lerpLut()

u16 fl::Gamma8Impl::lerpLut ( const fl::ufixed_point< 8, 8 > & fp ) const

inlineprivate

Definition at line 446 of file ease.cpp.hpp.

                                                      {
        u16 raw = fp.raw();
        u8 idx = static_cast<u8>(raw >> 8);    // integer part (LUT index)
        u8 frac = static_cast<u8>(raw & 0xFF); // fractional part (0-255)
        u16 a = mLut[idx];
        u16 b = (idx < 255) ? mLut[idx + 1] : mLut[idx];
        i32 diff = static_cast<i32>(b) - static_cast<i32>(a);
        return static_cast<u16>(a + ((diff * frac) >> 8));
    }

References fl::fixed_point< IntBits, FracBits, S >::raw().

Referenced by convert(), and convert().

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