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Alain <kua### [at] videotron ca> wrote:
> >
> If you are using that model, you can use a lower resolution, highly
> blured, version of the light probe for the radiosity part.
> But, you don't need to use that method. A single sphere is very good.
> Generaly, if the light probe is to bright for the radiosity, then, it's
> also probably to bright for the reflections. I've seen that case. The
> usual solution is to reduce the global emission value for the probe.
I was actually referring to a typical (or old-school?) LOW-dynamic-range image,
for the sky sphere(s). Plus a single light_source in the scene to mimic the Sun,
or whatever. But for an HDR light probe, your suggestions are good-- no 2nd
sphere required.
And using a low-resolution image for the *radiosity* sky is a useful idea in
either scenario. Other than saving memory, though, I'm wondering if a low-rez
blurry image takes less time-- or fewer computations-- when POV-Ray processes
the radiosity light.... instead of using a higher-rez or more 'detailed' image.
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