Radiosity
24-Jan-95 14:25:34
Sb: #3424-Radiosity
Fm: Tim Wilson [Crestline] 76432,1122
To: Charles Blaquiere 76046,1756
Charles,
>>my technique would take longer as the user increases the blurriness.<<
This doesn't sound so good. Surely there's a technique to blur *traced*
reflections that takes less time to render when it's very blurry, and more time
when it's sharp. Eh?
>>It might be interesting to debate whether it would take longer to calculate
several surface para-normals per point, or to simply pre-blur the environment
map.<<
By posing this question, I assume you are referring to my remark to David…
that using a Scanline renderer to generate environment maps for every object in
a scene (to simulate radiosity) could potentially chew up more memory and time
than simply faking radiosity in *Trace* mode. For this, and other reason I've
already laid out, I'd prefer to have reflections blurred in Trace mode, where
both the environment *and other objects* can be handled at once,
automatically… and without any fancy image processing.
Unless Impulse has already made significant headway (that we don't know about)
in developing Imagine's image processing capabilities, I think it might be
easier and faster for them to program the blurring into Trace mode.
-Tim