Method enableGlow

core/2d/Label.cpp:1414–1444

}

void Label::enableGlow(const Color4B& glowColor, float glowRadius)
{
    if (glowRadius <= 0)
        glowRadius = FontFreeType::DistanceMapSpread / 2.0f;

    if (_currentLabelType == LabelType::TTF && (glowRadius > 0 || _currLabelEffect == LabelEffect::GLOW))
    {
        _glowRadius = glowRadius;

        auto config                 = _fontConfig;
        int mods                    = 0;
        // Note: axmol only support Glow effect in SDF rendering mode
        if (!_fontConfig.distanceFieldEnabled)
        {
            config.distanceFieldEnabled = true;
            ++mods;
        }
        if (mods)
        {
            setTTFConfig(config);
            _contentDirty = true;
            updateShaderProgram();
        }
        _currLabelEffect = LabelEffect::GLOW;
        _effectColorF.r  = glowColor.r / 255.0f;
        _effectColorF.g  = glowColor.g / 255.0f;
        _effectColorF.b  = glowColor.b / 255.0f;
        _effectColorF.a  = glowColor.a / 255.0f;
        updateShaderProgram();
    }
}

void Label::enableOutline(const Color4B& outlineColor, float outlineSize /* = -1 */)
{