ColorFromPaletteHDImpl()

template<fl::u8 PaletteBits, typename Reader>

CRGB16 fl::anonymous_namespace{colorutils.cpp.hpp}::ColorFromPaletteHDImpl	(	const Reader &	reader,
		fl::u16	index,
		fl::u8x8	brightness,
		TBlendType	blendType )

Definition at line 305 of file colorutils.cpp.hpp.

                                                    {
    const fl::u8 frac_bits = 16 - PaletteBits;
    const fl::u8 palette_last = (fl::u8(1) << PaletteBits) - 1;
    const fl::u32 segment_size = fl::u32(1) << frac_bits;
    const fl::u8 entry_index = static_cast<fl::u8>(index >> frac_bits);
    const fl::u16 frac =
        static_cast<fl::u16>(index & (segment_size - fl::u32(1)));
 
    const CRGB rgb1 = reader.read(entry_index);
    CRGB16 out;
    if (frac && blendType != NOBLEND) {
        CRGB rgb2;
        if (entry_index == palette_last) {
            rgb2 = blendType == LINEARBLEND_NOWRAP ? rgb1 : reader.read(0);
        } else {
            rgb2 = reader.read(entry_index + 1);
        }
        out = CRGB16(u8x8::from_raw(lerp_channel_to_hd(
                         rgb1.red, rgb2.red, frac, segment_size)),
                     u8x8::from_raw(lerp_channel_to_hd(
                         rgb1.green, rgb2.green, frac, segment_size)),
                     u8x8::from_raw(lerp_channel_to_hd(
                         rgb1.blue, rgb2.blue, frac, segment_size)));
    } else {
        out = promote_rgb_to_hd(rgb1);
    }
 
    scale_rgb_hd(out, brightness);
    return out;
}

References brightness, ColorFromPaletteHDImpl(), fl::u8x8::from_raw(), lerp_channel_to_hd(), promote_rgb_to_hd(), and scale_rgb_hd().

Referenced by ColorFromPaletteHDImpl().

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