Okay I managed to find some time and wrote a very basic second tutorial that introduces the main concepts behind primitive rendering in DX10. This tutorial builds upon the base code of tutorial 1 so check that out if you haven’t already.
Also I need to mention that I’m not writing these tutorials for complete beginners, I expect you to at least have a very basic understanding of graphics programming and some of the terminology involved. I’m not going to go into a lot of detail regarding terms like culling, rasterizing, fragments etc.
One last aside before the tutorial, what makes DX10 different to DX and openGL is the removal of the fixed function pipeline. Now what the hell does that all mean? Well in directx9 and openGL, they had default ways of handling vertices, colors, texture co-ordinates etc. You’d pass through a vertex and a color and it would know what to do. It also handled lighting and other effects. In DX10 these defaults were removed and the core API has been simplified and reduced, this allows you to have full control over each pipeline stage and removes any past limitations present on things like the number of light sources and so on, but it has a tiny downside, the code complexity has increased a little.
If we take basic lighting for example, in the past a hobbyist could enable lighting with a few simple function calls and would get a satisfactory result and call it a day. Now for the same effect, the hobbyist would have to write all the pixel and vertex shaders necessary and make use of the phong (or other) reflection model equations to manually calculate the effect of lighting on the scene. Read more of this post