Either I don't understand what you're suggesting or you don't understand my problem.
Imagine a grid of quads 2000*5. They are all seperate surfaces.
I have 20 tile types.
I want to be make 20 surfaces, one surface for each tile.
The trouble is imagine I want tile (2,2) to be set to surface B. I can easily add a quad to surface B at position 2,2 but how do I remove the 2 tris from surface A.
Clearing the surface sounds bad news.
So how do I locate the 2 tris that I want removed?
Imagine a grid of quads 2000*5. They are all seperate surfaces.
I have 20 tile types.
I want to be make 20 surfaces, one surface for each tile.
The trouble is imagine I want tile (2,2) to be set to surface B. I can easily add a quad to surface B at position 2,2 but how do I remove the 2 tris from surface A.
Clearing the surface sounds bad news.
So how do I locate the 2 tris that I want removed?