Texture Data

The remainder of the file, after the header and metadata, is texture data. The format and size of this texture data can be found in the header.

Uncompressed Texture Data Structure

The uncompressed texture data is laid out as follows:

for each MIP-Map Level in MIP-Map Count
      for each Surface in Num. Surfaces
            for each Face in Num. Faces
                  for each Slice in Depth
                        for each Row in Height
                              for each Pixel in Width
                                    Byte data[Size_Based_On_PixelFormat]
                              end
                        end
                  end
            end
      end
end

Compressed Texture Data Structure

All compressed data formats have a “minimum width/height”, which is the lowest number of pixels that can be represented by any given region in a compressed image.

The compressed texture data is laid out as follows:

for each MIP-Map Level in MIP-Map Count
      for each Surface in Num. Surfaces
            for each Face in Num. Faces
                  for each Region by aligned Depth (Based_On_PixelFormat)
                        for each Region by aligned Height (Based_On_PixelFormat)
                              for each Region by aligned Width (Based_On_PixelFormat)
                                    Byte data[Size_Based_On_PixelFormat]
                              end
                        end
                  end
            end
      end
end