Unity: Convert Linear01Depth To Raw Depth

ConvertLinear01DepthToRawDepth.hlsl

float ConvertLinear01DepthToRawDepth(float d)
{
    // Linear01Depth
    // return 1.0 / (_ZBufferParams.x * z + _ZBufferParams.y);

    // d = 1.0 / (_ZBufferParams.x * z + _ZBufferParams.y);
    // d * (_ZBufferParams.x * z + _ZBufferParams.y) = 1.0;
    // _ZBufferParams.x * z * d + _ZBufferParams.y * d = 1.0;
    // _ZBufferParams.x * z * d = 1.0 - _ZBufferParams.y * d;
    // z = (1.0 - _ZBufferParams.y * d) / (_ZBufferParams.x * d);

    return (1 - _ZBufferParams.y * d) / (_ZBufferParams.x * d);
}