As I saied the same code runs great on every feature phones from JP5 to JP7 and newer. SAME CODE means that I converted the JavaME calls to android one, we are talking about exactly the same code. We are talking about 100-180MHz phone and Is this your answer? The app isn't well optimized?
You are talking about drawLines() over the drawLine(), should we abandon antialiasing to draw some lines on a 1.2GHz smartphone? (drawLines() does not support antialiasing) Don't you think that the problem is somewhere else? On 16 Gen, 20:45, Romain Guy <[email protected]> wrote: > There is nothing magical about hardware acceleration. It is perfectly > possible to write code that runs faster on the CPU that on the GPU. > For instance, an app that does dozens or hundreds of calls to > Canvas.drawLine() per frame is likely to perform worse on the GPU. The > reason in this particular example is that every call to drawLine() > will generate a rendering instruction for the GPU, which is very > expensive. It is much more efficient to use drawLines() (plural) to > batch all the lines in a single rendering instruction. There are many > other things that can make a GPU perform poorly: overdraw, too many > different textures or shaders, etc. > > I just tried the app you linked to on a Galaxy Nexus and it performs > roughly the same with or without hardware acceleration. From looking > at its UI it seems it's doing a lot of custom drawing and I'm sure it > could be optimized to be more GPU friendly. > > Also the amount of RAM and the speed of the CPU have little to do with > how well an app will perform on the GPU. > > On Mon, Jan 16, 2012 at 10:41 AM, sblantipodi > > > > > > > > > > <[email protected]> wrote: > > Just to add some more data. > > This simple app can render its UI at 60FPS on Galaxy Nexus running > > stock 4.0.2 with HW ACC is OFF. > >https://market.android.com/details?id=MortgageCalculatorPRO.DPsoftwar... > > > Simply enable hardware acceleration and the framerate drops from 10FPS > > to 30FPS. > > As I repeat all the UI is drawn using drawLine() drawRect() > > drawRoundRect() and StaticLayout to draw a correctly wrapped text. > > Simple apps using simple UI runs slow on a 1.2GHz CPU with 1GB of RAM. > > > Is there any reason to justify this aside from the fact that it must > > be some problem in the hw acceleration implementation? > > > -- > > You received this message because you are subscribed to the Google > > Groups "Android Developers" group. > > To post to this group, send email to [email protected] > > To unsubscribe from this group, send email to > > [email protected] > > For more options, visit this group at > >http://groups.google.com/group/android-developers?hl=en > > -- > Romain Guy > Android framework engineer > [email protected] -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
