Function scale16by8_nozero

src/fl/gfx/five_bit_hd_gamma.cpp.hpp:30–32

Branchless scale16by8: (i * (1 + scale)) >> 8. Eliminates the if(scale==0) branch from the standard scale16by8. The caller is responsible for skipping the call when scale==0.

// Eliminates the if(scale==0) branch from the standard scale16by8.
// The caller is responsible for skipping the call when scale==0.
FL_ALWAYS_INLINE u16 scale16by8_nozero(u16 i, u16 scale_plus_one) {
    return static_cast<u16>((static_cast<u32>(i) * scale_plus_one) >> 8);
}

// Core per-pixel transform, fully inlined. All uniform values are
// precomputed by the caller and passed in to avoid per-pixel branches.