RE: [Algorithms] Making an object transparent in openGL

[Martin F. <mf...@ac...>]

I can't remember off the top of my head. (Long time since doing any OGL) 
This isn't really an API specific mailing list but you should be able to
find everything you need on www.opengl.org <http://www.opengl.org> 

-----Original Message-----
From: Ik...@ga... [mailto:Ik...@ga...]
Sent: Wednesday, July 18, 2001 4:38 PM
To: gda...@li...
Subject: [Algorithms] Making an object transparent in openGL



Hi there! 

I would like to make a 3d rendered object transparent acording to a global
factor. Imagine a cube. It is completely black while rendering. Now I set my
material/shader (call it as you whish) to a transparency factor of 0.5 anf
then the cube "bends" with the background image. What openGL calls do I have
to do to make this happen? In a software renderer this sounds pretty simple,
but I dunno how to accomplish this prob in openGL...

Thanx... maybe is a very simple question...