FreeType subpixel hinting attempt

#include <iostream>

#include <ft2build.h>
#include FT_FREETYPE_H
#include FT_LCD_FILTER_H
#include FT_MODULE_H
#include FT_TRUETYPE_DRIVER_H

#include "FileUtility.hpp"

int main(int argc, char** argv) {

    FT_Library library;
    FT_Error error = FT_Init_FreeType(&library);
    if (error) std::cout << "Freetype init failed!" << std::endl;

    FT_UInt interpreter_version = TT_INTERPRETER_VERSION_38;
    error = FT_Property_Set(library, "truetype", "interpreter-version", &interpreter_version);
    if (error) std::cout << "Property setting failed!" << std::endl;

    FT_Library_SetLcdFilter(library, FT_LCD_FILTER_DEFAULT);
    if (error) std::cout << "Failed to set LCD filter!" << std::endl;

    FT_Face face;
    error = FT_New_Face(library, "NotoSans-Regular.ttf", 0, &face);
    if (error) std::cout << "Font loading failed!" << std::endl;

    error = FT_Set_Pixel_Sizes(face, 0, 32);
    if (error) std::cout << "Failed to change font size!" << std::endl;

    FT_UInt glyph_index = FT_Get_Char_Index(face, 'T');

    error = FT_Load_Glyph(face, glyph_index, FT_LOAD_TARGET_LCD);
    if (error) std::cout << "Glyph load failed!" << std::endl;

    error = FT_Render_Glyph(face->glyph, FT_RENDER_MODE_LCD);
    if (error) std::cout << "Glyph render failed!" << std::endl;

    // Bitmap exporting
    FT_Bitmap *result = &face->glyph->bitmap;
    char *pixelData = new char[result->width * result->rows];
    for (int i = 0; i < result->width / 3 * result->rows; i++) {
        // Reversing channel order
        pixelData[i * 3    ] = result->buffer[i * 3 + 2];
        pixelData[i * 3 + 1] = result->buffer[i * 3 + 1];
        pixelData[i * 3 + 2] = result->buffer[i * 3];
    }
    FileUtility::createBitmapFile("out.bmp", result->width / 3, result->rows, pixelData);

    delete[] pixelData;
    FT_Done_Face(face);
    FT_Done_FreeType(library);
    return 0;
}