Firstofall, I am sorry if my question is to broad.

I am developing a tile based game and switched from those gl.Begin calls to using VBOs.

This is kind of working allready, I managed to render a hexagonal polygon with a simple shader applied.

What I am not sure is, how to implement the "whole" tile concept.

Concrete the questions are:

• Is it better to create 1 VBO for a single tile and render it n-Times in every different position, or render one huge VBO that represents the whole "world"

• Depending on the answer above, what is the best way to draw a "linegrid". Overlay with the same vbo using the respecting polygon.mode , or is there a way to let the shader to this?

• How would frustum-culling or mousepicking work then, do i need to keep the VBO-data in memory?