Re: Importance sampling and sharp shadows in IBL

Date : Fri, 20 Apr 2007 08:43:43 +0200
To : XSI(at)Softimage.COM
From : André Adam <a_adam(at)49games.de>
Subject : Re: Importance sampling and sharp shadows in IBL
Would the Create Light Rig From Image tool be an option for your scenario? I don't think it would get you the whole way, but it could make a reasonable starting point.

   -André


Chris Johnson wrote:
> I don't see the point of using an HDR image to create sharp shadows. Ray tracing lights are made just for that.

Your using the HDR Map to tell where the shadows should be coming from in a real world scenario using the intensity of the image to calculate the intensity of the shadow as opposed to having to use a light and guesstimating where it should be.

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