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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 Cobbs584March 11, 2013 10:38PM
Re: T-Junctions re-visited Tim Gould261March 11, 2013 11:31PM
Re: T-Junctions re-visited Roland Melkert242March 12, 2013 11:17AM
Re: T-Junctions re-visited Ben Supnik249March 12, 2013 11:17AM
Re: T-Junctions re-visited Roland Melkert238March 12, 2013 11:22AM
Re: T-Junctions re-visited Ben Supnik235March 12, 2013 11:32AM
Re: T-Junctions re-visited Roland Melkert226March 12, 2013 11:41AM
Re: T-Junctions re-visited Ben Supnik237March 12, 2013 11:55AM
Re: T-Junctions re-visited Roland Melkert231March 13, 2013 10:08AM
Re: T-Junctions re-visited Travis Cobbs252March 13, 2013 11:27AM
Re: T-Junctions re-visited Allen Smith282March 12, 2013 02:01PM
Re: T-Junctions re-visited Michael Heidemann239March 13, 2013 09:27AM
Re: T-Junctions re-visited Ben Supnik238March 13, 2013 10:37AM
Re: T-Junctions re-visited Tim Gould231March 13, 2013 02:31PM
Re: T-Junctions re-visited Michael Heidemann228March 13, 2013 03:42PM
Re: T-Junctions re-visited Michael Heidemann217March 17, 2013 04:35AM
Re: T-Junctions re-visited Ben Supnik203March 17, 2013 08:43AM
Re: T-Junctions re-visited Michael Heidemann202March 17, 2013 08:59AM
Re: T-Junctions re-visited Ben Supnik215March 17, 2013 09:02AM
Re: T-Junctions re-visited Magnus Forsberg208March 17, 2013 09:15AM
Re: T-Junctions re-visited Travis Cobbs240March 17, 2013 10:09PM
Re: T-Junctions re-visited Ben Supnik232March 18, 2013 07:30AM
Re: T-Junctions re-visited Travis Cobbs241March 18, 2013 10:57AM
Re: T-Junctions re-visited Ben Supnik248March 18, 2013 11:27AM
Re: T-Junctions re-visited Travis Cobbs235March 18, 2013 12:23PM
Re: T-Junctions re-visited Ben Supnik250March 18, 2013 01:41PM
Re: T-Junctions re-visited Roland Melkert254March 18, 2013 02:51PM
Re: T-Junctions re-visited Travis Cobbs231March 18, 2013 02:59PM
Re: T-Junctions re-visited Roland Melkert240March 18, 2013 03:41PM
Re: T-Junctions re-visited Ben Supnik247March 18, 2013 06:09PM
Re: T-Junctions re-visited Roland Melkert245March 19, 2013 11:38AM
Re: T-Junctions re-visited Ben Supnik258March 19, 2013 11:43AM
Re: T-Junctions re-visited Roland Melkert283March 19, 2013 07:07PM
Re: T-Junctions re-visited Travis Cobbs253March 19, 2013 10:13PM
Re: T-Junctions re-visited Tim Gould243March 20, 2013 03:56AM
Re: T-Junctions re-visited Travis Cobbs226March 20, 2013 10:13AM
Re: T-Junctions re-visited Ben Supnik215March 20, 2013 10:23AM
Re: T-Junctions re-visited Travis Cobbs231March 20, 2013 10:29AM
Re: T-Junctions re-visited Travis Cobbs227March 20, 2013 10:26AM
Re: T-Junctions re-visited Ben Supnik211March 20, 2013 11:18AM
Re: T-Junctions re-visited Ben Supnik227March 20, 2013 06:42AM
Re: T-Junctions re-visited Roland Melkert234March 20, 2013 11:36AM
Re: T-Junctions re-visited Philippe Hurbain233March 20, 2013 06:36AM
Re: T-Junctions re-visited Ben Supnik233March 20, 2013 06:58AM
Re: T-Junctions re-visited Allen Smith238March 20, 2013 09:08AM
Re: T-Junctions re-visited Roland Melkert248March 20, 2013 11:35AM
Re: T-Junctions re-visited Ben Supnik617March 20, 2013 11:50AM
Re: T-Junctions re-visited Michael Heidemann250March 18, 2013 03:54PM
Re: T-Junctions re-visited Roland Melkert236March 13, 2013 10:03AM
Re: T-Junctions re-visited Tim Gould211March 13, 2013 03:56PM
Re: T-Junctions re-visited Sergio Reano215March 13, 2013 03:51PM
Re: T-Junctions re-visited Roland Melkert274March 13, 2013 04:36PM
Re: T-Junctions re-visited Tim Gould238March 13, 2013 05:10PM
Re: T-Junctions re-visited Ben Supnik220March 14, 2013 08:17PM
Re: T-Junctions re-visited Tim Gould278March 14, 2013 08:41PM
Re: T-Junctions re-visited Ben Supnik274March 15, 2013 10:56AM
Re: T-Junctions re-visited Roland Melkert234March 15, 2013 11:36AM
Re: T-Junctions re-visited Ben Supnik212March 13, 2013 06:58PM
Re: T-Junctions re-visited Roland Melkert224March 13, 2013 07:27PM
Re: T-Junctions re-visited Ben Supnik198March 13, 2013 07:37PM
Re: T-Junctions re-visited Roland Melkert217March 13, 2013 07:59PM
Re: T-Junctions re-visited Ben Supnik243March 13, 2013 08:18PM
Re: T-Junctions re-visited Travis Cobbs263March 14, 2013 03:23PM
Re: T-Junctions re-visited Roland Melkert271March 14, 2013 03:34PM
Re: T-Junctions re-visited Tim Gould286March 14, 2013 03:41PM
Re: T-Junctions re-visited Roland Melkert244March 15, 2013 11:33AM
Re: T-Junctions re-visited Tim Gould203March 13, 2013 07:43PM
Re: T-Junctions re-visited Roland Melkert218March 13, 2013 08:08PM
Re: T-Junctions re-visited Tim Gould215March 13, 2013 08:18PM
Re: T-Junctions re-visited Ben Supnik279March 14, 2013 08:15PM
Re: T-Junctions re-visited Roland Melkert265March 15, 2013 11:29AM
Re: T-Junctions re-visited Travis Cobbs238March 15, 2013 12:27PM
Re: T-Junctions re-visited Ben Supnik252March 15, 2013 05:08PM
Re: T-Junctions re-visited Travis Cobbs239March 16, 2013 11:29PM
Re: T-Junctions re-visited Ben Supnik202March 17, 2013 08:58AM
Re: T-Junctions re-visited Roland Melkert209March 17, 2013 12:35PM
Re: T-Junctions re-visited Travis Cobbs230March 18, 2013 12:28PM
Re: T-Junctions re-visited Travis Cobbs247March 18, 2013 12:32PM
Re: T-Junctions re-visited Roland Melkert247March 18, 2013 05:00PM
Re: T-Junctions re-visited Travis Cobbs269March 18, 2013 11:05PM
Re: T-Junctions re-visited Roland Melkert289March 19, 2013 11:38AM
Re: T-Junctions re-visited Sergio Reano279March 26, 2013 02:46PM
Re: T-Junctions re-visited Roland Melkert229March 27, 2013 11:19AM
Re: T-Junctions re-visited Sergio Reano284March 27, 2013 01:48PM



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