In article <396353B7.B7CBD686@mitre.org>, xan### [at] mitreorg wrote:

> The Moray plugin handles volumetrics...

How does the method it uses compare to media methods 1, 2, and 3? I mean 
the algorithm itself, as well as the results.


> Polyray still has features that the baseline POV-Ray doesn't
> accomodate.  Some things that come to mind:
...snip...
> Mega-POV seems to provide for most of the things that are in Polyray
> that are missing from POV-Ray.  It's taken a while to get there though.

If I understand these correctly, the following are available in a POV 
version, though not necessarily in the official version or MegaPOV:

     - Direct output of zbuffer values
        (MegaPOV, as a post_process filter)
     - General functions to describe object shapes
       [Both implicit and parametric]
        (MegaPOV, as in the isosurface and parametric shapes)
     - General functions for texture components
        (MegaPOV, isosurface funtions can be used as patterns, which is 
close to this. There is also someone working on a shader patch)
     - Multiple microfacet models
        (MegaPOV has a blinn model alongside the phong and specular 
models, does that count?)
     - Lens flares
        (POV-Ray plugins exist for this for the official version)
     - Particle systems
        (Check my web page...:-) For obvious reasons, I am very 
interested in the particle-system capabilities of PolyRay. I have never 
used it, was there ever a Mac or platform independant version?)
     - U/V coordinates for texturing
        (MegaPOV...)
     - Static (cross frame) variables
        (MegaPOV has persistent variables too.)

-- 
Christopher James Huff - Personal e-mail: chr### [at] maccom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://homepage.mac.com/chrishuff/
TAG Web page: http://tag.povray.org/

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