On Sat, 2 Apr 2016 00:19:35 +0200 Andreas Volz <li...@brachttal.net> said:
> Hello, > > I compiled e20 on Raspberry Pi 2 with latest Raspbian and it works. I > had to deactivate Composite Effects and switch to Software renderer > because it says there's no OpenGL support. > > The reason because I did this is that like to run the Raspi with a > 800x480 display and several fullscreen EFL applications which are > stacked one over the other and the above one with alpha and shaped > window. > > I use E20 only as layer manager and deactivated all other elements. > Maybe E20 is oversized for that reason. > > I experienced now that the CPU load of the E process is really high > even if nothing much happens. In idle the load is >10%, but if I render > some edje content in my application the E process goes fast up >60-100% > CPU. My application itself has very low CPU usage. software will have lots of overhead in x11. wayland actually will be quite a lot better (wayland_shm). the reason i - any update - a blinking curor needs to ask x to copy pixels from the update region(s) into a shm buffer, then depending maybe copy again to a destination buffer, THEN render the canvas (updating objects withint the render update region) and again copying/scaling/blending to an update region shm buffer... THEN this shm buffer is copied to the actual fraembuffer by the xserver. with gl and a decent driver , texture from pixmap, the render/blend is done by gpu and the rest is zero-copy. in wayland same for gl and wayland_shm makes it zero-copy for clients to send updates to compositor. if compositor is also sw, it's just the rendering cot, then the buffer swap which is zero-copy. so yes - you'll have overhead. several copies of updates everywhere. even a tiny blinking cursor causes all of the above. oh if your app uses a shaped window things can be even worse as e ha to merge shape rects into the alpha values of the pixel data it just copied... :) maybe you might want to try e in wayland mode? it doesn't NEED egl/gles. just kms/drm ... > I tried to start my application with the default Gtk based window > manager, but it's strange. As long as I activate alpha and shaped > window support in my application the application is somehow broken and > hangs in the beginning. I didn't yet trace it out where it hangs. odd. does it display with no wm? > Do you have any ideas or explanations? > > regards > Andreas > > -- > Technical Blog <http://andreasvolz.wordpress.com/> > > ------------------------------------------------------------------------------ > Transform Data into Opportunity. > Accelerate data analysis in your applications with > Intel Data Analytics Acceleration Library. > Click to learn more. > http://pubads.g.doubleclick.net/gampad/clk?id=278785471&iu=/4140 > _______________________________________________ > enlightenment-devel mailing list > enlightenment-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/enlightenment-devel > -- ------------- Codito, ergo sum - "I code, therefore I am" -------------- The Rasterman (Carsten Haitzler) ras...@rasterman.com ------------------------------------------------------------------------------ Transform Data into Opportunity. Accelerate data analysis in your applications with Intel Data Analytics Acceleration Library. Click to learn more. http://pubads.g.doubleclick.net/gampad/clk?id=278785471&iu=/4140 _______________________________________________ enlightenment-devel mailing list enlightenment-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/enlightenment-devel
