OK. I searched almost a day around the net. 🙂 Im gonna ask the questions on the gamedev forum, but what does that mean “How can we apply visibility tests?”
While i searched, i found this ->
http://www.gamedev.net/page/resources/_/technical/opengl/opengl-instancing-demystified-r3226
http://www.geeks3d.com/20141017/opengl-geometry-instancing-test-radeon-vs-geforce/
http://www.geeks3d.com/glslhacker/cs/ – looks very nice, like eye candy images!
http://www.g-truc.net/doc/Candidate%20features%20for%20OpenGL%205.pdf
http://blog.tojicode.com/2013/07/webgl-instancing-with.html
http://rastergrid.com/blog/ – Looks like very nice site. It have some nice stuff, like GPU based dynamic geometry LOD, Hierarchical-Z map based occlusion culling…
Hope those links are useful.