Re: Playing video/movies on texture map

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Simon Mills (simon++at++wgs.estec.esa.nl)
Wed, 09 Sep 1998 17:54:06 +0200

Roland Banks wrote:
> I read in some of the recent mails about displaying a movie/real-time
> video feed on a polygon in performer. Has anyone done this, and how
> easy is this to achieve. Initially I would just like to play movie
> files, but later perhaps use the DIVO option for a live feed.

Yes, we have done this. The best place to start is the Performer demo in

/usr/share/Performer/src/pguide/libpf/C/movietex.c

which gives you the basics. Beware that it uses OpenGL calls. It took us
quite some time to get these calls right since unlike the demo we had to
combine it with other normally textured objects and we kept getting
textures corrupted.

Another thing to notice is that it reduces the frame rate, as can be
expected there is more overhead in applying live video as texture than a
static image. Also, if I remember rightly, you are limited in the
min/mag filters allowed.

Hope it helps,
Simon
________________________________________________________________________

Simon C. Mills
Silicon Worlds S.A.
c/o Modelling & Simulation Section (TOS-EMM) Tel: +31 (0)71 565 3725
European Space Agency (ESA/ESTEC) Fax: +31 (0)71 565 5419
Postbus 299, 2200AG Noordwijk e-mail: simon++at++wgs.estec.esa.nl
The Netherlands http://www.estec.esa.nl/wmwww/EMM
________________________________________________________________________

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