edges not smooth

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Started by guille November 05, 2001 06:59 AM

2 comments, last by guille 22 years, 5 months ago

122

Author

November 05, 2001 06:59 AM

Hi! I would like to know why my objects (Quads and POLYGONS) EDGES are not smooth (at all) when my pointview is far from them. When I am close to them they are perfect. I do not know very well how does it work with the depth buffer, but I think that the problem is there. I am using it for hidden-surface removal. Thanks for any suggestion. Cheers, g

feagle814

122

November 05, 2001 09:59 PM

Define smooth.

Poya

123

November 05, 2001 11:24 PM

If you are talking about what I think you are talking about, then this happens when you set you ''near plane'' too close. Your near plane value should typically be larger then 1. The closer you get to 0, the crappier the far polygons look. They get jagged edges especially when two polys are close and in front of each other.

I think this happens because Z-Buffer is usually 16-bit, and this is not enough precision if your near/far range is too large.But the interesting thing is, changing your far-plane value does not effect the appearance. It''s just the near plane. So try to set it to the largest value possible.

Of course, I maybe completely wrong