Pretty UI for OpenMoko

Денис Парченко cray at hotbox.ru
Sat May 26 16:28:40 CEST 2007


>>
>>>>  I have estimated memory bandwidth in following way:
>>>>
>>>>     480 (width) *
>>>>     640 (height) *
>>>>     3 (bytes per pixel, not sure) *
>>> It's 2
>>>>     25 (fps) == 23040000 bytes/s (22Mb/s)
>>>>
>>> 60 fps however.
>>
>>   What kind of FPS is that 60? Display refresh rate?

> Yes, the native refresh of the LCD is 60Hz.

Then it appears that we need 35Mb/s (480 * 640 * 2 * 60) for just
viewing picture on display? Sad :(
Simple two-layer fullscreen animation will need 26Mb/s (480 * 640 * 2  
* 3 * 15),
where 3 == 1 (read back layer) + 1 (read front layer) + 1 (write result)
35 Mb/s + 26 Mb/s == 61 Mb/s
And what bandwidth can neo provide?

=#=-===-==----=#=--- - -- -=#=-- - -   -      -
  Best regards,
    Denis
 






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