environment mapping in performer

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login IRIX (pere1++at++VIDEO5)
Fri, 8 Nov 1996 14:33:28 -0800

        Hello ,

        I have a little problem with antialiasing.
        Well, I use a image mapping to simulate shadow on a terrain. To do
that,
I use two faceted terrains ( Yes, I know, the number of polygons is twice: if
somebody has another idea?) on each other. On the first one, I map a repeated
texture, on the second I map a image with an alpha mask. This allows me to
pertub my repeated texture.
        This method works well when I don't use antialiasing. In this case,
antialiasing seems to modify the number of bits of alpha channel (I 'm sure
that there are 8 bits at the beginning ).

        If somebody could help me...

Thanks a lot. I am not a genius.

PS: where could I find some sample frames of what you are doing with Performer,
guys? If you want, I will show you some snapshots of my application.
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