Quote: The BSP feature that the Pro owners are getting isn't the same as the one that ABT replaced in A6. The A7 Pro BSP can use arbitrary-shaped geometry, work with ABT, etc. The downside is that this new BSP is a lot trickier to use right than the base ABT system. Thus, Pro only.
sounds interesting. i thought a7 will just keep the old bsp system around. but why will it be trickier to use right? could you go into a bit more detail?
and maxf's question about bsp + shaders was a good one too.