+void Texture3D::image(const Graphics::Image &img, bool srgb)
+{
+ unsigned w = img.get_width();
+ unsigned h = img.get_height();
+ unsigned d = 1;
+
+ if(depth)
+ {
+ if(h%depth)
+ throw incompatible_data("Texture3D::load_image");
+ h /= depth;
+ d = depth;
+ }
+ else
+ {
+ if(h%w)
+ throw incompatible_data("Texture3D::load_image");
+ d = h/w;
+ h = w;
+ }
+
+ PixelFormat fmt = pixelformat_from_graphics(img.get_format());
+ if(width==0)
+ {
+ unsigned l = (is_mipmapped(min_filter) ? mipmap_levels ? mipmap_levels : 0 : 1);
+ storage(storage_pixelformat_from_graphics(img.get_format(), srgb), w, h, d, l);
+ }
+ else if(w!=width || h!=height || d!=depth)
+ throw incompatible_data("Texture3D::load_image");
+
+ PixelStore pstore = PixelStore::from_image(img);
+ BindRestore _bind_ps(pstore);
+
+ image(0, fmt, UNSIGNED_BYTE, img.get_data());
+}
+
+unsigned Texture3D::get_n_levels() const
+{
+ unsigned s = max(width, height);
+ if(target!=GL_TEXTURE_2D_ARRAY)
+ s = max(s, depth);
+ unsigned n = 0;
+ for(; s; s>>=1, ++n) ;
+ return n;
+}
+
+void Texture3D::get_level_size(unsigned level, unsigned &w, unsigned &h, unsigned &d) const
+{
+ w >>= level;
+ h >>= level;
+ if(target!=GL_TEXTURE_2D_ARRAY)
+ d >>= level;
+
+ if(!w && (h || d))
+ w = 1;
+ if(!h && (w || d))
+ h = 1;
+ if(!d && (w || h))
+ d = 1;
+}
+
+UInt64 Texture3D::get_data_size() const
+{
+ return id ? width*height*depth*get_pixel_size(ifmt) : 0;
+}
+
+
+Texture3D::Loader::Loader(Texture3D &t):
+ DataFile::DerivedObjectLoader<Texture3D, Texture::Loader>(t)
+{
+ init();
+}
+
+Texture3D::Loader::Loader(Texture3D &t, Collection &c):
+ DataFile::DerivedObjectLoader<Texture3D, Texture::Loader>(t, c)
+{
+ init();
+}
+
+void Texture3D::Loader::init()
+{
+ add("raw_data", &Loader::raw_data);
+ add("storage", &Loader::storage);
+}
+
+void Texture3D::Loader::raw_data(const string &data)
+{
+ obj.image(0, get_base_pixelformat(obj.ifmt), UNSIGNED_BYTE, data.data());
+}
+
+void Texture3D::Loader::storage(PixelFormat fmt, unsigned w, unsigned h, unsigned d)
+{
+ obj.storage(fmt, w, h, d);