The x coordinate of the separation point between the linear part and the curved part of the tone mapping function. The value shall be in the range of 0 to 1, excluding 0 and in multiples of 1/4095.
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The x coordinate of the separation point between the linear part and the curved part of the tone mapping function. The value shall be in the range of 0 to 1, excluding 0 and in multiples of 1/4095.