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Re: T-Junctions re-visited
avatarMarch 15, 2013 12:27PM
The driver almost certainly does convert the quad to triangles, but the calculated average surface normal will be different, because with quads, the point has exactly two contributing normals, which averate to a normal pointing away from the centerline of the cylinder (as desired). However, when the normal smoothing is done on the triangles, one facet will have two triangles contributing to the given point, while the other facet only has one. This will cause the normals on the bottom of the cyllinder to get pulled one way (say clockwise), while the top ones get pulled the opposite way (say counterclockwise). This leads to visible artifacts.
SubjectAuthorViewsPosted
T-Junctions re-visited Travis Cobbs886March 11, 2013 10:38PM
Re: T-Junctions re-visited Tim Gould467March 11, 2013 11:31PM
Re: T-Junctions re-visited Roland Melkert411March 12, 2013 11:17AM
Re: T-Junctions re-visited Ben Supnik425March 12, 2013 11:17AM
Re: T-Junctions re-visited Roland Melkert397March 12, 2013 11:22AM
Re: T-Junctions re-visited Ben Supnik381March 12, 2013 11:32AM
Re: T-Junctions re-visited Roland Melkert372March 12, 2013 11:41AM
Re: T-Junctions re-visited Ben Supnik383March 12, 2013 11:55AM
Re: T-Junctions re-visited Roland Melkert379March 13, 2013 10:08AM
Re: T-Junctions re-visited Travis Cobbs403March 13, 2013 11:27AM
Re: T-Junctions re-visited Allen Smith413March 12, 2013 02:01PM
Re: T-Junctions re-visited Michael Heidemann398March 13, 2013 09:27AM
Re: T-Junctions re-visited Ben Supnik380March 13, 2013 10:37AM
Re: T-Junctions re-visited Tim Gould390March 13, 2013 02:31PM
Re: T-Junctions re-visited Michael Heidemann371March 13, 2013 03:42PM
Re: T-Junctions re-visited Michael Heidemann401March 17, 2013 04:35AM
Re: T-Junctions re-visited Ben Supnik342March 17, 2013 08:43AM
Re: T-Junctions re-visited Michael Heidemann340March 17, 2013 08:59AM
Re: T-Junctions re-visited Ben Supnik333March 17, 2013 09:02AM
Re: T-Junctions re-visited Magnus Forsberg355March 17, 2013 09:15AM
Re: T-Junctions re-visited Travis Cobbs419March 17, 2013 10:09PM
Re: T-Junctions re-visited Ben Supnik383March 18, 2013 07:30AM
Re: T-Junctions re-visited Travis Cobbs380March 18, 2013 10:57AM
Re: T-Junctions re-visited Ben Supnik391March 18, 2013 11:27AM
Re: T-Junctions re-visited Travis Cobbs366March 18, 2013 12:23PM
Re: T-Junctions re-visited Ben Supnik427March 18, 2013 01:41PM
Re: T-Junctions re-visited Roland Melkert443March 18, 2013 02:51PM
Re: T-Junctions re-visited Travis Cobbs414March 18, 2013 02:59PM
Re: T-Junctions re-visited Roland Melkert479March 18, 2013 03:41PM
Re: T-Junctions re-visited Ben Supnik468March 18, 2013 06:09PM
Re: T-Junctions re-visited Roland Melkert411March 19, 2013 11:38AM
Re: T-Junctions re-visited Ben Supnik430March 19, 2013 11:43AM
Re: T-Junctions re-visited Roland Melkert453March 19, 2013 07:07PM
Re: T-Junctions re-visited Travis Cobbs423March 19, 2013 10:13PM
Re: T-Junctions re-visited Tim Gould428March 20, 2013 03:56AM
Re: T-Junctions re-visited Travis Cobbs392March 20, 2013 10:13AM
