- void image(int, int, sizei, sizei, int, GLenum, GLenum, void *);
- void image(int, sizei, sizei, TextureFormat, void *);
- void image(const std::string &);
- sizei get_width() const { return width_; }
- sizei get_height() const { return height_; }
+
+ /**
+ Defines the texture storage. This function may only be successfully called
+ once.
+ */
+ void storage(PixelFormat fmt, unsigned wd, unsigned ht, int brd);
+
+ /**
+ Uploads an image to the texture. storage() must have been called prior to
+ this, and the image must have dimensions conforming to the specified
+ storage.
+ */
+ void image(int level, PixelFormat fmt, DataType type, const void *data);
+
+ /**
+ Uploads a sub-image into the texture. Unlike full image upload, there are
+ no constraints on the size of the sub-image.
+ */
+ void sub_image(int level, int x, int y, unsigned wd, unsigned ht, PixelFormat fmt, DataType type, const void *data);
+
+ /**
+ Loads an image from a file and uploads it to the texture. If storage() has
+ not been called, the storage format will be set to match the loaded image.
+ */
+ void load_image(const std::string &fn);
+
+ unsigned get_width() const { return width; }
+ unsigned get_height() const { return height; }
+