I converted Counter-Strike map to obj by Crafty, imported this obj to blender and tried to export it to egg by chicken. I got warning:
Bad tangent/binormals detected - exported geometry has either degenerate faces or, more typically, face vertices that share uv coordinates.What it means? Why I got this warning?
The Chicken exporter exports tangents and binormals into the egg files it creates, which are needed to correctly render normal and parallax maps, plus anisotropic materials. Last I checked counter strike maps make use of none of these features, so you may safety ignore it.
The actual warning is basically saying that dud geometry exists in the file (Where by geometry I am also including the uv information.), for which generating tangents and binormals is impossible. Such dud geometry will not render correctly, and can also cause problems with physics and AI, so you might want to clean it up at some point - there are tools for detecting such problems and highlighting where they are. Of course, if this is a playable counter strike map your using then chances are it doesn’t matter.
Counter strike don’t use normal and parallax maps and anisotropic materials (because Half-Life 1 (GoldSrc) engine doesn’t support this features).
Please, give me names of these tools.
This map is one of the most popular and playable counter strike maps (de_dust)
PS. Sorry for my bad english
I don’t really know any tool that gets all situations - Google brings up how to find degenerate faces (Can be done with the right sequence of operations in Blender, i.e. blenderartists.org/forum/archive … 40046.html Beware you might want to merge duplicate vertices before doing the above.) but not degenerate uv’s. But for AI and Physics only degenerate faces can be an issue, and when it comes to rendering its only worth fixing a problem if you can see it.
My advice would be to ignore it however - its only worth doing something if you find a problem - no point putting in effort without a reason.