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Subject: 
Re: Why Type 5 Lines?
Newsgroups: 
lugnet.cad.dev
Date: 
Fri, 19 Apr 2002 18:09:27 GMT
Viewed: 
683 times
  
In lugnet.cad.dev, Travis Cobbs wrote:

I understand what you are saying, but it won't happen that way if Z buffer
writing is enabled during the drawing of the transparent surfaces.  The
transparent surfaces aren't really transparent.  They're just blended with
whatever is behind them.  (This is why you get interesting effects if you
don't sort them.)  They look like they are transparent, but if they really
were transparent, then you wouldn't have to sort; you could just draw them
in any order and they would look correct.  The reason they have to be sorted
is that the blending only occurs with whatever is drawn before them.

Cool.  Thanks for taking the time to explain it to me.  I didn't realize
this about opengl.

Steve "please speak slowly and clearly" Bliss



Message is in Reply To:
  Re: Why Type 5 Lines?
 
(...) I understand what you are saying, but it won't happen that way if Z buffer writing is enabled during the drawing of the transparent surfaces. The transparent surfaces aren't really transparent. They're just blended with whatever is behind (...) (22 years ago, 19-Apr-02, to lugnet.cad.dev)

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