Hi Nikhil, I know this is a very old post, but can you share how you managed to add multiple framebuffer support eventually? Thanks
On Wednesday, October 21, 2009 1:11:15 PM UTC+2, nikhil wrote: > > Hi Robin , > Thanks for your valuable suggestions . It was very helpfull . > > I understand that the following things need to be done . > > 1) Instead of mGraphicsPlane, take array of GraphicsPlane, > mGraphicsPlane[2] //for 2 displays fb0 and fb1 > 2) Change the DISPLAY_COUNT value in surfaceflinger.cpp to 2 > #define DISPLAY_COUNT 2 > 3) Firstly Initialize main display DisplayHardware by passing dpy as > 0 > , then secondary DisplayHardware by passing dpy as 1. > 4) From init of DisplayHardware pass dpy to EGLDisplaySurface's > mapFrameBuffer and based on dpy value to open /dev/fb0 or /dev/fb1 > respectively . > 5)Then I need to modify the threadLoop for each of the APIs such as > handlePageFlip() etc . > > Please let me know if my understanding is right ? Do I need to do > anything else . > > My Basic Doubt is how can we enable or disable Second > DisplayHardware instance based upon dpy=0 and dpy =1 passed from the > client ? > > How do I Add a new interface API to the surfaceflinger so that > secondary display could be initilized as and when required ? > > > Thanks and Regards, > Nikhil > > > > Second DisplayHardware instance based upon > dpy=0 and dpy =1 passed from the client > > On Oct 21, 1:26 pm, Robin Gujjar <robin.guj...@gmail.com> wrote: > > Hi Nikhil, > > > > You have to modify the surfacefilnger and UI code for Fb1 > > initialization, you will find some comment in surafceflinger.cpp for > > FB1 initilization( DisplayHardware instance for FB1 on the basis of > > dpy value). And u have to modify the EGLDislaySurface.cpp also. Other > > modification is alos there please read the below post for more > > information . > > > > > http://groups.google.com/group/android-porting/browse_thread/thread/c...http://groups.google.com/group/android-porting/browse_thread/thread/6... > > > > > > thanks and regards > > Robin Singh > > > > On Oct 20, 8:01 pm, nikhil <nikhilbhand...@gmail.com> wrote: > > > > > > > > > Hi , > > > > > Can anybody tell us the exact modification required in SurfaceFlinger > > > and the corresponding UI code for supporting multiple framebuffer > > > device (/dev/fb0 and /dev/fb1) . > > > > > Idea is that the other display should be initialized asynchronously, > > > so that it could come and go > > > > > Thanks in advance for all the help . > > > Regards, > > > Nikhil- Hide quoted text - > > > > - Show quoted text - -- unsubscribe: android-porting+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-porting
