[Fwd: [meta-ivi] Do I need to somehow activate sufraces?]

Gunnar GMail gunnar.genivi at gmail.com
Mon Nov 5 06:22:53 EST 2018

Hi Validimir

I think nobody answered this, from what I can see.  I'm forwarding to the
layer-management mailing list which might reach the right people.
Maybe since it was a long time ago, let everyone know if you figured this
out already.

Best Regards
- Gunnar

-------- Forwarded Message --------
From: "Jovic, Vladimir" <vladimir.jovic at ifm.com>
To: genivi-meta-ivi at lists.genivi.org <genivi-meta-ivi at lists.genivi.org>
Subject: [meta-ivi] Do I need to somehow activate sufraces?
Date: Fri, 28 Sep 2018 07:26:01 +0000


I started recently with ivi. I managed to create not so simple example, and
it almost works.
So, I start my example, it creates a layer, then wl and ivi surfaces, set
source and destination dimentions for both layer and surface, set opacity,
set order and then show both. And then it gets stuck.
This is what getting scene outputs:
root at pdm3:/home# LayerManagerControl get scene screen 0 (0x0)
- connector name:       Unknown-1
- resolution:           x=1280, y=480
- layer render order:   1502(0x5de), 

    layer 1502 (0x5de)
    - destination region:   x=0, y=0, w=1280, h=480
    - source region:        x=0, y=0, w=1280, h=480
    - opacity:              0.5
    - visibility:           1
    - surface render order: 50(0x32), 
    - on screen:            0(0x0) 

        surface 50 (0x32)
        - created by pid:       21067
        - original size:      x=800, y=600
        - destination region: x=0, y=0, w=800, h=600
        - source region:      x=0, y=0, w=800, h=600
        - opacity:            0.898438
        - visibility:         1
        - frame counter:      1
        - on layer:           1502(0x5de)

Take a note that the "frame counter" does not go above 1.

Now, if I do this:
LayerManagerControl set layer 1502 render order 50 or this:
LayerManagerControl set surface 50 destination region 0 0 600 400 then it
starts showing what is being rendered, and the frame counter starts going
I tried looking into the source code for LayerManagerControl, but it
revealed nothing to explain this behaviour.

The sequence for ivi application (https://at.projects.genivi.org/wiki/displa
SequenceforiviapplicationandHMIcentralController) tells nothing about
specifically unpausing rendering starting.

So, can anyone explain why is the counting not going up? Do I somehow need
to start the ivi application? I see no ivi function to do anything like

Mit freundlichen Grüßen

Vladimir Jovic

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