Qt4 hardware acceleration and PDF performance - Raspberry Pi Forums

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hey guys, use raspberry pi read pdfs. use okular, provided raspbian repositories. if use okular, i'm sure you've found cpu usage shoots way during rendering , rendering page can take amount of time. guessing okular uses little no hardware acceleration based on observation.

okular relies on poppler pdfs, , based on dependencies okular i'm guessing qt4 - rather cairo - used backend version present in repositories. though libqt4-opengl indeed available in raspbian jessie repositories, appears okular not use (based on comparison between "apt-cache depends okular" , "apt-cache rdepends libqt4-opengl").

curious couple of things:
1. okular in raspbian repositories gpu-accelerated @ all? use opengl es 2?
2. libqt4-opengl work out of box experimental full opengl drivers?
3. there plans update okular such uses full opengl?
4. unrealistic expect giant performance leap in okular's pdf rendering use of opengl - similar glxgears?

also, side note: there plans enable desktop opengl raspberry pi 1 , 0?

as far can tell okular not use opengl , hence not gpu accelerated in way.

@ least running command "ldd /usr/bin/okular" not show dependency on gl library far can see.


raspberrypi



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