Function CalcMask

engine/gui/src/gui.cpp:1472–1474

    }

    static uint16_t CalcMask(uint16_t bits) {
        return (1 << bits) - 1;
    }

    static uint64_t CalcRenderKey(uint64_t layer, uint64_t index) {
        return (layer << LAYER_SHIFT) | (index << INDEX_SHIFT);