Re: T-Junctions re-visited Ben Supnik389March 20, 2013 10:23AM
Re: T-Junctions re-visited Travis Cobbs420March 20, 2013 10:29AM
Re: T-Junctions re-visited Travis Cobbs393March 20, 2013 10:26AM
Re: T-Junctions re-visited Ben Supnik375March 20, 2013 11:18AM
Re: T-Junctions re-visited Ben Supnik399March 20, 2013 06:42AM
Re: T-Junctions re-visited Roland Melkert375March 20, 2013 11:36AM
Re: T-Junctions re-visited Philippe Hurbain400March 20, 2013 06:36AM
Re: T-Junctions re-visited Ben Supnik441March 20, 2013 06:58AM
Re: T-Junctions re-visited Allen Smith441March 20, 2013 09:08AM
Re: T-Junctions re-visited Roland Melkert495March 20, 2013 11:35AM
Re: T-Junctions re-visited Ben Supnik918March 20, 2013 11:50AM
Re: T-Junctions re-visited Michael Heidemann450March 18, 2013 03:54PM
Re: T-Junctions re-visited Roland Melkert382March 13, 2013 10:03AM
Re: T-Junctions re-visited Tim Gould347March 13, 2013 03:56PM
Re: T-Junctions re-visited Sergio Reano340March 13, 2013 03:51PM
Re: T-Junctions re-visited Roland Melkert417March 13, 2013 04:36PM
Re: T-Junctions re-visited Tim Gould372March 13, 2013 05:10PM
Re: T-Junctions re-visited Ben Supnik415March 14, 2013 08:17PM
Re: T-Junctions re-visited Tim Gould474March 14, 2013 08:41PM
Re: T-Junctions re-visited Ben Supnik440March 15, 2013 10:56AM
Re: T-Junctions re-visited Roland Melkert385March 15, 2013 11:36AM
Re: T-Junctions re-visited Ben Supnik340March 13, 2013 06:58PM
Re: T-Junctions re-visited Roland Melkert348March 13, 2013 07:27PM
Re: T-Junctions re-visited Ben Supnik337March 13, 2013 07:37PM
Re: T-Junctions re-visited Roland Melkert388March 13, 2013 07:59PM
Re: T-Junctions re-visited Ben Supnik393March 13, 2013 08:18PM
Re: T-Junctions re-visited Travis Cobbs458March 14, 2013 03:23PM
Re: T-Junctions re-visited Roland Melkert470March 14, 2013 03:34PM
Re: T-Junctions re-visited Tim Gould457March 14, 2013 03:41PM
Re: T-Junctions re-visited Roland Melkert435March 15, 2013 11:33AM
Re: T-Junctions re-visited Tim Gould376March 13, 2013 07:43PM
Re: T-Junctions re-visited Roland Melkert367March 13, 2013 08:08PM
Re: T-Junctions re-visited Tim Gould387March 13, 2013 08:18PM
Re: T-Junctions re-visited Ben Supnik464March 14, 2013 08:15PM
Re: T-Junctions re-visited Roland Melkert437March 15, 2013 11:29AM
Re: T-Junctions re-visited Travis Cobbs418March 15, 2013 12:27PM
Re: T-Junctions re-visited Ben Supnik402March 15, 2013 05:08PM
Re: T-Junctions re-visited Travis Cobbs423March 16, 2013 11:29PM
Re: T-Junctions re-visited Ben Supnik340March 17, 2013 08:58AM
Re: T-Junctions re-visited Roland Melkert329March 17, 2013 12:35PM
Re: T-Junctions re-visited Travis Cobbs372March 18, 2013 12:28PM
Re: T-Junctions re-visited Travis Cobbs458March 18, 2013 12:32PM
Re: T-Junctions re-visited Roland Melkert416March 18, 2013 05:00PM
Re: T-Junctions re-visited Travis Cobbs443March 18, 2013 11:05PM
Re: T-Junctions re-visited Roland Melkert504March 19, 2013 11:38AM
Re: T-Junctions re-visited Sergio Reano447March 26, 2013 02:46PM
Re: T-Junctions re-visited Roland Melkert371March 27, 2013 11:19AM
Re: T-Junctions re-visited Sergio Reano472March 27, 2013 01:48PM



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