Separate blend modes/operands for rgb/alpha are now supported, and min/max blend
modes are supported too. To avoid code bloat, the operands are now no
longer implemented as separate permutations in the table, but using a
small table and a mask. I haven't tested performance but it shouldn't
be much worse (and this is the "general" fallback case anyway, which
should prioritize correctness) and the number of functions is significantly reduced.
A bug was fixed regarding sRGB behavior when only the blue channel is
enabled.
M_subtract and M_inv_subtract are still left unimplemented.
rdb
David Rose