2D games are drawn in a two-dimensional space using two-dimensional objects. To represent its position, each game object will have an `x` and a `y` coordinate.

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How do I perform an xBR or hqx filter in XNA?

I'd like to render my game scaled up with one of the hqx filters (hq2x, hq3x or hq4x) or an xBR filter in a shader. How can I do this in XNA 4.0 and SM3? Side note: this question has been heavily ...