api8/src/font.c

#include "../includes/font.h"

int initFont(TTF_Font **font, char *filename, int size) {
  if (TTF_Init() == -1) {
    fprintf(stderr, "Erreur TTF : %s\n", TTF_GetError());
    return 1;
  }

  if (!(*font = TTF_OpenFont(filename, size))) {
    fprintf(stderr, "Erreur TTF : %s\n", TTF_GetError());
    return 2;
  }

  return 0;
}

int writeText(GLuint *_textTexId, TTF_Font *font, const char *text,
              SDL_Color color) {
  glGenTextures(1, _textTexId);
  assert(_textTexId);

  glBindTexture(GL_TEXTURE_2D, *_textTexId);
  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);

  SDL_Surface *d, *s;
  if (!(d = TTF_RenderUTF8_Blended_Wrapped(font, text, color, 0))) {
    freeFont(font);
    fprintf(stderr, "Erreur TTF : TTF_RenderUTF8_Blended_Wrapped\n");
    return 1;
  }

  if (!(s = SDL_CreateRGBSurface(0, d->w, d->h, 32, R_MASK, G_MASK, B_MASK,
                                 A_MASK))) {
    freeFont(font);
    fprintf(stderr, "Erreur SDL : %s\n", SDL_GetError());
    return 2;
  }
  SDL_BlitSurface(d, NULL, s, NULL);
  SDL_FreeSurface(d);

  glBindTexture(GL_TEXTURE_2D, *_textTexId);
  glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, s->w, s->h, 0, GL_RGBA,
               GL_UNSIGNED_BYTE, s->pixels);

  SDL_FreeSurface(s);
  glBindTexture(GL_TEXTURE_2D, 0);

  return 0;
}

void freeFont(TTF_Font *font) {
  if (font) {
    TTF_CloseFont(font);
    font = NULL;
  }
}