Re: [Algorithms] Doom lightmaps
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From: Jason Z. <zi...@op...> - 2001-02-26 06:30:54
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Several times during the presentation John Carmack say that the lighting model is completely unified, every surface uses the same code. Also one of the scenes shows a creature coming towards the camera with a light is rotating around the scene and all the shadows are correct. That is the best scene that shows off the lighting system, certainly makes me curious. It is funny you mention the stencil+shadow map method because that is exactly how I do dynamic shadows in my engine. For any object that might move or is extremely small(soda cans, etc) I use a stencil shadow and for everything else I use pre-computed lightmaps. They mesh together quite well, better than I anticipated. - Jason Zisk - nFusion Interactive LLC ----- Original Message ----- From: "Daniel Vogel" <66...@gr...> To: <gda...@li...> Sent: Sunday, February 25, 2001 7:04 PM Subject: RE: [Algorithms] Doom lightmaps > If you look closely you will see that all shadows being cast by moving > lights/ actors are sharp (stencil buffer shadows). The smooth shadows look > like projected textures and you could easily do an effect like a rotating > fan using an animated projective texture or even better using the texture > matrix. > > > - Daniel, Programmer, Epic Games Inc. > > > -----Original Message----- > > From: gda...@li... > > [mailto:gda...@li...]On Behalf > > Of Jason Zisk > > Sent: Sunday, February 25, 2001 6:47 PM > > To: gda...@li... > > Subject: Re: [Algorithms] Doom lightmaps > > > > > > I don't see how you can draw a texture for objects/lights that are moving > > like in those movies? As soon as the light moves the texture would become > > invalid (I'm assuming there is a texture per light thats mapped onto the > > geometry). > > > > - Jason Zisk > > - nFusion Interactive LLC > > > > ----- Original Message ----- > > From: "Corrinne Yu" <cor...@ho...> > > To: <gda...@li...> > > Sent: Sunday, February 25, 2001 4:47 PM > > Subject: Re: [Algorithms] Doom lightmaps > > > > > -- Those are projective textures. How would I know? I know the man who > > made > > > the textures. And it is an artist, not a programmer. :) > > > > > > > > > _______________________________________________ > > > GDAlgorithms-list mailing list > > > GDA...@li... > > > http://lists.sourceforge.net/lists/listinfo/gdalgorithms-list > > > > > > > > > _______________________________________________ > > GDAlgorithms-list mailing list > > GDA...@li... > > http://lists.sourceforge.net/lists/listinfo/gdalgorithms-list > > > _______________________________________________ > GDAlgorithms-list mailing list > GDA...@li... > http://lists.sourceforge.net/lists/listinfo/gdalgorithms-list > |