# How to add Irrmap to saved Irrmap?

**URL:** <https://forums.chaos.com/t/how-to-add-irrmap-to-saved-irrmap/50986>\
**Category:** General\
**Created:** [September 10, 2014, 9:58am UTC](https://forums.chaos.com/t/how-to-add-irrmap-to-saved-irrmap/50986 "2014-09-10T09:58:39Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![Jeroen\_Prins](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/jeroen_prins/32/69098_2.png) [@Jeroen\_Prins](https://forums.chaos.com/u/Jeroen_Prins)\
**Post date:** [September 10, 2014, 12:09pm UTC](https://forums.chaos.com/t/how-to-add-irrmap-to-saved-irrmap/50986/3 "2014-09-10T12:09:21Z")

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Ah oke, i thought it would be possible with the add function.  
It will be a lot bigger this way, but that doesn’t matter. Thanks!

I also wondered if i can use the Lightcache “store with irradience map” for future GI precalculations. I now followed the old tutorial which makes two files for GI 1 for LC and 1 for IRRmap.  
Have anything changed since the ( [http://help.chaosgroup.com/vray/help/150SP1/tutorials\_imap2.htm](http://help.chaosgroup.com/vray/help/150SP1/tutorials%5C_imap2.htm)) to get to better / faster results?

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