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Under the Normal offset a draw to a target the game reads back at its own width, or to depth alone, moves by exactly half a native pixel: the scaled half-fragment offset times the scale, which is the native-aligned offset's shift. The target carries a flag for it in place of a factor, and no scale adds a correction of its own, so every multiplier behaves alike. tests/gssamplemap pins the Normal shift against the native-aligned one for scales 2 to 12.