enum ColorSpaceId
{
    SRGB,
    LinearSRGB,
    ACEScg,
    ACES2065,
    Invalid
};

ShaderResourceGroupSemantic SRG_Main
{
    FrequencyId = 0;
}

ShaderResourceGroup MainSrg : SRG_Main
{
    ColorSpaceId m_textureColorSpaceId;   // #EC 45  non packable kind of type
}
