Hi, Im looking for a tutorial on how to implement a bump map, but can only find normal map tutorials. Im looking for the bump map method where you use a black and white image for the bump data and calculate the influence vector, rather than the RGB method. I have a book that gave the idea, i just dont know how to implement it in Directx. They mention getting the vector from the current pixel to the next pixel in the image, for both U and V, and then add these to the current normal vector, to influence it. Any help wold be appreciated

I dont have a reference on hand but its normally called emboss mapping..so search for that.

Thanks, ive been looking all over, and all i can find is tutorials that go through the creation of the bump, via preprocessing the heightmap beforehand into a normalmap. Can this not be done in real time?