In C# Mono V2, Korean characters appear as unknown symbols in the AddTextComponentString native function

[poco8537]

What happened?

I implemented the DrawText3D function in C# Mono V2, but Korean characters appear as unknown symbols when using the AddTextComponentString native function.

In C# V1 and Lua, the same logic correctly displays Korean characters.

Test Code for C# V1 / C# Mono V2:

// (tick omitted)
string text = "테스트";
DrawText3D(228.4157f, -855.1374f, 30.93833f, text, 255, 255, 255, 255, 0.7f);

void DrawText3D(float x, float y, float z, string text, int r, int g, int b, int a, float scaleFactor)
{
    float screenX = 0.0f, screenY = 0.0f;
    bool onScreen = World3dToScreen2d(x, y, z, ref screenX, ref screenY);
    if (!onScreen)
    {
        return;
    }

    Vector3 camCoords = GetGameplayCamCoord();
    float dist = GetDistanceBetweenCoords(camCoords.X, camCoords.Y, camCoords.Z, x, y, z, true);

    float scale = (1 / dist) * scaleFactor;
    float fov = (1 / GetGameplayCamFov()) * 100;
    scale *= fov;

    RegisterFontFile("nanum");
    var fontId = RegisterFontId("nanum");

    SetTextScale(scale, scale);
    SetTextFont(fontId);
    SetTextColour(r, g, b, a);
    SetTextProportional(true);
    SetTextOutline();
    SetTextEntry("STRING");
    SetTextCentre(true);
    AddTextComponentString(text);
    DrawText(screenX, screenY);
}

Test Code for Lua:

CreateThread(function()
    while true do
        local text = "테스트"
        DrawText3D(228.4157, -855.1374, 30.93833, text, 255, 255, 255, 255, 0.7)
        Wait(0)
    end
end)

function DrawText3D(x, y, z, text, r, g, b, a, scaleFactor)
    local onScreen,screenX, screenY  = World3dToScreen2d(x, y, z);

    local camCoords = GetGameplayCamCoord();
    local dist = GetDistanceBetweenCoords(camCoords[1], camCoords[2], camCoords[3], x, y, z, true);

    local scale = (1 / dist) * scaleFactor;
    local fov = (1 / GetGameplayCamFov()) * 100;
    scale *= fov;

    RegisterFontFile("nanum");
    local fontId = RegisterFontId("nanum");

    if onScreen then
        SetTextScale(scale, scale);
        SetTextFont(fontId);
        SetTextColour(r, g, b, a);
        SetTextProportional(true);
        SetTextOutline();
        SetTextEntry("STRING");
        SetTextCentre(true);
        AddTextComponentString(text);
        DrawText(screenX, screenY);
    end
end

Expected result

Korean should be displayed correctly.

Reproduction steps

1. Implement the DrawText3D function in C# Mono V2.
2. Pass a Korean string to the AddTextComponentString native function.
3. Observe that Korean characters appear as unknown symbols.
4. Test the same logic in C# V1 and Lua, where Korean characters display correctly.

Importancy

Unknown

Area(s)

ScRT: C#

Specific version(s)

FiveM 3095/Ver. 13570

Additional information

No response

[DaniGP17]

May be is related to the CString implementation?
Later I can take a look.

[poco8537]

May be is related to the CString implementation? Later I can take a look.

It seems that the output value of Debug.WriteLine((CString)text); is the same as the displayed value