Function ktxTexture2_calcLevelOffset

lib/texture2.c:1677–1692

* @memberof ktxTexture2 @private * @~English * @brief Return the offset of a level in bytes from the start of the image * data in a ktxTexture. * * Since the offset is from the start of the image data, it does not include the initial * @c mipPadding required in the file. * * @param[in] This pointer to the ktxTexture object of interest. * @param[in] level level whose offset

 * @return the data size in bytes.
 */
ktx_size_t
ktxTexture2_calcLevelOffset(ktxTexture2* This, ktx_uint32_t level)
{
  assert (This != NULL);
  assert(This->supercompressionScheme == KTX_SS_NONE);
  assert (level < This->numLevels);
  ktx_size_t levelOffset = 0;
  for (ktx_uint32_t i = This->numLevels - 1; i > level; i--) {
      ktx_size_t levelSize;
      levelSize = ktxTexture_calcLevelSize(ktxTexture(This), i,
                                           KTX_FORMAT_VERSION_TWO);
      levelOffset += _KTX_PADN(This->_private->_requiredLevelAlignment,
                               levelSize);
  }
  return levelOffset;
}


/**