[PD] render into rectangle
IOhannes m zmoelnig
zmoelnig at iem.at
Tue May 30 15:30:06 CEST 2006
marius schebella wrote:
> I need to project a certain rectangle/quadrangle with a videobeamer. It
> is a distorted and non 4:3 area. I wonder if it possible to render the
> gembuffer into such a polygon. The rest of the screen should remain
> black. So I know how to render images and videos into that area, but I
> didn't find an easy solution to texture/snap the whole gemwindow into
> that rectangle. I would like to have some particle effects. the only way
> I can think of is using single buffer mode and pix_snap a buffer, then
> clear it and then texture onto my polygon. Do you have other ideas?
> thank you. marius.
you could do it in double-buffered mode as well if you make sure that
the rectangle to texture on is just before everything else (and you
would probably want a 2nd rectangle that guarantees that the edges
beyond your texture-geo are still black.
render order is important.
More information about the Pd-list