Original Post
Hi I would be grateful If someone could recommend me a good site/book/etc about math/graph . I know that this sound strange so I will try to give an example. In DXSDK there is an example ParticleGS. It is generally not difficult, but before drawing particles we set matViewWorldProj, and Inverse of View matrix. And I don't understand why we are setting inverse. I searched dx documentation but couldn't find any valuable information. As You can see generally I would like to deepen my knowledge about graphics effects and math behind it.