offcourse it will, tesselation impact on the anti-aliasing and anistrope filtering....... indirect lightning, and reflect............... It was not the case when ATI have release the API cause driver was optimised for it, but as Microsoft have choose a diferent path in DX11............. it's impact it a lot.......... For make it simple, tesselation don't kill the framerate, but the addtion of the filters uppon the surface tesselated do it.......
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