performance cost compared to what?
Each single operation costs performance. So this question is way too generic to give an adequate answer, sorry.
Could you specify it a bit more?
I have a device which its display is with 180 degrees rotation.
I run on this device QML application unside Qt QdeclarativeView.
on my main.cpp i rotate the QDeclarativeView 180 degrees.
Does this action affect the performance of my program (other QML paint operation will be slower) ?
