Does anyone have information on *directional* lightmapping?
I know how to bake a lightmap in maya, i guess you just have to figure out how to bake direction into a lightmap texture, then use that texture lookup for direction to be used with the normal in the shader for model lighting?
also that's a little confusing.. how is the GEOMETRY lightmap applied to the MODELS? i mean the lightmap on the geometry works because you use the uv's of the geometry polygons in the lightmap texture lookup
how do you know the x,y lightmap texture lookup coords to use in the model shader?