Thanks for advice, I will try it and then post feedback.
So I made some stuff, but I still need advice.
I created class called MapCleft for solving these cracks. I define previous and next chunk.. ex. for vertical > previous = left chunk, next = right chunk. I take last column and first column. My MapChunk is 256x256 so this MapCleft is 2x256
Explain image: http://i.imgur.com/NdApnvb.png
Without MapCleft: http://i.imgur.com/ZOWDGa1.jpg
With MapCleft: http://i.imgur.com/w85ebla.jpg
It seems MapCleft is wrong calculated vertices or I dont know.
Vertices count for width: 10
Vertices count for height: 40
Using still tessellation for this stuff. Btw I'm using same shaders as for MapChunks the different is just MapCleft is width 2 and MapChunk is 256
Tags for this Thread