Welcome! Log In Create A New Profile

Advanced
Re: T-Junctions re-visited
March 15, 2013 05:08PM
Yep - this is exactly what I saw when I had triangulation on. But I think in theory a weighting by arc-angle could fix this. Two of the three triangles at a given vertex will share 90 degrees of "span" and the other will have 90 to itself - by this weighting, normals will go back to vertical. I don't know what the effect would be on other shapes.

BrickSmith currently uses non-indexed primitives, and in that configuration, breaking quads into tris is a net performance loss:
- It increases vertex count.
- We hardware-instance together multiple bricks, so our total draw calls is low - so calling glDrawArraysXXX twice isn't a huge problem. (The mac drivers also do a good job of getting the second draw call out quick if no state has been changed.)

I plan to re-measure this once I have indexing working - the indexer is partly done and it looks like it will cut VBO size in half or better.

cheers
Ben
SubjectAuthorViewsPosted
T-Junctions re-visited Travis Cobbs644March 11, 2013 10:38PM
Re: T-Junctions re-visited Tim Gould298March 11, 2013 11:31PM
Re: T-Junctions re-visited Roland Melkert276March 12, 2013 11:17AM
Re: T-Junctions re-visited Ben Supnik285March 12, 2013 11:17AM
Re: T-Junctions re-visited Roland Melkert259March 12, 2013 11:22AM
Re: T-Junctions re-visited Ben Supnik267March 12, 2013 11:32AM
Re: T-Junctions re-visited Roland Melkert259March 12, 2013 11:41AM
Re: T-Junctions re-visited Ben Supnik271March 12, 2013 11:55AM
Re: T-Junctions re-visited Roland Melkert264March 13, 2013 10:08AM
Re: T-Junctions re-visited Travis Cobbs288March 13, 2013 11:27AM
Re: T-Junctions re-visited Allen Smith308March 12, 2013 02:01PM
Re: T-Junctions re-visited Michael Heidemann273March 13, 2013 09:27AM
Re: T-Junctions re-visited Ben Supnik267March 13, 2013 10:37AM
Re: T-Junctions re-visited Tim Gould256March 13, 2013 02:31PM
Re: T-Junctions re-visited Michael Heidemann258March 13, 2013 03:42PM
Re: T-Junctions re-visited Michael Heidemann252March 17, 2013 04:35AM
Re: T-Junctions re-visited Ben Supnik236March 17, 2013 08:43AM
Re: T-Junctions re-visited Michael Heidemann235March 17, 2013 08:59AM
Re: T-Junctions re-visited Ben Supnik246March 17, 2013 09:02AM
Re: T-Junctions re-visited Magnus Forsberg237March 17, 2013 09:15AM
Re: T-Junctions re-visited Travis Cobbs309March 17, 2013 10:09PM
Re: T-Junctions re-visited Ben Supnik264March 18, 2013 07:30AM
Re: T-Junctions re-visited Travis Cobbs274March 18, 2013 10:57AM
Re: T-Junctions re-visited Ben Supnik284March 18, 2013 11:27AM
Re: T-Junctions re-visited Travis Cobbs264March 18, 2013 12:23PM
Re: T-Junctions re-visited Ben Supnik284March 18, 2013 01:41PM
Re: T-Junctions re-visited Roland Melkert293March 18, 2013 02:51PM
Re: T-Junctions re-visited Travis Cobbs262March 18, 2013 02:59PM
Re: T-Junctions re-visited Roland Melkert292March 18, 2013 03:41PM
Re: T-Junctions re-visited Ben Supnik280March 18, 2013 06:09PM
Re: T-Junctions re-visited Roland Melkert281March 19, 2013 11:38AM
Re: T-Junctions re-visited Ben Supnik305March 19, 2013 11:43AM
Re: T-Junctions re-visited Roland Melkert317March 19, 2013 07:07PM
Re: T-Junctions re-visited Travis Cobbs289March 19, 2013 10:13PM
Re: T-Junctions re-visited Tim Gould274March 20, 2013 03:56AM
