So I want to reduce the lightmap sample sizes during the light compile phase to less than 8x8 because I have some fine detail work I would liek to show up with shadows. I originally tied the -samplesize switch on the compiler but the mapping still seems to be size 8x8. It was then suggested I try _lightmapscale N in the worldspawn, and again, the sample size seems to be at 8x8.
So what am I missing? Why can’t I cause Q3Map2 to use small lightsample sizes?
Q3Map2 uses only square, integer-sized lightmap sample sizes.
If a brush face is too large to fit on a 128x128 lightmap with your desired samplesize, the samplesize is increased +1 until it fits.
For areas with low _lightmapscale, make sure the dimensions are relatively small.
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ydnar… question about this sample sizes:
samplesize:
how low can it be? -samplesize 2 had the same effect as -samplesize 1 in some tests i made
_lightmapscale:
important for bump mapping(normals)… so if it depends on the size of the brush surface, then large walls or terrain can`t be really bump maped? what would be reasonable value in _lightmapscale for a 512x128x16 unit wall? i plan to use bump maps in my next map, but i was not experimenting that much yet 
I don’t think the problem lies in the dimension and lightmap size limits. Even on small brushes, the lightmap is still way below the desired resolution. It’s as if the -samplesize N switch is being ignored completely.
