I wonder if anybody on this list could offer their wisdom... I've noticed funny artifacts from a scene loaded from a 3ds file and I'm trying to figure out if it's something wrong with my loading or with the 3ds file or ...
In the following picture: http://www.deviantart.com/deviation/56860828/ (click on the picture to get a larger image; sorry about the low quality rendering, but hopefully it's clear enough to see what's going on) The right mirrored sphere is loaded from a 3ds file (it looks to be tessellated with about ~25 slices x 32 wedges). Notice that it has weird artfacts -- reflections in this sphere are distorted with a sort of "herringbone" pattern. I've never seen this sort of distortion before. The left mirrored sphere is tessellated by my own code, using the most obvious algorithm and an even coarser tessellation (12 slices x 16 wedges). Despite the coarser tessellation, it has far fewer obvious artifacts, (and even the artifacts it does have are "unobjectionable", well except for the ugly silhouette). The vertex normals in both spheres are calculated using the same simple algorithm which just averages the face normals (I don't use the lib3ds normal calculation). The basic scene geometry and environment map are from Christian Bauer: http://hdri.cgtechniques.com/~sibenik2/ http://hdri.3dweave.com/library/ In the renderings from this model on Christian's site, the mirrored sphere looks fine, so I don't know if it's an error in my 3ds loading or some problem with the 3ds file...? I think the 3ds file was converted from some other format, so perhaps there was a problem in the conversion? Any ideas what could be going on? Thanks, -Miles -- Fast, small, soon; pick any 2. ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ lib3ds-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/lib3ds-devel
