>Neither "sleep" nor "while loop" is good solution. >Is there any suggestion for this? how about waiting on a semaphore after issuing Copybit and signaling it once 2D-engine completes?
On Wed, Nov 24, 2010 at 9:38 PM, Colin <mickeyli...@gmail.com> wrote: > Hi there, > We are trying to improve Android UI performance. > After using Copybit module, UI performance is still not satisfied. > Here comes 2 questions. > > 1. Will the UI be faster if we got a HW OpenGL module? > > 2. Our 2D engine can queue many commands and finish them sequentially > while CPU is busy on the other things. > But in blit and stretch functions of Copybit, we need to wait for 2D > engine to finish commands before returning. > If we use "sleep" to wait, Linux will schedule CPU to the other thread > and CPU will come back several ticks later even if 2D engine has > completed command queue for a while. > If we use "while loop" to wait, CPU will be wasted on doing nothing. > Neither "sleep" nor "while loop" is good solution. > Is there any suggestion for this? > > Regards, > Colin > > -- > unsubscribe: > android-porting+unsubscr...@googlegroups.com<android-porting%2bunsubscr...@googlegroups.com> > website: http://groups.google.com/group/android-porting > -- Regards, Deva www.bittoggler.com -- unsubscribe: android-porting+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-porting
