Re: transparency & specularity

[James W. W. <os...@jw...>]

On Mar 28, 2004, at 1:11 AM, Frank C wrote:

> It could be that the specular highlights you see in old builds may be  
> an errant state left over from some solid geometry, rather than  
> specular settings specific to the transparent geometry.

I think you're right.  Apparently Quesa doesn't really have any  
provision for specular highlights on transparent material.  I found a  
hint about how to do it:  
<http://www.opengl.org/resources/faq/technical/ 
transparency.htm#blen0030>

I now have some code that renders shiny transparent stuff fairly  
nicely, but I wonder whether it should be an option, since there is a  
cost.  In a quick test in Geom Test, the frame rate went from about 355  
FPS down to 325 FPS when I added the extra shininess processing.  I  
could make it a renderer option, like the depth of the depth buffer.   
Opinions, anyone?
--
<http://www.jwwalker.com/>