertices have to be transformed three-five times more than necessary. Is there any way for concatenating triangle fans like described in the ''Concatenating Triangle Strips'' article for strips? I tried to make the quads from strips, not fans; but there was more degenerating triangles than normal, visible ones. if anyone could help me, i''d very thankful.

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