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strahan

Strange anomaly in my wireframe terrain

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I am seeing an anomaly where the lines connecting the rectangles of my terrain suddenly go hay-wire when I move the camera closer. Anyone seen this type of behaivor before? I have debugged it to hell and my coordinates look correct so I have no idea what to think. Screen shot before I move the camera in: Screen shot after I move the camera in: You will see some lines suddenly go up in the +Y directions. Thanks for your help. [edited by - strahan on January 23, 2004 2:41:04 PM] [edited by - strahan on January 23, 2004 2:41:30 PM] [edited by - strahan on January 23, 2004 2:42:01 PM]

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Yes I''ve seen that on my voodoo5500. When the vertexs meet the side of the screen they ride up and split almost. It''s really weird. I have never found a solution for it all.

~Wave

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Interesting. I tried my other machine and it works. Would this be a bug in DirectX 9 or the video card?

The video card it doesn''t work on is:
ATI 9600 PRO

The video card it does work on is:
ATI Fire GL E1

Both cards say they support DirectX 9.

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I''ve had these bugs before, usually it means bad data. Drawing beyond the end of the vertex buffer, or bad indexes, something like that.

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I think it''s video card dependent. The fillmode wireframe isn''t used often and I don''t think it''s supported very well so we get weird anomolies on diffrent cards.
~Wave

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