Function native_single_identity

src/fl/gfx/rgbw_colorimetric.cpp.hpp:299–306

Native single-axis authority. For true native input primaries, a pure R/G/B source coordinate is already a request for that exact LED channel. Do not route it through RGW/RBW/BGW or W/LP paths, since that can introduce W or another primary due to white-point/source-matrix differences.

// Do not route it through RGW/RBW/BGW or W/LP paths, since that can introduce
// W or another primary due to white-point/source-matrix differences.
static bool native_single_identity(float s_r, float s_g, float s_b,
                                   float out[4]) FL_NOEXCEPT {
    out[0] = fl::clamp(s_r, 0.0f, 1.0f);
    out[1] = fl::clamp(s_g, 0.0f, 1.0f);
    out[2] = fl::clamp(s_b, 0.0f, 1.0f);
    out[3] = 0.0f;
    return true;
}

// Solve a target XYZ using only a requested physical channel set.
//