Feature: #48013 - Add support for progressive images

See forge#48013


It is now possible to generate progressive images by setting $GLOBALS['TYPO3_CONF_VARS'][GFX][processor_interlace] in the Settings Module.

The possible values to set are identical to the ones in defined in the GM / IM manuals.

Possible values by the time of writing are:

  • None
  • Line
  • Plane
  • Partition