1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93
|
GLuint convertImageToTexture(const char *nomFichier)
{
GLuint glID;
SDL_Surface * picture_surface = NULL;
SDL_Surface * gl_surface = NULL;
SDL_Surface * gl_fliped_surface = NULL;
Uint32 rmask, gmask, bmask, amask;
picture_surface = IMG_Load(nomFichier);
if (picture_surface == NULL)
{
std::cerr << "Impossible de charger Fichier image! \n";
return 0;
}
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
rmask = 0xff000000;
gmask = 0x00ff0000;
bmask = 0x0000ff00;
amask = 0x000000ff;
#else
rmask = 0x000000ff;
gmask = 0x0000ff00;
bmask = 0x00ff0000;
amask = 0xff000000;
#endif
SDL_PixelFormat format = *(picture_surface->format);
format.BitsPerPixel = 32;
format.BytesPerPixel = 4;
format.Rmask = rmask;
format.Gmask = gmask;
format.Bmask = bmask;
format.Amask = amask;
gl_surface = SDL_ConvertSurface(picture_surface,&format,SDL_SWSURFACE);
gl_fliped_surface = flipSurface(gl_surface);
glGenTextures(1, &glID);
glBindTexture(GL_TEXTURE_2D, glID);
glTexImage2D(GL_TEXTURE_2D, 0, 4, gl_fliped_surface->w,
gl_fliped_surface->h, 0, GL_RGBA,GL_UNSIGNED_BYTE,
gl_fliped_surface->pixels);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
SDL_FreeSurface(gl_fliped_surface);
SDL_FreeSurface(gl_surface);
SDL_FreeSurface(picture_surface);
std::cerr << "Load TEXTURES : OK, id :" << glID << "\n";
return glID;
}
SDL_Surface * flipSurface(SDL_Surface * surface)
{
int current_line,pitch;
SDL_Surface * fliped_surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
surface->w,surface->h,
surface->format->BitsPerPixel,
surface->format->Rmask,
surface->format->Gmask,
surface->format->Bmask,
surface->format->Amask);
SDL_LockSurface(surface);
SDL_LockSurface(fliped_surface);
pitch = surface->pitch;
for (current_line = 0; current_line < surface->h; current_line ++)
{
memcpy(&((unsigned char* )fliped_surface->pixels)[current_line*pitch],
&((unsigned char* )surface->pixels)[(surface->h - 1 -
current_line)*pitch],
pitch);
}
SDL_UnlockSurface(fliped_surface);
SDL_UnlockSurface(surface);
return fliped_surface;
} |
Partager