[Development] Partial screen updates with Scenegraph

[Uwe Rathmann]

On 07/20/2012 09:02 AM, gunnar.sletta at nokia.com wrote:


> Based on the experience we had from the widget stack and graphics view,

 > we early on concluded that for applications which have
 > moderate amount of animations, partial updates hurts a lot more than 
 > it gains.

I already had several projects using Qt/Embedded where the framebuffer 
device was the performance bottleneck ( due to missing kernel support or 
an appropriate board support package ).

Here partial updates were the only way to have an acceptable performance 
for certain operations like dragging objects over a canvas !

Uwe