Today I forgot my own history (I must be getting alysmers)... and was doomed to repeat the same mistake.


I was trying on my terrain class, so far its nothing but a quad packed with veriticies and compacted with an indexbuffer. The formulas I was using.

//Verticies = ((2^n)+1)^2
//Indicies = (2^n)^2 * 6
//Triangles = (2^n)^2 * 2

When n<9 I was having no problem, it was rendering fast and the whole picture was showing. However when n>8 it was only rendering a portion of the terrain/quad... it turns out that I was using shorts for my indexbuffer, the values where going higher than that of a short can handle.