by Aaron » Sun Nov 12, 2006 11:13 pm
Hi Dennis,
Yes, this still appears to be a limitation. What's happening here is that the malloc function is returning a null pointer for memory blocks of 1Gb or greater. I will continue to search for a solution to this, but the last time I looked it appeared to be related to swap file size (2Gb recommended), or memory fragmentation, or something else. [I know, that answer doesn't satisfy me either.]
In any case, you should be able to make a 16k x 16k map by using the mosaic map system, then when your heightfield is ready, select 'file->export->active map', disable the 'split map into tiles (mosaic map)' option, select RAW from the format list, select your filename, and hit save.
Most of the format plugins I've written (excluding image plugins) can save mosaic maps as single files without loading them into RAM.
Let me know if this works.
Cheers,
Aaron.