[Interest] Replacement for Qt4 QMatrix4x4?

[Thiago Macieira]

On Thursday, 21 February 2019 13:47:05 PST Matthew Woehlke wrote:
> (Uh...why? I am not particularly amused by the loss of precision, nor
> the extremely subtle incompatibility.)

Changed in commit 51d40d7e9bdfc63c5109aef5b732aa2ba10f985a:
http://code.qt.io/cgit/qt/qtbase.git/commit/?
id=51d40d7e9bdfc63c5109aef5b732aa2ba10f985a

One of the two reasons the commit message says was to avoid the surprise in 
that it used float in embedded platforms (read: ARM). That rationale is no 
longer applicable, as we changed qreal to be double in all platforms about one 
year later: http://code.qt.io/cgit/qt/qtbase.git/commit/?
id=d8bf317546bcfab0b6b50375218429fa9d470705

I think we need to reconsider the storage type for Qt 6. Added to 
https://bugreports.qt.io/browse/QTBUG-62425

-- 
Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel System Software Products