I've been tyring to track down a couple problems I've been having with rendering normal maps.

First of all, I have these shaders that I have programmed previously that take a tangent space

normal map and function 100% correctly. If I move those shaders and normal maps onto an

object in Game Studio I find a number of issues. The normals in the normals map seem to receive

the light from the wrong directions, the flat surface areas are lit correctly though. So I was

wondering if which directions the normal map need to be, Red left or right, Green up or down.

I've tried a number of different arrangements and orderings of my Normal, Binormal and

Tangent matrix.

The second problem is I find that the Binormal and Tangent data changes direction a few

seconds after the game starts.

I'm wondering if these 2 problems are related, any help would be awesome.

Thanks