- Used by Super Mario Odyssey.

- Used by Super Mario Odyssey.

* Implement BC5/DXN2 (#996)

- Used by Kirby Star Allies.

* Implement BC5/DXN2 SNORM

UNORM for Kirby Star Allies
SNORM for Super Mario Odyssey

Avoids potentially perfoming multiple reallocations when we know the
total amount of memory we need beforehand.

A range-based for loop can't be used when the container being iterated
is also being erased from.

- Used by Kirby Star Allies.

This is simply copied by value, so there's no need to make it a
modifiable reference.

While we're at it, make the names of the parameters match its
definition.

This function doesn't modify anything within the reference Thread
instance.

It's generally easier to follow code using conditionals that operate in
terms of the true case followed by the false case (no chance of
overlooking the exclamation mark).

resize() causes the vector to expand and zero out the added members to
the vector, however we can avoid this zeroing by using assign().

Given we have the pointer to the data we want to copy, we can calculate
the end pointer and directly copy the range of data without the
need to perform the resize() beforehand.

- Used by Super Mario Odyssey (in game).

- Used by Super Mario Odyssey (in game).

- Used by Super Mario Odyssey (when going in game).

- Used by Super Mario Odyssey (in game).

This is only ever read from, so we can make the data it's pointing to
const.