NVIDIA has updated the Shader Library that comes with FX Composer. Almost every effect file has been updated and rewritten, and new shaders added such as Post God Rays.
Here is an article that explains what is CUDA, the NVIDIA technology for GPU programming. Sorry for english readers but this article is in french.
Read the complete article HERE.
Voici un article, en français, de vulgarisation de la technologie CUDA de NVIDIA.
L’article complet se trouve ICI.