Hi Randall. It's fantastic to see someone working on the
OpenGl parts. Every thought of enabling glFog? I've
wanted this function for years because linear black
fog (depth cuing)  is a pretty essential feature for
any molecular modeling program. I've looked at some of the
source code,  and will make a serious attempt at it soon,
but you may have already thought about it. It would seem like
a natural for enviro-viz uses.

Richard

On Saturday, January 26, 2002, at 09:51 AM, Randall Hopper wrote:

[EMAIL PROTECTED]:
 |Add translucent texturing with alpha blending support to the OpenGL
 |hardware rendering back-end.

Here's a DX screen shot of a 3D chopper model (borrowed an SGI Performer
demo) to give you a feel for what DX can do:

     http://home.nc.rr.com/rhh/TMP/copter.gif

Each of the rotor blades are actually textured rectangular polygons that
obscure most of the vehicle if rendered opaquely. But with alpha blending, depth sorting, and mipmapping, they blend pretty well with the vehicle and
the background.

I have more enviro-vis uses in mind for this feature, but the chopper model
was a good test case.

Randy

--
Randall Hopper
[EMAIL PROTECTED]

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