Our business logic is in C++ and the drawing code gets its data from this C++ code. So I'd rather do the drawing in C++ instead of the overhead of passing all the data to Java (and the Java code would call Android framework which internally calls C code anyway)
With C++ for Android, my understanding is that OpenGL ES and Skia are the two best options. We have already written OpenGL ES prototype code (on iOS), OpenGL is is more portable and it seems reasonable to assume that it offers better performance than Skia. Of course, I'm open to hearing more options on drawing with C++ (and see Java/Canvas drawing as a last resort). Does this answer your question ? On Tuesday, August 21, 2012 1:58:45 PM UTC-7, bob wrote: > > If it is just 2d, why bother with OpenGL? > > > In general, OpenGL does not play well with others. > > > > On Tuesday, August 21, 2012 3:19:51 PM UTC-5, aprogrammer wrote: >> >> Hi, I'd like to do some 2G OpenGL rendering inside a ScrollView. The >> rendering code is in C++ and the rest of the ScrollView UI is based on >> Android framework UI elements. >> >> It seems like OpenGL drawing should be done on a SurfaceView (which can >> be passed from Java to C++) >> However, SurfaceView elements don't scroll with the rest of a ScrollView >> and so it seems like I won't be able to use the SurfaceView with a >> ScrollView >> >> My understanding is that the TextureView in ICS/4.0 permits OpenGL >> drawing and also supports scrolling inside a ScrollView. So this meets my >> needs for new devices. >> However, I'd also like to support older devices (Gingerbread/2.3 and >> upwards). >> I'm not sure if this can be done (for instance, I'm not sure if the >> OpenGL drawing can be rendered to a bitmap and then have the bitmap placed >> inside a ScrollView) >> >> 1. Does anyone know if and how it is possible to implement this for >> Android 2.3 ? >> iow is it possible to place an OpenGL drawing inside a ScrollView - or is >> the Canvas approach my only option ? >> >> 2. A second (related) question - Can I place a Canvas object inside a >> ScrollView, pass the Canvas object to C++ code and then use Skia apis to >> draw on the Canvas object >> > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
