In my app i am displaying raster maps of about 640x640px.
I load them into QImage and then i paint on the screen applying to the QPainter a QTransform with scaling and rotating.
On my old 5800XM it works very fast, i can scale&resize&display at least five of those images with no slowdown (then i fill up the phone memory).
On a new C7 instead even displaying just one is so slow to be unusable...
Is there something special i should be aware of?
Is it due to Symbin^3 using OpenVG instead of Raster?
Can i switch back to raster in my code?
Can i improve this by forcing the image depth of the QImages?
Please, any pointer to find the root of the problem and any hope to fix it...