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SlimDX with DirectShow.NET and shader effects

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Hi all,

For a project which I am working on, I want to display video onto a Direct3D surface. I am using SlimDX and DirectShow .NET library to achieve this. I have modified the DirectShow VMR9 allocator sample project to use SlimDX to render the video onto a surface. So far, so good.

There are now two thing I wish to do with this video:

1. I would like to blend in a Bitmap which will be used as a clipping mask (where onlt the white pixels let the video pixels render)
2. Suppose you would have each pixel map to an LED, resulting in a matrix of LED's. The panel on which the LED's are mounted is covered with a textile cloth, resulting in a diffuse spread of the light. This is the effect if would like to apply to the video rendered on-screen. I think this can be achieved by applying horizontal and vertical blur, and an additional effect is needed to let the bright areas light up more. However, I have very little experience with these things.

So my question(s) are these:

How would I go about achieving the abovementioned effects? Will I have to do everything in shaders? If so, which effects would I need to apply and where can I find some good information on implementing them?

Your help is much appreciated.

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