+ 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();
+}