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D3D 7 - no overdraw

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How do I keep Direct3D from overwriting a pixel that''s already on the screen without regard to the z-buffer? So regardless of whether or not the second pixel is in front of or behind the first it won''t be drawn. Ben http://therabbithole.redback.inficad.com

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I dont know if or how this works. Couldnt you write into the zbuffer data ? Change the z of that pixel to the smallest z distance, and then rely on zbuffering to leave that pixel unchanged.

If I am correct, the zbuffer is also a surface, so you could prolly just lock it and write to it.

Edited by - Diodor on May 5, 2001 7:38:29 AM

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