static bool load_image(const char * fname, TGAImageRec & tex);
static bool load_png(const char * fname, TGAImageRec & tex);
static bool load_jpg(const char * fname, TGAImageRec & tex);
static bool load_image(const char * fname, TGAImageRec & tex);
static bool load_png(const char * fname, TGAImageRec & tex);
static bool load_jpg(const char * fname, TGAImageRec & tex);