};
private:
- PixelFormat ifmt;
unsigned size;
+ unsigned levels;
unsigned allocated;
+ static TextureCubeFace face_order[6];
static Vector3 directions[6];
+ static unsigned orientations[12];
public:
TextureCube();
- /** Defines storage structure for the texture. Must be called before an
- image can be uploaded. Once storage is defined, it can't be changed. */
- void storage(PixelFormat fmt, unsigned size);
+ /** Defines storage structure for the texture. If lv is zero, the number
+ of mipmap levels is automatically determined from storage dimensions.
+
+ Must be called before an image can be uploaded. Once storage is defined,
+ it can't be changed. */
+ void storage(PixelFormat fmt, unsigned size, unsigned lv = 0);
/** Allocates storage for the cube faces. The contents are initially
undefined. If storage has already been allocated, does nothing. */
unsigned get_size() const { return size; }
private:
- unsigned get_level_size(unsigned);
+ unsigned get_n_levels() const;
+ unsigned get_level_size(unsigned) const;
public:
/** Translates indices into face constants. Valid indices are between 0
and 5, inclusive. */
static TextureCubeFace enumerate_faces(unsigned);
+ static unsigned get_face_index(TextureCubeFace);
+
/** Returns a vector pointing out of the face. */
static const Vector3 &get_face_direction(TextureCubeFace);