On Wednesday 12 March 2014 12:08:53 Jason H wrote: > I need to do some elementary graphics operations on QPixmap or QImage. I can > do these in Qt to some extent already. But for this latest project I will > be processing 4k resolution images. My operations are: > Translate off origin > Rotate by an acute angle (around a point sometimes not in the image) > Pixel value normailzation > > To what extent does Qt support these operations in a hardware accelerated > manner? Or how hard is it for me to use the hardware to produce those > functions to inter-operate with Qt? > > Many thanks!
Have you considered using OpenGL? Two options: 1) If you have OpenGL 4.3 capable hw use a compute shader plus a texture or shader storage buffer 2) If you don't have OpenGL 4.3 capable hw use a framebuffer object and a texture. Qt has good support for OpenGL so using this approach should be pretty simple for you. Cheers, Sean -- Dr Sean Harmer | sean.har...@kdab.com | Managing Director UK Klarälvdalens Datakonsult AB, a KDAB Group company Tel. Sweden (HQ) +46-563-540090, USA +1-866-777-KDAB(5322) KDAB - Qt Experts - Platform-independent software solutions _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
