[gl4java-usergroup] [OGL]: Clipping problem

[Max G. <gi...@li...>]

Hi, fellows!

This is an OpenGL - related problem I think so it's kind off topic
here... but I hope some of you will know the answer.

I am curious what is the source of the problem that when I have a
polygon that lies partially outside the screen, it's not clipped
properly. In fact, it isn't clipped at all. It's either clamped to the
edge of the window (so, say, if it's a line that should go outside
viewport, it is not disappearing but becomes line parallel to the
viewport's border) or it disappears at all when portion of it goes
outside viewport.

Maybe it's a matter of configuring something but I don't have even the
slightest idea where to look for the answer.

I think that screenshots will tell you more :-) One is zoomed out model,
that is drawn correctly. Second one is the same model zoomed in (changed
FOV) showing artifacts.

I hope it's not the 'proper' behavior, I'd like to avoid doing custom
viewport clipping :-)

Thanks for any suggestions,
Max


--
Max Gilead (gi...@li...) http://3d.linart.krakow.pl/OfficinaArtificialis
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