Features: it can export the lightmap and heightmap to a .BMP file. Note: this is a really early version which is now under development.
This is the first screenshot (only lightmap generation, no shadows):
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I plan to add raytraced shadows tomorrow.
Your suggestions are welcome.
P.S. Arras, I guess I apply lightmap to ShlTerrain in a wrong way, the terrain is too light. I apply the base texture to material level 0 and the lightmap to level 1 (if I apply the base texture to level 1 and the shadowmap to level 0, it doesn't work at all).