Re: VideoTexture in Movietex.c.

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Simon Hui (shui++at++kid.asd.sgi.com)
Fri, 21 Jun 96 04:56:24 -0700

> From: "brainval" <brainval++at++onyx.montesa.es>
> Subject: VideoTexture in Movietex.c.
>
> Now i can compile the movietex.c program with the OpenGL, GLX extensions
> for video. BUT, it still not working !

I was so focused on the issue of needing the patch when I responded to
your mail, that I forgot to note that you would have to load the video
to texture yourself in a callback, because you are on an RE. Sorry about
the confusion.

Here is a summary of the combinations of graphics hardware, IRIX, and
IrisGL/OpenGL that Performer supports video texturing on, and whether
Performer can load the video to texture for you, or if you have to load
it yourself within a callback (RE = RealityEngine, IR = InfiniteReality):

IrisGL
------

RE: IRIX 5.3

        Performer 1.2 - use your own callback
        Performer 2.0 - use your own callback, or Performer
        Performer 2.0.1 - use your own callback, or Performer
        Performer 2.*** - use your own callback, or Performer

IR: IRIX 6.2

        video texturing not supported

OpenGL
------

RE: IRIX 5.3
         
        video texturing not supported

RE: IRIX 5.3 with patch 154 or 918

            Performer 2.0 - use your own callback
        Performer 2.0.1 - use your own callback
        Performer 2.*** - use your own callback, or Performer

IR: IRIX 6.2

        Performer 2.1 - use your own callback, or Performer
         
Where 2.*** denotes an upcoming patch that has yet to be released.

As you can see, in your case, since you have an RE (or RE2), you will
need use a callback; when the patch is released you can have Performer
do the loading for you.

Please note that 5.3 with patch 154 or 918 is intended for development
only; they are not intended for deployment.

> Investigating throught www.sgi.com we have found the "videotex.c v1.7"
> program.

Yes, that is an example of how to do video texturing under OpenGL; you
can use that example if you are using a callback.

simon

simon w. hui iris performer
shui++at++sgi.com advanced systems div
415.933.3244 silicon graphics inc

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