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How can I perform color keying with DirectX graphics?

April 26, 2017color DirectX graphics keying perform

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How can I perform color keying with DirectX graphics?

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Color keying is not directly supported, instead you will have to use alpha blending to emulate color keying. The D3DXCreateTextureFromFileEx() function can be used to facilitate this. This function accepts a key color parameter and will replace all pixels from the source image containing the specified color with transparent black pixels in the created texture.