[Development] Partial screen updates with Scenegraph

[Thiago Macieira]

On sexta-feira, 20 de julho de 2012 12.32.41, Andreas Aardal Hanssen wrote:
> For hardware and applications where memory bandwidth and CPU/GPU power is
> an issue, for example when resolutions go above 800x480 (e.g., retina) and
> there are multiple screens, with multiple layers (e.g. video playback or
> animated wallpapers), supporting partial updates becomes a matter of win or
> lose. Wasn't EGL_NOK_swap_region2 added for this reason?

That was added because the the driver in the device was too slow doing a full 
screen update, above 10 ms (out of the 16 ms per frame that the application 
has available). That is, even with a good a good GPU, it wasn't enough because 
the drivers were bad.

-- 
Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel Open Source Technology Center
     Intel Sweden AB - Registration Number: 556189-6027
     Knarrarnäsgatan 15, 164 40 Kista, Stockholm, Sweden
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