On 04/06/2011 03:01 PM, clipka wrote:
> Toying around with an AO-only-patch for the radiosity code.
>
> Render time for the classic recursion_limit 1 radiosity image (#1): 3
> min 12 seconds.
>
> Render time for the AO-only image (#2): 2 min 27 seconds.
>
> The scene is an ideal case for this approach: The sky sphere functions
> as the only light source, with a quite uniform pigment, and the relative
> distance of objects is comparatively uniform. In such an environment,
> single-recursion radiosity can be replaced by an AO-based approach
> (shooting rays only to determine distance of objects, rather than color)
> with virtually no change in visual appearance.
>
> In this text scene, the texturing is still rather simple. To add /any/
> challenge at all, I applied some 10-layer micronormals-based blurred
> reflection to the floor. More complex scenes may show a more pronounced
> speed advantage of the AO-based approach.
>
> While this approach may not work equally well in other environments, I
> guess the idea is worth being pursued further.

The AO shadows look much smoother ... but what I was really interested 
in what what you said about the floor. A layer texture? ... or some 
other voodoo! ;-)

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