Mosaic Effect

Develop with RenderMonkey, refer to Someone's blog:

    

Get Source Code Here. (Not understand how to make RenderTarget work in FX Composor, so I just provide RenderMonkey project file here).

 

Blur and some Effects

Develop with RenderMonkey, refer to <Shaders for Game Programmers and Artists>:

  

 

Blur - Get Source Code Here.

EdgeDetection - Get Source Code Here.

Sharpening - Get Source Code Here.

Animated Texture - Get Source Code Here.

Motion Blur - Get Source Code Here. (not passed FX Composer Test, require fixing)

Grayscale Effect

Develop with RenderMonkey, refer to <Shaders for Game Programmers and Artists>:

 

Get source code here.

Some matrix will be helpful: