Function UnpackBitVectorToFlatIndexList

tutorials/common/imgui/imgui_draw.cpp:2324–2334

};

static void UnpackBitVectorToFlatIndexList(const ImBitVector* in, ImVector<int>* out)
{
    IM_ASSERT(sizeof(in->Storage.Data[0]) == sizeof(int));
    const ImU32* it_begin = in->Storage.begin();
    const ImU32* it_end = in->Storage.end();
    for (const ImU32* it = it_begin; it < it_end; it++)
        if (ImU32 entries_32 = *it)
            for (ImU32 bit_n = 0; bit_n < 32; bit_n++)
                if (entries_32 & ((ImU32)1 << bit_n))
                    out->push_back((int)(((it - it_begin) << 5) + bit_n));
}

static bool ImFontAtlasBuildWithStbTruetype(ImFontAtlas* atlas)
{