Ah nevermind. This is probably an issue with the BOT implementation we currently have in OpenCL librt. It is not generating the segments properly to ensure there's a reasonably formed solid. Also the algorithm for computing triangle intersections is not the same. IIRC we use Moller-Trumbore's algorithm in OpenCL librt and ANSI C librt uses Badouel's.
On Tue, Oct 24, 2017 at 1:21 AM, Vasco Alexandre da Silva Costa <vasco.co...@gmail.com> wrote: > Hey, > Try using the default OpenCL librt with this primitive: > mged> in x.1 ars 4 6 0 0 3 1 1 3 1 -1 3 -1 -1 3 -1 1 3 1 1 1 1 -1 1 -1 > -1 1 -1 1 1 1 0 -1 0 -1 -1 -1 0 -1 0 1 -1 1 0 -3 0 -1 -3 -1 0 -3 0 1 > -3 0 0 -3 > mged> e x.1 > > It should look different from the ANSI C librt. > Yet if I disable the boolean processing in the OpenCL librt it looks fine: > -c "set a_no_booleans=1" > > It's easier to tell that there's a problem with the lighting mode > changed to surface normals: > -l 2 > > These options can be set in the "Other Options" text box in the > Raytrace->Advanced Settings window. > > -- > Vasco Alexandre da Silva Costa > PhD in Computer Engineering (Computer Graphics) > Instituto Superior Técnico/University of Lisbon, Portugal -- Vasco Alexandre da Silva Costa PhD in Computer Engineering (Computer Graphics) Instituto Superior Técnico/University of Lisbon, Portugal ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ BRL-CAD Developer mailing list brlcad-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/brlcad-devel
