https://gdn.giants-software.com/downloads.php
GIANTS Grle Converter
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The grle converter converts GIANTS density maps (grle and gdm) to png files
so that they can be edited in any generic image editing tool.
The png file can then be loaded directly in to the GIANTS Engine again.
Changelog
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7.0.1 (30.11.2016)
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- Added support for multi compression range gdm files (as used by Farming Simulator 17 1.2)
7.0.0 (29.10.2015)
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- Added support for gdm files