More on Projected Texture spotlights....

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Scott McMillan (scott++at++ht.com)
Thu, 24 Oct 1996 12:47:52 -0400 (EDT)

> I am currently working on an iR/OpenGL/Performer 2.2 beta. I don't think it
> is a beta problem, so I will ask here first.
>
> I have a scene that is lit by a pfLight. When I add a spotlight via
> projected textures (following the sample code in shadows.C not including the
> shadow stuff), the spotlight appears, but the original effects of the pfLight
> disappear. Is it possible to have both?
>
> Also, with the spotlight, I get a regular pattern of "speckles" on the
> polygons that are being projected onto anywhere the projected texture is not
> completely white (i.e, r*g*b != 1). Note that this pixel pattern is constant
> with respect to the viewport but the color is equal to any geometry is there.
> Anybody ever seen anything like this and know how to fix it?

Here's some more info, I compiled and ran the same program on a High Impact,
Irix 6.2, Performer 2.0.2. The speckles disappear, but the pfLightSource and
pfLight interaction problems are still present. I seem to remember a
previous discussion related to this...can anyone refresh my memory?

Thanks,
scott

-- 
  Scott McMillan  |       HT Medical, Inc.      | Developing virtual environ-
   scott++at++ht.com   |      http://www.ht.com      | ment medical and surgical
 Ph: 301-984-3706 | 6001 Montrose Rd., Ste. 902 | simulations and surgery
Fax: 301-984-2104 |     Rockville, MD 20852     | simulation creation tools.


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