function pal_swap_set(arg0, arg1, arg2)
{
    var _pal_sprite = arg0;
    var _pal_index = arg1;
    if (_pal_index == 0)
        exit;
    var mode = UnknownEnum.Value_0;
    if (!arg2)
    {
        if (global.Pal_HTML5)
        {
            shader_set(global.Pal_HTML5_Sprite);
            mode = UnknownEnum.Value_1;
        }
        else
        {
            shader_set(global.Pal_Shader);
        }
        global.Pal_Shader_Is_Set = true;
        var tex = sprite_get_texture(_pal_sprite, 0);
        var UVs = sprite_get_uvs(_pal_sprite, 0);
        texture_set_stage(global.Pal_Texture[mode], tex);
        var texel_x = texture_get_texel_width(tex);
        var texel_y = texture_get_texel_height(tex);
        var texel_hx = texel_x * 0.5;
        var texel_hy = texel_y * 0.5;
        shader_set_uniform_f(global.Pal_Texel_Size[mode], texel_x, texel_y);
        shader_set_uniform_f(global.Pal_UVs[mode], UVs[0] + texel_hx, UVs[1] + texel_hy, UVs[2], UVs[3]);
        shader_set_uniform_f(global.Pal_Index[mode], _pal_index);
    }
    else
    {
        if (global.Pal_HTML5)
        {
            shader_set(global.Pal_HTML5_Surface);
            mode = UnknownEnum.Value_2;
        }
        else
        {
            shader_set(global.Pal_Shader);
        }
        global.Pal_Shader_Is_Set = true;
        var tex = surface_get_texture(_pal_sprite);
        texture_set_stage(global.Pal_Texture[mode], tex);
        var texel_x = texture_get_texel_width(tex);
        var texel_y = texture_get_texel_height(tex);
        var texel_hx = texel_x * 0.5;
        var texel_hy = texel_y * 0.5;
        shader_set_uniform_f(global.Pal_Texel_Size[mode], texel_x, texel_y);
        shader_set_uniform_f(global.Pal_UVs[mode], texel_hx, texel_hy, 1 + texel_hx, 1 + texel_hy);
        shader_set_uniform_f(global.Pal_Index[mode], _pal_index);
    }
}

enum UnknownEnum
{
    Value_0,
    Value_1,
    Value_2
}