Make it possible to create distance field with specific sizeHEADdev

The distance field size calculation is floating point math
and  sensitive to numerical errors. When used in Qt Quick,
it is vital that the allocated memory is the same as what
we calculate in the cache, otherwise we will get memory
corruption. In certain cases, numerical errors would cause
a qCeil() to round what was actually an integer up, and
we would end up with an allocated size that was off by one.

To avoid this, we allow the user to specify the size to
allocate, so that we can do the calculation in a single
place.

Pick-to: 5.15 6.2 6.5 6.7 6.8
Task-number: QTBUG-124572
Change-Id: I14e381952fdf331286f1ae4b51bb5fef9e39d704
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>

0 files changed, 0 insertions, 0 deletions