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I don't know why people automatically jump to premature generalization/optimization when questions like these pop up. There is something to be said about being preemptive and realizing when a component in a system is likely to be swapped out. All of the answers about "don't worry and code away till you need to change it" generally get people into trouble in ...


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It turns out that the scaling was being corrupted/altered elsewhere, so it was unrelated to the problem I believed it to be. The code above is, for all intents and purposes, correct.


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StretchRect function does not execute the pixel shader. Instead: Set up your render target and draw a polygon to cover the entire screen. This is the common way to perform a "full screen shader" pass. Anecdotally, My personal recommendation is to investigate the Compute Shader.


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If I am understanding the question correctly, you just want the delta mouse when you are in relative mode. According to the docs, https://directxtk.codeplex.com/wikipage?title=Mouse&referringTitle=Home#Absolute%20vs.%20Relative%20Mouse%20position When you query the state of the mouse, the x and y coordinates return the delta. Note, because you ...


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No, it is not possible, unless you read the involved pixels into a pixel shader, and then do the interpolation in the shader program manually.



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