Re: [Plib-users] transparent material with texture ?

[Steve B. <sjb...@ai...>]

Marc Escher wrote:

> By the way, my scene is composed of translucent and opaque objects that
> can intersect each other and I have some problems of drawing order with
> the transparent objects. Is there a way in PLIB to manage that ? Can we
> enable the GL_DEPTH_TEST for the opaque object and disable it for the
> tranparent ones ?

PLIB renders all translucent polygons in no particular order *after* it's
rendered all opaque polygons in no particular order.

We have been discussing a mechanism to do fairly crude range-sorting
of the translucent polygons - but that's never a perfect solution.

Disabling depth testing for translucent objects does not help
the problem - that's a common myth.

You should read my FAQ on the subject (which is not PLIB-specific).

     http://web2.airmail.net/sjbaker1/alpha_sorting.html

The bottom line is that PLIB should allow translucent objects
to interact perfectly with opaque objects regardless.  HOWEVER
when multiple translucent object overlap, PLIB does not get it
right every time.

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