Re: T-Junctions re-visited Travis Cobbs264March 20, 2013 10:13AM
Re: T-Junctions re-visited Ben Supnik251March 20, 2013 10:23AM
Re: T-Junctions re-visited Travis Cobbs266March 20, 2013 10:29AM
Re: T-Junctions re-visited Travis Cobbs270March 20, 2013 10:26AM
Re: T-Junctions re-visited Ben Supnik246March 20, 2013 11:18AM
Re: T-Junctions re-visited Ben Supnik265March 20, 2013 06:42AM
Re: T-Junctions re-visited Roland Melkert258March 20, 2013 11:36AM
Re: T-Junctions re-visited Philippe Hurbain260March 20, 2013 06:36AM
Re: T-Junctions re-visited Ben Supnik268March 20, 2013 06:58AM
Re: T-Junctions re-visited Allen Smith275March 20, 2013 09:08AM
Re: T-Junctions re-visited Roland Melkert286March 20, 2013 11:35AM
Re: T-Junctions re-visited Ben Supnik671March 20, 2013 11:50AM
Re: T-Junctions re-visited Michael Heidemann283March 18, 2013 03:54PM
Re: T-Junctions re-visited Roland Melkert260March 13, 2013 10:03AM
Re: T-Junctions re-visited Tim Gould241March 13, 2013 03:56PM
Re: T-Junctions re-visited Sergio Reano245March 13, 2013 03:51PM
Re: T-Junctions re-visited Roland Melkert309March 13, 2013 04:36PM
Re: T-Junctions re-visited Tim Gould271March 13, 2013 05:10PM
Re: T-Junctions re-visited Ben Supnik251March 14, 2013 08:17PM
Re: T-Junctions re-visited Tim Gould319March 14, 2013 08:41PM
Re: T-Junctions re-visited Ben Supnik314March 15, 2013 10:56AM
Re: T-Junctions re-visited Roland Melkert267March 15, 2013 11:36AM
Re: T-Junctions re-visited Ben Supnik236March 13, 2013 06:58PM
Re: T-Junctions re-visited Roland Melkert251March 13, 2013 07:27PM
Re: T-Junctions re-visited Ben Supnik236March 13, 2013 07:37PM
Re: T-Junctions re-visited Roland Melkert249March 13, 2013 07:59PM
Re: T-Junctions re-visited Ben Supnik276March 13, 2013 08:18PM
Re: T-Junctions re-visited Travis Cobbs297March 14, 2013 03:23PM
Re: T-Junctions re-visited Roland Melkert306March 14, 2013 03:34PM
Re: T-Junctions re-visited Tim Gould320March 14, 2013 03:41PM
Re: T-Junctions re-visited Roland Melkert283March 15, 2013 11:33AM
Re: T-Junctions re-visited Tim Gould248March 13, 2013 07:43PM
Re: T-Junctions re-visited Roland Melkert245March 13, 2013 08:08PM
Re: T-Junctions re-visited Tim Gould250March 13, 2013 08:18PM
Re: T-Junctions re-visited Ben Supnik309March 14, 2013 08:15PM
Re: T-Junctions re-visited Roland Melkert305March 15, 2013 11:29AM
Re: T-Junctions re-visited Travis Cobbs276March 15, 2013 12:27PM
Re: T-Junctions re-visited Ben Supnik291March 15, 2013 05:08PM
Re: T-Junctions re-visited Travis Cobbs275March 16, 2013 11:29PM
Re: T-Junctions re-visited Ben Supnik234March 17, 2013 08:58AM
Re: T-Junctions re-visited Roland Melkert236March 17, 2013 12:35PM
Re: T-Junctions re-visited Travis Cobbs262March 18, 2013 12:28PM
Re: T-Junctions re-visited Travis Cobbs282March 18, 2013 12:32PM
Re: T-Junctions re-visited Roland Melkert274March 18, 2013 05:00PM
Re: T-Junctions re-visited Travis Cobbs306March 18, 2013 11:05PM
Re: T-Junctions re-visited Roland Melkert330March 19, 2013 11:38AM
Re: T-Junctions re-visited Sergio Reano313March 26, 2013 02:46PM
Re: T-Junctions re-visited Roland Melkert264March 27, 2013 11:19AM
Re: T-Junctions re-visited Sergio Reano312March 27, 2013 01:48PM



Sorry, only registered users may post in this forum.

Click here to login