>>> I'm still mystified (get it?) as to how it manages to render with 
>>> absolutely no visible grain of any kind to it. Even POV-Ray struggles to 
>>> do that given many *days* of rendering time...
>>>
>>> Clearly some kind of trick must be involved.
>>
>> Not really, just utilising the GPU's ability to handle 3D textures and 
>> smooth blending really efficiently.  Don't forget the GPU version is not 
>> scattering light like POV does...
>
> ...GPUs can do 3D texturing now?

They're just a set of 2D textures, fairly simple to implement even if you 
card doesn't specifically support 3D textures.

The hard-ish bit is how to render them, but again you can just write some 
ray-casting code into a pixel-shader that runs in real-time (as I think that 
link I posted explains).

Post a reply to this message