bool border = groupThreadId.x == 0 | groupThreadId.y == 0 | groupThreadId.x == KERNEL_SIZE + 1 || groupThreadId.y == KERNEL_SIZE + 1; discovered | , not || cs temporal check if that is ok
bool border = groupThreadId.x == 0 | groupThreadId.y == 0 | groupThreadId.x == KERNEL_SIZE + 1 || groupThreadId.y == KERNEL_SIZE + 1;
discovered | , not ||
cs temporal
check if that is ok