Hi, I just started to look into XNA. I have some experience with MDX. However, I haven't done any Shader programming yet. Now as XNA does not implement a Fixed function pipeline anymore, I need to get into Shaders. (I planned on learning them anyway, so it's ok for me that the FFP is missing) However, I don't seem to be able to find any good online resources for Shader development. I found some tutorials, but that's all. Does anyone know if there is e.g. some dedicated website with articles, tutorials etc... related to Shaders? Or would I be better of wth a book and if so, which book do you recommend

Ok, that's what I thought. Both series seem to be the most populars. But there's one question I'd have regarding these books: There is already a ShaderX4 book. Is that basically the same as e.g. ShaderX1 with just the newest features of Shader version 3 explained, or is a rather a progressing thing i.e. I'd have to start with book 1, then 2 etc...

Same question goes for GPU Gems