Gordon Tomlinson (gordon++at++apollo13.demon.co.uk)
Wed, 29 Apr 1998 16:48:28 GMT
Try running your program in Single processor mode
and see if it works, is it does then it is the may be the
bug in performer that screws Projects lights.
( Should be fixed in PF2.2 was still broken in P2.1)
TTFN
Gordon.
On Mon, 27 Apr 1998 20:28:03 +0200 (MET DST), you wrote:
>Hello pfUsers,
>
>I try to get shadows with Iris Performer 2.0 on an Onyx Re2 with
>IRISGL.
>
>I have used shadows.c as a start but has found that there are a few
>problems. I have made a terrain with a couple of cubes on it.
>
>You can find this text with a couple of pictures at the following URL
>
>http://vtd.fel.tno.nl/~fveraart/shadow/problem.html
>
>In the following pictures the small green cube is the position of the
>lightsource.
>On the terrrain are a few large red cubes with a small green cube next
>to it. The large terrain square is 80x80 meters and I have used a shadow map
>size of 512 pixels.
>
>1)
>For a setting off the light I see that the small green cubes don't
>cast any shadow.
>
>2)
>Depending on the distance of the large cube to the light the geometry
>that is in shadow
>is further away from the object. All of the small green cubes should
>be in shadow.
>
>3)
>The objects that are in shadow are not lit with the ambient lighting
>term. They are drawn black.
>
>4)
>The back side of the cubes are not in shadow.
>
>If anyone can help me solve these problems?
>
>Mario Veraart
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Gordon Tomlinson
System Manager
PERA VR
Technology Centre
Nottingham Road
Melton Mowbray
Leicestershire
LE13 0PB
U.K.
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