if(gen_mipmap && level==0)
{
auto_generate_mipmap();
- for(; (w || h); w>>=1, h>>=1, ++level) ;
- allocated |= (1<<level)-1;
+ allocated |= (1<<get_n_levels())-1;
}
}
image(0, fmt, UNSIGNED_BYTE, from_buffer ? 0 : img.get_data());
}
-void Texture2D::get_level_size(unsigned level, unsigned &w, unsigned &h)
+unsigned Texture2D::get_n_levels() const
+{
+ unsigned n = 0;
+ for(unsigned s=max(width, height); s; s>>=1, ++n) ;
+ return n;
+}
+
+void Texture2D::get_level_size(unsigned level, unsigned &w, unsigned &h) const
{
w >>= level;
h >>= level;