Re: transparency (and draw callbacks)

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Scott McMillan (scott++at++ht.com)
Thu, 25 Jul 1996 14:06:23 -0400 (EDT)

This sounds like the same problems I have been having....see current
thread about "IV files and transparency"....so far nothing has helped
though. What HW are you working with?

I have tried to set the transparency to PFTR_NO_OCCLUDE|PFTR_BLEND_ALPHA with
no luck, and I don't think the glDisable(GL_DEPTH_TEST) call in the draw will
work because I always have a solid object partially occluding the trasparent
objects.

My application: sticking needles into anatomical models where the needle is
solid the skin is very transparent and the interior anatomy is varying
degrees of transparency. I can move the camera around to get different
views, so depth order is not constant.

Regards,
scott

-- 
  Scott McMillan   |       HT Medical, Inc.      | Developing virtual environ-
   scott++at++ht.com    |      http://www.ht.com      | ment medical and surgical
 Ph: 301-984-3706  | 6001 Montrose Rd., Ste. 902 | simulations and surgery
Fax: 301-984-2104  |     Rockville, MD 20852     | simulation creation tools.


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